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Transmission control

Subclass of:

701 - Data processing: vehicles, navigation, and relative location

701001000 - VEHICLE CONTROL, GUIDANCE, OPERATION, OR INDICATION

Patent class list (only not empty are listed)

Deeper subclasses:

Class / Patent application numberDescriptionNumber of patent applications / Date published
701053000 And other vehicle control 265
701058000 Adaptive control 210
701055000 By changing shift map, schedule, or pattern 137
701052000 Semiautomatic control (e.g., switchable between automatic and manual) 49
701062000 Fail-safe control (e.g., preventing a gear shift) 31
701066000 Time regulated operations 25
701065000 Responsive to road, external, or ambient condition 22
701064000 Indicating a completion of a shift or a shift to be completed 9
701057000 Fuzzy logic 3
20090043467Driver Advisory System for Fuel Economy Improvement of a Hybrid Electric Vehicle - The invention is an intelligent advisory system, which may be based on fuzzy rule-based logic to guide a vehicle driver in selecting an optimal driving strategy to achieve best fuel economy. The advisory system includes separate controllers for providing advisory information regarding driver demand for power and advisory information regarding vehicle braking, which are conveyed to the driver.02-12-2009
20090312923AUTOMOTIVE SLIPSTREAMING SUPPORT SYSTEM - Systems and methods are provided to enhance the ability of a driver to safely slipstream a leading vehicle to realize a fuel economy benefit.12-17-2009
20080262684Method for Controlling Gear Change During Shifting Rule or Variogram Switching - The inventive method for controlling the gear change of an automatic gearbox provided with distinct shifting rules or variograms used according to a vehicle operating conditions consists in detecting and carrying out gear shifting requests sequential to the shifting rule or variogram switching, subject to the application of specific conditions only.10-23-2008
Entries
DocumentTitleDate
20110178686METHOD AND APPARATUS FOR MULTIVARIATE ACTIVE DRIVELINE DAMPING - A multivariate control method and system to control torque output from a powertrain system to a driveline is provided, to reduce driveline oscillations. The powertrain preferably comprises hybrid powertrain having a plurality of torque-generative devices connected to a transmission. Desired powertrain and driveline operating states are determined, as are a plurality of operating state errors. Each torque-generative device is controlled, based upon the operating state errors, and operating mode of the transmission. A damping torque command, additive to a commanded torque, is determined for one or more of the torque-generative devices based upon the determined transmission operating mode. Determined operating states include operator input, and powertrain/driveline including driveline torque; transmission input torque, rotational speed of the torque-generative devices; road load; and, accessory load.07-21-2011
20110178684Speed Change System for Work Vehicle - A speed change system for work vehicle having a continuously variable transmission device selects a first change gear ratio which is set larger than a smallest change gear ratio, when an engine rotational speed is a first set rotational speed which is set equal or close to an idling rotational speed of an engine; retains the change gear ratio of the continuously variable transmission device at the smallest change gear ratio, when the engine rotational speed is equal to or above a second set rotational speed set on a high-speed side relative to the first set rotational speed; and makes the change gear ratio of the continuously variable transmission device larger between the first change gear ratio and the smallest change gear ratio, as the engine rotational speed at that moment becomes lower, when the engine rotational speed is between the first and second set rotational speeds.07-21-2011
20130030662METHOD FOR ELECTRONICALLY CONTROLLING A BICYCLE GEARSHIFT AND ELECTRONICALLY SERVO-ASSISTED BICYCLE GEARSHIFT - A method for electronically controlling a bicycle gearshift by detecting a first actual command value of an actuator such as to position a motion transmission chain in engagement with a first of at least three coaxial toothed wheels, and a second actual command value of the actuator such as to position the chain in engagement with a second of said toothed wheels. For each toothed wheel, there is determined a nominal command value of the actuator theoretically such as to position the chain in engagement with said toothed wheel. Computing an actual command value of said actuator at least for each of said toothed wheels other than the first and second toothed wheel, based on said nominal command values and on said first and second actual command value. An electronically servo-assisted bicycle gearshift having modules adapted to implement the above method is also disclosed.01-31-2013
20120173097METHOD FOR CONTROL OF A GEARBOX - A method for control of a gearbox intended to be installed in a motor vehicle, which method effects a downshift of the gearbox from a first gear (G07-05-2012
20110301818ROTARY ENCODER GEAR SELECTOR FOR VEHICLE - Gear selector apparatus for a vehicle includes a rotary encoder having detents at positions corresponding to driving modes of the vehicle, the rotary encoder outputting at least one encoder signal in response to rotation of the rotary encoder by a driver of the vehicle, a display assembly configured to indicate a driving mode of the vehicle, and gear selector logic, responsive at least in part to the encoder signal, to control the driving mode of the vehicle and the display assembly. The rotary encoder may be rotatable in either direction without limits on rotation. The gear selector logic may define one or more conditions for changing from an actual driving mode to a target driving mode selected by the driver.12-08-2011
20110196584CONTROL SYSTEM AND METHOD FOR AUTOMATIC SELECTION OF A LOW RANGE GEAR RATIO FOR A VEHICLE DRIVETRAIN - An apparatus and method for automatically controlling a drivetrain coupled to at least one drive wheel of a vehicle can include providing a first assembly including a low range drive ratio and a high range drive ratio. An electronic control unit can be configured to receive information from at least one sensor located on the vehicle and to provide an output signal based on the information. An actuator mechanism can be provided and configured to cause the first assembly to operate at a selected one of the low range drive ratio and the high range drive ratio based on instructions from the control unit. Separate algorithms can be provided to determine when to actuate from the high range drive ratio to the low range drive ratio and vice versa.08-11-2011
20090018732SYSTEMS AND METHODS FOR SHIFT CONTROL FOR VEHICULAR TRANSMISSION - Systems and methods for shift control for vehicular transmission. A transmission may shift gears at designated transmission shift points. When the slope of the road grade encountered by a vehicle changes, the transmission shift points may be altered to provide better vehicle performance. According to one embodiment, road slope may be calculated based upon vehicle acceleration and acceleration caused by pedal depression. In such an embodiment, brake indication may be calculated from the same road slope calculation without the use of a brake signal switch. If brake application is indicated by the road slope calculation, transmission shifting may be adjusted to prevent poor vehicle performance.01-15-2009
20120265413MULTI-FUNCTIONAL ELECTRONIC CONTROL HANDLEBAR FOR BICYCLE/WALK-ASSISTING VEHICLE - A multi-functional electronic control handlebar for bicycle or walk-assisting vehicle includes a control module that is built in a brake lever or a speed-change shifter or is mounted to a brake lever clip or a speed-change shifter clip. When the brake lever or the speed-change shifter is actuated, the brake lever or the speed-change shifter drives the control module to generate an electronic control signal to control a peripheral electronic accessory mounted to the vehicle body.10-18-2012
20100042299METHOD FOR CARRYING OUT A SHIFT OF GEARS OF AN AUTOMATIC TRANSMISSION - A method for shifting gears of an automatic transmission of a vehicle, by way of primarily form-locking shifting elements, while driving with or without utilization of a clutch depending on a decision made by a decision device which, in the presence of certain basic conditions, causes disengagement of a starting gear without disengaging the clutch, and subsequently reads in data about the size and the progression of a quantity correlating closely with the rotational speed of an output shaft of the automatic transmission and, with inclusion of this data, determines the shifting mode for engagement of the target gear. The method concerns early and slight adjustment of the clutch, preferably as a function of the degree of load reduction, just before determination of the shifting mode, without slippage of the clutch.02-18-2010
20090157267SYSTEM FOR ASSISTING FUEL-EFFICIENT DRIVING - A system for assisting fuel-efficient driving includes a storage unit for storing a shift pattern map, a collection unit for collecting the driving state information of a vehicle, a driving state calculation unit for calculating a current driving state and a target driving region on the basis of the information from the collection unit and the shift pattern map, and a display control unit for displaying the current driving state and the target driving region on a display to make it possible to compare the current driving state and the target driving region on the basis of at least acceleration or speed.06-18-2009
20120166050MACHINE CONTROL SYSTEM AND METHOD - A machine control system may include an input receiving portion configured to receive torque inputs related to a hydrostatic transmission. The input receiving portion may also receive an operator request for actuating the hydrostatic transmission. The machine control system may also include a processor configured to determine a factor based at least in part on the torque inputs, for adjusting the operator request. The processor may also be configured to determine a command for actuating the hydrostatic transmission based on the adjusted operator request, such that a torque load to be exerted on a power source by the hydrostatic transmission is within a desired range. The machine control system may further include an output sending portion configured to send the command to the hydrostatic transmission.06-28-2012
20130046449FUEL OPTIMIZATION DISPLAY - The present invention is an apparatus and method for guiding the driver of a vehicle in selecting an accelerator pedal position and transmission gear to improve a score. The score may be a weighted average of a fuel economy score and a drivability score. A curve showing the best score for each gear may be shown on a display as a function of accelerator pedal and transmission gear number, along with the current accelerator pedal and gear number of the vehicle. The driver may improve the score by changing to an accelerator pedal and/or gear selection that is closer to the curve. The curve may be calculated, using a model based on forces and torques upon the vehicle, from data acquired by monitoring the vehicle and/or from external sources.02-21-2013
20090043465Vehicle control apparatus and method - In a case where, in order to stop a hybrid vehicle on a hill, a brake device is turned on and then the shift lever is shifted to the parking position (“P” position) to lock a parking-lock device and then the brake device is turned off and then the brake device is turned on despite that torsional torque is acting on the drive shaft, a motor generator, which is an inertial object having a large weight, is driven to rotate in a rotational direction corresponding to the direction of gradient of the road, so that the resultant rotational torque is transmitted to a sun gear, to pinions, and to a ring gear.02-12-2009
20090043463Systems and methods for controlling transmission shifting during vehicle braking along a decline - In some embodiments, systems and methods are provided for controlling transmission downshifting of a vehicle. The systems and methods monitor vehicular conditions continuously throughout vehicle travel such that downshifting may occur during braking along a decline and are not influenced by and do not interfere with road grade calculation systems. In one embodiment, a system comprises sensors that monitor vehicular conditions. The sensors transmit signals indicative of vehicular conditions to an electronic controller that processes the signals. The electronic controller generates instructions for downshifting where the processed signals indicate vehicle travel along a decline and when downshifting would not cause exceeding of a maximum revolutions per minute limit. The instructions are transmitted to a transmission system that downshifts the transmission gear position according to the instructions. The electronic controller cancels the instructions for the downshifting when the degree or duration of accelerator pedal depression exceed predefined values.02-12-2009
20090306864TRANSMISSION AND CONTROL METHOD THEREOF - A transmission includes a clutch mechanism, an input shaft, an output shaft, a transmission mechanism including a plurality of gears and a synchronizing device selectively synchronizing the input shaft and the gears, a gear selecting apparatus including sleeves and at least one actuator, the sleeve selectively moving to a neutral position, to an engaged position, and to a synchronized position, the actuator actuating the sleeve to selectively move to the neutral position and the engaged position, a controller controlling the clutch mechanism and the actuator, a synchronization device for controlling the actuator to select the sleeve corresponding to the selected gear and to move the sleeve to the synchronized position, and an auxiliary synchronization device for controlling the corresponding actuator to move the sleeve corresponding to an auxiliary gear which is the gear different from the selected gear to the synchronized position.12-10-2009
20120191308TORQUE SENSOR SYSTEM WITH INTEGRATED ELECTRICAL CONNECTORS - A torque sensor system for a transmission and other powertrain components in a motor vehicle includes a receiver and a transmitter. The receiver is operable to induce and detect a signal from the transmitter that is indicative of a torque load on the transmitter. The receiver is cylindrical and has an outer surface with a maximum, constant diameter. The outer surface defines one or more fluid transfer grooves and a docking port for an electrical connection. The fluid transfer groove and the docking port do not extend beyond the maximum outer diameter of the outer surface. Therefore, the receiver is capable of being press-fit within a component and is capable of routing fluid flow. An electrical connector is fed through an access hole and connects with the receiver.07-26-2012
20090093935METHOD AND DEVICE FOR TRIGGERING A CIRCUIT ARRANGEMENT WITH ELECTRIC ACTUATORS - A method and a device for actuating a shifting arrangement with electric actuators with directly controlled valves of an electrohydraulic, electropneumatic, electromagnetic or electromotor transmission control of a motor vehicle. A current monitoring function, in which a total current of the shifting arrangement available at a point in time is determined, shift requests of shift elements are detected and compared with the total available current, the shift requests are tested according to preset priorities, and sequential shifting of shift elements according to the priority test is performed, is provided in order to avoid exceeding a preset allowed current load with a comparatively high current requirement of the electric consumers directly controlled valves, when the shift requests would cause the total available current to be exceeded, or direct shifting of the shift elements is carried out when the shift requests would not cause the total available current to be exceeded. A device is also provided which has control and detection mechanisms such that a current monitoring function for limiting the current flow can be generated in the shifting arrangement.04-09-2009
20110015834CONTINUOUSLY VARIABLE TRANSMISSION AND CONTROL METHOD THEREOF - When a vehicle stops in a travel range, a transmission controller sets a subtransmission mechanism in a second speed interlocking condition in which a torque input into a continuously variable transmission is transmitted in a second gear position and both a frictional engagement element of a first gear position and a frictional engagement element of the second gear position are engaged, and when a predetermined condition is established while the vehicle is stationary, the transmission controller reduces an output shaft torque of the continuously variable transmission.01-20-2011
20110015833CONTINUOUSLY-VARIABLE TRANSMISSION FOR VEHICLE - A continuously-variable transmission for a vehicle includes a belt-type continuously-variable transmitting mechanism connected to a drive source and configured to continuously vary a speed ratio of the belt-type continuously-variable transmitting mechanism; an auxiliary transmitting mechanism provided in series with the belt-type continuously-variable transmitting mechanism and configured to attain a plurality of shift steps for a forward running of the vehicle; and a speed-increasing gear mechanism provided upstream from the auxiliary transmitting mechanism and configured to increase an input rotational speed of the auxiliary transmitting mechanism.01-20-2011
20090299584METHOD FOR MONITORING A GEAR-CHANGE OPERATION IN A MOTOR VEHICLE PROVIDED WITH A DUAL-CLUTCH TRANSMISSION - The method monitors a gear-change operation in a motor vehicle provided with an engine whose crankshaft is connected to a transmission having a gearbox) comprising first and second primary shafts connectable to the crankshaft of the engine by respective friction clutches controlled by corresponding actuators, and a secondary or output shaft connectable to the primary shafts by gears defining a plurality of velocity ratios or gears. The method comprises the operation of verifying and validating the detection of the disengagement of the previously engaged gear by detecting the angular velocity of the primary shaft corresponding to the gear to be disengaged, and comparing the detected value of said angular velocity with at least one reference angular velocity.12-03-2009
20090271080Selector Mechanism for a Motor Vehicle Transmission - A rotatable selector mechanism for a motor vehicle transmission has a selector knob rotatable in a housing to select an operating mode of the transmission among a number of selector positions indicated by a label (P, R, N, D, M). The selector mechanism further includes a detent plate which cooperates with a detent pin for maintaining the selector knob in each of positions. The detent plate is connected to position sensors for generating selector signals to a transmission control unit which supplies control signals to an actuator for operate the transmission according to the operating mode selected. The detent plate is also associated to the selector knob and to a drive correction means by means of clutch devices respectively to engage the detent plate to one of the selector knob and the drive correction means. The clutch devices and the drive corrections means are controlled by the transmission control unit to move the detent plate from a selector position selected by the driver to another selector position representative of the operating mode of the transmission by means of the drive correction means without moving the selector knob. The selector knob further includes an illuminated pointer constituted by one of several LEDs controlled by the transmission control unit so as to change the LED illuminated in front of the label according to the position of the detent plate when the latter has been moved by the drive correction means in order to indicate the operating mode of the transmission.10-29-2009
20090271079VEHICLE CONTROL APPARATUS - A vehicle control apparatus includes a vehicle drive device having a friction engagement element capable of being engaged and disengaged by an oil pressure generated by an electric oil pump, a start operation detecting unit that detects a start operation of the vehicle, a vehicle status change detecting unit that detects a status change of the vehicle, an electric oil pump control unit that controls the electric oil pump, and a management unit that is connected between the vehicle status change detecting unit and the electric oil pump control unit in a manner capable of transmitting data. The management unit transmits a wakeup signal to the electric oil pump control unit when a status change of the vehicle is detected, and when the wakeup signal is received prior to detection of the start operation, the electric oil pump control unit starts the electric oil pump in response to the wakeup signal.10-29-2009
20090271078SYSTEM AND METHOD FOR IDENTIFYING A TRAILER BEING TOWED BY A VEHICLE - A system and method are disclosed for operating a vehicle towing a trailer including a camera that captures an image of a frontal surface of the trailer. A surface estimate component may be used to receive an image from the camera and generate an estimated area and shape of the frontal surface of the trailer. A type recognition component may be used to generate a trailer identification based on the estimated area and shape. A cross reference component may be used to retrieve correlated information related to the trailer based on the trailer identification. A vehicle control interface may be used to transmit the correlated information to an on-board vehicle control unit, to modify the operation of the vehicle according to the correlated information.10-29-2009
20090069989METHOD AND CONTROL ARCHITECTURE FOR SELECTION OF OPTIMAL ENGINE INPUT TORQUE FOR A POWERTRAIN SYSTEM - A method and article of manufacture are provided for operating an internal combustion engine adapted to transmit torque to a hybrid transmission. The method comprises determining engine input torque transmittable to the hybrid transmission for each of a plurality of engine states. Costs are determined for operating the engine and hybrid transmission in the engine states to substantially meet an operator torque request. A preferred engine state is selected based upon the determined costs. The engine is controlled based upon the preferred engine state to substantially meet an operator torque request.03-12-2009
20110022278VEHICLE AUTOMATIC TRANSMISSION - A vehicle automatic transmission includes a plurality of gears provided on an input shaft, a countershaft, and an output shaft and are meshed with one another. A plurality of hydraulic clutches are each configured to couple any of the gears to the input shaft, the countershaft, or the output shaft to establish a predetermined shift stage. An engagement unit is configured to couple a reverse gear to the input shaft or the countershaft to establish a reverse shift stage. A shift-position detection unit is configured to detect a shift position. A vehicle-speed detection unit is configured to detect a vehicle speed. A control unit is configured to detect, based on an output of the shift-position detection unit, a first time and a second time. The control unit is configured to delay a timing when the engagement unit operates after the shift position changes to an R-position.01-27-2011
20130166159DRIVING INSTABLITY DETERMINATION DEVICE - A driving instability determination device is provided to improve the precision in detecting the driving instability. The driving state determination section determines whether the state is a prescribed driving state by determining whether the information of the operation state of the driving operation unit and the vehicle state as the running state data is disturbed. Based on the running state data for detecting the unstable state of the driver, the running state distribution computing section excludes the running state data when the state is determined to be the prescribed driving state, and the running state distribution computing section computes the first and second running state distributions in different time ranges. The driving instability determination section determines the instability of the driving from the difference between the two computed running state distributions.06-27-2013
20090024287INTERNAL COMBUSTION ENGINE - Internal combustion engine with a power train, to which a torque of a starter can be transferred, wherein the power train is connected to the crankshaft of the internal combustion engine via a clutch, and in so doing, the clutch has an engaged position, wherein a drive torque from the starter can be transferred to the crankshaft, and a disengaged position, wherein the drive torque from the starter cannot be transferred to the crankshaft.01-22-2009
20090012681UPSHIFT CONTROL SYSTEM OF AN AUTOMATIC TRANSMISSION AND METHOD THEREOF - An upshift control system and method of an automatic transmission. The system includes a vehicle speed detector outputting a vehicle speed signal; a transmission control unit for receiving the signal, calculating a target hydraulic pressure based on a change of the vehicle speed, and outputting a control signal corresponding to the target hydraulic pressure; and an actuator for controlling an actual hydraulic pressure of an on-coming element based on the control signal. The method includes determining whether a vehicle speed changes during an upshift; calculating the change of the vehicle speed; calculating a target hydraulic pressure based on the change of the vehicle speed; and controlling an actual hydraulic pressure of an on-coming element based on the target hydraulic pressure. The target hydraulic pressure may be calculated by adding a modified hydraulic pressure, proportional to the rate of change of the vehicle speed, to a constant reference hydraulic pressure.01-08-2009
20090150032EFFECTIVE DRIVELINE VIBRATION DETECTION ALGORITHM IN TRANSMISSION TCC SLIP CONTROL - A method for adjusting the slip of a torque converter for a plurality of selected engine speeds, transmission gears and engine torque. A sensor is used to determine vibrations transmitted through the torque converter to the driveline of the vehicle. The sensor signal is sent to a controller where it is converted to the frequency domain. If the amplitude of the frequency signal exceeds a threshold, then the algorithm increases/decreases the converter slip until the driveline vibrations equal a threshold.06-11-2009
20110301819METHOD FOR OPERATING A TRANSMISSION WITH AT LEAST ONE POSITIVE-LOCKING SHIFTING ELEMENT - A method of operating a transmission (12-08-2011
20110218718CONTROLLER FOR VEHICLE CONTINUOUSLY VARIABLE TRANSMISSION - A controller for a vehicle continuously variable transmission is disclosed. When a target gear ratio is set as the maximum gear ratio and a vehicle speed is decreased to less than a first reference vehicle speed, the controller suspends varying of the gear ratio by the transmission control and starts a gear ratio hold control that releases operational oil from a first oil pressure chamber and holds the gear ratio at the maximum gear ratio. Further, the controller ends the gear ratio hold control and delivers operational oil to the first oil pressure chamber when the vehicle speed increases to a second reference vehicle speed or greater, which is lower than the first reference vehicle speed, and restarts the varying of the gear ratio by the transmission control when the vehicle speed subsequently increases to the first reference speed or greater.09-08-2011
20090150033SHIFT POSITION DETECTING DEVICE FOR GEAR SELECTION MECHANISM OF AUTOMOTIVE TRANSMISSION - A shift position detecting device comprises a shift position sensor that continuously issues an output data that represents a shift position of the gear selection mechanism; and a control unit. The control unit includes a first shifting load instruction section that controls the shift actuator to shift the gear selection mechanism to the shift gear-in establishing position with a first shifting load; a second shifting load instruction section that, after completion of shifting of the gear selection mechanism to the lo shift gear-in establishing position by the first shifting load instruction section, controls the shift actuator to reduce the shifting load from the first shifting load to a second shifting load which is lower than the first shifting load; and a shift gear-in establishing position memory section that stores an output data is issued from the shift position sensor when the shift actuator is controlled by the second shifting load instruction section, as an information data that represents completion of shifting of the gear selection mechanism to the shift gear-in establishing position.06-11-2009
20110196585CONTROL DEVICE FOR HYDRAULIC TRANSMISSION VEHICLE - A control device controls a hydrostatic transmission vehicle having a hydrostatic transmission including a variable displacement pump and a variable displacement hydraulic motor. The control device is configured to set a set vehicle speed based on a forward/rearward travel command and a gear stage command instructed by an operator, to set a torque limit usable for the hydrostatic transmission based on an engine speed, to set a vehicle speed limit based on a pressure in the hydraulic circuit and the torque limit, to select a lower one of the set vehicle speed and the vehicle speed limit, and to control respective displacements of the variable displacement pump and the variable displacement hydraulic motor based on the selected vehicle speed.08-11-2011
20110202243CONTROL DEVICE FOR HYDRAULIC TRANSMISSION VEHICLE - A control device controls a hydrostatic transmission vehicle having a hydrostatic transmission with a variable displacement pump and a variable displacement hydraulic motor. The control device is configured to set a set vehicle speed based on a forward/rearward travel command and a gear stage command instructed by an operator, to set an upper limit of the engine speed with respect to the set vehicle speed for limiting the upper limit of the engine speed to a predetermined partial engine speed set to be lower than a high idle engine speed when the set vehicle speed is in a preliminarily set low and intermediate speed range, and to control respective displacements of the variable displacement pump and the variable displacement hydraulic motor based on the set vehicle speed for allowing a vehicle speed to reach the set vehicle speed even when the engine is rotated at the partial engine speed.08-18-2011
20090012680Method for Optimizing the Operating Mode of a Hydrodynamic Component Integrated in a Drive Train of a Vehicle - A method for optimizing the operating mode of a hydrodynamic component integrated into a drive train of a vehicle, using a regulating or control device associated with the component. A set characteristic curve or a set characteristic diagram is stored in a memory unit for a hydrodynamic component; an actual value of at least one variable at least indirectly characterizing an operating point is determined for each transmission process; and the actual value is compared with the set value from the set characteristic diagram. If the actual value deviates from the set value, the manipulated variable for the operating point in question is modified and stored as a new set manipulated variable for said operating point.01-08-2009
20100280720METHOD AND DEVICE FOR INFLUENCING THE TRACTION FORCE DURING SHIFTING OPERATIONS OF A MANUAL TRANSMISSION IN VEHICLES - In a method for influencing the traction force during shifting operations of a manual transmission in vehicles having at least two drive axles, the drive system of the first axle is activated in such a way that the interruptions in traction force occurring at the second axle during shifting operations of the manual transmission are at least partially compensated for.11-04-2010
20100087993AGRICULTURAL VEHICLE WITH A CONTINUOUSLY VARIABLE TRANSMISSION - A vehicle is described having a continuously variable transmission by means of which torque is transmitted from an engine to drive wheels of the vehicle, a braking system for applying a braking force to the drive wheels and a controller for setting the transmission ratio of the transmission in such a manner as to maintain a desired speed of the drive wheels or of the engine. In the invention means are provided for applying to the controller a signal indicative of the engine applied torque, and means for supplying to the controller a signal to indicate application of wheel brakes. The controller is operative when the brakes are applied to discontinue setting the transmission ratio in dependence upon the speed of the drive wheels and to set the transmission ratio instead in such a manner as to minimise the absolute value of the engine output torque or the torque transmitted through the transmission or to follow a desired torque setpoint.04-08-2010
20110202242SENSOR ARRANGEMENT - A sensor arrangement for an electronic transmission control unit of an automatic transmission accommodated in a transmission housing. The sensor arrangement comprises first and second pick-up arrangements for detecting various positions of an actuator system of the automatic transmission. The first pick-up arrangement is provided for monitoring a first position range of the actuator system remote while the second pick-up arrangement is provided for monitoring a second position range of the actuator system different from the first position range. The first and the second pick-up arrangements are connected to a common evaluation unit which, via a single common interface, connects with the electronic transmission control unit for transmitting the position signals of the first and second position range.08-18-2011
20120143449SYSTEM AND METHOD FOR MEASURING AND REDUCING VEHICLE FUEL WASTE - One way to improve fuel efficiency of a vehicle is to improve the usage of various gears. One way to measure the amount of fuel wasted due to suboptimal gear shifting is to compare the actual gear used for various driving conditions with the optimal gear used. Such comparisons may be combined with determinations of amount of fuel used to determine how much fuel has been lost due to suboptimal shifting. These techniques are applicable to tracking employment of other driving best practices as well.06-07-2012
20120143450Controlling of a Vehicle Responsive to Reductant Conditions - Controlling a vehicle responsive to reductant conditions is provided. The method for controlling a vehicle having an engine with an exhaust, the exhaust having a reductant injection system including a reductant storage vessel, the engine further having a fuel system including a fuel storage vessel, may include under degraded reductant conditions, restricting vehicle motion in response to a fuel refill of the fuel storage vessel.06-07-2012
20090210120HYDROSTATIC REGENERATIVE DRIVE SYSTEM - A variable transmission comprises a first fluid working machine (08-20-2009
20090187316PTO OVERSPEED PROTECTION STRATEGY - An exemplary embodiment includes a method of operating a drivetrain. The drivetrain includes a PTO and a transmission having multiple speed ratios. The PTO includes a PTO output member and a PTO input member. The method includes monitoring a speed value representative of a rotational speed of a PTO component, comparing the speed value to a preselected PTO overspeed value, reducing the rotational speed of the PTO component, and overriding a manual command to increase the rotational speed of the PTO component above the preselected PTO overspeed value.07-23-2009
20090177361AUTOMATIC TRANSMISSION FOR A MOTOR VEHICLE - An automatic transmission of a motor vehicle driven by an internal combustion engine with a transmission oil circuit, a main oil pump, mechanically driven by a combustion engine, and an auxiliary oil pump (07-09-2009
20100125395CONTROL DEVICE OF AUTOMATIC TRANSMISSION - A control device of a transmission is capable of instantaneously correcting a torque shortly after starting a motor, and properly correcting a gear operation shortly after starting (at transient time) even in case of coil temperature change. The device includes a gear change end determination unit, a motor stop determination unit, and a coil resistance estimation unit of estimating a coil resistance of the motor alternately by repeating at regular intervals a state of application of a predetermined voltage to the motor during stop before start of gear change and a state of no application; and when the motor is determined stop by the determination units, an initial value of a command voltage to be applied to the motor after start of gear change is corrected in a predetermined time period in accordance with a coil resistance value having been calculated by the coil resistance estimation unit.05-20-2010
20090281694Method and Apparatus for Transitioning an Electrically Variable Transmission - A method is provided for transitioning from an initial to a final transmission mode in an electrically variable transmission (EVT), and includes transitioning to an intermediate mode having an additional speed degree of freedom (DOF), changing a transmission ratio, and engaging a clutch to shift to the final mode. The modes include input and compound split, fixed gear ratio, and electric torque converter (ETC), with and without input from an engine. Output torque is maintained by adjusting a charge on an energy storage device. A brake grounds an input member of the EVT. The EVT has the input member, an output member, a stationary member, and first and second motor/generators. An algorithm transitions between modes by releasing at least one clutch to transition to a mode having an extra speed degree of freedom (DOF), and utilizing the extra speed DOF to change the ratio of the EVT.11-12-2009
20090099739DRIVING FORCE TRANSMISSION DEVICE - A driving force transmission device includes a transfer torque command value calculation section which calculates a transfer torque command value indicating a command value of the transfer torque between two members based on a running state of the vehicle, an energy calculation section which calculates an energy value obtained by multiplying the transfer torque between the two members by a differential rotation rate between the two members at every predetermined sampling time, an energy accumulated value calculation section which calculates an energy accumulated value of accumulating the energy value calculated at every the predetermined sampling time, a map storage section which stores previously a map defining a relationship between the energy accumulated value and a correction torque, and a correction section which acquires the correction torque by applying the energy accumulated value to the map and corrects the transfer torque command value based on the acquired correction torque.04-16-2009
20090088934BICYCLE CONTROL SYSTEM - A bicycle control system is provided with a sensed element, a sensor and a cycle computer. The sensed element is mounted to a first part of a bicycle. The sensor is mounted to a second part of the bicycle at a location to selectively detect the sensed element and send an output signal as the sensor detects the sensed element. The cycle computer is mounted to a part of bicycle with the cycle computer including a receiver arranged to receive the output signal from the sensor. The sensor includes a sensing element that outputs a detection signal upon detecting the sensed element, a processing unit that calculates relative behavior between the first and second parts based on a time interval of the detection signal from the sensing element, and a transmitter that transmits the output signal to the cycle computer based a calculation result of the processing unit.04-02-2009
20110172888METHOD FOR CHANGING GEAR STAGES AND TRANSMISSION ARRANGEMENT - The invention relates to a method for changing gear stages in a transmission having a hydrostatic transmission and a downstream manual transmission, and a corresponding transmission arrangement. First, a desire to shift is detected within the manual transmission to change the gear stages. The hydrostatic transmission and the downstream manual transmission are activated to change the gear stage of the downstream transmission. Whether the gear stage to be engaged through a gear stage change was successfully engaged is detected by a detection device, which is connected to an electronic control unit of the transmission arrangement. If the engagement of the gear stage to be engaged is not successful, the original gear stage is reengaged. After the engagement of the original gear stage, the downstream transmission is again activated such that the gear stage to be engaged is engaged.07-14-2011
20090287383SHIFT-BY-WIRE CONTROL SYSTEM FOR VEHICLE AUTOMATIC TRANSMISSION - A SBW control system is disclosed which is powered by an electric power source on a vehicle to electrically control mode shifting of an automatic transmission of the vehicle. The SBW control system includes: 1) means for inputting a shift command to shift a current operating mode of the automatic transmission to a desired operating mode; 2) means for shifting the current operating mode to the desired operating mode according to the shift command; 3) means for locking an output shaft of the automatic transmission when the desired operating mode is P (park) mode and unlocking the same otherwise; 4) means for detecting an abnormal condition of the vehicle; and 5) means for controlling the locking/unlocking means in such a manner that when the abnormal condition is detected, the output shaft of the automatic transmission is unlocked regardless of whether or not the desired operating mode is P mode.11-19-2009
20090287382Vehicle control system and method - A vehicle control system includes a first powertrain, a second powertrain, and a third powertrain. The first powertrain includes a first power source. The second powertrain includes a second power source. The third powertrain includes a third power source. The vehicle control system also includes an operator control interface. The operator control interface includes a first portion configured to receive a first operator input and a second portion configured to receive a second operator input. The first operator input and the second operator input are indicative of a desired speed and a desired direction. The vehicle control system additionally includes a controller configured to deliver a power control signal to at least one of the first powertrain, the second powertrain, and the third powertrain. The power control signal is a function of the first operator input and the second operator input.11-19-2009
20100100288AUTOMATIC SHIFT CONTROL DEVICE AND VEHICLE - In a clutch engaging and disengaging operation at the time of a shift change, a state in which the clutch position of the clutch is at a specific value between a first clutch position at which a half clutch state finishes and a second clutch position at which the clutch is in a mechanical maximum disengaged state is maintained until completion of a gear change is detected by a gear position sensor. Therefore, even if a dog abutment state occurs between first gears with engaging projections and second gears with engaging recesses, the dog abutment can be resolved properly.04-22-2010
20080275611METHOD AND APPARATUS TO DETERMINE ROTATIONAL POSITION OF AN INTERNAL COMBUSTION ENGINE - A control system for a hybrid powertrain which determines engine crank angle position based upon signal inputs from electric machines of the powertrain is provided. The hybrid powertrain comprises an internal combustion engine and electric machines and an electromechanical transmission selectively operative to transmit torque therebetween. The electric machines are rotatably fixedly coupled to the internal combustion engine via a transmission input shaft. Control modules are adapted to execute a control scheme to determine engine crank angle position. The control scheme comprises code to determine an input shaft angle based upon rotational positions of the electric machines. An offset angle of the input shaft and an angular twist between the engine and the transmission are determined. An engine crank angle offset is determined based upon the offset angle and the angular twist of the input shaft.11-06-2008
20100004831Method for controlling engine torque in hybrid vehicle - The present invention provides a method for controlling engine torque in a hybrid vehicle, in which a point of time when an intake cam is activated is determined such that an engine demand torque is controlled to a level at which system efficiency is maximized within a limited engine output range before activation of the intake cam and the engine demand torque is controlled to a level at which the system efficiency is maximized after activation of the intake cam.01-07-2010
20090319135HYDRAULIC OR PNEUMATIC CONTROL OF AN AUTOMATED SHIFT TRANSMISSION - The invention concerns a hydraulic or pneumatic control device for an automated shift transmission, comprising actuating devices with actuating cylinders (12-24-2009
20080215215Shift-by-wire system - A shift-by-wire system improves responsiveness to a shift command and ensures safety. An electric motor generates a rotational output to be used to switch the ranges of an automatic transmission. A by-wire control circuit unit electrically controls the rotation of the electric motor to comply with an inputted shift command. If a re-shift command is inputted during switching control, the by-wire control circuit unit modifies rotation control. The modification can be implemented until the rotational position of the electric motor reaches a new target rotational position to comply with the re-shift command.09-04-2008
20130024078VEHICLE POWER GENERATION SYSTEM AND METHOD THEREOF - The vehicle power generation system includes: a power generation unit, a power supply unit, a clutch mechanism, and a control unit. The power generation unit includes generator, power input shaft, and a power output unit. The clutch mechanism includes a speed increasing unit and a motor controller for attaching the speed increasing unit to the crankshaft or detaching the speed increasing unit from the crankshaft. The control unit is electrically connected to the motor controller, and includes a power generation condition determining unit.01-24-2013
20080208418Motor-Driven Vehicle with Transmission - A motor-driven vehicle includes at least an engine, control devices arranged to control a transmission driven by the engine, a first sensor that is arranged to communicate with the control devices, and a second sensor that is arranged to communicate with the control devices, with the control devices being arranged to receive a first signal sent from the first sensor that includes information about the gradient of the surface on which the vehicle is being driven, and with the control devices being arranged to receive a second signal sent from the second sensor that includes information about torque. The control devices are arranged to correct the first signal in response to the second signal, and to control the transmission in response to the corrected first signal, and thereby compensate for the effect of the torque on the first sensor.08-28-2008
20110208393METHOD FOR LEARNING REFERENCE POSITION FOR TRANSMISSION AND VEHICLE - A method for allowing a controller of a transmission to learn a reference position of the transmission and a vehicle for which this method can be executed. By the method, when the shift lever is subjected to a predetermined input operation, the controller starts learning a reference position (for example, the gear end, the synchronization end, or the clutch engagement position) of the transmission.08-25-2011
20080269996Control device for vehicular power transmitting apparatus - A control device is disclosed which can obtain increased fuel economy performance depending on a kind of fuel in a vehicle having an internal combustion engine and an electric motor when the kind of fuel supplied to the internal combustion engine is altered. A determining vehicle speed (V10-30-2008
20090055059SHIFT-BY-WIRE SELECTOR CONTROL SYSTEM FOR A MOTOR VEHICLE TRANSMISSION - A method for operating a multi-stable shift-by wire selector control system of a motor vehicle transmission. The multi-stable shift-by wire selector control system includes a multi-stable selector which is operable by the driver of the vehicle to select a respective one of the operating modes of the transmission, an arrangement of illuminated labels indicating the selector mode and an indexing mechanism for maintaining the immobilization of the selector in its different positions.02-26-2009
20090030582Motor Vehicle, Indicating Device and Operating Method - An indicating device for a motor vehicle and an operating method are provided. The motor vehicle includes a drive train with at least one drive unit. The indicating device shows in a differentiable manner to the driver the drive states of accelerating, unpowered driving (coasting) and decelerating using the drive train, and at a minimum signals to the driver when the coasting state exists so as to permit the driver to optimize efficient use of the vehicle.01-29-2009
20090076689AUTOMATIC TRANSMISSION SOLENOID CONTROL SYSTEM AND METHOD - An automatic transmission controller system and method are disclosed. In particular, disclosed is a system and method for controlling solenoid pressure control valves associated with an automatic transmission. The automatic transmission controller system comprises a controller which is configured to receive one or more electrical signal inputs for attributing each solenoid pressure control valve with one of a set of I-P calibration curves.03-19-2009
20100017077Slip Suppression Control System for Vehicle - A slip suppression control system for a vehicle includes a monitored value detecting device for detecting a monitored value corresponding to a difference between a rotational speed of a front wheel and a rotational speed of a rear wheel of the vehicle, a threshold determiner unit configured to determine a relationship between the monitored value detected by the monitored value detecting device and a threshold; and a controller configured to initiate traction control for reducing a driving power of a drive wheel when the threshold determiner unit determines that the monitored value exceeds a predetermined start threshold, wherein the threshold determiner unit is configured to count a return time which lapses from when the monitored value exceeds the start threshold until the monitored value becomes smaller than second threshold; and wherein the controller is configured to determine whether or not to terminate the traction control based on the return time.01-21-2010
20090005941ANTI-HUNT SYSTEM AND METHOD FOR PARALLEL PATH VARIABLE TRANSMISSION - A system and method for largely controlling transmission gear ratio oscillation is disclosed. When shifts are executed substantially at synchronous points rendering hysteretic anti-hunting schemes impractical, the disclosed techniques in any combination thereof may allow for oscillation control via an overridable lock-out timer. For oscillation control during incline navigation and other similar loading scenarios, the transmission may be selectively locked if certain operational criteria are met.01-01-2009
20090143946Power train control system with engine speed override - A power train is provided having an engine operably coupled to a transmission. The power train also has at least one operator interface device, each operator interface device being configured to generate an operator request. In addition, the power train has a controller configured to, in response to a first operator request, override a second operator request for a desired target engine speed by lowering a current engine speed to a modified target engine speed below the desired target engine speed.06-04-2009
20090143947AUTOMATIC TRANSMISSION ACTUATORS AND SENSORS HAVING INTEGRATED ELECTRONICS - An electronic-hydraulic controller for an automatic transmission includes a transmission control module (TCM) which is disposed outside the transmission housing and is connected to the actuators, sensors and switches within the transmission by a serial data link such as the car area network (CAN). Electrical power is also provided to the components within the transmission resulting in a connector requiring only five or six terminals. Each of the actuators, sensors and switches includes its own integrated electronic circuitry which receives, stores and provides data and allows it to communicate through the serial data link with the externally mounted control module. The electronic circuitry of each actuator stores data regarding its input signal to output pressure and flow characteristics which facilitates replacement of the transmission control module.06-04-2009
20110144871METHOD AND DEVICE FOR SELECTING A STARTING GEAR IN A VEHICLE - A method and a vehicle transmission for selecting a starting gear in a vehicle are provided, the method including steps of measuring a starting gear selection parameter, and selecting a starting gear for the next coming vehicle take-off in dependence of the measured starting gear selection parameter, wherein the starting gear selection parameter is the number of vehicle take offs per time unit. Additionally the parameter can be acceleration in movement of an accelerator pedal being depressed by a driver, accelerator pedal position and clutch wear. Benefits are increased clutch endurance for a vehicle that during at least a period has to perform frequent take-offs and at the same time enhancing take-off comfort for a vehicle that during at least a period goes long-distance.06-16-2011
20090082931SHIFT CONTROL DEVICE FOR AUTOMATIC TRANSMISSION AND CONTROL METHOD THEREOF - An automatic transmission calculates a current thermal load state of the frictional element, predicts (S03-26-2009
20090204299METHOD FOR ELECTRONICALLY CONTROLLING A BICYCLE GEARSHIFT AND ELECTRONIC SYSTEM FOR A BICYCLE - A method for electronically controlling a bicycle gearshift and a bicycle electronic system perform gearshifting. To perform this gearshifting, a displacement of an actuator from a current position (P) to a position (P1, PN) of engagement of a chain on an extreme toothed wheel of a gearshift group is started (08-13-2009
20120078476METHOD TO DETERMINE TORQUE - A powertrain includes a transmission coupled to a driveline. A method for monitoring torque in the powertrain includes monitoring signal outputs from a first rotational sensor and a second rotational sensor configured to monitor respective rotational positions of first and second locations of a driveline, determining a positional relationship between the first and second locations using positional identifiers of the first and second rotational sensors, deriving a twist angle from the positional relationship between the first and second rotational sensors, calculating a magnitude of driveline torque corresponding to the twist angle, and controlling the vehicular powertrain according to the calculated magnitude of driveline torque.03-29-2012
20080262683SYSTEMS FOR PROVIDING AN AUTOMOBILE ELECTRONIC TRANSMISSION CONTROL MONITORING UNIT WITH A LATCHDOWN MECHANISM - The present disclosure provides systems for microprocessors to control a transmission power relay output with a latchdown mechanism in the event that either microprocessor decides it is appropriate to de-energize the relay. Advantageously, the present disclosure allows, for example, the transmission control to be performed by an existing dual microprocessor configuration instead of a custom-designed application specific integrated circuit (ASIC). The microprocessor-based software is more easily updated or changed to add functionality. Further, the present disclosure minimizes unique development with respect to electronic transmission control with a less complex design.10-23-2008
20090204300SHIFTING DEVICE FOR A MANUAL TRANSMISSION - A shifting device is provided for the gear selection in a manual transmission that includes, but is not limited to a shift/selector lever that can be moved in a shifting degree of freedom and a selection degree of freedom, a measuring sensor for measuring a current position (s, w) of the shift/selector lever in the two degrees of freedom, a two-dimensionally controllable actuator device and a control circuit for the controlling of the actuator device in a position (S, W) which is associated with the sensed position (s, w) of the shift/selector lever, which depicts the movement region of the shift/selector lever on a region of possible positions of the actuator device. The movement region of the shift/selector lever included, but is not limited to a two-dimensional prohibited part region, in which the shift/selector lever is simultaneously moveable in both degrees of freedom. The control circuit depicts this prohibited part region on positions on an edge of the region of the possible positions of the actuator device.08-13-2009
20110144870FAIL-TO-NEUTRAL SYSTEM AND METHOD FOR A TOROIDAL TRACTION DRIVE AUTOMATIC TRANSMISSION - A fail-to-neutral diagnostic technique for a transmission that includes a variator may include monitoring a state of a pressure differential valve fluidly coupled to a high side pressure applied to at least one actuator coupled to at least one corresponding roller of the variator and also fluidly coupled to a low side pressure applied to the at least one actuator, determining from the state of the pressure differential valve a variator torque sign corresponding to whether torque transferred by the at least one roller is positive or negative, determining an expected variator torque sign based on current operating conditions of the transmission, and commanding the transmission to a true neutral condition if the determined variator torque sign is different from the expected variator torque sign.06-16-2011
20090105913Method for Reaching a Neutral Position of a Gearshift Fork in a Shift Transmission - The invention relates to a method for reaching a neutral position N located between two end positions of a gearshift fork in a shift transmission in a motor vehicle from a starting position of the gearshift fork. The method allows finding the neutral position of the gearshift fork without a sensor determining the position of the gearshift fork or in the alternative in case such the sensor is defect.04-23-2009
20090248260SHIFTING SYSTEM WITH TACTILE FEEDBACK - Methods and apparatus are provided for a tactile feedback system. The system comprises a transmission indicator having a position, the position adapted to be adjusted by a user, a feedback device coupled to the transmission indicator, the feedback device adapted to produce a vibration in response to a feedback signal, and a control system adapted to detect the position of the transmission indicator and to transmit a feedback signal to the feedback device.10-01-2009
20120197501SYSTEM AND METHOD OF VEHICLE OPERATING CONDITION MANAGEMENT - A vehicle operating condition profile can be determined over a given route while also considering imposed constraints such as deviation from time targets, deviation from maximum governed speed limits, etc. Given current vehicle speed, engine state and transmission state, the present disclosure optimally manages the engine map and transmission to provide a recommended vehicle operating condition that optimizes fuel consumption in transitioning from one vehicle state to a target state. Exemplary embodiments provide for offline and online optimizations relative to fuel consumption. The benefit is increased freight efficiency in transporting cargo from source to destination by minimizing fuel consumption and maintaining drivability.08-02-2012
20120197500SYSTEM AND METHOD OF SPEED-BASED DOWNSPEED COASTING MANAGEMENT - A velocity profile can be used in conjunction with vehicle operating condition data to determine a gear shift schedule that mitigates the amount of service brake effort required to slow a vehicle by making optimal use of engine speed, friction and engine brakes. The gear shift point drives the engine to a higher operating speed and greater frictional torque, slowing the vehicle, which can then coast to a desired speed. The gear shift point can be timed to minimize fuel consumption during the maneuver. Thus, a vehicle downshift event is created based on the transmission gear recommendation. The benefit is increased freight efficiency in transporting cargo from source to destination by minimizing fuel consumption and maintaining drivability.08-02-2012
20100179736ELECTRONICALLY CONTROLLED DIFFERENTIAL LOCKER - An electronic locking mechanism for a vehicle differential assembly includes a lock element movable in response to an actuation signal between an open position and a locked position. The lock element generally forces side gears of the differential assembly to turn generally at a same rate when the lock element is in the locked position. The electronic locking mechanism further includes a processor configured to determine a status of the differential assembly from a current profile that includes the actuation signal and an induced current. The determined differential assembly status is generally one of an “activated and locked” status, an “activated but unlocked” status, a “deactivated but locked” status, and a “deactivated and unlocked” status.07-15-2010
20080215214Control apparatus and control method for vehicular drive apparatus - A control apparatus and a control method for a vehicular drive apparatus that includes a driving power source, and a power transmission device that transmits power from the driving power source to a drive wheel are provided. It is determined that a malfunction occurs in the power transmission device, when a comparison value remains equal to or above a predetermined value for a predetermined period. The comparison value is obtained by making a comparison between an actual value and a theoretical value that relate to a rotational speed of a predetermined rotational member that constitutes at least a part of the vehicular drive apparatus. The predetermined period is set according to an operating state of the power transmission device. Thus, it is possible to reduce the possibility that it is erroneously determined that a malfunction occurs, and to quickly determine that a malfunction occurs.09-04-2008
20100191427Apparatus for sensing gearbox shifting positions - The invention relates town apparatus for connection to a gearbox actuating element of an engine gearbox, having sensors (07-29-2010
20100228451HYDRAULIC PRESSURE CONTROLLING APPARATUS - A hydraulic pressure controlling apparatus includes a hydraulic pressure controlling portion controlling a hydraulic pressure supplied to plural engagement elements of an automatic transmission apparatus, a mechanical oil pump supplying the hydraulic pressure to the hydraulic pressure controlling portion, an electric oil pump supplying the hydraulic pressure to a starting shift stage engagement element, and an electronic controlling portion controlling operations of the hydraulic pressure controlling portion, a power source and the electronic oil pump based on a signal indicating a predetermined state of a vehicle, wherein the electronic controlling portion controls the hydraulic pressure controlling portion so as to forbid a shifting to a shift stage, which is likely to induce an interlock at the automatic transmission apparatus, based on an engagement of the starting shift stage engagement element in a case where the electronic controlling portion determines that the electric oil pump is in an on-fail state.09-09-2010
20100228452HYDRAULIC PRESSURE CONTROLLING APPARATUS - A hydraulic pressure controlling apparatus includes a hydraulic pressure controlling portion controlling a hydraulic pressure supplied to engagement elements of an automatic transmission apparatus, a mechanical oil pump supplying the hydraulic pressure to the hydraulic pressure controlling portion, an electric oil pump supplying the hydraulic pressure to a starting shift stage engagement element, a first check valve provided at a first hydraulic conduit, allowing a supply of the hydraulic pressure from the electric oil pump to the starting shift stage engagement element and interrupting an inverse supply of the hydraulic pressure, and an electronic controlling portion controlling operations of the hydraulic pressure controlling portion, a power source and the electronic oil pump, wherein the electric oil pump supplies the hydraulic pressure to the starting shift stage engagement element via the first hydraulic conduit, which differs from a second hydraulic conduit and at which the first check valve is provided.09-09-2010
20100228450CONTROL APPARATUS OF AUTOMATIC TRANSMISSION - A control apparatus of an automatic transmission has an engagement part, a power-ON/OFF state judgment section and a control section controlling a capacity of the engagement part. The control section compares an actual input revolution speed difference absolute value of an absolute value of a difference between an input revolution speed when engaged and an actual input revolution speed with a target input revolution speed difference absolute value of an absolute value of a difference between the input revolution speed when engaged and a target input revolution speed, then a deviation is determined by subtracting the target input revolution speed difference absolute value from the actual input revolution speed difference absolute value. When the deviation is positive, the capacity is increased. When the deviation is negative, the capacity is reduced. When the deviation is zero, a previous capacity that is set before the comparison of the both absolute values is maintained.09-09-2010
20100228449CONTROL SYSTEM OF AUTOMATIC TRANSMISSION - A control system controls an automatic transmission. The automatic transmission comprises a stepwise variable transmission section that includes a plurality of frictional elements and establishes a desired speed by a shift change disengaging one of the frictional elements and engaging the other of the frictional elements and a continuously variable transmission section that establishes a desired speed continuously. The control system makes a speed change control of the continuously variable transmission section cooperate with a change of an input rotation speed of the stepwise variable transmission section. The control system is configured to carry out during the shift change of the stepwise variable transmission section, judging whether a delivery of a torque from a disengaging side frictional element to an engaging side frictional element is completed or not; and starting the speed change control of the continuously variable transmission section upon judgment of the completion of the delivery of the torque regarding that an inertial phase has started.09-09-2010
20090076690Engine Hydraulic Parallel Series Rear Wheel Drive Hybrid Vehicle - The present invention relates to an engine hydraulic parallel series rear wheel drive hybrid vehicle, including a power transmission system for conventional vehicle, an electric control unit and a hydraulic auxiliary power transmission system, that is, braking energy regeneration auxiliary system and idling energy control system. A brake pedal and an accelerator pedal are connected with the hydraulic auxiliary power transmission system through the electronic control unit. The electronic control unit functions to realize harmonious control between the power transmission system and the hydraulic auxiliary transmission system. The electronic control unit receives electric signals given by the brake pedal, the accelerator pedal, the engine and the gear-box. After control strategic operation, the electronic control unit outputs an instruction signal of the auxiliary hydraulic power transmission system. The present invention can realize the recovering and releasing of hydraulic braking energy, utilizing of idling energy, and idling and shutting down of engine. The present invention has the advantages of higher efficiency of kinetic energy conversion, smaller noise, longer lifetime of engine, gas-saving, simpler structure and lower cost. The present invention is applicable to the reconfiguration of existing vehicle.03-19-2009
20090043464Method and device for specifying an output variable of a drive unit - In a method for checking the operation of specifying an output variable of a drive unit, when a setpoint value of the output variable is specified, a check is performed as to whether this specification of the setpoint is caused by an operation of the control element. If it is determined that this is not the case, then an error is detected.02-12-2009
20100222971CONTROL APPARATUS AND METHOD FOR AUTOMATIC TRANSMISSION SYSTEM - A control apparatus for an automatic transmission system having a serial arrangement of a stepwise variable automatic transmission mechanism and a continuously variable automatic transmission mechanism, the control apparatus being disposed in the automatic transmission system and performing a shift control of the continuously variable automatic transmission mechanism in accordance with variation in transmission ratio of the stepwise variable automatic transmission mechanism, the control apparatus including a control section configured to execute a retardation processing upon shift control of one of the continuously variable transmission mechanism and the stepwise variable transmission mechanism which has a smaller response delay of an actual transmission ratio from a target transmission ratio than that of the other transmission mechanism.09-02-2010
20130218426METHOD AND APPARATUS TO DETERMINE TORQUE IN A POWERTRAIN SYSTEM - A method for monitoring torque in a gear train includes coincidentally determining angles of rotation of first and second rotationally coupled members of the gear train. Each of the members employs a respective rotational position sensor. Each of said angles of rotation are determined based upon times corresponding to a last signal pulse, a next-to-last signal pulse, and a total quantity of signal pulses generated by the respective rotational position sensor during a current sampling interval. A twist angle corresponding to a difference between the angles of rotation of the first and second rotationally coupled members of the gear train is determined, and torque corresponding to the twist angle is calculated.08-22-2013
20130218427SYSTEMS AND METHODS TO ENABLE ECO-DRIVING - Systems and methods for enabling eco-driving are herein provided. Systems and methods in accordance with the present disclosure allow for real-time monitoring of greenhouse gas emissions and other variables that influence the environmental friendliness of vehicle operation. Systems and methods in accordance with the present disclosure also provide analytical tools for quantifying the environmental friendliness of vehicle operation and driving patterns.08-22-2013
20100204892CONTROL DEVICE OF VEHICULAR AUTOMATIC TRANSMISSION - In a control of a vehicular automatic transmission, an engaging device provided in a power transmission path between an engine and driving wheels is brought into a slipping state or a release state when a certain neutral control condition is satisfied while a shift lever is placed in a running position, the engaging device is engaged so as to increase a torque transmission capacity thereof when a certain neutral control cancellation condition is satisfied during neutral control under which the engaging device is in the slipping state or the release state, and an engaging pressure of the engaging device is held at a constant pressure level for a given period of time when an accelerator pedal is depressed while the engaging device is engaged so as to increase the torque transmission capacity thereof.08-12-2010
20120143448AUTOMATIC TRANSMISSION - In an automatic transmission with a speed changer having a plurality of engagement elements and configured to shift the speed changer into a selected one of a plurality of shift stages by switching engaged and disengaged states of the engagement elements, a first rotation sensor is provided for detecting input rotation of the speed changer and a second rotation sensor for detecting output rotation of the speed changer. Also provided is a transmission controller configured to determine whether a change in input torque inputted into the speed changer occurs. The transmission controller is further configured to determine that interlock has occurred in the speed changer, when there is no pulse signal output from the second rotation sensor though, during a vehicle stopped state, the input-torque change has occurred and the pulse signal from the first rotation sensor has been outputted.06-07-2012
20120245808VEHICLE CONTROL APPARATUS AND VEHICLE CONTROL METHOD - A vehicle control apparatus includes a detection unit that detects whether or not a reverse driving operation to select a reverse driving of a vehicle has been performed, wherein the vehicle backs up the vehicle, and a control unit that executes vehicle speed limiting control of limiting a traveling speed of the vehicle to a speed equal to or lower than a first speed when the vehicle backs up, and prohibits execution of the vehicle speed limiting control when the traveling speed of the vehicle is equal to or higher than a second speed that is higher than the first speed and when the detection unit detects that the reverse driving operation has been performed.09-27-2012
20120130606SYSTEM AND METHOD FOR DETERMINING OIL CHANGE TIMING OF AUTOMATIC TRANSMISSION - A system and method for determining the time to change the oil of an automatic transmission includes: continuously tracing/storing oil change-related information, which serves as a basis for an oil change, from the point of time when new automatic transmission oil is provided, such as the point in time of a new car purchase or the point in time of an automatic transmission oil change; determining whether or not it is time to change the oil of the automatic transmission on the basis of the oil change-related information, a preset change reference value, an oil temperature reference value, a recommended vehicle travel mileage and the like. When it is determined to be the time to change the oil of the automatic transmission, an automatic transmission oil change signal is generated to inform a driver of the necessity of changing the oil of the automatic transmission.05-24-2012
20080294317Method and apparatus to shift-by-speech for semi-manual transmissions with intelligent shifting algorithm - A shift-by-speech transmission system with intelligent shifting algorithm allows a driver or a motorcyclist to choose a desired gear by voice command. An intuitive and engaging shift-by-speech technology disclosed in the present invention, called “VoiceShift”, allows the driver or the motorcyclist to switch gears by voice commands. VoiceShift also allows the driver or the motorcyclist to skip-shift gears in non-sequential manner, thereby giving the driver a sense of freedom and excitement similar to a stick-shift manual transmission vehicle. A novel intelligent shifting algorithm of the shift-by-speech transmission system is capable of auto-correcting the driver's judgment error in skip-shifting by engaging a closest mechanically-safe gear to the driver's desired gear issued via voice command.11-27-2008
20120143447POWER TRAIN CONTROLLER AND ASSOCIATED MEMORY DEVICE - A power train subsystem for a motorized vehicle and methods of programming such power train controllers of the power train subsystem are disclosed. The power train subsystem may include a power train component, a controller, and a memory device. The controller may be coupled to the power train component to control operation of the power train component. The memory device may include boot code, application software, standard calibration parameters, and custom calibration parameters. The boot code provides an environment upon which the application software executes per the standard calibration parameters and custom calibration parameters. The standard calibration provides parameters which configure the controller for a range of vehicular applications. The custom calibration parameters provide parameters which configure the controller for a particular vehicular application in the range of vehicular applications.06-07-2012
20090048745FLEXIBLE FUEL VARIABLE BOOST HYBRID POWERTRAIN - The present invention provides a flexible fuel, spark ignition, variable boost, hybrid powertrain having a supercharger or a turbocharger. In a first embodiment, a spark ignition, internal combustion engine includes a supercharger driven by the engine output through a variable speed drive. A hybrid transmission having an internal electric motor/generator provides supplemental power. A plurality of sensors including a fuel sensor provide data to a master engine controller which controls the operation of a transmission controller, the variable speed supercharger, the fuel supply and the ignition system. In a second embodiment, the motor/generator is associated with the supercharger and is connected therewith through a variable speed drive and also connected to the engine output. In a third embodiment, the supercharger is replaced with a turbocharger.02-19-2009
20130138306TORQUE TRANSFER MECHANISM AND METHOD FOR CONTROLLING IN A VEHICLE LAUNCH OPERATION - A powertrain for a vehicle is provided having an engine, a transmission, a torque transfer mechanism, a hydraulic fluid circuit, and a transmission control module. The torque transfer mechanism includes a hydraulic fluid pump and is drivingly connected to an output member of the engine and an output member of the torque transfer mechanism is drivingly connected to the input member of the transmission. The hydraulic fluid circuit has a hydraulic valve in communication with the first fluid port of the hydraulic fluid pump. The transmission control module include a control logic for operating the powertrain during a vehicle launch event.05-30-2013
20130138307Drop Box for Powertrain - An output transfer group, or drop box, can include a housing and a gear transfer train, rotatably supported within the housing, that includes an input gear adapted for enmeshing engagement with a transmission output shaft and a gear transfer output shaft that is rotatable upon rotation of the input gear. A coupler can be provided that includes a hub rotatively coupled with the gear transfer output shaft, a bearing carrier, a coupler output shaft rotatively coupled to the bearing carrier, and a coupling mechanism rotatively coupled to the bearing carrier. The coupling mechanism can be movable between an engaged position, wherein the coupling mechanism is rotatively coupled to the hub, and a disengaged position, wherein the coupling mechanism is disengaged from the hub. A solenoid can be arranged with the coupling mechanism to selectively move the coupling mechanism from the disengaged position to the engaged position.05-30-2013
20130144497METHOD TO CONTROL A HYBRID TRANSMISSION USING ON-OFF SWITCHES CONTROLLING HYDRAULIC FLOW TO A CLUTCH - A transmission includes a plurality of synchronously operated clutches selectably transmitting torque from a torque generative device to an output member. A method to control the transmission through a shift event includes monitoring a desired shift event including monitoring a clutch to be engaged, determining a time at which the clutch to be engaged will be synchronized, determining a required clutch fill time for the clutch to be engaged, and actuating an on-off hydraulic control switch selectably providing pressurized hydraulic fluid to the clutch to be engaged based upon coordinating the time at which the clutch to be engaged will be synchronized and the required clutch fill time.06-06-2013
20110035121SHIFT RAIL TRANSMISSION POSITION SENSING - Receiving sensor data related to position of a gear in a transmission, the sensor data including data from a first sensor and data from a second sensor; determining a first indicated position of the gear from the data from the first sensor; determining a second indicated position of the gear from the data from the second sensor; comparing the first indicated position to the second indicated position; and determining based on the comparison a gear engagement status of the gear.02-10-2011
20110035122SHIFT RAIL TRANSMISSION POSITION SENSING WITH A MINIMUM NUMBER OF SENSORS - A processing component configured to receive position sensor data from a first sensor attached to a shift rail of a transmission and determine from the first sensor data whether the shift rail is in a position of engagement of a first gear or a second gear or in a neutral position; receive position sensor data from a second sensor attached to the shift rail, determine from the second sensor data whether the shift rail is in a position of engagement of the first gear or the second gear or in the neutral position; compare the position determined from the first sensor data with the position determined from the second sensor data, and verify the shift rail position based on the comparison.02-10-2011
20090062995CONTINUOUSLY VARIABLE TRANSMISSION CONTROL DEVICE, CONTINUOUSLY VARIABLE TRANSMISSION, AND VEHICLE EQUIPPED WITH THE SAME - A transmission 03-05-2009
20090062994AUTOMATIC GEAR SHIFTING CONTROL DEVICE OF VEHICLE - An automatic gear shifting control device of a vehicle can execute an automatic gear shifting control in response to a larger rotational speed. The automatic gear shifting control device includes a gear shifting control instruction part that executes an automatic gear shifting operation of an AMT in response to at least vehicle-speed information. First and second sensors detect rotational speed of front and rear wheels. A rotational-speed-difference detector detects the difference in rotational speed between the front and rear wheels based on information from the first and second sensors. The control part is configured to execute an automatic gear shifting control in response to the vehicle-speed information calculated based on the larger rotational speed out of the rotational speed of the front wheel and the rotational speed of the rear wheel when the difference in rotational speed is detected by the rotational-speed-difference detector.03-05-2009
20110246032METHOD FOR DETERMINING THE OUTPUT ROTATIONAL SPEED OF A MANUAL TRANSMISSION - A method for determining the output speed (N_AB) of a manual transmission of a motor vehicle. The output speed (N_AB) is calculated during a period of a shifting operation in which the current gear is disengaged and the new gear has yet to be engaged. The calculated output speed (N_AB) is used for controlling adjustment of the speed of the transmission input shaft (N_EG) to the speed of the transmission output shaft, or the calculated output speed (N_AB), is used for checking the plausibility of a value of the output speed (N_AB) as determined by the sensors.10-06-2011
20110246033SELF ADJUSTING SHIFT CABLE ALIGNMENT FOR A TRANSMISSION RANGE CONTROL MODULE SYSTEM - A transmission includes a controller that uses force feedback from a detent mechanism to determine appropriate actuator output for achieving a desired transmission range, which faciliates the implementation of “shift by wire” systems on pre-existing transmission designs.10-06-2011
20120245809METHOD AND APPARATUS FOR SHIFTING A BICYCLE TRANSMISSION - A computer-controlled apparatus for setting destination speed stages of a bicycle transmission comprises a shift command unit and a transmission control unit. The shift command unit generates shift commands, and the transmission control unit receives the shift commands and generates transmission command signals for causing the bicycle transmission to move to a destination speed stage. When the shift command unit is operated for a first time interval, the transmission control unit generates a first transmission command signal for causing the bicycle transmission to move through one speed stage to a first destination speed stage. When the shift command unit is operated for a second time interval greater than the first time interval, the transmission control unit generates a second transmission command signal for causing the bicycle transmission to move through a plurality of speed stages to a second destination speed stage.09-27-2012
20120245807CONTROLLER FOR CONTINUOUSLY VARIABLE TRANSMISSION AND CONTROL METHOD THEREOF - A controller controls a continuously variable transmission including a variator with a primary pulley, a secondary pulley, and a power transmission member mounted therebetween. A torque converter is provided with a rotational speed detector detecting the rotational speed of a rotor located closer to drive wheels than the torque converter, a rotational speed change amount calculator calculating a change amount in the rotational speed per unit time, a limit setting unit that sets a higher absolute value of a limiter for the change amount as a rotational speed difference between an input shaft and an output shaft of the torque converter increases, a final change amount setting unit setting the smaller of the absolute value of the change amount and of the limiter as a final change amount, and a hydraulic controller controlling a hydraulic pressure to the variator based on the final change amount.09-27-2012
20120191307Speed Changing Control System for a Vehicle - A speed changing control system for a vehicle including a speed changing device for speed changing a rotational power from an engine and outputting the resultant power, a speed changing control unit for setting a speed change ratio of the speed changing device, and an engine control unit for setting an engine rotational speed of the engine. Based on an operational instruction in response to a driver's operation, a rotational speed reducing instruction is given to the engine control unit for reducing an engine rotational speed set by the engine control unit by a predetermined amount. Also, a speed changing ratio changing instruction is given to the engine control unit for requesting, to a speed changing control unit, a change of the speed change ratio for compensating for the reduction in the engine rotational speed by the rotational speed reducing instruction so as to maintain the vehicle speed.07-26-2012
20120191309Slip Suppression Control System for Vehicle - A slip suppression control system for a vehicle comprises a monitored value detecting device for detecting a monitored value corresponding to a difference between a rotational speed of a front wheel of the vehicle and a rotational speed of a rear wheel of the vehicle; a threshold determiner unit configured to determine a relationship between the monitored value detected by the monitored value detecting device and plural thresholds; and a controller configured to execute traction control for reducing a driving power of a drive wheel based on determination of the threshold determiner unit; wherein the plural thresholds have at least first and second thresholds, and the second threshold is set larger than the first threshold; and wherein the traction control includes an amount-change-based control.07-26-2012
20120191306Vehicle with Transmission Cooling System - The present disclosure relates to a control circuit for a vehicle transmission cooling system having a controller configured to control an air compressor to selectively pressurize a transmission clutch housing and provide air to an alternative vehicle subsystem (or subsystems).07-26-2012
20090326769Slip Suppression Control System for Vehicle - A slip suppression control system for a vehicle comprises a monitored value detecting device for detecting a monitored value corresponding to a difference between a rotational speed of a front wheel of the vehicle and a rotational speed of a rear wheel of the vehicle; a threshold determiner unit configured to determine a relationship between the monitored value detected by the monitored value detecting device and plural thresholds; and a controller configured to execute traction control for reducing a driving power of a drive wheel based on determination of the threshold determiner unit; wherein the plural thresholds have at least first and second thresholds, and the second threshold is set larger than the first threshold; and wherein the traction control includes an amount-change-based control.12-31-2009
20100057309CONTROL DEVICE FOR VEHICULAR AUTOMATIC TRANSMISSION - A control device for a vehicular automatic transmission which can realize a shifting with quickened response with suppressing a turbine blow-up during the shifting is provided. When a response in hydraulic pressure control by a hydraulic pressure control circuit 03-04-2010
20110178685DEVICE FOR EVALUATING THE TRANSVERSE ACCELERATION OF AN AUTOMOBILE VEHICLE AND CORRESPONDING METHOD - A device for evaluating the transverse acceleration of a motor vehicle measures the rotational speeds of two wheels of the vehicle, estimates the transverse acceleration of the vehicle from these speeds, and calculates, as a function of vehicle operating parameters, particularly of the rotational speeds of the wheels and of the transmission ratio engaged, a Boolean slip variable which is negative if the transverse estimated acceleration is relevant for detecting a bend, and which is positive if the reverse is true.07-21-2011
20100057308ADAPTIVE INSTRUCTION SYSTEM FOR A VEHICLE - Disclosed herein are instruction systems for a vehicle. One system comprises a condition sensor configured to detect and generate an output indicative of at least one vehicle condition, a user interface device and a position sensing system configured to detect and generate an output indicative of a user's position relative to a vehicle component. Each instruction is associated with a state of the at least one vehicle condition and the user's position relative to the vehicle component. A controller is programmed and configured to select one of the plurality of instructions based upon the vehicle condition as indicated by the condition sensor output and the user's position as indicated by the position sensing system. The instructions are provided to the user through the user interface device. Methods for using the system are also disclosed.03-04-2010
20090099740Concept for using software/electronics to calibrate the control system for an automatic transmission - A software calibration strategy for calibrating solenoid controlled valves and valve systems in an automatic transmission. The strategy includes identifying a characteristic equation for the valve or valve system that is a mathematical relationship between a current applied to the solenoid and the pressure at the output of the valve or valve system. The valve or valve system is coupled to a test stand that depicts the operation of the valve or valve system in the transmission. Current signals are applied to the valve or valve system, and the output pressures are measured to determine coefficients in the equation using a curve fitting function. The coefficients are then stored in a control unit.04-16-2009
20110040461Systems and Methods for Controlling Manual Transmissions - A method for controlling a manual transmission of a vehicle includes providing a manual transmission comprising a shift fork actuator and a shifter assembly comprising a shift lever, a shift knob disposed on the shifter lever, a shift lever position sensor and a shifter tactile sensor. The tactile sensor may be used to determine when pressure is applied to the shift knob of the shifter assembly and, when pressure is applied to the shift knob, vehicle operating parameters are monitored. A predicted gear selection is determined based on the monitored vehicle operating parameters. An operator gear selection is then determined based on the shift lever position sensor when the shift lever is moved. The operator gear selection is compared to the predicted gear selection and, when the predicted gear selection is the same as the operator gear selection, the manual transmission is shifted to the predicted gear selection.02-17-2011
20090024286METHOD FOR AUTOMATICALLY ENGAGING A PARKING LOCK OF AN AUTOMATIC OR AUTOMATED TRANSMISSION OF A MOTOR VEHICLE - A method of automatically engaging a parking lock of an automatic or automated transmission of a motor vehicle, which can be engaged by way of a selector device depending on a drive position selected by the driver of the motor vehicle and depending on other operating parameters. In order to achieve as little restriction of the drivability of the motor vehicle as possible, without neglecting the safety of the driver and the surroundings, five different embodiments of a Auto-P function are proposed for automatically engaging the parking lock: two of these embodiments are associated with an electrically interrupted ignition circuit of the motor vehicle; two embodiments are associated with an electrically closed ignition circuit and a simultaneously stopped vehicle drive motor and one embodiment is associated with an electrically closed ignition circuit and a simultaneously operating drive motor.01-22-2009
20090118914METHOD FOR OPERATING AN INTERNAL COMBUSTION ENGINE FOR A HYBRID POWERTRAIN SYSTEM - A hybrid powertrain system includes an internal combustion engine operatively connected to a second torque machine to transmit torque to an output member. A method for operating the hybrid powertrain system includes monitoring an operator torque request, determining an output torque command based upon the operator torque request, commanding a transition between an engine-off state and an engine-on state, monitoring an engine crank angle, spinning the engine unfueled, estimating cylinder pressure based upon the engine crank angle during the spinning of the engine, predicting a cylinder pulse torque based upon the cylinder pressure, determining a cancellation torque for the second torque machine based upon the predicted cylinder pulse torque, and controlling motor torque output from the second torque machine based upon the cancellation torque and the output torque command.05-07-2009
20090118915METHOD AND APPARATUS TO PRIORITIZE TRANSMISSION OUTPUT TORQUE AND INPUT ACCELERATION FOR A HYBRID POWERTRAIN SYSTEM - A powertrain includes an electro-mechanical transmission mechanically-operatively coupled to an internal combustion engine and an electric machine adapted to selectively transmit mechanical power to an output member. A method for controlling the powertrain includes operating the transmission in an operating range state wherein input speed can operate independent of output speed and wherein a reactive torque is transmitted through the transmission. The method further includes monitoring commands affecting a requested output torque, monitoring a calculated output torque, and prioritizing between an input acceleration of the transmission and an output torque of the transmission based upon whether operating the transmission in the operating range state is in transient operation or stable operation.05-07-2009
20080215213Method and Device For Determining the Synchronous Force When Shifting a Twin Clutch Transmission of a Motor Vehicle - A method for determining the synchronous force when shifting a twin clutch transmission of a motor vehicle includes the following steps: preparing a situation table that defines typical shifting situations based on currently active gears, and of at least one operating parameter of the motor vehicle, preparing an assignment table that assigns pre-determined synchronous forces to typical shifting situations, detecting an intention to shift, determining the typical shifting situation corresponding to the respective intention to shift, and establishing the synchronous force, which corresponds to the determined typical shifting situation from the assignment table.09-04-2008
20130158822Self-Arming Immobilizer System, Apparatus and Method - There is disclosed a self-arming immobilizer system for immobilizing a vehicle. In an embodiment, the system comprises a signal input for receiving a signal indicating the absence of an authorized operator in a position of control in the vehicle; and an immobilizer unit adapted to receive the signal input, and in response to the signal indicating the absence of an authorized operator in a position of control in the vehicle, switch one or more relays to disable one or more circuits in the vehicle to immobilize and secure the vehicle. In an embodiment, the immobilizer unit is adapted to disable a gear shift link solenoid to disable the gear shift. In another embodiment, the immobilizer unit is adapted to disable a gun rack solenoid to lock the gun rack. In another embodiment, the vehicle is immobilized at idle, and the system allows the vehicle to keep idling until deactivated by an authorized operator.06-20-2013
20130158821METHOD AND SYSTEM FOR VEHICLE DATA COLLECTION - The present disclosure describes roadway map updating using vehicle performance and location information from plural vehicles.06-20-2013
20130158820SAFETY SYSTEM FOR BACKING UP MOTOR VEHICLE - The safety system for backing up a motor vehicle contains a processing device, a switch device, and a brake control device. The processing device is connected with a gear position signal source so as to determine the motor vehicle's gear position, with a distance detection device so as to determine the presence of and distance to an obstacle along the motor vehicle's backing-up path, and with a speed detection device so as to determine the motor vehicle's speed. The processing device combines all the information and sends signals to the brake control device through the switch device to brake the motor vehicle in various manners. The driver in the meantime can be alerted about the potential hazard.06-20-2013
20080255737CONTROL APPARATUS AND METHOD FOR CONTINUOUSLY VARIABLE TRANSMISSION - When the vehicle is traveling on an uphill road (step 10-16-2008
20110054744SYSTEM AND METHOD FOR DETERMINING ENGINE FRICTION - An engine control system includes a combustion torque determination module, a friction torque determination module, and a control module. The combustion torque determination module determines a combustion torque of an engine based on pressure inside a cylinder of the engine during an engine cycle. The friction torque determination module determines friction torque of the engine based on the combustion torque, acceleration of an engine crankshaft, effective inertia of the engine crankshaft, and a pumping loss in the cylinder during the engine cycle. The control module adjusts an operating parameter of the engine based on the friction torque.03-03-2011
20110257852SHIFT CONTROL DEVICE - There is provided a shift control device which is provided in a shift operation unit including: a plurality of shift positions corresponding to states of a transmission; a shift lever which selects one of the plurality of shift positions; a home position to which the shift lever automatically returns; and a shift position detecting unit which outputs a shift position signal when the shift lever is positioned in one of the plurality of shift positions, the shift control device detecting, when the shift position signal is input to the shift control device for more than a recognition time period set for the shift position where the shift lever is positioned, that the shift position is selected or that the shift operation unit has a failure, and including a deterioration state detecting unit which detects a deterioration degree of the shift operation unit, wherein the recognition time period is changed in accordance with the deterioration degree.10-20-2011
20110125375CONTROL APPARATUS AND CONTROL METHOD FOR VEHICLE AUTOMATIC TRANSMISSION - In a control apparatus and a control method for a vehicle automatic transmission in which a plurality of gears with different speed ratios are achieved by selectively engaging a plurality of friction engagement devices and a one-way clutch, if an acceleration request is made in the case where the one-way clutch is in an idling state when a first predetermined gear is to be achieved by engaging the one-way clutch, a pre-synchronization control is executed to transmit torque through a predetermined friction engagement device used to achieve a second predetermined gear at which the one-way clutch is maintained in an idling state, and to continue to change a rotational direction of the one-way clutch toward a rotational direction in which the one-way clutch is brought to a synchronized state, according to the acceleration request.05-26-2011
20100179737 METHOD FOR ADJUSTMENT OF AN AUTOMATICALLY SELECTED GEAR SHIFTING ROTATIONAL SPEED LIMIT IN A VEHICLE - A method is provided for adjustment of an automatically selected gear shifting rotational speed limit when an automatic step geared vehicle transmission is in an automatic gear shifting drive mode, and where the transmission includes a drive mode selector for selection of at least the automatic gear shifting drive mode and a neutral mode. The adjustment of the automatically selected gear shifting rotational speed limit is performed temporarily by a driver of the vehicle when the automatic gear shifting drive mode is selected. Driving flexibility in automatic drive mode increases.07-15-2010
20090171538System and method for controlling driving force of hybrid electric vehicle - The present invention provides a system and method for controlling a driving force of a hybrid electric vehicle which can reduce clutch engagement shock generated during transition from an electric operation mode to an internal combustion engine running mode. For this purpose, the present invention provides a driving force control system of a hybrid electric vehicle including an engine, a motor-generator and a clutch, in which at least one starter-generator directly connected to the engine. The output torques of the engine and the starter-generator are controlled so as to make a difference between the rotational speed of the engine and the rotational speed of the motor-generator reach a predetermined threshold value, and the clutch is engaged when the difference between the rotational speeds reach the value.07-02-2009
20100121542CONTROL DEVICE FOR AN AUTOMATIC TRANSMISSION - A transmission ECU 05-13-2010
20100082207CONTINUOUSLY VARIABLE TRANSMISSION - A continuously variable transmission can have one or more rotatable output shafts, rotatable non-output shafts, continuously variable transmission elements selectively interconnecting at least one non-output shaft and one output shaft so as to permit variation of a transmission ratio therebetween. The transmission can also have one or more control elements for controlling the instantaneously prevailing ratio of the transmission including a sensor device for sensing the rotational position of a non-output shaft, and a processing device for determining the rotational position of the sensed, non-output shaft at a chosen instant. The processing device is connected to control elements to cause variation of the transmission ratio so that the output shaft attains a desired rotational position at a chosen instant.04-01-2010
20090292428CONTROL SYSTEM FOR A MOTOR VEHICLE PROVIDED WITH A SEMIAUTOMATIC GEARBOX WITH DISCRETE RATIOS - The control system comprises 11-26-2009
20110190990SHIFT CHANGE CONTROLLING APPARATUS - The twin clutch-type transmission can include a hydraulic twin clutch including the first clutch and the second clutch disposed on main shafts. The shift change controlling apparatus is configured to control shift change operation to and adjacent speed change stage by alternately changing an engagement state of the first clutch and the second clutch. The shift change controlling apparatus can also execute a pre-shift change of supplying a pre-pressure on one of the first and second clutches, while another of the first and second clutches is engaged. The pre-pressure provides a pre-engagement of the unengaged clutch. First and second clutch actuators are configured to actuate the first and second clutches, respectively. When the pre-shift change is executed, the pre-pressure is applied for a predetermined period and then removed prior to a driving of a shift gear or actuating a shift change.08-04-2011
20100023231TRANSMISSION CONTROL DEVICE - A transmission control device (01-28-2010
20100023230TRANSMISSION WITH SUBSTANTIALLY IDENTICAL GEAR SETS FOR TORQUE LOAD SHARING - A transmission has an input member and an output member, first and second intermediate shafts having substantially identical gear sets with gears concentric with and selectively connectable for rotation with the first and second intermediate shafts, respectively. Output gears are concentric with and rotatable with the output member and mesh with the substantially identical gear sets. First and second torque-transmitting devices are operable for transmitting torque from the input member to the first and second intermediate shafts, respectively. Torque-transmitting mechanisms are mounted concentric with, rotatable about and selectively engagable with the gears mounted on the intermediate shafts. A controller is operatively connected to the torque-transmitting mechanisms and to at least one of the torque-transmitting devices. The torque-transmitting mechanisms and torque-transmitting devices may be engaged such that torque is carried substantially equally by both intermediate shafts during a speed ratio established between the input member and the output member.01-28-2010
20110218716PRE-SELECTION OF GEAR FOR A DOUBLE-CLUTCH TRANSMISSION - A method is provided for preselecting gear in a double-clutch transmission that includes, but is not limited to measuring at least two types of transmission speed of the double-clutch transmission, evaluating the at least two types of transmission speed, determining a next gear of the double-clutch transmission and preselecting the next gear.09-08-2011
20100017076Automatic Transmission Device For Wheel Loader And Wheel Loader - An automatic transmission device for a wheel loader includes: a shift mechanism; a work detection device that detects that the wheel loader is performing an excavation work; and a shift control device that executes control so as to downshift a speed stage at the shift mechanism if the work detection device detects that the wheel loader is performing the excavation work.01-21-2010
20120041652DETERMINATION METHOD FOR ACTUATION TOUCH POINT PRESSURE VALUE OF A FRICTION SHIFT ELEMENT - A method of determining an applied actuation touch point pressure value of a frictionally engaged shift element of a transmission at which transmission, via the shift element, is approximately zero, and an increase in pressure relates to an increase of the power transmission via the shift element. The method includes supplying a predefined pressure to the shift element at which power transmission is zero. Increasing the target pressure by an offset pressure to transfer the shift element into a predefined operating state which initiates time monitoring. Determining a characteristic of the actual pressure. After a testing time, a monitoring period is compared with a reference period. When the monitoring period is less than or equal to the reference period, the applied pressure is set to be equivalent with the target pressure.02-16-2012
20110112732CONTROL DEVICE AND CONTROL METHOD FOR VEHICLE - An ECU executes a program including: a step of starting up an SBW system if lock release is detected; a step of starting up a timer if setting of a reference location corresponding to a P position has been completed; and a step of stopping the SBW system if a power supply is not turned on until a predetermined time T has elapsed.05-12-2011
20120041654METHOD AND APPARATUS FOR CLUTCH PRESSURE CONTROL - A method, apparatus and system for controlling transmission clutch system output pressures is provided. A transmission control unit and a pressure control device including an electro-hydraulic valve and a pressure switch cooperate to provide self-calibrating clutch pressure control systems.02-16-2012
20120041653CONTROL SYSTEM AND METHOD TO INHIBIT AUTOMATIC TRANSMISSION DOWNSHIFING DURING TRAILER SWAY - A control system for a vehicle that is towing a trailer, the control system including a lateral acceleration sensor coupled to the vehicle for determining a lateral acceleration of the vehicle caused by the trailer swaying and generating a lateral acceleration signal based on the lateral acceleration of the vehicle and a transmission controller for receiving the lateral acceleration signal from the lateral acceleration sensor, comparing the lateral acceleration signal to a threshold, and prohibiting a gear switch signal from being transmitted to a transmission of the vehicle when the lateral acceleration signal exceeds the threshold.02-16-2012
20120065848AUTOMATED SYNCHRONIZATION - A method for making the synchronization process in automatic transmissions more robust and shortening the same, while at the same time taking the noise comfort into consideration.03-15-2012
20100305819METHOD, APPARATUS AND COMPUTER PROGRAM PRODUCT FOR DETERMINING VEHICLE ENGINE REVOLUTIONS PER MINUTE AND GEAR POSITION INFORMATION USING LOCATION INFORMATION - An apparatus for determining vehicle gear information and vehicle engine RPM data based in part on usage of location information may include a processor and a memory storing executable computer program code that causes the apparatus to at least perform operations including evaluating first location information identifying one or more positions of a vehicle at respective times in order to determine a speed of the vehicle. The computer program code may further cause the apparatus to compare the determined speed to a first range of speeds that correspond to gears of the vehicle and determine a current gear that the vehicle is operating in based at least in part on the determined speed corresponding to a speed in the first range of speeds associated with a gear. Corresponding computer program products and methods are also provided.12-02-2010
20100274453METHOD FOR SYNCHRONIZED TRANSMISSION GEAR RATIO ENGAGEMENT - A method is provided for changing a gear ratio in a transmission of a motor vehicle. Engagement of a first gear-train component with a second gear-train component is initiated at a predetermined rate. Rotational speeds of the first and the second gear-train components, and whether the rotational speed of the first gear-train component and the rotational speed of the second gear-train component have substantially synchronized is determined. A rate of engagement of the two gear-train components is reduced, if the rotational speed of the first gear-train component has not substantially synchronized with rotational speed of the second gear-train component. The rate of engagement of the two gear-train components is increased, if the rotational speed of the first gear-train component has substantially synchronized with rotational speed of the second gear-train component. Following the conclusion of engagement between the two gear-train components, the gear ratio change is completed.10-28-2010
20120209479VEHICLE HILL START ASSIST SYSTEM - Disclosed is a hill start assist for a vehicle capable of suppressing vehicle movement contrary to driver's expectations and capable of improving driving feel even if the magnitude of detected values regarding the driving direction of driving wheels or that of driving force of the driving wheels are abnormal. Specifically disclosed is a hill start assist (08-16-2012
20120004817METHOD AND SYSTEM FOR DIAGNOSING THE OPERATING STATUS OF AN ASSISTED START-UP MODE FOR A MOTOR VEHICLE - A method and system for diagnosing an operating status of an assisted start-up mode for a motor vehicle. The system includes a driving engine, a transmission including a mechanism determining a piece of engine rotation speed information, a piece of information on a position of an accelerator pedal of the vehicle, a piece of information on a position of a transmission, and a piece of information on torque transmitted to wheels, a detection mechanism producing a malfunction signal for the assisted start-up using the information received, a plurality of encoding mechanisms to produce a follow-up signal for each piece of calculated information received, and a memory saving the follow-up signals.01-05-2012
20110166753WALKING ASSISTANCE DEVICE WITH DETECTION MEMBERS - The present invention relates to a walking assistance device with detection function, which includes a movable frame, a power transmission device mounted under the frame, a detachable power unit mounted on the frame, at least one signal transmitter and at least one signal receiver for detecting the distances from a first portion and a second portion on the user's body to a correspond position of the frame respectively. According to the distances detected, a control unit sends signals to the power transmission device to maintain the distance between the user and the frame within a preset range, therefore to provide supporting forces when the user needs.07-07-2011
20120016558ANTITHEFT DEVICE FOR VEHICLE - An antitheft device for vehicle includes store means storing a parking-lock canceling state activating a parking lock canceling operation and a parking lock state disabling the parking lock canceling operation alternatively, and switching means switching the parking lock state to the parking-lock canceling state upon success of a verification, an initial value of the store means being set to the parking-lock canceling state.01-19-2012
20120022750Deceleration Control System in a Vehicle, Vehicle Including a Deceleration Control System, and Deceleration Control Method - A deceleration control system in a vehicle comprises; a deceleration start detector; a memory for storing a normal state rule and a deceleration state rule to control a driving power, and a controller for controlling the driving power; wherein in the deceleration state rule, the driving power is changed based on the detection by a driving state detector, and a driving power decided in accordance with the deceleration state rule is greater than a driving power decided in accordance with the normal state rule according to the same driving state: and wherein the controller switches the normal state rule to the deceleration state rule and controls the driving power in accordance with the deceleration state rule, based on the detection by the driving state detector, when the deceleration start detector detects that the deceleration has started.01-26-2012
20100004830Control For Managing Actuator Output Pressure Applied to A Torque Transmitting Mechanism of a Multi-Speed Transmission - A method for managing torque transmitting mechanism actuator output pressure under low supply pressure conditions is provided. The method is executable to control engagement of a torque transmitting mechanism during such conditions.01-07-2010
20120158256DRIVING SUPPORT DEVICE - Provided is a driving support device that allows a driver to confirm the travelling routes of the wheels of a vehicle from an image indicating the circumference of the vehicle.06-21-2012
20120072082METHOD FOR ACTIVATING A UNIT OF A TRANSMISSION - A method of actuating an assembly of a transmission, with which are associated a plurality of actuators with whose help the assembly can in principle be actuated, such that out of the actuators available in principle for actuation, a control unit selects at least one actuator for the actual actuation and activates the selected actuator with an output signal in such manner that a status parameter of the actuated assembly corresponds to or follows a control-side nominal value, such that out of the actuators available in principle for actuating the assembly, the control unit selects at least one actuator for the actual actuation of the assembly in such manner that, for all the actuators available in principle for actuating the assembly over the operating life of the transmission, the extent of their utilization is approximately uniform.03-22-2012
20120109473CLUTCH CONTACT POINTS - A method for controlling a twin clutch transmission including at least two partial drive trains, each of which is coupleable to a combustion engine using a clutch.05-03-2012
20120078475METHOD FOR DETECTING POWERTRAIN TORQUE OUTPUT - A powertrain includes a transmission coupled to a driveline. A method for monitoring torque of the driveline includes monitoring signals from first and second rotational sensors located at respective first and second rotationally-coupled positions of the driveline separated by a distance along the driveline, determining rotation of the driveline at the first and second rotationally-coupled positions from said signals, determining a twist angle derived from a difference between the rotations of the driveline at the first and second rotationally-coupled positions, calculating a driveline torque corresponding to the twist angle, and controlling operation of the powertrain in response to the driveline torque.03-29-2012
20110106385METHOD FOR ACTUATING A SHIFTING OPERATION IN AN AUTOMATIC TRANSMISSION OF A UTILITY VEHICLE - A method of controlling a shifting operation in an automatic transmission of a commercial vehicle. A targeted gear and an associated target rotational speed are determined, via a transmission control, depending on predetermined parameters, and the shifting operation is executed upon reaching a determined shifting rotational speed. A shift interlock is activated, at least temporarily, during a downshifting operation when, upon reaching the shifting rotational speed, the determined target rotational speed lies below a predetermined rotational speed limit.05-05-2011
20120221215IN-VEHICLE APPARATUS AND INFORMATION PROCESSING CENTER - A vehicle information processing unit 08-30-2012
20120130604AUTOMATIC SHUTDOWN SYSTEM FOR AUTOMOBILES - A vehicle status monitor and control system monitors a series of sensors installed within a vehicle to monitor specific functions to determine if a vehicle engine is running and there is a potential for toxic exhaust gases to accumulate, creating a toxic environment. The vehicle status monitor and control system determines if the vehicle is running and stationary over a predetermined period of time. The system additionally monitors the presence of a driver. If the predetermined conditions are met, the system terminates the operation of the vehicle's engine. The system can optionally include an override feature to ensure the engine continues running when desired.05-24-2012
20120166052Contacting Module for a Transmission Controller, Transmission Control Module, and Method for the Production Thereof - The invention relates to a contacting module for a transmission controller, comprising: a module housing (06-28-2012
20120166051METHOD FOR DETERMINATION OF GEARSHIFT POINTS - A method for determination of one or more downshift and upshift points for a gearbox in a motor vehicle. The vehicle includes an engine connected to the gearbox, where a downshift point represents a first engine speed at which the gearbox effects a downshift, and an upshift point represents a second engine speed at which the gearbox effects an upshift. One or more downshift and upshift points are determined relative to an engine target speed which is a desired speed for the engine. A system, a motor vehicle, a computer program and a computer program product thereof perform the method.06-28-2012
20120130607METHOD FOR EARLY DETECTION OF DAMAGE IN A MOTOR VEHICLE TRANSMISSION - A method of early recognition of damage in a motor vehicle transmission which comprises at least one acceleration sensor, with which mechanical vibrations in the motor vehicle transmission are detected and converted into an electrical signal. The electrical signal is then digitalized and thereafter carrying our a comparison with a comparison parameter. The mechanical vibrations are detected at defined operating points of the motor vehicle transmission and, from the digitalized electrical signal acceleration amplitudes, are determined over a time interval. A count is taken of conditions in which the acceleration amplitudes exceed the comparison parameter and, with reference to the number of such conditions, a calculated probability of damage in the motor vehicle transmission is determined. A motor vehicle transmission whose damage can be determined by the method, and a computer program product for carrying out the individual process steps are also proposed.05-24-2012
20120130605DEVICE FOR PREVENTING A MOTOR VEHICLE FROM BEING SET IN MOTION - A device for preventing a motor vehicle from being set in motion. The motor vehicle has a drive motor that can be connected to drive wheels in a driving connection by a drive train.05-24-2012
20120130603SYSTEM AND METHOD FOR CONTROLLING A TRANSMISSION OF A HUMAN-POWERED VEHICLE - This system creates a virtual image of the user's entire operating environment using a combination of hub speed, crank speed, inclination, and acceleration measurements. With this information, the system is able to understand the output torque and speed, and through control of the transmission, change the “gear ratio” to achieve a more desired operating condition based on the individual user's preferences. In addition, this system is designed to also work with a continuously variable transmission to avoid the shortfall of the state of the art systems, which can only get within a wide range of the optimal cadence because of the fixed ratios of a derailleur system.05-24-2012
20100332089METHOD OF CONTROLLING OPERATION OF A VEHICLE - A method of controlling a fluid level around a transmission gear of a vehicle includes the steps of providing a set of predetermined operating conditions, each predetermined operating condition having a corresponding predetermined fluid level requirement, operating the vehicle at an actual operating condition, determining a predetermined operating condition equivalent to the actual operating condition, and arranging the fluid level around the transmission gear to be equivalent to the predetermined fluid level requirement corresponding to the predetermined operating condition.12-30-2010
20100174457METHOD FOR CONTROLLING AND/OR REGULATING A STARTING OR MANEUVERING PROCESS IN AN AUTOMATIC TRANSMISSION - A method for controlling and/or regulating a staring or maneuvering process in an automated transmission of a vehicle in which a required starting torque is provided by a starting clutch and a required braking torque is provided by a brake device. The required braking torque, during the starting or maneuvering process, is provided at least in part by at least a transmission brake.07-08-2010
20100174456MECHANICAL CVT DRIVE TRAIN AND CONTROL METHOD FOR EARTH WORKING VEHICLE - An earth working vehicle which has an internal combustion engine and a driveline for establishing a driving relationship between the internal combustion engine and wheels of the earth working vehicle. The driveline includes a mechanical CVT. The earth working vehicle also has a control for manual operation by a driver of the earth working vehicle, the control operable by the driver to select among at least two modes of operation, namely a first mode of operation and a second mode of operation, the selection of the first mode of operation corresponding to a command to cause the vehicle to move forward, the selection of the second mode of operation corresponding to a command to cause the vehicle to move backwards. The earth moving vehicle also has an electronic controller. While the vehicle is in motion, the electronic controller is responsive to a change of a mode of operation made via the control and indicating a command to reverse a direction of travel of the vehicle, to issue a control signal to the mechanical CVT to cause the mechanical CVT to downshift.07-08-2010
20120173098METHOD FOR CONTROL OF A GEARBOX - A method for control of a gearbox, installed in a motor vehicle (07-05-2012
20120173096METHOD FOR CONTROL OF A GEARBOX - A method for control of a gearbox (07-05-2012
20120173095METHOD FOR DETERMINATION OF NUMBERS OF GEAR STEPS - A method for determining numbers of gear steps N for a gearbox in a motor vehicle. The vehicle has an engine connected to drive the gearbox. The numbers of gear steps N is the number of downshifts or the number of upshifts which the gearbox effects at an upshift point or a downshift point. A downshift point represents a first engine speed at which the gearbox effects a downshift. An upshift point represents a second engine speed at which the gearbox effects an upshift. The numbers of gear steps N are determined on the basis of a predicted acceleration a for the motor vehicle during a time period T. The invention relates also to a system, a motor vehicle, a computer program and a computer program product thereof for performing the method.07-05-2012
20120179340METHOD FOR DETERMINATION OF NUMBERS OF GEAR STEPS - A method for determination of numbers of gear steps N for a gearbox in a motor vehicle. The vehicle comprises an engine connected to drive, the gearbox. The numbers of gear steps N being the number of downshifts or the number of upshifts which the gearbox respectively effects at an upshift point or a downshift point, wherein a downshift point represents a first engine speed at which the gearbox effects a downshift, an upshift point represents a second engine speed at which the gearbox effects an upshift, and the numbers of gear steps N are determined on the basis of a predicted time period which the engine takes to change from a first engine speed ω07-12-2012
20120123651MODULE IN A VEHICLE CONTROL SYSTEM - A module for determining speed set-point values v05-17-2012
20100010715IMPROPER START PREVENTING APPARATUS FOR VEHICLE - If a control portion determines that the direction of travel of the vehicle with a range selected by the driver is different from the direction intended by the driver to move the vehicle, a vehicle inhibiting mechanism is activated to inhibit the movement of the vehicle. The activation of the vehicle inhibiting mechanism is based on a detection signal of the range selected by the driver from a range detecting portion, and a driver state detection signal from a driver state detecting portion.01-14-2010
20120253616METHOD AND SYSTEM FOR DRIVING OF A VEHICLE - A method for control of a vehicle's gearbox which is connected to a combustion engine and can be set to a number of different transmission ratios. When the vehicle is running in a low transmission ratio and at an engine speed below that at which the torque plateau for the low ratio is reached, in a situation where there is a reduced need for power output to propel the vehicle, determine a speed parameter for the vehicle, switch the gearbox to a higher transmission ratio than the low ratio when the speed parameter fulfils a first criterion.10-04-2012
20120221216SYSTEM AND METHOD FOR IN-VEHICLE OPERATOR TRAINING - An on-vehicle system for assessing an operator's efficiency of a vehicle, include sensors, an audiovisual display device, a processor and a data storage. The sensors measure or detect conditions of components of the vehicle, and convert the detected conditions into analog or digital information. The data storage stores program instructions, the analog or digital information from the sensors, and other data. The program instructions, when executed by the processor, control the on-vehicle system to determine a state of the vehicle within a vehicle's environment based on the analog or digital information from the sensors, determine whether one or more of a predetermined set of behaviors has occurred based on the determined state of a vehicle, assess performance of the determined one or more of the predetermined set of behaviors, and present the operator, via the audiovisual display device, a feedback based on the assessment.08-30-2012
20120226421Driver Identification System and Methods - A system for developing a digital signature identifying a specific person operating a vehicle uses a computerized appliance and software or firmware executing from a non-transitory medium on the computerized appliance and providing a first function collecting raw data regarding vehicle operation from sensors implemented in the vehicle during operation by the specific person, a second function analyzing the raw data and identifying at least one pattern of behavior associated with the specific person; and a third function developing a digital signature from the analyzed data for that specific person.09-06-2012
20090018731PERSONAL COMPUTER CONTROL FOR VEHICLES - A computer control system includes methods and devices for disabling an electronic device, such as a computer, when a mobility status of the vehicle changes. The mobility status may be measured with reference to the vehicle's transmission, parking brake, odometer, speedometer, throttle, engine rpm, or a geographic locating system such as a GPS system. When the mobility status of the vehicle changes to one in which the vehicle is moving, or is more likely to move, the control system disables the electronic device. The control system thus prevents drivers of automobiles and trucks from simultaneously driving while using the electronic device. The system may include one or more override keys and enabling hubs that allow a person to use the device in locations remote from the automobile. The system may also allow the device to be used when it is inside the vehicle but the vehicle's engine has been turned off. The software used by the system includes multiple security features adapted to prevent people from disabling the software such that they would be able to simultaneously drive and use the electronic device.01-15-2009
20110046859TRANSMISSION ACTUATOR DEVICE AND METHOD OF OPERATING THE TRANSMISSION ACTUATOR DEVICE - A transmission actuator device has a plurality of valves and a controller which is designed to actuate the plurality of valves. The transmission actuator devices includes an interface for a further controller which is primarily provided for actuating components other than the transmission actuator device, wherein at least a number of valves of the plurality of valves can be actuated by the further controller through of the interface.02-24-2011
20120330520METHOD FOR CONTROLLING A GEARBOX BRAKE - A method of controlling a transmission brake of an automated manual transmission of countershaft design provided with claw clutches where the transmission brake is functionally connected, on the input side, with a transmission shaft and which can be actuated hydraulically or pneumatically by inlet and outlet valves, each being a 2/2-way magnetic pulse valve. When upshifting under load to a target gear, after the gear under load is disengaged, to synchronize the target gear, the inlet and outlet valve are controlled in such manner that, at the end of the disengagement process, the input speed reaches a predetermined synchronous speed. The magnetic pulse valves are controlled such that the duration of the synchronization process is harmonized and its quality is improved and at least the outlet valve is opened, in a controlled manner, as a function of the rotational speed difference between the transmission input and output speeds.12-27-2012
20120330518SHIFTING DEVICE FOR VEHICLE AND SHIFTING SYSTEM USING THE SAME - A shifting device for a vehicle and a shifting system using the same are provided. The shifting device for a vehicle may be connected to a transmission of the vehicle via a cable to operate the transmission. More specifically, the shifting device may include an interface module which receives an input of a shift signal, and an actuator which is connected to one end of the cable, and operates the cable according to the shift signal inputted to the interface module to operate the transmission connected to the other end of the cable.12-27-2012
20120330519METHOD FOR CONTROLLING A TRANSMISSION BRAKE - A method of controlling a transmission brake that is actuated by inlet and outlet valves. For determining when to transmit a disengagement signal for opening the outlet valve, the current input and output speeds are determined and the respective gradients of these speeds are calculated. Variation of the input speed, during the disengagement of the brake, is determined as a function of the input gradient, the optimum time for reaching the synchronous speed, during brake disengagement, is determined from the input speed variation as a function of the output gradient, and the time interval until transmission of the disengagement signal is determined as a function of the current input and output speeds and their gradients, by a back-calculation from the time when the synchronous speed is reached, taking a disengagement dead time of the brake, between transmitting the disengagement signal and start of disengagement, into account.12-27-2012
20100174455FARADAY TYPE WIRELESS OXYGEN SENSOR - An oxygen sensor device and method for a motor vehicle having an electrode within an outer shell for measuring oxygen in exhaust gas exiting the vehicle. A communication device, powered by a capacitor, wirelessly transmits the measured amount of oxygen from the electrode to a powertrain control module. Vibration transmitting from the motor vehicle shakes a magnet, wound inside a coil, for generating the electrical current used by the capacitor.07-08-2010
20110238271SHIFT METHOD FOR A DUAL-CLUTCH TRANSMISSION FOR VEHICLES - A shift method is provided for a vehicle transmission. In the vehicle transmission, forward gears are operated using at least one engine clutch via at least one transmission drive shaft. A downshift from one of the forward gears to another of the forward gears, which are assigned to the at least one engine clutch or the at least one transmission drive shaft, is performed in that synchronizing clutches of the intermediate gears, which are between one of the forward gears and the other of the forward gears on the same transmission drive shaft, are successively operated.09-29-2011
20120277962SENSING AND DISPLAY OF GEAR RATIOS - The present application discloses an apparatus for determining and displaying gear ratios in a transmission system having a driving sprocket set, a driven sprocket set and a flexible drive member that engages the driving sprocket set and driven sprocket set, the apparatus comprising a display, a sensing module, the sensing module comprising a plurality of magneto-resistive assemblies, wherein at least one of the plurality of magneto-resistive assemblies is configured to detect adjustment of the transmission system, the sensing module configured to generate a signal responsive to said adjustment of the transmission system, and a data processor communicatively coupled with the display and with the sensing module, the data processor configured to receive the signal generated by the sensing module, process the signal to generate data relating to sprockets engaged by the flexible drive member, and write the data to the display.11-01-2012
20110251763METHOD FOR IDENTIFYING A DRIVING RESISTANCE OF A MOTOR VEHICLE - A method for identifying a driving resistance of a motor vehicle includes the steps of recording values of control and/or state variables of the vehicle during a driving state of the vehicle when a control route is covered, adapting parameters of a vehicle model and/or a model of the area surrounding the vehicle on the basis of the values of the recorded control and state variables, identifying the driving resistance on the basis of the adapted vehicle model and/or the surrounding area model, wherein the parameters of the vehicle model and/or the surrounding area model are adapted on the basis of a distinction between driving states, wherein these driving states include a driving state of a closed drive train with a positive driver demand torque, a driving state of a closed drive train without a positive driver demand torque, and/or and a driving state with an open drive train.10-13-2011
20120089306PRESSURE REGULATION METHOD FOR AN AUTOMATIC TRANSMISSION - A transmission control system for a vehicle includes a transmission control module (TCM), a solenoid valve, a pressure regulator valve, and a transmission element. The TCM includes a control algorithm providing output signals to valve drive electronics, where the valve drive electronics supply current to the solenoid valve. The solenoid valve controls an output pressure located in a passage between the pressure regulator valve and the transmission element. During an engine start-up condition of the vehicle, the control algorithm of the TCM includes control logic for activating a solenoid adjustment algorithm. The solenoid adjustment algorithm decreases the sensitivity of the valve drive electronics when supplying current to the solenoid valve. The solenoid adjustment algorithm is activated for a predetermined amount of time after engine start-up, and is then terminated. Alternatively, the solenoid adjustment algorithm is activated until a vehicle operating condition reaches a particular value, and is then terminated.04-12-2012
20110320094TRANSMISSION CONTROL METHOD - A method of operating a transmission device with a plurality of gears which can operate in an automatic shifting mode, during which a gear is selected automatically depending on the current driving situation, and also in a manual shifting mode during which a gear is selected depending on a driver's command. When the driver commands a shift, a change takes place from the automatic shifting mode to the manual shifting mode. A specific threshold value of the transmission output speed or an equivalent rotational speed value is associated with each gear and, when the driver commands a downshift, a target gear is determined as a function of the current transmission output speed or the equivalent rotational speed value. The gear selected as the target gear is the gear whose specific threshold value is higher than or equal to the current transmission output speed or the equivalent rotational speed value.12-29-2011
20110320093BICYCLE CONTROL SYSTEM - A bicycle control system includes at least one user input member, a value generating unit, a wireless transmitter and a wireless receiver. The value generating unit includes a memory component that at least temporarily stores a generated value. The value generating unit updates the generated value that was memorized in accordance with the at least one user input member was operated. The wireless transmitter periodically transmits control signals that are indicative of the generated value. The wireless receiver receives the control signals from the wireless transmitter.12-29-2011
20120101697NEGATIVE-TORQUE DOWNSHIFT EXECUTION FOR FIXED-GEAR TRANSMISSIONS - A method of executing a downshift in a fixed-gear powertrain having an input node and an output node related by a starting speed ratio before the downshift and a finishing speed ratio after is provided. The downshift includes a torque phase and an inertia phase. A starting output torque is calculated as a function of a starting driver request. An electric machine applies a starting regenerative input torque which is calculated as substantially equal to the starting output torque divided by the starting speed ratio. A finishing output torque is calculated as a function of a finishing driver request. The electric machine applies a finishing regenerative input torque which is calculated as substantially equal to the finishing output torque divided by the finishing speed ratio.04-26-2012
20100198467METHOD FOR CONTROLLING A FRICTION-TYPE CONTINUOUSLY VARIABLE TRANSMISSION AND A TRANSMISSION EQUIPED WITH MEANS FOR CARRYING OUT THE METHOD - A method for controlling a normal force exerted in a frictional contact of a friction type continuously variable transmission with a rotatable input shaft and a rotatable output shaft, includes the steps of: 08-05-2010
20130013160CONTINUOUSLY VARIABLE TRANSMISSION AND CONTROL METHOD THEREOF - The transmission controller changes the gear position of the subtransmission mechanism and varies the speed ratio of the variator in an opposite direction to a speed ratio variation direction of the subtransmission mechanism when the actual through speed ratio passes a predetermined mode switch line. When the improvement in the shift response of the continuously variable transmission is determined to be required and the actual through speed ratio passes the mode switch line from a Low side to the High side, the transmission controller increases a shift speed of the subtransmission mechanism compared with a normal coordinated shift.01-10-2013
20130024079SHIFT RANGE SWITCHING APPARATUS OF AUTOMATIC TRANSMISSION - Disclosed is a shift range switching apparatus of an automatic transmission which can improve the durability over the conventional shift range switching apparatus. An ECU is operative to rotate an actuator in a predetermined direction (Step S01-24-2013
20080234903Lubricating Oil Supply Control Device for Transmission of Vehicle - To configure a lubricating oil supply control device for a transmission, a device of a control system is configured simple and can be configured at a low cost by eliminating the necessity of addition of a new sensor and simplifying the arithmetic processing to be performed by a controller. To configure a lubricating oil supply control device for a transmission, a hydraulic device is configured simple and can be configured at a low cost by simplifying the structure of a valve body and the arrangement of hydraulic piping. The lubricating oil supply control device for a transmission of the present invention comprises an engine controller for controlling an engine; a transmission controller for controlling the transmission; a lubricating oil supplying oil passage for guiding lubricating oil, which is discharged from a lubricating oil pump, to the transmission; a bypass oil passage for guiding the lubricating oil, which is in the lubricating oil supplying oil passage, to a lubricating oil tank; a relief valve for discharging the lubricating oil, which is in the lubricating oil supplying oil passage, to the lubricating oil tank through the bypass oil passage and being operated in accordance with a control electric signal; a restrictor which is disposed in a part of an outlet of the relief valve; and a lubricating oil supply controlling controller to which control information of the engine controller and/or control information of the transmission controller are input and which generates and outputs the control electric signal for operating the relief valve in accordance with the control information.09-25-2008
20090299583METHOD AND APPARATUS FOR DETECTING AND COMPENSATING FOR PRESSURE TRANSDUCER ERRORS - A method and apparatus for detecting and compensating for pressure transducer errors includes a valve for regulating operation of a hydraulic device, a pressure transducer for detecting a pressure output from the valve, and a microprocessor comprising logic for computing a pressure measurement error of the pressure transducer. The pressure transducer is configured to output a pressure reading representing the detected pressure. The pressure measurement error may be computed using a first pressure reading from the pressure transducer taken at an operating condition in which the actual output pressure of the valve is substantially known, together with the substantially known actual output pressure of the valve.12-03-2009
20120253615VEHICLE CONTROL APPARATUS, VEHICLE CONTROL METHOD, COMPUTER PROGRAM FOR IMPLEMENTING SAME METHOD, AND DATA STORAGE MEDIUM STORING SAME COMPUTER PROGRAM - A vehicle control apparatus including a brake mechanism that produces braking force through actuation of a first actuator, a shift mechanism that changes the shift position of a transmission through actuation of a second actuator, a controller that controls the electric power supplied to the first actuator and the electric power supplied to the second actuator; a first electric power supply unit that supplies electric power to the controller; a second electric power supply unit that supplies electric power to the first actuator; and a third electric power supply unit that supplies electric power to the second actuator. An actuator control unit controls the electric power supplied to the second actuator from the second electric power supply unit or from the third electric power supply unit when the second actuator is not able to operate using electric power supplied from the first electric power supply unit.10-04-2012
20120253614CONTROL DEVICE FOR CONTROLLING DRIVE FORCE THAT OPERATES ON VEHICLE - A control device for controlling a front wheel drive force and a rear wheel drive force of a vehicle that includes a transmission comprises: a first controller for controlling a drive force of a main drive wheel and a drive force of an auxiliary drive wheel, the drive force of the main drive wheel being one of the front-wheel drive force and the rear-wheel drive force, and the drive force of the auxiliary drive wheel being another of the front-wheel drive force and the rear-wheel drive force; and a second controller for detecting whether a speed-change ratio of the transmission has changed. In a case that the second controller has detected that the speed-change ratio has changed, the first controller increases the drive force of the auxiliary drive wheel and reduces the drive force of the main drive wheel.10-04-2012
20130103273Self-Propelling Construction Machine - The invention relates to a self-propelling construction machine which has a chassis 04-25-2013
20130124056DRIVEN WHEEL TORQUE ESTIMATION SYSTEMS AND METHODS - A wheel position determination module determines first and second wheel positions based on first and second signals generated using first and second wheel speed sensors. The first and second wheel speed sensors generate the first and second signals based on rotation of driven wheels of the vehicle, respectively. The wheel position determination module determines third and fourth wheel positions based on third and fourth signals generated using third and fourth wheel speed sensors. The third and fourth wheel speed sensors generate the third and fourth signals based on rotation of other wheels of the vehicle, respectively. A first average determination module determines a first average of the first and second wheel positions. A second average determination module determines a second average of the third and fourth wheel positions. An estimation module selectively generates an estimate of torque at the driven wheels based on the first and second averages.05-16-2013
20130131938METHOD FOR REACHING A NEUTRAL POSITION OF A GEARSHIFT FORK IN A SHIFT TRANSMISSION - A method for reaching a neutral position N located between two end positions of a gearshift fork in a shift transmission in a motor vehicle from a starting position of the gearshift fork. The method allows finding the neutral position of the gearshift fork without a sensor determining the position of the gearshift fork or in the alternative in case such the sensor is defect.05-23-2013
20130131937Method Of Effecting Simultaneous Displacement Changes In Hydrostatic Drive Machine - A method is provided for controlling a gear ratio change in a hydrostatic drive machine. The hydrostatic drive machine includes a variable displacement pump and at least one variable displacement motor fluidly connected with the variable displacement pump. The method includes a step of determining a gear ratio rate of change corresponding to a change from a current gear ratio to a new gear ratio. Start and stop overlap gear ratios corresponding to the gear ratio rate are determined and define an overlap range. The current gear ratio is changed to the new gear ratio using electronic signals at least in part by simultaneously changing displacements of the variable displacement pump and the at least one variable displacement motor at gear ratios within the overlap range, and sequentially changing displacements of the variable displacement pump and the at least one variable displacement motor at gear ratios outside the overlap range.05-23-2013
20110218717METHOD FOR START-UP AND COMPUTER PROGRAM PRODUCT AND APPARATUS - The resetting of a gear motor compensating parameter ensures that a start-up of a gearbox functions reliably in the vent that components are replaced.09-08-2011
20110218715Drive train control arrangement - In a drive train control arrangement for a motor vehicle drive train, which comprises at least one main drive train, a first drive axle driven permanently by means of the main drive train, at least one auxiliary drive train and a second drive axle coupleable to the main drive train via the auxiliary drive train, which has a first clutch unit and at least a second clutch unit connected downstream in the power train of the first clutch unit for connecting the second drive axle to the main drive train, and a control unit, which in at least one operating mode 09-08-2011
20080201046Method for operating an automotive drive - In an automotive drive, at least one dynamic characteristic of a bearing by which the automotive drive is supported on a beam is selectively influenced during operation of the automotive drive (active bearing). It is provided that a change in an instantaneous operating variable of the automotive drive is determined from a change in a state variable of the active bearing that influences its dynamic characteristic.08-21-2008
20100286876POWER SPLIT DEVICE AND METHOD - A variable power split device having radially inner and outer races, each comprising at least two axially spaced parts. A plurality of planetary members are arranged for rolling contact between the races and a planet follower carrier engages the planetary members. A first rotatable power element spindle connects with the planet follower to couple power between the planet follower carrier and a first power element. A second rotatable power element spindle connects with the inner race to couple power between the inner race and a second power element. A third rotatable power element spindle connects with the outer race to couple power between the outer race and a third power element. Means for adjusting axial separation adjust separation of the axially spaced parts of at least one of the races to vary a power split ratio between the first, second and third rotatable power element spindles.11-11-2010
20130151088METHOD AND SYSTEM FOR VEHICLE DATA COLLECTION REGARDING TRAFFIC - The present disclosure describes roadway map updating using vehicle performance, route, and/or location information from plural vehicles.06-13-2013
20120259520METHOD FOR DETERMINATION OF MOTIVE FORCE CAPACITY OF A MOTOR VEHICLE - A method for determination of a first parameter R10-11-2012
20130184945RAPID SYNCHRONIZER TOUCH POINT ADJUSTMENT - A method of adapting transmission controls to locate synchronizer touch points in an automated layshaft transmission. This method may include actuating a motor to move a shift drum along a layshaft at an essentially constant speed; measuring a feedback current as the motor moves the shift drum; detecting a first spike in feedback current adjacent to a second spike in feedback current for a gear; determining a shift drum angle for the first spike; and adjusting a transmission controller to set a synchronizer touch point at a shift drum angle adjacent to the first feedback current spike for the gear.07-18-2013
20130184946DUAL CLUTCH TRANSMISSION - A transmission for a motor vehicle with an engine includes a transmission housing and a dual clutch assembly with a clutch housing connectable to an engine output member. The clutch housing is rotationally supported within the transmission housing. The selective engagement of the dual clutch assembly interconnects the dual clutch housing with at least one of a first input member and a second input member. The transmission also includes a plurality of gear sets associated with various forward and reverse gear ratios, a controller implemented with an algorithm that provides a lock-up profile for the dual clutch assembly, and a plurality of synchronizer assemblies that couple at least one of the gear sets with at least one of a first countershaft and a second countershaft. The selective engagement of at least one of the synchronizer assemblies establishes at least one of the forward speed ratios.07-18-2013
20110313627VEHICLE CONTROL UNIT AND VEHICLE EQUIPPED WITH THE SAME - A vehicle control unit and a vehicle equipped with the vehicle control unit are provided, the vehicle control unit being capable of preventing a shift change from being permitted in a direction opposite to a vehicle traveling direction caused by an erroneous operation of a shift lever during a traveling mode. In the vehicle control unit for controlling the vehicle on the basis of a shift range detecting unit configured to detect a shift range selected by a shift operation and a vehicle speed detecting unit configured to detect a vehicle speed, when the shift range detecting unit detects the shift range in a direction opposite to the vehicle traveling direction in a state where the vehicle speed detecting unit detects a vehicle speed not less than a first speed V12-22-2011
20120095656SYSTEM AND METHOD FOR DETERMINING VEHICLE SHIFTER POSITION - A system for controlling a transmission of a vehicle based on input from a shifter includes first, second, third, and fourth position sensors and a position determination module. The shifter includes a shift lever. The first and second position sensors sense first and second positions of the shift lever, respectively, with respect to first and second axes, respectively, wherein the first and second axes are orthogonal to one another. The third and fourth position sensors sense third and fourth positions of the shift lever, respectively, with respect to third and fourth axes, respectively, wherein the third and fourth axes are orthogonal to one another. In addition, the first and second axes are non-orthogonal to the third and fourth axes. The position determination module determines a position of the shift lever based on the first, second, third, and fourth positions.04-19-2012

Patent applications in class Transmission control

Patent applications in all subclasses Transmission control