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Electric engine

Subclass of:

477 - Interrelated power delivery controls, including engine control

477002000 - PLURAL ENGINES

Patent class list (only not empty are listed)

Deeper subclasses:

Class / Patent application numberDescriptionNumber of patent applications / Date published
477005000 With clutch control 220
477004000 With brake control 23
Entries
DocumentTitleDate
20090082170METHOD AND CONTROL ARCHITECTURE FOR OPTIMIZATION OF CYLINDER DEACTIVATION SELECTION AND ENGINE INPUT TORQUE FOR A HYBRID 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 a plurality of engine states the engine states comprising an all-cylinder operation and a cylinder-deactivation operation. Costs are determined for operating the engine and hybrid transmission in the engine states to substantially meet an operator torque request. The engine state is controlled to one of the all-cylinder operation and the cylinder-deactivation operation based upon the costs.03-26-2009
20090192013Hybrid Vehicle - An object of the present invention is to provide a hybrid vehicle having a simple system configuration.07-30-2009
20100081540COMBINED POWER TRANSMISSION AND DRIVE UNIT FOR APPLICATION IN HYBRID SYSTEMS AND A HYBRID SYSTEM - A combined power transmission and drive unit (04-01-2010
20100041512Preventing Gear Shift Cycling of a Hybrid Electric Vehicle - In a powertrain for a motor vehicle that includes a power source, a transmission driveably connected to the power source and wheels of the vehicle, an electric machine able to operate as an electric motor for transmitting power to at least some of the vehicle wheels, a method for controlling the powertrain includes operating the power source and the transmission in a desired gear to produce a first wheel torque in response to a demanded wheel torque, increasing the demanded wheel torque while turning the vehicle along a curved path, and using the electric motor to provide a second wheel torque, such that a combined magnitude of the first wheel torque produced in the desired gear and the second wheel torque is equal to or greater than the increased demanded wheel torque.02-18-2010
20100041511CONTROL DEVICE OF VEHICLE-USE DRIVE DEVICE - A transmission mechanism including a switching clutch or brake is switchable between a continuously-variable shifting state and a step-variable shifting state, and provides improved fuel economy by a transmission with an electrically variable speed ratio and high power transmitting efficiency by a gear type power transmitting device constructed for mechanical transmission of power. During four-wheel drive vehicle running with second drive wheels driven by a third electric motor, a switching control switches a differential portion to a continuously-variable shifting state, so that an operating speed of a first electric motor operated by an output of an engine as an electric generator is controlled to assure a higher degree of electricity generating efficiency, owing to the differential function of the differential portion, than when the differential portion is placed in a non-continuously-variable shifting state in which first electric motor speed and engine speed are determined by vehicle running speed.02-18-2010
20100105517TRANSMISSION DEVICE AND METHOD FOR OPERATING A TRANSMISSION DEVICE - A transmission device with at least two multi-gear transmission groups. Torque is introduced via a input shaft into the transmission groups and into the other transmission group via a main shaft. The input shaft is directly connected with the main shaft via a shifting element during a gearshift to achieve an intermediate gear. When the intermediate gear is engaged, torque passes to the shafts connected to each other via the shifting element. A method for operating transmission, during the gearshift, includes introducing torque from the electric machine to the shafts connected via the shifting element and adjusting the rotational speed of the input shaft to the rotational speed of the target gear. A further shifting element is engaged in the first transmission group, the shifting element is disengaged, and torque of the electric machine is reduced, once the rotational speeds of the input shaft and the target gear match one another.04-29-2010
20130045832SYSTEM AND METHOD OF CONTROLLING CRANKSHAFT TORQUE DURING A TRANSMISSION SHIFT WITH TORQUE CAPACITY-BASED TORQUE REDUCTION RANGE SELECTION - A control system for use with an engine and a transmission in a vehicle is provided that includes at least one controller having a processor with at least one stored algorithm that determines different crankshaft torque capacities associated with different respective torque actuators including a relatively slow torque actuator, such as an airflow actuator, and at least one relatively fast torque actuator, such as a spark actuator or a fuel actuator. The algorithm determines a torque actuation range over which to modify engine torque during an oncoming shift of the transmission. The torque actuation range may be based at least partially on a target gear of the upshift, desired shift duration, and a vehicle operating condition indicative of an operator intent regarding shift duration. Requests for torque modification by use of the torque actuators are then made to provide the torque actuation range.02-21-2013
20090305842Method for Simplifying Torque Monitoring, in Particular for Hybrid Drives - In a method for controlling a vehicle drive unit having at least two individual drives and a vehicle control unit, a continuous torque comparison between a permissible torque M12-10-2009
20090118075METHOD FOR PREFERENTIAL SELECTION OF MODES AND GEAR WITH INERTIA EFFECTS FOR A HYBRID POWERTRAIN SYSTEM - A method for controlling a hybrid powertrain system selectively operative in one of a plurality of operating range states including an engine includes monitoring an operator torque request and a rotational speed of the output member, determining inertial effects of the transmissions, determining motor torque outputs from the electrical machines and an engine based upon the inertial effects, and selecting a preferred operating range state and a preferred input speed from the engine to the transmission based upon the operator torque request and the inertial effects.05-07-2009
20120309584POWER TRANSMISSION UNIT - After an engine starts, a rotation speed of the engine is fed back to a target rotation speed that is defined in response to requested power for the engine. In addition, by operating a gear ratio of a CVT, a rotation speed of an output side of a one-way bearing is fed back to the target rotation speed.12-06-2012
20090270221ELECTRO-HYDRAULIC MACHINE FOR HYBRID DRIVE SYSTEM - A combined hybrid drive system and electro-hydraulic machine includes a hybrid drive system that is adapted to decelerate a rotatably driven mechanism, accumulate the energy resulting from such deceleration, and use the accumulated energy to subsequently accelerate the rotatably driven mechanism. An electro-hydraulic machine is operatively connected to the hybrid drive system and is adapted to be operated in one or more of a plurality of modes to improve the performance of the hybrid drive system.10-29-2009
20120225750TURBINE DRIVE-TRAIN APPARATUS - An apparatus configured to increase the operational range of a turbine is disclosed. In one embodiment, an apparatus includes: a turbine coupled to a driveshaft; a drive-train coupled to the driveshaft; a first torque convertor coupled to the drive-train, the first torque convertor being configured to deliver an operational torque to the drive-train; a second torque convertor coupled to the first torque convertor, the second torque convertor being configured to deliver a torque to the first torque convertor; a first motor coupled to the second torque convertor, the first motor being configured to deliver a power input to the second torque convertor; and a control system operably connected to at least one of the first torque convertor and the second torque convertor, the control system configured to monitor and adjust a speed of the drive-train by controlling at least one of the operational torque provided by the first torque converter and the torque provided by the second torque converter.09-06-2012
20110021311MOTOR-ASSIST SHIFT CONTROL IN A HYBRID VEHICLE TRANSMISSION - A method for operating a motor vehicle hybrid powertrain having an engine, a motor-generator and a multi-speed automatically-shiftable transmission, wherein the engine and the motor-generator operate to supply torque to the transmission for driving a vehicle. The method includes modulating the torque supply from the motor-generator to the transmission during a gear shift to minimize a transmission output torque disturbance.01-27-2011
20110021310System for Managing Torque in a Vehicle Driveline Coupled to an Internal Combustion Engine and an Electric Motor - A system is provided for managing torque in a vehicle driveline coupled to an internal combustion engine and to a hybrid motor/generator. An engine control circuit provides to a transmission control circuit an engine torque value corresponding to torque applied by the engine to the driveline. A hybrid control circuit provides to the transmission control circuit a motor torque value corresponding to torque applied by the hybrid motor/generator to the driveline. The transmission control circuit controls operation of at least one friction device and controls shifting of the transmission, and also manages torque applied to the drive line by the engine and by the hybrid motor/generator based on the engine torque value and the motor torque value such that the friction device control and shift schedule instructions do not require modification to accommodate inclusion of the hybrid motor/generator in the system or exclusion of the hybrid motor/generator from the system.01-27-2011
20090233759WORK MACHINE WITH AUXILIARY POWER UNIT AND INTELLIGENT POWER MANAGEMENT - A work machine includes a primary power unit having a rated primary output. The primary power unit is couplable with at least one primary load, including a propulsion load. An auxiliary power unit is mechanically independent from the primary power unit, and has a rated auxiliary output which is smaller than the primary output. The auxiliary power unit is couplable with at least one external load, including an operator initiated load. At least one electrical processing circuit is configured for selectively coupling the primary power unit with one or more primary loads, and for selectively coupling the auxiliary power unit with one or more external loads.09-17-2009
20090011895Controller of Driver for Vehicles - A control apparatus for a vehicular drive system including (a) a differential portion having a differential mechanism operable to distribute an output of an engine to a first electric motor and a power transmitting member, a second electric motor disposed in a power transmitting path between the power transmitting member and a vehicle drive wheel, and a switching clutch and a switching brake provided in the differential mechanism and operable to limit a differential function of the differential portion, and (b) a step-variable automatic transmission portion constituting a part of the power transmitting path and operable to perform a clutch-to-clutch shifting action by a releasing action of a coupling device and an engaging action of another coupling device, the control apparatus including a step-variable shifting control configured to change an amount of racing of an input speed of the automatic transmission portion during the clutch-to-clutch shifting action, depending upon whether the differential function of the differential portion is limited by the switching clutch and brake.01-08-2009
20130165293VEHICLE DRIVE SYSTEM - According to one embodiment, a vehicle drive system includes a left-wheel drive unit having a first motor and a first transmission and a right-wheel drive unit having a second motor and a second transmission. When a left and right opposite torque control in which a first motor and a second motor produce torque in opposite directions is executed by controlling one motor of the first motor and the second motor to produce forward torque or backward torque and the other motor to produce backward torque or forward torque that is opposite to the torque produced by the one motor, the motor control unit controls the one motor based on a target revolution state quantity of the one motor, while the motor control unit controls the other motor based on a target torque state quantity of the other motor.06-27-2013
20100234169VEHICULAR POWER TRANSMISSION CONTROL APPARATUS - An apparatus comprises a changeover mechanism which is able to change a connection state of an electric motor output shaft to any one from alternatives consisting of “an IN-Connection State” in which a power transmission path is provided between a transmission input shaft and the electric motor output shaft, “an OUT-Connection State” in which a power transmission path is provided between the transmission output shaft and the electric motor output shaft, and “a neutral connection state” in which no transmission path therebetween is provided. The changeover is carried out based on a combination (area) of a vehicle speed V and a required driving torque T. As for the changeover, an (first, second) IN-connection area is more enlarged and the OUT-Connection area and the neutral connection area are more narrowed, as a temperature of a lubricating oil is lower.09-16-2010
20110287888MULTI-AXLE HYBRID DRIVE SYSTEM FOR A VEHICLE - A multi-axle hybrid drive system for a vehicle which comprises a first unit (11-24-2011
20100210409HYBRID DRIVE TRAIN - A hybrid powertrain of a motor vehicle, especially of a mobile machine having an internal combustion engine and an electric motor, the powertrain also having a hydraulic machine.08-19-2010
20100279816Transmission Engagement Control During an Engine Restart of a Hybrid Electric Vehicle - A method for controlling transmission engagement during restart of an engine in a hybrid electric powertrain includes moving a gear lever between a forward position and reverse position, using electric power to drive an auxiliary pump whose output causes a transmission to engage a gear that corresponds to the lever position and to stroke, to zero torque capacity, an oncoming clutch that corresponds to said gear, initiating the restart, and discontinuing use of the auxiliary pump.11-04-2010
20100120580MULTI-MODE HYBRID TRANSMISSION - A multi-mode hybrid transmission for transmitting power from a prime mover and a stored source of energy to a final drive shaft. The transmission may include an input shaft to receive torque from the prime mover, a countershaft operatively coupled to the final drive shaft, a plurality of gear pairs each defining a torque path from the input shaft to the countershaft, a synchromesh clutch assembly to selectively couple the input shaft with a desired gear pair, and first and second electric machines rotatably carried by the input shaft. The first electric machine can provide a motive force to the final drive shaft and the second electric machine can covert rotary speed of the input shaft into electrical energy. Additionally, the first and second electric machines can provide supplemental torque to the output shaft during periods of reduced torque from the prime mover associated with a change in torque path.05-13-2010
20100120579In-vehicle power transmission device and driving system for vehicle - An in-vehicle power transmission apparatus is equipped with a plurality of power split rotors and a power transmission control mechanism. The power split rotors work to split power among a rotary electric machine such as a motor-generator, an internal combustion engine, and a driven wheel of the vehicle. If rotational energy, as outputted from the power split rotors, is defined as being positive in sign, the power split rotors are so assembled that when the power transmission control mechanism establishes transmission of the rotational energy that is positive in sign as the power from a first rotor that is one of the power split rotors to the internal combustion engine, the other power split rotors are so linked as to provide output rotational energies which are opposite in sign to each other. This enables the speed of the first rotor to be placed at substantially zero.05-13-2010
20080312029Control apparatus for vehicular power transmitting system - A control apparatus for a vehicular power transmitting system including (a) an electrically controlled differential portion which has a differential mechanism and a first electric motor connected to a rotary element of the differential mechanism and which is operable to control a differential state between rotating speeds of its input and output shafts by controlling an operating state of the first electric motor, and (b) a step-variable transmission portion which constitutes a part of a power transmitting path between the electrically controlled differential portion and a drive wheel of a vehicle, the control apparatus including a coasting-shift-down control portion configured to implement a coasting shift-down action of the step-variable transmission portion during a coasting run of the vehicle, only when a parameter correlating with a shaft torque of the step-variable transmission portion during the coasting run is held within a predetermined range.12-18-2008
20100125019CONTROL DEVICE FOR VEHICULAR POWER TRANSMITTING APPARATUS - In a vehicular power transmitting apparatus provided with an electrically-controlled differential portion in which controlling an operating state of an electric motor controls a differential state of a differential mechanism, a control device for starting up a drive force source in an appropriate mode depending on a vehicle condition can be provided. The control device includes drive-force source start control means 05-20-2010
20090280950VEHICLE DRIVE FORCE CONTROL APPARATUS - A vehicle drive force control apparatus for controlling a drive force of a vehicle including: a main drive power source for driving main drive wheels through a coupling device and a transmission, an electric generator operated by a drive force generated by the main drive power source, and an electric motor which is driven by electric power generated by the electric generator, to generate a drive torque that can be transmitted to auxiliary drive wheels. The vehicle drive force control apparatus controls the coupling device and transmission to reduce an engaging force of the coupling device and shift up the transmission during driving of the auxiliary drive wheels, so that the operating speed of the main drive power source is raised according to a load of the coupling device, while the electric power generated by the electric generator is increased, permitting an increase of the drive torque of the auxiliary drive wheels and stable 4-wheel-drive control.11-12-2009
201002488918-SPEED HYBRID TRANSMISSION - The hybrid transmission has a plurality of members that can be utilized in powertrains to provide eight forward speed ratios and one reverse speed ratio. The hybrid transmission includes a motor/generator, three planetary gear sets, five torque-transmitting devices, one fixed interconnection, three external gear sets and a final drive gear set. The powertrain includes an engine and torque converter that is continuously connected to one of the planetary gear members and an output member that is continuously connected with one of the external gear sets. The five torque-transmitting devices provide interconnections between various planetary and external gear members, the input shaft, and the transmission housing, and are operated in combinations of three to establish eight forward speed ratios and one reverse speed ratio.09-30-2010
20100137097METHOD OF CONTROLLING HYBRID VEHICLE - A method of controlling a hybrid vehicle including an automatic transmission and a motor generator comprises a pre-gearshift control, a mid-gearshift control, and a post-gearshift control. It is possible to prevent abnormal operations and damage of an automatic transmission due to reverse rotation of the input shaft of the automatic transmission and achieve smooth and stable pre-stop gearshift, by appropriately controlling reverse torque exerted in the input shaft of the automatic transmission, when a vehicle equipped with a hybrid driving apparatus including the automatic transmission performs the pre-stop gearshift.06-03-2010
20100137098VEHICLE DRIVE SYSTEM - In a drive system of a vehicle, the drive power of an engine is divided by a planetary gear set to drive two power transfer shafts. One of the two shafts includes a continuously variable transmission unit and a clutch. The output sides of the two shafts are coupled to a common power output shaft, which is coupled to an AC motor. In a power transfer condition of the clutch, the vehicle is driven with only the output drive power of the engine or both drive powers of the engine and the AC motor. In a power interruption condition of the clutch, the vehicle is driven with only the drive power of the AC motor. The kinetic energy generated at deceleration of the vehicle is converted into electric energy by the AC motor thereby to perform regenerative braking.06-03-2010
20080293538HYBRID VEHICLE DRIVE CONTROL APPARATUS AND METHOD - A hybrid vehicle drive control apparatus and method for a vehicle including an engine and a motor-generator are taught herein. When a drive mode requested by a driver is a power mode that attaches greater importance to an acceleration performance than to fuel consumption efficiency, a power mode engine torque that is larger than an optimum fuel consumption efficiency engine torque is used as a target engine torque of the engine.11-27-2008
20080305921Method For Operating a Hybrid Vehicle Drive and a Device For Carrying Out Said Method - The invention relates to a method for operating a motor vehicle drive comprising at least one internal combusting engine (12-11-2008
20080305923Control device for hybrid vehicle drive apparatus - A control device for hybrid vehicle drive apparatus is disclosed which executes an internal-combustion-engine rotation control for rotating an engine output shaft (12-11-2008
20080305922HYBRID DRIVE SYSTEM FOR A VEHICLE AND METHOD OF OPERATING THE HYBRID DRIVE SYSTEM - A hybrid drive system is provided for a vehicle. The hybrid drive system includes, but is not limited to a traction battery, an internal combustion engine and an electric drive. The internal combustion engine and the electric drive provide propulsion drives and are configured to be operatively and selectively coupled to a transmission. The internal combustion engine includes, but is not limited to a heater for pre-heating a selected portion of the internal combustion engine. The traction battery is coupled to the heater and configured so as to be able to provide electric power to the heater whilst the propulsion drives are switched off.12-11-2008
20080227589Method for Controlling an Overrun Condition of a Hybrid Vehicle and Hybrid Vehicle - A method is for controlling an overrun condition in a hybrid vehicle having a combustion engine and additionally at least one electric motor as well as an overrun fuel cutoff, which interrupts a fuel supply to the combustion engine when the vehicle is in an overrun condition and restores the fuel supply when the combustion engine reaches or falls below a restoring speed. At least in a combustion engine at operating temperature, the fuel supply is restored at a restoring speed of at most 200 min09-18-2008
20080234096Hybrid Utility Vehicle - A serial hybrid drive system for off-road utility vehicles and/or riding tractors including one or more electric motors (09-25-2008
20080234097CLUTCH CONTROL FOR HYBRID TRANSMISSION - A method and system to off-load motive torque from a clutch to execute a transmission shift is provided. The powertrain includes torque-generative devices operably connected to a two-mode, compound-split, hybrid electro-mechanical transmission. The method includes determining a commanded output torque, and a shift command. A first torque is transmitted by electrical motors, and is limited by their torque capacities. A supplemental motive torque is transmitted from an oncoming clutch. The supplemental motive torque is limited by a torque capacity of the oncoming clutch. Output torque of an internal combustion engine to the transmission is adjusted by an amount substantially equal to a difference between the commanded output torque and the first and the supplemental motive torques.09-25-2008
20080269009System for controlling a hybrid energy system - A method and apparatus are disclosed for controlling a hybrid energy system including a method of storing energy within a hybrid energy system. The hybrid energy system includes a traction load and a first energy consuming system configured to maintain a first criteria within a first operating range. The method includes receiving energy into the hybrid energy system from the traction load and distributing a first energy to the first energy consuming system when the first criteria is within the first operating range.10-30-2008
20090264249METHOD FOR OPERATING A DRIVETRAIN - A method of operating a motor vehicle drivetrain having, along a power flow, an internal combustion engine, a clutch, an electric motor, a transmission and a drive output. The transmission is associated with a main and auxiliary hydraulic pumps, and an internal or an external starting element. When the engine is at rest and the clutch and starting element are both disengaged, to start with the electric motor, with the brake pedal actuated, the auxiliary hydraulic pump is operated at a first power level to supply the transmission with pressure for maintaining a defined gear. Then, upon recognizing a desire to start, the auxiliary hydraulic pump is changed from a first to a second power level to supply pressure to the transmission to produce starting torque and, only after lapse of a time interval, is the speed of the motor increased to produce the desired starting power or torque.10-22-2009
20090264248Power Development for Rapid Start in Full-Hybrid Drives with Optimized Traction Control - A launch control system for a hybrid vehicle is described. The system includes overcharging an electrical energy storage unit of the hybrid vehicle, operating an internal combustion engine at an increased power level, and operating an electric motor at an increased power level with the overcharged electrical energy storage unit. The transmission during the launch is configured to connect the electric motor and the internal combustion engine to a drivetrain of the hybrid vehicle, and to selectively slip friction clutches to store energy and release it for the launch.10-22-2009
20120196721Powertrain and Method for a Kinetic Hybrid Vehicle - A kinetic hybrid device and method for a vehicle may include a planetary gear system configured as a continuously variable transmission comprised of three or four ports. The kinetic hybrid device and method may include a flywheel connected to a first port of the system, a final drive connected to a second port of the system, and the variator for the flywheel connected to a third or fourth port of the system. The prime mover and/or other power sources may share a port with the flywheel, but do not share a port with the final drive.08-02-2012
20090163317Power Output Apparatus, Vehicle Provided With the Same, and Method of Controlling the Same - In a vehicle having a planetary gear mechanism to which an engine, a first motor, a drive shaft and a second motor are connected, while the engine is stopped, an increase rate (ΔTr) by which required torque (Tr*), which is the torque required to be output to a drive shaft, is allowed to increase, is set based on an output limit (Wout) of a battery and an actual torque (T*) is set with the required torque (Tr*) limited by the set increase rate (ΔTr) (S06-25-2009
20090005214METHOD FOR REDUCING TORQUE REQUIRED TO CRANK ENGINE IN HYBRID VEHICLE - A method of operating a hybrid powertrain system is provided for a vehicle that includes an internal combustion engine having an engine output to drive the vehicle and a motor having a motor output to drive the vehicle. The motor is operatively connected to the engine and operable to crank the engine. The method includes the steps of reducing compression in at least one engine cylinder and operating the motor to crank the engine. A hybrid powertrain system for a hybrid vehicle is also provided.01-01-2009
20090186741Hybrid engine system with transient load assistance - A power train is provided having a power source for generating a power output. The power train also has a power storage device for storing and distributing power. The power train further has a controller configured to cause the distribution of power from the power storage device for assisting the power source when the rate of fuel entering the power source is above a threshold fuel rate. The threshold fuel rate is a fuel rate at which, assisting the power source increases the efficiency of the power train.07-23-2009
20090325756MULTI-STROKE HYBRID PROPULSION SYSTEM - A hybrid propulsion system for a vehicle and method of operation are described. The hybrid propulsion system includes an internal combustion engine that may be operated in a multi-stroke mode, whereby the engine may be selectively operated in one of a two stroke cycle and a four stroke cycle depending on operating conditions. As one example, the two stroke cycle may be utilized to provide increased engine torque when a recharging operation of the on-board energy storage device is requested. In some examples, a transition from the four stroke cycle to the two stroke cycle may be performed while maintaining the transmission in the previously selected gear ratio in response to a requested increase in charging or a requested increase in wheel torque as requested by the vehicle operator.12-31-2009
20090105037METHOD AND SYSTEM FOR CONTROLLING A PROPULSION SYSTEM OF AN ALTERNATIVELY POWERED VEHICLE - Inverters of a hybrid electric vehicle are cooled by a coolant. Expected temperature differences between the inverters and the coolant are determined based on vehicle parameters. Actual temperature differences between the inverters and the coolant are compared to the expected temperature differences. A maximum output torque is reduced if the actual temperature differences exceed the expected temperature differences.04-23-2009
20090203495Power Output Apparatus, Control Method Thereof, Vehicle Equipped with Power Output Apparatus, and Driving System - When a vehicle speed V is out of a non-rotational synchronizing range, V≦Vref08-13-2009
20090118081METHOD FOR CONTROLLING POWER ACTUATORS IN A HYBRID POWERTRAIN SYSTEM - A method for controlling a powertrain system includes controlling a first power actuator based upon a set of power constraints for the first power actuator. The method further includes controlling a second power actuator based upon the set of power constraints for the second power actuator.05-07-2009
20090118080METHOD FOR MANAGING ELECTRIC POWER WITHIN A POWERTRAIN SYSTEM - A method for controlling a powertrain system includes monitoring output power of the energy storage device, modifying a preferred electric power limit when the output power of the energy storage device transgresses a trigger power limit, and determining the power constraint of the first power actuator based on the estimated output power of the energy storage device when the output power of the energy storage power transgresses the preferred power limit.05-07-2009
20090118078METHOD AND APPARATUS FOR CONTROLLING A HYBRID POWERTRAIN SYSTEM - A control method for vehicular hybrid powertrain system includes monitoring operator inputs to an accelerator pedal and a transmission gear selector, and determining an operator torque request based upon the operator inputs to the accelerator pedal and the transmission gear selector. Torque output from the electric machine is commanded based upon the operator torque request. Engine output is controlled based upon the operator torque request and the commanded torque output from the electric machine. Vehicle hood position is monitored and the engine output is controlled correlative to the operator input to the accelerator pedal when the monitored position of the vehicle hood is open and the operator input to the transmission gear selector is one of a PARK and a NEUTRAL position.05-07-2009
20090203496Creep control for motor system - A control system is disclosed. The control system may have an electric motor and a traction device connected to an output of the motor. The control system may also have a decelerator and a controller. The controller may be in communication with the motor and the decelerator. The controller may be configured to determine a creep torque and apply the creep torque to the traction device when the decelerator is actuated.08-13-2009
20090239703HYBRID POWERTRAIN AND A METHOD FOR CONTROLLING A HYBRID POWERTRAIN - A hybrid powertrain includes a combustion engine operable to output rotational power thereat, an electric machine arrangement operable to output rotational power thereat, a gearbox arrangement for receiving rotational power from at least one of the combustion engine and the electric machine arrangement and being operable to couple motive power to a load coupled to the gearbox arrangement. The gearbox arrangement is operable to provide a plurality of gearing ratios. The electric machine arrangement is employable to extend a rotation rate range provided in a given gearing ratio: at higher rotation rates prior to a gear change from said given gearing ratio to a gearing ratio subsequent thereto; or at both lower rotation rates when accelerating from a standstill or from a preceding gear, and at higher rotation rates prior to a gear change from said given gearing ratio to a gearing ratio subsequent thereto.09-24-2009
20100056325AUTOMATIC THROTTLE RESPONSE FOR A HYBRID VEHICLE - The present disclosure provides a method for controlling a hybrid vehicle having an engine, an electric motor, an energy storage device having a state of charge, and a throttle. The method improves fuel economy of the hybrid vehicle by determining the state of charge of the energy storage device and setting a throttle depression level for engaging the engine based on the state of charge of the energy storage device. The present disclosure further provides a hybrid vehicle having an engine, an electric motor, an energy storage device having a state of charge, and a throttle. The hybrid vehicle includes a controlling component for determining the state of charge of the energy storage device and setting a throttle depression level for engaging the engine based on the state of charge of the energy storage device.03-04-2010
20090048064DRIVE SYSTEM FOR ELECTRICALLY DRIVEN DUMP TRUCK - A drive system of an electrically driven dump truck is capable of achieving an operational feeling in which the operation amount of the accelerator pedal is well balanced with the output horsepower of the electric motors, particularly at the time of slow traveling. To achieve this, the target motor output horsepower Pm02-19-2009
20090048063Rollback control of a hybrid electric vehicle - In a powertrain that includes an engine driveably connected to a load and an electric machine driveably connected to the load, a method for controlling a vehicle located on an incline against rollback includes determining a magnitude of wheel torque required to prevent the vehicle from rolling back, determining whether the electric machine has a current torque capacity that is equal to or greater than the required wheel torque, using the electric machine to produce the required wheel torque provided the current torque capacity of the electric machine is able to produce the required wheel torque, and using the engine to produce the required wheel torque provided the torque capacity of the electric machine is unable to produce the required wheel torque.02-19-2009
20100151988CONTROLLER OF DRIVE DEVICE FOR VEHICLE - A control device is provided for a vehicular drive apparatus, having a differential mechanism and a transmission, for miniaturizing the differential mechanism and/or providing improved fuel economy while preventing a busy shift. With the provision of a switching clutch C06-17-2010
20120142489CONTROL SYSTEM AND METHOD FOR CHANGING SPEED IN STARTING THE ENGINE OF A HYBRID VEHICLE - The present invention relates to a control system and method for changing speed in starting an engine of a hybrid vehicle that is capable of preventing the occurrence of shift shock. In a hybrid vehicle which includes an engine, a first motor for controlling the engine cranking and engine speed, a second motor that is a traction motor for directly transmitting torque to the axle, a first planet gear set in connection between the engine and the first motor, and a second planet gear set in connection between the engine and the second motor, the control system comprises: a PI control part which instructs a calculated torque to the second motor after calculating the torque, wherein the torque corresponds to the target speed of the second motor; and an engine friction torque feed-forward part for transmitting torque to the PI control part by a feed-forward term control method during starting of the engine, wherein the torque corresponds to the reacting power transmitted to the second motor.06-07-2012
20120142488SYSTEM AND METHOD FOR ESTIMATING ENGINE OPERATING POINT OF A HYBRID VEHICLE - The present invention provides a system and method for estimating an engine operating point of a hybrid vehicle. The system includes an engine target speed conversion unit, a PI control unit, an anti wind-up feedback unit, and an engine torque compensation unit. The engine target speed conversion unit converts a target speed of the engine into a target speed of the first motor. The PI control unit calculates and orders a torque with respect to the first motor based on the target speed of the first motor. The anti wind-up feedback unit feeds back an anti wind-up term that is a torque shortage of the first motor to an engine torque compensation unit when the engine operating point is not changed into the target speed of the engine. The engine torque compensation unit compensates a calculated torque for an engine target torque to order the engine target torque. The engine torque compensation unit includes a torque conversion calculator for converting the anti wind-up term into a torque corresponding to an engine shaft.06-07-2012
20100240492SYSTEM FOR VEHICLE PROPULSION HAVING AND METHOD OF MAKING SAME - A vehicle propulsion system includes an electric machine (EM) configured to generate an unconditioned output. The vehicle propulsion system also includes a continuously variable transmission (CVT) having an input side and an output side, the input side mechanically coupled to the EM and configured to receive the unconditioned output from the EM and produce a conditioned output on the output side. A fixed-ratio transmission is mechanically coupled to the output side of the CVT and configured to receive the conditioned output from the CVT and produce a reconditioned output.09-23-2010
20100210410METHOD FOR CARRYING OUT A LOAD SHIFT IN A PARALLEL HYBRID VEHICLE DURING HYBRID OPERATION - A method of carrying out a shift under load during hybrid operation in a parallel hybrid vehicle in which the speed adaptation of the electric machine and the internal combustion engine, required for synchronization to the new gear, is carried out by adapting the speed of the electric machine in a speed regulation mode.08-19-2010
20130190132POWER GENERATION CONTROL DEVICE FOR ELECTRIC VEHICLE - A power generation control device for an electric vehicle includes a power generator driven by an internal combustion engine, a drive battery that stores power generated by the power generator and sensing an SOC that is a state of charge, and a drive motor that propels a vehicle using power generated by the power generator or power stored in the drive battery. The power generation control device controls a power generation torque of the power generator to correspond to an output that is a sum of a drive request output calculated based on a manipulation separately from a drive torque of the drive motor and a battery request output calculated based on the SOC.07-25-2013
20090075779Control device for vehicular power transmitting apparatus - The present invention provides, in a vehicular power transmitting apparatus including a differential portion electrically controlled, a control device which can quickly decrease the engine rotation speed, even if the operational state of an electric motor is limited. An engine-stop controlling means (03-19-2009
20090253550Powertrain Having a Damper Installed Directly to Engine Output and Method of Assembling Same - A hybrid powertrain includes an engine driving an engine output member, such as a crankshaft. A damper is directly connected to the engine output member, and a transmission input shaft is directly connected to the damper, for common rotation therewith. A dry damper is configured to allow the hybrid powertrain to be characterized by a lack of either a flexplate or a flywheel. A method of manufacturing a hybrid powertrain is also provided, including assembling a fully-functional hybrid transmission at a first manufacturing facility and assembling a fully-functional engine by joining a dry damper to an engine at a second manufacturing facility different from the first. Each of the fully-functional engine and hybrid transmission may be tested separately from the other. The fully-functional engine and hybrid transmission may then be shipped to a common assembly facility, and dry-mated at the common assembly facility, forming an assembled hybrid powertrain.10-08-2009
20090111640METHOD AND APPARATUS FOR MONITORING REGENERATIVE OPERATION IN A HYBRID POWERTRAIN SYSTEM - A hybrid powertrain system includes an engine and a torque actuator coupled to a driveline to transfer tractive power to a wheel including a friction brake. A method includes monitoring an operator braking request and determining a request for regenerative braking torque. Operation of the torque actuator to react tractive power is inhibited when a fault is detected in the monitored request for regenerative braking torque and achieved regenerative braking torque.04-30-2009
20090137360CONTROLLER OF VEHICLE DRIVING DEVICE - To execute a manual speed change to apply an engine brake in good response, and to ensure sufficient braking force in a drive unit having a continuously variable speed change unit and a geared speed change unit.05-28-2009
20080318727Control device for vehicle power transmission device - A control device for a vehicle power transmission device including an electrical differential motion portion in which a differential state between input shaft rotation speed and output shaft rotation speed is controlled through control of the operation state of an electric motor linked to a rotating element of a differential motion portion, and a power connection-disconnection device constituting a portion of a power transmission path, includes a controller that lessens a transmission capacity of the power connection-disconnection device if during a switch of the state of the vehicle power transmission device from a non-driving state to a driving state, a change in input torque to the vehicle power transmission device occurs, in comparison with when the change in the input torque does not occur. Therefore, the control device reduces the shift shock when the vehicle power transmission device is switched from the non-driving to the driving state.12-25-2008
20100298088MICRO-HYBRID SYSTEM FOR MOTOR VEHICLE INCORPORATING A PILOTING STRATEGIES MODULE - The micro-hybrid system for a transport vehicle comprises a rotary electric machine (11-25-2010
20100304920Hybrid Assembly , A Hybrid Power-Train , And A Method For Operating A SelectivelyMovable Assembly - An improved hybrid powertrain incorporating a flywheel which provides a mechanical power path and an electrical power path wherein the flywheel can be accelerated or decelerated with or without generating a torque on the output shaft. The design is not only suitable for high energy flywheels, but also for low energy flywheels sized to handle transient power requirements (acceleration and deceleration), thus lowering the power requirement for the prime energy source. As such, the system is ideal for electric vehicles, fuel cell vehicles, and series hybrid vehicles as the prime power source is fractionally sized.12-02-2010
20090069147Vehicular drive control apparatus and method for controlling a vehicular drive apparatus - When shifts are performed at the same time in first and second transmitting portions and the gear ratios of those transmitting portions change in opposite directions, a simultaneous shift control unit controls the shift in the first transmitting portion using a first electric motor and controls the shift in the second transmitting portion using a second electric motor such that the shift in one transmitting portion, from among the first and second transmitting portions, ends while the shift in the other transmitting portion is being performed. The shifts in the two transmitting portions will not end at the same time so the amount of shift shock felt by an occupant can be reduced. Also, the shifts in the two transmitting portions are controlled by the first and second electric motors so the progress of the shifts in those transmitting portions can be actively adjusted.03-12-2009
20090036263Control apparatus for hybrid vehicle power transmitting system - A control apparatus for a power transmitting system of a hybrid vehicle including (a) a differential portion which has a differential mechanism operatively connected to an engine and a first electric operatively connected to the differential mechanism, and a differential state of which is controlled by controlling an operating state of the first electric motor, and (b) a differential-state switching device which is incorporated in the differential mechanism and which is operable according to a differential-state switching condition, to switch the differential mechanism between a differential state in which the differential mechanism is operable to perform a differential function and a non-differential state in which the differential mechanism is not operable to perform the differential function, the control apparatus including a differential-state-switching-condition changing portion operable to change a differential-state switching condition for switching the differential-state switching device to switch the differential mechanism between the differential and non-differential states, when a temperature of the power transmitting system is lower than a predetermined threshold value.02-05-2009
20110009235Hybrid Electric Vehicle Powertrain Control After a Requested Change in Vehicle Direction - A method for controlling a hybrid electric vehicle powertrain includes operating an engine driveably connected to first vehicle wheels, providing an electric motor driveably connected to second vehicle wheels, shifting a gear selector between a forward drive position and a reverse drive position, reducing vehicle speed to or lower than a reference speed, and using a transmission located between the engine and the first wheels and the electric motor to produce reverse or forward drive corresponding to the position to which the gear selector is shifted.01-13-2011
20100179023ELECTRIC ENERGY EXCHANGE SYSTEM, IN PARTICULAR FOR A HYBRID VEHICLE - An electric energy exchange system between at least one motor-generator system and at least one storage member determining a continuous storage voltage between two branches of a bus circuit on which are connected in parallel a DC/DC converter, a filtering capacity, and a DC/AC converter connected on at least one motor-generator system. The system includes at least one thyristor connected as a bypass on the positive bus between the storage member and the output of the converter-voltage raiser to short-cut the converter, and a thyristor priming device to, based on the required voltage at the filtering capacity, determine at least in discharge the shorting of the converter-voltage raiser with direct passage of the current through the thyristor as long as the voltage of the filtering capacity, which is substantially equal to the storage member voltage, is sufficient for the electric machines to provide requested torque. The system can particularly be applied to a power-bypass hybrid vehicle, for continuous variation of transmission ratio.07-15-2010
20110034296METHOD AND DRIVE TRAIN FOR PERFORMING A GEAR SHIFT IN A VEHICLE - A method and drive train for performing a gearshift from a first gear to a second gear in a vehicle provided with a manual or automated manual transmission is provided. A drivetrain incorporating the automated manual transmission includes an engine, connected via a clutch to an electric motor/generator, which in turn is connected to the manual or automated manual transmission and wherein the electric motor/generator is connected to a battery, other energy storing devices or a heating element. The method includes controlling the motor/generator to absorb a torque equalling the torque provided by the engine, such that the manual or automated manual transmission transfers a only minor, or no, torque, disengaging the first gear, controlling the torques absorbed by the motor/generator and provided by the engine such that an engine speed correlates to the engine speed necessary for propelling the vehicle at the second gear, and engaging the second gear.02-10-2011
20100151987Control Device for Hybrid Vehicle - There are provided an engine 06-17-2010
20110118077VEHICLE POWER TRANSMISSION DEVICE AND CONTROL SYSTEM FOR POWER TRANSMISSION - A power transmission apparatus for a vehicle which includes a first, a second, and a third rotor which split power among a motor-generator, an internal combustion engine, and a driven wheel of the vehicle. The apparatus also includes a torque transmission control mechanism which selectively transmits torque between the first rotor and the engine. When the torque transmission control mechanism establishes the transmission of torque between the first rotor and the engine, powers, as produced by the second and third rotors, are opposite in sign to each other. This enables the speed of the first rotor to be set to zero (0) or a very low speed. Therefore, when an initial torque is applied to the engine through the first rotor to start the engine, the mechanical vibration which usually arises from the application of initial torque and is to be exerted on the power transmission apparatus is minimized.05-19-2011
20110245033VEHICULAR HYBRID DRIVE SYSTEM - In a vehicular hybrid drive system including an engine, a first rotary machine that is mechanically connected to the engine and is used at least as a generator, a belt-and-pulley continuously variable transmission to which output of the engine and the first rotary machine is transmitted via an input shaft, and a clutch device that permits and interrupts power transmission between the belt-and-pulley continuously variable transmission and driving wheels, and a second rotary machine that is used at least as an electric motor, and is arranged to cause a vehicle to run even when the engine is stopped, an input pulley of the belt-and-pulley continuously variable transmission is disposed coaxially with the engine, and is mechanically connected to the engine via the input shaft, such that the input pulley is rotated and stopped along with the engine at all times.10-06-2011
20100081539POWER OUTPUT APPARATUS, VEHICLE INCLUDING POWER OUTPUT APPARATUS, AND CONTROL UNIT AND METHOD FOR POWER OUTPUT APPARATUS - When there is no malfunction in either drive shaft rotational speed detection portion (04-01-2010
20100056326STEERING SYSTEMS AND METHODS FOR HYBRID VEHICLES - A steering system generally includes a steering gear for controlling a steer axle of the a hybrid vehicle in response to rotation of a steering wheel. The steering system also includes a power steering pump functionally connected to an internal combustion engine for supplying pressurized fluid to the steering gear. The steering system further includes an accumulator, a power steering controller, and a pressure sensor for monitoring the pressure of the accumulator.03-04-2010
20100069197CONTROL DEVICE OF A VEHICLE, CONTROL METHOD AND RECORDING MEDIUM BEARING A PROGRAM IMPLEMENTING THE METHOD - An ECU executes a program including a step of determining whether a manual shift mode is active or not, a step of calculating a lower limit revolution speed based on a vehicle speed and a gear selected by a driver when the manual shift mode is active, a step of changing a target idle revolution speed from a predetermined revolution speed to the lower limit revolution speed when a required engine torque is substantially zero and the engine is not in a fuel cut state, and a step of transmitting a control signal corresponding to the target idle revolution speed to the engine.03-18-2010
20100062896METHOD FOR OPERATING A HYBRID DRIVE OF A MOTOR VEHICLE - A method is provided for operating a hybrid drive of a motor vehicle which has a combustion engine, at least one electrical machine, and at least one electrical accumulator, the electrical machine and the electrical accumulator belonging to an electrical system of the motor vehicle. The following steps are provided for implementing the method: subdividing the operation of the electrical machine into adjacent subranges of a) transient compensation operation, b) boost and/or recuperation operation, and c) operation for maintaining the vehicle electrical system; assigning torque limits and/or power output limits of the electrical machine in at least two subranges; and, releasing and/or influencing the particular torque limits and/or power output limits of the subranges as a function of the current state of the electrical accumulator and/or of the electrical machine and/or of the vehicle electrical system.03-11-2010
20100137099POWER GENERATING APPARATUS AND METHOD FOR ASSISTING ENGINE - The present invention relates to a power generating apparatus and method for assisting an engine, capable of supplying auxiliary power to an engine transmission shaft when the engine is transmitting power to the engine transmission shaft via a gearbox. The power generating apparatus comprises: a power supply unit for providing a high voltage power source; a driver for converting the high voltage power source into a driving power source and transmitting same; and a direct-current motor for converting the driving power source transmitted by the driver into the auxiliary power to be transmitted to the engine transmission shaft; wherein the rotational speed of the direct-current motor driving the engine transmission shaft is enabled to be higher than that of the engine driving the engine transmission shaft, so as to supply the auxiliary power to the engine transmission shaft.06-03-2010
20100069196Control apparatus for vehicular drive system - A control apparatus for a vehicular drive system, including an engine speed limiting device configured to limit operating speed of engine to an upper limit determined according to speed ratio of automatic transmission portion, so as to prevent a rise of operating speed of first electric motor into excessive rise range, so that the excessive rise of the first electric motor speed due to a shifting action of the automatic transmission portion is prevented to improve the durability of the first electric motor. For example, the speed of the engine is limited to the upper limit when the automatic transmission portion is shifted to a failure gear position established as a result of a failure of the automatic transmission portion to perform a shifting action following a shifting boundary line map, so that the vehicle can be driven upon the failure of the automatic transmission portion, while preventing an excessive rise of the first electric motor speed.03-18-2010
20110070999Control of an Engine Restart in a Hybrid Electric Vehicle - A method for restarting an engine in a hybrid electric powertrain includes using an auxiliary pump while the engine is shutdown to maintain stroke pressure in an oncoming transmission friction control element whose engagement is required to launch the vehicle following the restart, initiating an automatic engine restart, increasing a torque capacity of the control element while the engine is restarting, and using pressure produced by a transmission pump in the transmission to lock the control element after the engine restarts.03-24-2011
20090023548Control device for hybrid vehicle power transmitting apparatus - This invention relates to a control device for a hybrid vehicle power transmitting apparatus. A heat generation control is executed to increase a heat generation amount of an electric motor M01-22-2009
20090023547Control apparatus for vehicular drive system - A control apparatus for a drive system of a vehicle including (a) an electrically controlled differential portion having (i) a differential mechanism, (ii) a first electric motor operatively connected to a rotary element of the differential mechanism, (iii) a drive power source, an input shaft (01-22-2009
20100311539MOTOR VEHICLE - A motor vehicle with a hybrid drive system (12-09-2010
20100004089Control device for hybrid vehicle drive apparatus - A control device for hybrid vehicle drive apparatus is disclosed. Upon receipt of a start-up request on an engine (01-07-2010
20090318261VEHICLE DRIVE DEVICE CONTROLLER - In a vehicle driving apparatus including a differential mechanism capable of executing a differential action, a control device can make the driving apparatus small-size, improve fuel consumption, and increase output torque. A transmission mechanism can be switched to a continuously variable shifting state and a step variable shifting state, by a switching clutch or a switching brake. Also, with a switch control bringing the switching clutch into a half-engaged state, during an engine startup/running, while the differential portion is allowed to operate as the electrically controlled continuously variable transmission, a reaction force against an engine torque is generated by the half-engaged switching clutch. Thus, the engine torque not less than the torque bearable by a first electric motor can be inputted into the differential portion, thereby increasing the output torque.12-24-2009
20090118074METHOD AND APPARATUS TO MONITOR ROTATIONAL SPEEDS IN AN ELECTRO-MECHANICAL TRANSMISSION - A powertrain includes an electro-mechanical transmission mechanically-operatively coupled to an internal combustion engine and an electric machine to selectively transmit mechanical power to an output member. Powertrain operation includes monitoring operator inputs, and determining input speeds and changes in input speeds for the internal combustion engine and the electric machine. The input speeds are compared to threshold input speeds, and the changes in input speeds are compared to threshold changes in input speeds. Input torques of the internal combustion engine and the electric machine are reduced when any one of the input speeds and changes in input speeds exceeds the corresponding threshold.05-07-2009
20090118079METHOD FOR CONTROLLING VOLTAGE WITHIN A POWERTRAIN SYSTEM - A method for controlling a powertrain system includes monitoring voltage of an energy storage device. The method further includes modifying a preferred voltage limit when the voltage of the energy storage device transgresses a trigger voltage limit, and determining the power constraint of a first power actuator based on the estimated output power of the energy storage device when the voltage of the energy storage device transgresses the preferred voltage limit.05-07-2009
20090118077SYSTEM CONSTRAINTS METHOD OF CONTROLLING OPERATION OF AN ELECTRO-MECHANICAL TRANSMISSION WITH AN ADDITIONAL CONSTRAINT - Operation of an electro-mechanical transmission includes determining motor torque constraints and battery power constraints. An additional constraint on the electro-mechanical transmission is determined. A preferred output torque is determined that is achievable within the motor torque constraints and based upon the additional constraint and the battery power constraints.05-07-2009
20090118076METHOD FOR PREFERENTIAL SELECTION OF MODE AND GEAR AND INPUT SPEED BASED ON MULTIPLE ENGINE STATE FUELING COSTS FOR A HYBRID POWERTRAIN SYSTEM - A method for controlling a hybrid powertrain system including an engine selectively operative in one of an all-cylinder state and a cylinder deactivation state based upon power costs includes determining engine power costs for each operating range state of the transmission, determining a system power cost, selecting a preferred cost and corresponding engine operating points, selecting a preferred operating range state, selecting the engine state, and controlling the engine based upon the selected operating range state, the selected engine state, and the engine operating points.05-07-2009
20080318726Control apparatus for vehicular power transmitting system - A control apparatus for a vehicular power transmitting system including (a) an electrically controlled differential portion which has a differential mechanism and an electric motor operatively connected to a rotary element of the differential mechanism and which is operable to control a differential state between a rotating speed of its input shaft connected to an engine and a rotating speed of its output shaft by controlling an operating state of the electric motor, and (b) a transmission portion which constitutes a part of a power transmitting path and which functions as an automatic transmission portion, the control apparatus including a shifting control portion configured to set a shifting point of the transmission portion, on the basis of a delay of a response of a change of an operating speed of the engine to a change of a required vehicle drive force to be transmitted through the vehicular power transmitting system.12-25-2008
20120122628METHOD AND SYSTEM FOR CONTROLLING RATE OF CHANGE OF RATIO IN A CONTINUOUSLY VARIABLE TRANSMISSION - Systems and methods for efficiently and effectively controlling the rate of change of ratio, not simply the ratio, in a CVT. By controlling the rate of change of ratio, the acceleration or deceleration of a vehicle can be controlled in an efficient manner. Furthermore, the rate of change of ratio can be controlled by controlling the clamping pressure of the pulleys and/or differential pressure between the pulleys with minimal slip by using a servo control mechanism adapted for control by a system controller based on equilibrium mapping and other control parameters.05-17-2012
20080254934Control device for hybrid vehicle drive apparatus - A control device for hybrid vehicle drive apparatus has a differential mechanism operative to perform a differential action and an electric motor. The control device prevents a second electric motor from reaching a high-speed rotation with a likelihood of degradation occurring in durability of the second electric motor when a “D” position is switched into an “N” position during a running of a vehicle. When a shift lever (10-16-2008
20080254935Hybrid driving apparatus with multistage transmission provided in power transmission path and control method thereof - When a sub transmission mechanism is switched to the LO-side gear stage, a hybrid control unit executes a control operation such that vehicle speed does not exceed limit vehicle speed determined in advance in accordance with the transmission gear ratio of LO-side gear stage. Specifically, the hybrid control unit reduces at least one of the driving torque generated by the engine and the second motor generator, so that rotation speed of the second motor generator does not exceed tolerable rotation speed. Further, the hybrid control unit reduces at least one of the driving torque generated by the engine and the second motor generator when any of temperatures respectively detected by temperature sensors exceed corresponding upper limit temperatures.10-16-2008
20120202645POWER PLANT - A power plant that is capable of attaining downsizing and reduction of manufacturing costs and enhancing the degree of freedom in design thereof. In the power plant 08-09-2012
20110053733ENGINE STARTING CONTROL APPARATUS AND METHOD FOR A HYBRID VEHICLE - A hybrid powertrain includes an engine having a crankshaft, and a hybrid transmission having an input member, an output member, and at least one motor/generator operable to provide or receive torque. A damper connects the crankshaft with the input member. A bi-directional rotational position sensing system operatively connects with either the crankshaft or an input side of the damper, and is configured to sense the rotational position and direction of the crankshaft, and provide a position signal indicative thereof. At least one controller is configured to receive the position signal and to provide a torque command to the motor/generator based at least in part on the position signal. The torque command is operable to cause the motor/generator to substantially cancel an expected engine torque pulse associated with the sensed rotational position during starting of the engine with the damper open. A method for controlling the hybrid powertrain is provided.03-03-2011
20110028268SYSTEM AND METHOD FOR CONTROLLING ENGINE REVOLUTIONS FOR HYBRID CONSTRUCTION MACHINE - A system and method for controlling engine revolutions for a hybrid construction machine is provided. The system for controlling engine revolutions for a hybrid construction machine, including an engine, a hydraulic pump which is driven by the engine to drive a hydraulic actuator with discharged hydraulic fluid, a motor-generator which is driven by the engine to generate electricity and to drive the hydraulic pump as a motor supplementing the engine, an energy storage device which is charged with electric energy generated by the motor-generator and which supplies the electric energy for motor operation of the motor-generator, a torque detection means for detecting an output torque of the hydraulic pump that is required to drive the hydraulic actuator, and a hybrid control means for controlling the motor operation of the motor-generator so as to supplement the engine output if the change of the output torque of the hydraulic pump detected by the torque detection means exceeds a predetermined level and it is determined that an engine revolution drop will occur.02-03-2011
20100240491SYSTEM FOR VEHICLE PROPULSION HAVING AND METHOD OF MAKING SAME - A vehicle propulsion system includes a continuously variable transmission (CVT) having an input side and an output side, the CVT configured to condition an input received at the input side and to output the conditioned input at the output side. The vehicle propulsion also includes an internal combustion engine (ICE) mechanically coupled to the input side of the CVT and configured to provide the input to the CVT. The vehicle propulsion includes an electric machine (EM) mechanically coupled to the output side of the CVT, the EM configured to receive the conditioned input from the CVT.09-23-2010
20100323844MOTOR POWER CONTROL - A hybrid electric vehicle includes an internal combustion engine, a traction battery, and a hybrid electric powertrain including an electric motor powered by the traction battery. A method of controlling the vehicle includes determining a desired motor torque, and calculating a desired total motor power based on the desired motor torque, current motor speed, and a loss map indicating motor losses as a function of motor torque and motor speed. The desired total motor power is limited to system limits based on traction battery charge and discharge power limits. A motor torque command which will achieve the limited total motor power is calculated. The motor is controlled based on the motor torque command.12-23-2010
20100022347DRIVING FORCE CONTROL APPARATUS FOR HYBRID VEHICLE - In a driving force control apparatus for a hybrid vehicle, it is configured that an engine ECU (01-28-2010
20100022346CONTROL DEVICE FOR VEHICULAR DRIVE SYSTEM - A control device for a vehicular drive system having (i) an engine, (ii) an electrically controlled differential portion operative to control an operating state of an electric motor connected to a rotary element of a differential mechanism for power-transmissive state for thereby controlling a differential state between a rotation speed of an input shaft connected to the engine, and a rotation speed of an output shaft, and (iii) a shifting portion forming a part of a power-transmitting mechanism between the electrically controlled differential portion and drive wheels, the control device including high-speed rotation preventing means for preventing high-speed rotations of each rotary elements of both the differential mechanism and the shifting portion, when a drop occurs or drop occurrence is predicted, in a supplied hydraulic pressure applied to a hydraulically operated frictional engaging device of the shifting portion, to a level less than a given value, wherein the high-speed rotation preventing means reduces torque or rotation speed of an input shaft of the shifting portion by controlling the engine or the electric motor.01-28-2010
20100125020POWER OUTPUT APPARATUS - A power output apparatus 05-20-2010
20110319224HYBRID DRIVE SYSTEM - A hybrid drive system configured with a power split device that performs a differential operation with at least three rotating elements including an input rotating element, a reaction force rotating element, and an output rotating element that is connected to the output member so that driving force is transmitted. A reduction gear that performs a differential operation with at least four rotating elements including an input rotating element, a stationary element, a first output rotating element, and a second output rotating element. A control portion selects an operating mode of the hybrid drive system, from among a first split mode, and a second split mode.12-29-2011
20120108384CONTROL DEVICE FOR VEHICLE DRIVE DEVICE - A control device for a vehicle drive device in a vehicle having a power source including an engine and a stepped automatic shifting portion making up a part of a power transmission path between the power source and a drive wheel, the control device providing input torque limiting control if a downshift of the automatic shifting portion is executed during an accelerator depressing operation, to limit an input torque to the automatic shifting portion before initiation of an inertia phase in the downshift as compared to the case of not executing the downshift, wherein in the input torque limiting control, if an accelerator variation before the start of the downshift is equal to or less than a predetermined accelerator variation limit, the control device limits the input torque before the initiation of the inertia phase to the input torque at the time of a shifting output commanding the execution of the downshift, and wherein if an accelerator variation before the start of the downshift is greater than the accelerator variation limit, the control device limits the input torque before the initiation of the inertia phase equal to or less than a predetermined input torque limit value larger than the input torque at the time of the shifting output.05-03-2012
20120115674CONTROLLER FOR VEHICLE DRIVE UNIT - While driving is performed by transmitting the power of an engine 05-10-2012
20090137361CONTROLLER FOR VEHICLE DRIVE DEVICE - A control system for a drive unit of a vehicle, including a reaction force establishing device controlling a speed change ratio of a continuously variable transmission, and a clutch mechanism arranged on a power transmission route from the continuously variable transmission to a wheel and in which a torque capacity thereof is controllable. A first input torque control mechanism lowers a torque to be inputted to the clutch mechanism through the continuously variable transmission, by controlling a torque of the reaction force establishing device while the torque capacity of the clutch mechanism is being controlled. The system reduces a change in a torque inputted to a clutch mechanism, in case of carrying out a speed change operation of a continuously variable transmission and engaging the clutch mechanism.05-28-2009
20100197449CONTROL DEVICE FOR HYBRID VEHICLE POWER TRANSMITTING APPARATUS - A control device is provided for a hybrid vehicle power transmitting apparatus wherein when a fuel type supplied to an engine is altered, a drop in startability of the engine resulting from alteration on the fuel type is suppressed. Fuel-type determining means determines the fuel type for use in operating the engine, based on which a reactive control representing a control of reactive control of a second electric motor counteracting rotational resistance of the engine during engine startup, is altered. Accordingly, second-motor torque (reactive torque) for increasing an engine rotation speed during engine startup is adjusted depending on the fuel type, thereby increasing a temperature of fuel compressed and expanded in the engine, to a level available to initiate an ignition. This prevents the alteration of the fuel type from causing degradation in startability of the engine when the fuel type supplied to the engine is altered.08-05-2010
20100093487HYBRID VEHICLE AUXILIARY EQUIPMENT ENERGY MANAGEMENT - A parallel hybrid vehicle launches from rest or near rest with its internal combustion engine and with its electric motor/generator in generator mode, accelerates to a maximum speed, and decelerates to rest with its internal combustion engine disengaged and its motor/generator in generator mode. Electrical energy generated is stored in an energy storage device and is only as much energy as needed for operation of the vehicle's electrically powered auxiliary equipment while the vehicle is at rest.04-15-2010
20100093486HYBRID DRIVING APPARATUS AND VEHICLE PROVIDED WITH THE SAME - Switching conditions are defined by a threshold α04-15-2010
20120122629POWER PLANT - A power plant which is capable of preventing losses due to power circulation and enhancing driving efficiency thereof in an EV operation mode. In the power plant 05-17-2012
20090131215DRIVE FORCE OUTPUT APPARATUS, METHOD FOR CONTROLLING SAME APPARATUS, AND VEHICLE - A drive force output apparatus has a controller that sets an upper limit of power allowed to be consumed by an auxiliary based on at least a reference power storage amount corresponding to the reference of the range in which the power storage amount of a power storage is monitored and controls a power generator, an electric motor, and the auxiliary such that drive force corresponding to target drive force is output to a drive shaft while the power consumed by the auxiliary remains equal to or smaller than the upper limit.05-21-2009
20120178584PLUG-IN HYBRID ELECTRIC VEHICLE - A method of operating a hybrid vehicle propulsion system includes selectively operating the engine to consume fuel stored on-board the vehicle based on a residence time of the fuel stored on-board the vehicle and further based on a profile of ambient conditions over the residence time.07-12-2012
20100292046METHOD AND DEVICE FOR OPERATING A HYBRID DRIVE OF A VEHICLE - The invention relates to a method and a device for operating a hybrid drive (11-18-2010
20090042688CONTROL APPARATUS OF ELECTRIC MOTOR - An apparatus to control an electric motor to drive an electric-powered vehicle includes an accelerator position detector, a current controller to provide current to the electric motor through an inverter, a semiconductor device of the current controller configured to operate the inverter in response to a detected accelerator position, and a torque compensator to supply the electric motor with a modified current of the semiconductor device, wherein the torque compensator is configured to provide the modified current to the electric motor at a predetermined interval of time in response to a temperature increase in the semiconductor device when the detected accelerator position exceeds a predetermined threshold.02-12-2009
20090017984Engine start-up device for hybrid vehicle power transmitting device - In an engine start-up device, engine start-up means 01-15-2009
20090017983Control apparatus for vehicular drive system - A control apparatus for a vehicular drive system including (a) an internal combustion engine, and (b) a first transmission portion and a second transmission portion disposed in a power transmitting path between the internal combustion engine and a drive wheel of a vehicle, the first transmission portion having an electrically controlled differential portion which includes a first electric motor and a differential state of which is controllable by controlling an operating state of the first electric motor, the control apparatus includes an internal-combustion-engine control portion configured to change an operating state of the internal combustion engine when it is determined that a shifting action of the second transmission portion is abnormal.01-15-2009
20080300099Power Output Apparatus, Motor Vehicle Equipped with Power Output Apparatus, Control System for Power Output Apparatus, and Control Method of Power Output Apparatus - In the presence of a torque change request (step S12-04-2008
20110237386System and Method of Positional Control with Backlash Compensation - A device for preventing backlash in a gear train, comprising a first and second drive gear, driven by a first and second motor, with a driven gear, a system controller defining a nominal trajectory of said driven gear, a position feedback controller for calculating a speed set point, a phase controller for calculating a difference between said first and second motor torque, providing torque upper and lower levels, comparing said difference to said upper and lower levels and adjusting the phase set point for said first and second motors based at least upon the comparing, where the phase is reduced if said difference is greater than or equal to said upper level, said phase is increased if said difference is less than or equal to said lower level, and said phase is kept constant if said difference is greater than said lower level and less than said upper level.09-29-2011
20120277058STARTING METHOD FOR HYBRID ELECTRIC VEHICLE AND SYSTEM ARCHITECTURE OF HYBRID ELECTRIC VEHICLE - Provided is a starting method for hybrid electric vehicle, which includes the steps of: (a11-01-2012
20120329603HYBRID VEHICLE - A hybrid vehicle is capable of running using an engine and a motor as drive sources and includes an exhaust turbine to be driven and rotated by exhaust of the engine, and a generator which generates power by being driven and rotated by the exhaust turbine. The motor is driven by electric power generated by the generator.12-27-2012
20120100956 WORKING MACHINE AND A METHOD FOR OPERATING A WORKING MACHINE - A working machine includes a prime mover for supplying torque to the driving wheels of the working machine, and a transmission line arranged between the prime mover and the driving wheels for transmitting torque from the prime mover to the driving wheels. The transmission line includes a gearbox arranged between the prime mover and the wheels, and the working machine further includes at least one hydraulic machine in a hydraulic system for moving an implement arranged on the working machine and/or steering the working machine, and an electric machine for driving or braking the driving wheels and/or for driving or braking the at least one hydraulic machine. The electric machine is arranged in parallel with the prime mover with respect to the transmission line and is mechanically connected to the transmission line between the prime mover and the gearbox. The gearbox is a continuously variable transmission having a variator unit, and the gearbox has an operation mode where the rotation speed of the output shaft of the gearbox is zero or close to zero independently of the rotation speed of the input shaft of the gearbox at the same time as torque can be transmitted from the input shaft to the output shaft.04-26-2012
20100167869METHOD FOR OPERATING A HYBRID DRIVE OF A MOTOR VEHICLE - In a method for operating a hybrid drive of a vehicle having at least one internal combustion engine and at least one first electric machine as drive machines of a first drive train of the vehicle, and an associated first transmission, the total torque of the drive machines is adapted in a shifting operation of the transmission in order to reduce the load at the transmission and/or in order to modify rotational speeds according to the new transmission ratio, and/or the torque gradient of the drive machines is restricted to a specifiable, maximum torque gradient of the resulting total torque of the drive machines of the first drive train in a transition between acceleration operation and trailing throttle operation.07-01-2010
20130017926CRANKING TORQUE CONTROL APPARATUSAANM Miwa; KojiAACI Susono-shiAACO JPAAGP Miwa; Koji Susono-shi JPAANM Kawai; TakashiAACI Gotemba-shiAACO JPAAGP Kawai; Takashi Gotemba-shi JP - A cranking torque control apparatus (01-17-2013
20100173744METHOD AND DEVICE FOR OPERATING A DRIVE UNIT - A method and an apparatus are provided for operating a drive unit having at least one combustion engine and at least one electrical machine mechanically coupled to the at least one combustion engine. The method and apparatus enable improved boost operation. In an embodiment, a target value for an output variable of the drive unit is implemented by the at least one combustion engine and the at least one electrical machine. The contribution of the at least one electrical machine to the implementation of the target value for the output variable is made available at most for a predefined time.07-08-2010
20100087287Control device for vehicular drive apparatus - The present invention provides a control device for a vehicular drive apparatus with a structure of enabling the suppression of gearshift shock occurring during concurrent shifting executed of a first shifting portion and a second shifting portion. When the concurrent shifting are executed around the same time in which a down shift in one of a differential portion (first shifting portion) and an automatic shifting portion (second shifting portion) and an upshift in the other of them are executed, a first electric motor is caused to control a rotation speed of a second rotary element (sun gear). Thus, a shifting progress state upon the concurrent shifting is controlled. This causes shifting directions i.e., variation of the engine rotation speed in shifting of a shifting mechanism to be set in a unidirectional, enabling the suppression of gearshift shock.04-08-2010
20100087288VEHICLE AND CONTROL METHOD OF VEHICLE - The intermittence prohibition vehicle speed Vpr is set to the smallest of the standard intermittence prohibition vehicle speed Vpr04-08-2010
20080227591Vehicular drive system and control method - A vehicular drive system includes a standby control apparatus which controls a switch to standby control based on a switching line graph that has a standby region that places a differential state switching device in a state just before it starts to apply. This standby region is located between a differential region and a locked region on the switching line graph. Accordingly, when the differential state switching device enters the standby region from the differential region, it is placed in a state just before it starts to apply. As a result, the differential state switching device is quickly able to have the necessary torque capacity when the engine torque is increased, which suppresses a decrease in the durability of the differential state switching device.09-18-2008
20080227590Vehicle, driving apparatus and control method of both - During a standstill, a prescribed rotation speed N09-18-2008
20080220933VEHICULAR CONTROL APPARATUS AND CONTROL SYSTEM - A control apparatus for a vehicle is provided with an electric motor that outputs driving force for running the vehicle; an automatic transmission that establishes a plurality of gears by selectively applying and releasing a plurality of friction apply elements in a predetermined combination for each gear among the plurality of gears, and transmits power from the electric motor to an output shaft of the vehicle; and a torque controlling portion which, when there is a demand for a power-off downshift, controls output torque of the electric motor such that input torque of the automatic transmission becomes constant torque during an inertia phase of that shift, and controls the output torque of the electric motor such that the output torque of the automatic transmission comes to match the torque required after the shift, after rotation synchronization by an apply-side friction apply element is complete.09-11-2008
20080220932Drive System for a Motor Vehicle Comprising an Internal Combustion Engine and an Electric Motor - The invention relates to an apparatus and a method for starting an internal combustion engine for a motor vehicle, wherein the internal combustion engine has an associated electrical machine (09-11-2008
20130178329Traction Chain For A Hybrid Vehicle - The invention relates to a drive wheel traction chain for a hybrid vehicle comprising a heat engine and a hydraulic traction machine powered by hydraulic accumulators forming two power units that can be used to drive the drive wheels of the vehicle. The invention further comprises a recharge module including electricity storage batteries connected to an electric machine which drives a hydraulic recharge machine that powers the hydraulic accumulators, and a means for controlling the recharge module connected to the means for controlling the power units of the vehicle.07-11-2013
20130178328FUEL SAVING SYSTEM THAT FACILITATES VEHICLE RE-STARTS WITH THE ENGINE OFF - A fuel saving system for a vehicle powered by an internal combustion engine and having a hydraulically activated automatic transmission. The system includes a hydraulic pump able to supply pressurized transmission fluid to the automatic transmission, an energy storage device, and at least one motor powered by the energy storage device including a motor that is mechanically connected to the hydraulic pump and a motor that is coupled to the engine. The system also includes a controller that is responsive to one or more operating conditions to turn off the engine when the vehicle is stopped and to use the motor that is mechanically connected to the hydraulic pump so as to activate the pump to supply sufficient power to the transmission to maintain engagement of the transmission in a driving gear. The controller is also responsive to one or more operating conditions to activate the motor that is coupled to the engine so as to restart the engine with the transmission engaged in a driving gear.07-11-2013
20130157804Methods and apparatus for flexure-based torque sensor in a bicycle - In exemplary implementations, a bicycle has “power pedaling”, in which a rider's pedaling efforts are augmented by an electric motor. The rider can control the motor simply by pedaling. It is desirable that the motor torque not exceed the rider torque; otherwise the motor overpowers the rider. A radial flexure is part of the drivetrain that transmits torque from the rider to the back wheel. One part of the flexure is connected to the back wheel casing; another part of the flexure is connected to the freewheel. If motor velocity exceeds rider velocity, this causes the flexure to elastically deform. Two sensors measure the deformation, which is equal to the difference between the angular displacements of the casing and freewheel, respectively. A PD controller seeks to make this difference equal to zero, by controlling voltage levels in the motor (and thus controlling the torque contributed by the motor).06-20-2013
20100304921METHOD FOR DETERMINING STATES OF HYBRID DRIVE TRAIN OF A VEHICLE - A method for determining conditions of a hybrid drive train of a motor vehicle. The method determines, the actual conditions (12-02-2010
20130157805DUAL PINION DRIVE SYSTEM - A system and method are disclosed for controlling electrical machines including a controller component which receives a first signal providing a measured parameter of the electrical machine and a second signal providing a reference parameter of the electrical machine, using the first and second signals being used to produce a first control signal. A first filter component receives the first signal from the electrical machine and uses the first signal to produce a second control signal. A second filter component receives a third signal which relates to a reference parameter of a second electrical machine and uses the third signal to produce a third control signal. The system and second control signals are used to produce a first output control signal for provision to the first electrical machine, and the first and third control signals are used produce a second output control signal for provision to the second electrical machine.06-20-2013
20130196816CONTROL DEVICE OF VEHICLE DRIVE DEVICE - A control device of a vehicle drive device having an electric motor coupled to a power transmission path between an engine and drive wheels, the control device providing fuel cut electric motor drive control of increasing a rotation speed of the engine with a drive force of the electric motor and interrupting fuel supply to the engine at the time of acceleration operation of a vehicle, and the fuel cut electric motor drive control being terminated if a rotational angular acceleration of the engine becomes equal to or less than a predetermined engine rotational angular acceleration determination value after starting provision of the fuel cut electric motor drive control.08-01-2013
20120094800VEHICULAR SHIFT CONTROL DEVICE - A vehicular shift control device is provided that controls the input rotational speed of a geared transmission by adjusting the rotational speed of a drive source at downshift of the geared transmission. The greater the deceleration of the vehicle, the smaller is set the change gradient of the input rotational speed of the geared transmission. Therefore, even if the decrease rate of the post-shifting synchronization rotational speed is great, the incident angle γ of the input rotational speed of the geared transmission relative to the post-shifting synchronization rotational speed is maintained as a large angle. Even when the deceleration of the vehicle during downshift is great, the downshift is smoothly executed without producing an excessive synchronization shock.04-19-2012

Patent applications in class Electric engine

Patent applications in all subclasses Electric engine