Class / Patent application number | Description | Number of patent applications / Date published |
180338000 | Condition responsive (e.g., responsive to speed, load, etc.) | 14 |
20080217092 | VEHICLE CONTROL SYSTEMS AND METHODS - Systems and methods for controlling the speed and direction of vehicles such as tractors. | 09-11-2008 |
20080308339 | Fuel feeding mechanism of a vehicle - A fuel feeding mechanism of a vehicle includes an electronic control unit, and a throttle; the throttle is equipped with a feedback signal device, and the feedback signal device is connected to the electronic control unit; the throttle includes a pivotal shaft; a throttle position sensor is connected to the pivotal shaft of the throttle; a signal source is connected to the throttle position sensor as well as the feedback signal device of the throttle to interfere in and change a signal of the throttle, thus advancing the time of the vehicle shifting gears and helping to reduce fuel consumption. | 12-18-2008 |
20090045003 | CONSTRUCTION VEHICLE - The construction vehicle includes an engine, an accelerator pedal, a main pump configured to be driven by the engine, first and second traveling motors driven by pressured oil discharged from the main pump to generate driving force for traveling, a driving shaft configured to receive the driving force from the first traveling motor and the driving force from the second traveling motor, a clutch configured to switch between transmission and non-transmission of the driving force from the second traveling motor to the driving shaft, an accelerator opening degree detection unit, a vehicle velocity detection unit, and a control unit. The control unit is configured to determine the switchover velocity depending on the opening degree of the accelerator pedal, and to control the clutch when the vehicle velocity that is detected by the vehicle velocity detection unit reaches the switchover velocity. | 02-19-2009 |
20090114468 | Method for Vehicle Creep Torque Control - A vehicle and a method of operation is disclosed. The method of operating the vehicle may include a method of controlling a creep torque in a vehicle having a powertrain configured to provide variable creep torque. The method may comprise the steps of: detecting a vehicle creep torque condition, determining a brake torque, and adjusting a creep torque applied by the powertrain based on the brake torque. | 05-07-2009 |
20100006365 | Vehicle - A vehicle has an engine, an accelerator for controlling the rotary speed of the engine, an axle and a multi-speed transmission for transmitting power from the engine to the axle. The multi-speed transmission includes an odd-numbered speed drive train for an odd-numbered speed level, a first clutch for the odd-numbered speed drive train, an even-numbered speed drive train for an even-numbered speed level, and a second clutch for the even-numbered speed drive train. In correspondence to operation of the accelerator and an actual speed of the axle, either the odd-numbered speed drive train or the even-numbered speed drive train is selected so as to transmit power from the engine to the axle. A shift-up or shift-down timing between the odd-numbered speed level and the even-numbered speed level relative to variation of the actual speed of the axle is changed according to detection of a tilt angle of the vehicle or a weight of the vehicle. | 01-14-2010 |
20100044140 | Engagement/Disengagement of Transmission with Auxiliary Gearbox - Embodiments which selectively engage a motor with auxiliary equipment and a final drive assembly of the motor vehicle are disclosed. A transmission of such a motor vehicle may include a transmission input shaft to receive power from the motor, a transmission output shaft, and clutches and associated gears that define power delivered by the transmission output shaft based upon power received by the transmission input shaft. An auxiliary gearbox may include a transmission input gear associated with the transmission output shaft, an equipment output gear to power the auxiliary equipment, and a drive output gear to power the final drive assembly. The motor vehicle may further include a transmission control module to engage the transmission input gear with the equipment output gear by transitioning among locking the transmission output shaft, disengaging the clutches to reduce torque on the transmission output shaft, and placing the transmission in an unlocked neutral state. | 02-25-2010 |
20100071987 | Speed Change Control System for Industrial Vehicle - A speed change control system for an industrial vehicle includes: a speed ratio detecting unit that detects a speed ratio of speeds of an input shaft and of an output shaft of a torque converter; a torque converter speed ratio-based speed changer that shifts up or shifts down a speed stage of a transmission | 03-25-2010 |
20100170740 | METHOD AND APPARATUS FOR ADAPTING MINIMUM TORQUE CONVERTER SLIP FOR NEUTRAL IDLE CONTROL - A method adaptively learns torque converter (TC) slip in a transmission having a hydrodynamic torque converter assembly by setting a baseline TC slip profile, determining an actual TC slip value at different temperatures, generating an adapted TC slip profile by adapting the baseline TC slip profile in response to the actual TC slip values, and controlling the amount of TC slip during a neutral idle (NI) state of the transmission using the adapted TC slip profile. A vehicle includes a torque converter and a controller. The controller calibrates the TC slip during a first transmission state, and controls the amount of TC slip during a second transmission state. The controller measures actual TC slip data points, and adapts a TC slip profile to more closely approximate a natural slip curve of the vehicle in response to the actual slip TC slip value data points. | 07-08-2010 |
20100193279 | HYDRAULIC TRANSMISSION CIRCUIT - Hydraulic transmission circuit with N hydraulic motors, wherein each motor comprises N sub-motors, all N | 08-05-2010 |
20120205182 | AUTO INTER-AXLE DIFFERENTIAL LOCK ENGAGEMENT FOR IMPROVED BRAKING CAPACITY - A work vehicle is provided having a front wheel assembly and a rear wheel assembly. The front wheel assembly may include a front axle assembly, and the rear wheel assembly may include a rear axle assembly. The vehicle may include a braking system configured to transfer front axle braking torque to the rear axle assembly when the vehicle is positioned on a slope. | 08-16-2012 |
20130126257 | Method Of Controlling Gear Ratio Rate Of Change In Continuously Variable Transmission - A method is provided for controlling a gear ratio rate of change in a machine having a continuously variable transmission. The method includes moving an operator input device to a changed position, receiving electronic data indicative of the changed position, and determining a non-limited desired gear ratio based at least in part on the changed position. A maximum gear ratio rate of change corresponding to the changed position is selected from an electronically stored gear ratio rate map. A current desired gear ratio is determined based at least in part on the non-limited desired gear ratio and the maximum gear ratio rate of change. The method also includes changing a commanded gear ratio of the continuously variable transmission to the current desired gear ratio using electronic signals. | 05-23-2013 |
20130133973 | Charge Pressure Reduction Circuit For Improved Transmission Efficiency - A charge pressure reduction circuit for a loader backhoe in which a directional control valve causes the charge pump to operate at a system pressure high enough to adequately supply a clutch circuit when conditions indicate the vehicle is operating in a loader or transport mode. The directional control valve causes the charge pump to operate at a lower pressure as, for example, required for a lubrication circuit when conditions indicate the vehicle is in a backhoe operating mode. | 05-30-2013 |
20130168179 | SYSTEM AND METHOD FOR CONTROLLING TRANSMISSION BASED ON VARIABLE PRESSURE LIMIT - A system for controlling a transmission including a fluid pump and a fluid motor operably coupled to one another in a fluid circuit is disclosed. The system includes a controller configured to receive signals indicative of operator inputs, and determine a variable pressure limit in the fluid circuit based on the signals indicative of operator inputs. The controller is further configured to control displacement of at least one of the fluid pump and the fluid motor based on the variable pressure limit, such that a pressure level in the fluid circuit is maintained below the variable pressure limit. | 07-04-2013 |
20140367187 | Hydraulic Control Device for Work Machine - A hydraulic control device for work machine includes: a driving device that generates a driving force for traveling of the work machine; a park braking device that parks the work machine; an operating unit that is provided in a cab of the work machine and operated by an operator for driving a work device; a hydraulic brake device that generates a braking force according to operation of a brake pedal; a hydraulic lock unit that hydraulically locks the hydraulic brake device to cause the hydraulic brake device to be continuously operated; a work device drivable state judging unit that judges whether or not the work device is in a work device drivable state in which the work device can be driven; and a park brake control unit that brings the park braking device into operation when the hydraulic lock unit hydraulically locks the hydraulic brake device and the work device drivable state judging unit judges that the work device drivable state has not been established. | 12-18-2014 |