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7617902 |
Biasing drive torque to a secondary axle in a motor vehicle powertrain
A method for transmitting power to the wheels of a motor vehicle includes driveably connecting an output of a transmission to a first set of wheels, varying the magnitude of torque transmitted to...
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7613559 |
Method for automatically actuating longitudinal blocks in four wheel drive vehicles, in particular in working machines and service vehicles
A method for automatically actuating longitudinal blocks in four-wheel vehicles, particularly in working machines and service vehicles. The longitudinal blocks are always open when driving...
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7607506 |
Driving force distribution control apparatus of vehicle
A driving force distribution control unit 60 calculates front/rear driving force distribution cooperative control addition yaw moment by multiplying front/rear driving force distribution control...
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7600598 |
Biasing drive torque to a secondary axle in a motor vehicle powertrain
A method for transmitting power to the wheels of a motor vehicle includes driveably connecting an output of a transmission to a first set of wheels, varying the magnitude of torque transmitted to...
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7597168 |
Low engine speed steering performance
A hydraulic system for a work vehicle including a manifold assembly configured to prioritize hydraulic fluid flow to priority functions over a wide range of engine speeds.
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7593799 |
Torque transmission device
A torque transfer device in a motor vehicle, used for variable transfer of torque from a first shaft associated with a first wheel pair to a second shaft associated with a second wheel pair. A...
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7588112 |
Bi-directional clutch and vehicle with it
A bi-directional clutch to be equipped on a vehicle, which is selectively automatically clutched off for putting the vehicle into a two-wheel drive mode or clutched on for putting the vehicle into...
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7581612 |
Drive force distribution device and method for distributing drive force
An IG-off-timer measures the time t_off from when an engine is stopped, or an ignition is turned off. An ECU sequentially memorizes an estimated temperature of each of heat generating portions as a...
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7578762 |
Four-wheel drive vehicle transmission
A four-wheel-drive vehicle transmission ( 1 ) having a drive torque input shaft ( 8 ) rotated about a first axis of rotation (A); a front output shaft ( 10 ); a rear output shaft ( 12 ); an...
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7562947 |
Apparatus for controlling driving force of vehicle
An apparatus for controlling the driving force of a vehicle is capable of using brakes to limit a differential operation, securing sufficient torque, and suppressing the heating and wearing of the...
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7553250 |
Drive train of an all-wheel drive vehicle
The drive train of an all-wheel drive vehicle comprises a transfer case that is connected to the motor block, a driven front axle, a driven rear axle, drive shafts and a control device. To vary the...
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7549497 |
Four-wheel drive vehicle running normally and with object towed thereby
A vehicle includes a wheel speed sensor sensing a vehicle speed V, a 2WD/4WD switch operative to input an instruction to switch between a two-wheel driving state and a four-wheel driving state, a...
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7533754 |
Hybrid motor vehicle driveline
A hybrid motor vehicle ( 10 ) has a four wheel drive arrangement in which the front wheels ( 12 and 13 ) are driven by the engine ( 11 ) in two wheel drive mode and all four wheels ( 12 - 15 ) in...
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7530421 |
Vehicle drive power distribution device
A transfer mechanism distributes drive power from a drive power source of a motor vehicle to left and right front wheels and left and right rear wheels of the vehicle. A rear differential mechanism...
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7510041 |
Drive axle assembly with torque vectoring drive mechanism
A drive axle assembly includes a pair of axleshafts connected to a pair of wheels, and a drive mechanism for selectively coupling a driven input shaft to one or both of the axleshafts. The drive...
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7507178 |
Transmission unit
A transmission unit ( 7 ) with a housing ( 9 ), a transmission input shaft ( 10 ) and three transmission output shafts ( 11, 12, 13 ), at least two planetary gearsets ( 14, 15 ) and a device ( 16 )...
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7503416 |
Torque distributing drive mechanism with limited slip
A drive axle assembly includes first and second axleshafts and a drive mechanism coupling a driven input shaft to the axleshafts. The drive mechanism includes a differential assembly, a planetary...
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7497297 |
On demand vehicle drive system
An on demand vehicle drive system monitors vehicle performance and operating conditions and controls torque delivery to the vehicle wheels. The system includes a plurality of speed and position...
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7493982 |
Control device for a four-wheel drive vehicle
A control device for a four-wheel drive vehicle, including: a yaw moment control unit for selecting and applying to a wheel based on a driving state a braking force to generate vehicular yaw...
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7467678 |
Hybrid four-wheel-drive
A four-wheel drive system for a hybrid vehicle includes at least two motor-generators and a single engine connected to a differential having multiple degrees of freedom. In some embodiments, by...
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7464779 |
All-wheel drive motor vehicle
An all-wheel drive motor vehicle having at least two wheel axles and comprising an electrical or hydraulic drive unit having a plurality of electric or hydraulic motors connected to an electrical...
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7458437 |
Arrangement in a four-wheel drive motor vehicle
In a four-wheel drive motor vehicle with a primary drive axle and a secondary drive axle, at least one secondary drive axle coupling of the limited slip type is provided in the powertrain between...
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7434646 |
On-demand four wheel drive system
An on-demand four wheel drive system for a vehicle having a front drive train, a rear drive train, and a transfer case. The system includes a sensor system operable to detect the speed of the front...
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7421328 |
Vehicle slip state determination system and traveling state control system
A vehicle slip state determination system serves to calculate an estimated vehicle speed VB, an estimated vehicle deceleration in the vehicle speed DVB, and each of wheel speed differences between...
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7399250 |
All-wheel drive train
In an all-wheel drive train for a motor vehicle wherein the drive torque of the engine of the motor vehicle is transmitted from the transmission output shaft partially to the rear axle and...
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7392875 |
Four-wheel drive system
To provide a four-wheel drive system which improves running performance of an automotive vehicle by inhibiting a driving torque from becoming insufficient upon occurrence of a slip. An R slip...
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7386383 |
Differential limiting control apparatus for a vehicle and the method thereof
A differential limiting control apparatus for a vehicle has: clutch unit interposed between one rotational shaft and the other rotational shaft for variably transmitting a driving force between the...
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7386382 |
Steering compensated speed override for vehicle drive system
A method of controlling a vehicle drive system is provided for a vehicle having an internal combustion engine, free-wheeling steerable front wheels, driven rear wheels, an infinitely variable...
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7384366 |
Transfer case with torque synchronizer clutching
The transfer case reduction gearset is often never used for its original intended function, that is, to provide an additional speed reduction (torque amplification) ratio for the powertrain. This...
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7384357 |
Speed reduction gear train with planetary differential for electric motor axle drive
An electric drive unit for a vehicle includes an electric motor, two output shafts, a first speed reduction planetary gearset driven by the motor, a second speed reduction gearset driven by an...
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7383910 |
Drive force control method for four-wheel drive vehicle
A drive force control method for a four-wheel drive vehicle having front wheels as main drive wheels always connected to a driving source, rear wheels as auxiliary drive wheels whose drive torque...
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7357208 |
Control system for an at least temporarily four wheel-driven motor vehicle
A control unit of an at least temporarily four wheel-driven motor vehicle is provided. The control unit is arranged such that a displacement path for an actuator that actuates a transmission clutch...
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7343998 |
All-terrain vehicle with subtransmission detachably mounted to the engine
An all-terrain vehicle (ATV) has a subtransmission detachably fastened to an engine casing. The engine crankshaft includes a drive pulley connected via a belt to a driven pulley in the...
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7326144 |
Vehicle transmission systems
A vehicle transmission system includes an input shaft connected to a differential mechanism, which has two output shafts. The two output shafts carry first and second coaxially mounted sun wheels,...
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7325640 |
Power transmission system for four-wheel drive vehicle
A power transmission system for a four-wheel drive vehicle comprises a power transmission mechanism provided in a vehicle arranged such that power is always transmitted to one of two pairs of...
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7316304 |
Four-wheel drive center disconnect electric actuator
A four-wheel drive center disconnect electric actuator is provided. The actuator includes a one-way motor that actuates a cam mechanism for causing engagement and disengagement of the center...
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7315776 |
Control device for an at least part-time four-wheel-drive motor vehicle
In the case of a control device for an at least part-time four-wheel-driven motor vehicle, having a control unit which can variably distribute the driving torque of a drive unit to primary driving...
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7294083 |
Torque vectoring axle assembly
A drive axle assembly includes first and second axleshafts connected to a pair of wheels and a drive mechanism operable to selectively couple a driven input shaft to one or both of the axleshafts....
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7290633 |
Steering responsive wheel drive system
A vehicle drive speed control system is provided for a vehicle having driven rear wheels, driven steerable front wheels, a powertrain for driving the front and rear wheels at controllable speeds. A...
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7264078 |
Calibration method for inter-axle differential control system
A vehicle includes steerable front wheels, an interaxle differential for transmitting torque from an engine to the front wheels and to rear wheels. The differential includes a controllable clutch...
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7258187 |
Torque vectoring axle
A drive axle assembly includes a pair of axleshafts connected to a pair of wheels, and a drive mechanism for selectively coupling a driven input shaft to one or both of the axleshafts. The drive...
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7258185 |
Drive power transmission equipment
Front and rear wheels Tf, Tr of a motor vehicle driven by an engine 10 are connected through a differential control device 15 which is capable of varying the torque to transmit. When the...
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7254471 |
Transfer case having selectable driving modes suited to motor vehicle load and road conditions
A motor vehicle powertrain includes a transmission producing multiple speed ratios, and a transfer case including a second input driveably connected to the transmission output, a second output...
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7252173 |
Differential gear for a vehicle
A differential ( 2 ) for a vehicle is proposed for the apportionment of a drive torque conducted via a drive shaft on a crown gear ( 7 ). The drive torque is engendered by a motor ( 1 ) onto two...
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7248957 |
Control device for an at least partially four-wheel-driven motor vehicle
In the case of a control device for an at least temporarily four-wheel-driven motor vehicle, having a control unit which can variably distribute the driving torque of a drive unit as a function of...
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7201266 |
Hydraulic clutch actuation system
A torque transfer mechanism for controlling the magnitude of a clutch engagement force exerted on a clutch pack that is operably disposed between a first rotary member and a second rotary member...
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7150694 |
Power take-off unit for four-wheel drive vehicle
A full-time power take-off unit is equipped with a dual-mode bi-directional overrunning clutch and a shift mechanism to establish all-wheel drive and part-time four-wheel drive modes. Further, the...
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7127343 |
Slip control device of four-wheel-drive vehicle
A temporary indicated torque is obtained by taking a conventional dead zone area for a first slip control area, and the value proportional to the slip quantity for a maximum value, this temporary...
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7124850 |
Four wheel drive assembly and a method for utilizing the same
A four wheel drive assembly 10 including a torque transfer assembly 60 which operates under the control of the controller 62 and which receives and selectively transfers a certain desired...
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7101304 |
Electric shift transfer case
The present invention provides a shift mechanism disposed in a housing for providing operable communication between a shift actuator and a shift sleeve. The shift mechanism generally includes a...
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