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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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7600599 |
Multimodal vehicle traction system
This invention relates to multiple driven axle vehicles, and particularly to all-terrain vehicles equipped for rear wheel drive, four wheel drive, and on-demand front wheel drive. The invention is...
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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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7568568 |
Hydraulic coupling with disconnect clutch
A power transfer assembly for use in a motor vehicle and having a hydraulic coupling operable to transfer drive torque to a driveline in response to slip. The hydraulic coupling includes a transfer...
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7553255 |
Locker clutch control for a differential mechanism
A motor vehicle driveline that can transmit power in a 4×4 mode includes two front wheels, a rear drive shaft, a differential mechanism for transmitting power to two rear axle shafts connected...
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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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7540820 |
Two-speed transfer case with ballramp clutch actuator
A transfer case is provided with a range unit, an interaxle differential, a clutch assembly and a power-operated actuation mechanism. The range unit includes a planetary gearset driven by an input...
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7527133 |
Power-operated clutch actuator for torque couplings
A torque transfer mechanism is provided for controlling the magnitude of a clutch engagement force exerted on a multi-plate clutch assembly that is operably disposed between a first rotary and a...
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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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7506559 |
Shift mechanism for power transmission assemblies
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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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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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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7434647 |
Driving force control apparatus for four-wheel drive vehicle
A driving force control apparatus for a four-wheel drive vehicle is provided for stably launching the vehicle irrespective of whichever condition of a road surface and whether or not a road is...
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7421324 |
Drive system switching control method
In a drive system switching control method of an automotive four-wheeled vehicle for switching two drive systems comprising a two-wheel drive and a four-wheel drive. The method has a step of...
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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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7374012 |
Operation control system for small-sized vehicle
An operation control system for a small-sized vehicle is capable of reducing an electric power consumption of a battery used for a power steering apparatus. The operation control system includes a...
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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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7290634 |
Vehicle differential control
A differential control system for the center and rear differentials of a four-wheel-drive vehicle comprises a controller ( 28 ) which receives signals input from a number of sensors including ride...
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7291083 |
Inter-axle differential assembly
An inter-axle differential assembly includes a forward side gear and a rear side gear that are supported by an input shaft. The forward and rear side gears are in meshing engagement with a...
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7281617 |
Active torque coupling with hydraulically-actuated rotary clutch actuator
A torque transfer mechanism having a multi-plate friction clutch connecting a pair of rotary members and an electrohydraulic clutch system for controlling engagement of the friction clutch. The...
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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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7258213 |
Power transmission devices having torque transfer coupling with power-operated clutch actuator
A torque transfer mechanism is provided for controlling the magnitude of a clutch engagement force exerted on a multi-plate clutch assembly that is operably disposed between a first rotary and a...
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7229139 |
Control system for brake-steer assisted parking and method therefor
A system and method of controlling an automotive vehicle includes determining a steering wheel angle, determining a steering wheel direction, determining a steering wheel angular rate and applying...
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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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7147094 |
Drive power transmission control device
A drive power transmission control device is provided with an electromagnetic drive power transmission device and an ECU for controlling the application of electric current to an electromagnetic...
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7111717 |
Power transmission apparatus of four wheel drive apparatus
A power transmission apparatus T of a four wheel drive vehicle is provided with a multiple disc clutch C engaged in accordance with a difference between rotational speeds of a front wheel Wf and a...
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7111716 |
Power-operated clutch actuator for torque transfer mechanisms
A torque transfer mechanism is provided for controlling the magnitude of a clutch engagement force exerted on a multi-plate clutch assembly that is operably disposed between a first rotary and a...
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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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7083539 |
Torque distributing drive 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 the axleshafts. The drive...
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7083030 |
Torque transfer coupling with magnetorheological clutch actuator
A torque transfer mechanism is provided for controlling the magnitude of a clutch engagement force exerted on a multi-plate clutch assembly that is operably disposed between a first rotary and a...
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7080707 |
Torque vectoring drive axle assembly
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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7059992 |
Power transfer assembly for four-wheel drive vehicle
A power transfer assembly for a four-wheel drive vehicle includes first and second output shafts and a drive mechanism operable to selectively transfer drive torque from a driven input shaft to the...
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7044880 |
Torque distributing differential 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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7017702 |
Transport engine and drive arrangement
A parallel engine and transmission drive arrangement with application to both land and marine vehicles reduces the large moment arm and moment about the rear axle in the case of land vehicles, and...
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6991079 |
Power transfer device with hydraulically-actuated clutch assembly
A torque transfer mechanism having a transfer clutch connecting a pair of rotary members and a electrohydraulic clutch actuator for controlling engagement of the transfer clutch. The clutch...
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6991080 |
Power transmission devices with active torque couplings
A torque transfer mechanism having a multi-plate friction clutch connecting a pair of rotary members and a electrohydraulic clutch actuator for controlling engagement of the friction clutch. The...
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6988602 |
Torque transfer coupling with magnetorheological clutch actuator
A torque transfer mechanism is provided for controlling the magnitude of a clutch engagement force exerted on a multi-plate clutch assembly that is operably disposed between a first rotary and a...
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6971494 |
Torque transfer coupling with friction clutch and hydraulic clutch actuator
A hydraulic coupling having a multi-plate friction clutch assembly operably connecting a pair of rotary members and a hydramechanical clutch actuator for automatically controlling engagement of the...
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6966396 |
Electronically-controlled rear drive module for all-wheel drive system
A drive axle assembly for an all-wheel drive vehicle includes an adaptively controlled first hydraulic coupling for providing front-to-rear torque transfer control to a first wheel and an...
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6948604 |
Hydraulically-actuated pilot clutch type clutch assembly
A torque transfer mechanism having a transfer clutch connecting a pair of rotary members and a electrohydraulic clutch actuator for controlling engagement of the transfer clutch. The clutch...
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6945375 |
Torque transfer device having an electric motor/brake actuator and friction clutch
A torque transfer mechanism is provided for controlling the magnitude of a clutch engagement force exerted on a multi-plate clutch assembly that is operably disposed between a first rotary and a...
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6942055 |
Electronically-controlled rear module for all-wheel drive system
A drive axle assembly for an all-wheel drive vehicle includes an adaptively controlled first hydraulic coupling for providing front-to-rear torque transfer control to a first wheel and an...
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6938748 |
Wedge fork clutch actuator for driveline clutches
A torque transfer mechanism is provided for controlling the magnitude of a clutch engagement force exerted on a multi-plate clutch assembly that is operably disposed between a first rotary and a...
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6918851 |
Concentric shift system for engaging an interaxle differential lock
An interaxle differential is provided which includes a side gear, a clutch gear torsionally locked on a first input shaft and axially slidably mounted thereon and an annular piston mounted in a...
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6878085 |
Power distribution control apparatus and control method
In a differential limiting torque control section, a target differential rotation speed between front and rear drive shafts is established according to a dial position inputted by a driver of a...
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6862953 |
Modular bi-directional clutch assembly
A controllable, multi-mode, bi-directional overrunning clutch assembly and a shift system are adapted for use in a power transmission device. The clutch assembly includes a first ring journalled on...
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6851537 |
Worm driven ball screw actuator for traction clutches
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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6820712 |
Differential locking control system
A vehicle has a lockable differential. The lockable differential generally comprises an actuator and a locking mechanism. The vehicle also has a motor. The actuator, the motor or both are...
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6817434 |
Active hydraulically actuated on-demand wheel end assembly
The vehicular axle assembly includes an input shaft, a drive gear assembly connecting the input shaft to a pair of output shafts, pair of opposite wheel ends mounted to the outboard ends of the...
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