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7607505 |
Energy storage type of differential mixed power distribution system
An energy storage type of differential mixed power distribution system to drive an all wheel driving carrier; a revolution output end of an internal combustion engine (or any other revolution power...
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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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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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7594560 |
Four-wheel drive vehicle
A vehicle includes a sensor sensing external temperature, a 2WD/4WD switch operated to input an instruction to switch a two-wheel drive state and a four-wheel drive state, a transfer switching...
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7559397 |
Energy storage type of dual-drive coupled power distribution system
An energy storage type of dual-drive coupled power distribution system adapted to an all wheel driving (AWD) transportation means having a revolution output end from an internal combustion engine...
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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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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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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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7490690 |
Control device for front-and-rear wheel drive vehicle
A control device is provided for electrically controlling a drive power transmission device arranged on a driving power transmission path of a front-and rear wheel drive vehicle thereby to switch...
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7480553 |
Driving dynamic control or regulating system and method for a two-track, two-axle motor vehicle
A system and method are provided for controlling or automatically controlling the driving dynamics of a two-track, two-axle motor vehicle having only one driven axle, which, for the rolling moment...
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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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7422545 |
All-terrain vehicle reverse gear protection
A reverse system for an all-terrain vehicle (ATV) having an engine and an engine drive shaft, a reverse activator, an engine speed limiter, and an override switch. The reverse activator is coupled...
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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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7395891 |
Engine torque truncation method for a four-wheel drive vehicle
A four wheel drive powertrain control for an automotive vehicle is disclosed. It includes a torque transfer case that distributes power from an engine-powered transfer case mainshaft to a secondary...
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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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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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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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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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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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7309301 |
Transaxle having a differential mechanism and on-demand transfer clutch
A powertrain for transmitting power to the drive wheels of a vehicle includes a transaxle case containing a transaxle drive mechanism for producing variable ratios of a speed of its output and a...
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7271555 |
Vehicle electrical assist apparatus and kit for same
Apparatus for installation in new motor vehicles or for retrofitting into existing motor vehicles, including an electric motor coupled to a drive shaft and a controller for the motor. The existing...
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7255193 |
Speed equalizing linkage design for dual hydrostatic transmissions
An HST propel system includes first and second pumps having displacements variable in response to movement of first ( 31 ) and second ( 33 ) control shafts, respectively; and a linkage arrangement...
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7231848 |
Transfer case with dual chain transfer mechanism
A transfer case for use in a motor vehicle to selectively transfer drive torque from a powertrain to first and second pairs of wheels. The transfer case includes an input shaft driven by the...
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7224142 |
Battery load power detecting system
A battery load power detecting system includes a generator current sensor which detects a current supplied from a generator to at least one of a battery and a load group including a steering...
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7220209 |
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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7197386 |
Control system for a vehicle with at least part-time four-wheel drive
In the case of a control system for a vehicle with at least part-time four-wheel drive, having a control unit which detects or determines quantities proportional to the wheel speeds of all wheels...
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7152704 |
Four-wheel drive work vehicle
A four-wheel drive work vehicle includes an engine, a pair of right and left steerable wheels rotatably driven by receiving power from the engine via a differential mechanism, a pair of right and...
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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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7143855 |
Method for controlling a shiftable clutch in the drive train of a 4-wheel drive motor vehicle
A method of controlling a shiftable clutch in a drive train between a front axle and a rear axle of a motor vehicle with a four-wheel drive is provided. One axle is driven directly and the other...
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7111702 |
Steering angle control of independent rear clutches in a four-wheel drive vehicle
A method and apparatus for a four-wheel drive motor vehicle provides improved cornering by disengaging drive torque to the inside rear wheel during significant steering maneuvers. The apparatus...
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7109857 |
Brake light warning system for safety helmets and method of operation
A brake light warning system for safety helmets includes a transmitter module adapted for mounting to a vehicle, such as a motorcycle, and a receiver module adapted for mounting to a safety helmet....
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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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7096990 |
Double disconnect assembly for multi-axle vehicles
An axle disconnect system is provided whereby axles of a tandem or multi-axle vehicle may be easily and quickly engaged and disengaged as required and whereby the ring gear and differential gears...
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7093681 |
Drive train assembly for use in powered vehicles or trailers
A drive train assembly for use in powered vehicles or trailers having at least one axle of driving wheels. The assembly includes a coupling mechanism coupling the engine of the vehicle and the...
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7062984 |
Vehicle powertrain with two-wheel and four-wheel drive ratios
A vehicle powertrain incorporates a planetary gearset which is coupled with a front wheel drive mechanism and a rear wheel drive mechanism. The planetary gearset is controlled by two...
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7055667 |
Vacuum actuated wheel hub
An interlock mechanism is provided for a wheel end disconnect device. The interlock mechanism is activated by negative pressure for engaging and disengaging a wheel hub from an axle shaft. Vacuum...
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7048084 |
Power distribution control apparatus of four-wheel drive vehicle
A CPU computes a throttle opening degree increasing speed Vθh and a steering wheel angular velocity Vθ based on a throttle opening degree θh and a steering wheel angle θ. Based on the throttle...
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7040472 |
Transfer case with controllable clutch
A transfer case ( 1 ) with controllable clutch ( 5 ) for a motor vehicle, especially for a motor vehicle with part-time four-wheel drive, for distributing a driving torque coming in via a drive...
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7040186 |
Parallel manual transmission for four-wheel drive and parallel manual transmission for transverse installation in a front-wheel drive vehicle
A parallel manual transmission for a four-wheel drive is provided and includes two input shafts, each of which can be non-rotatably coupled via its own clutch to a shaft that is powered by a drive...
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7032699 |
Drive transmission apparatus for vehicle and a four-wheel drive vehicle
Providing a drive transmission apparatus for vehicle capable of ensuring the adaptability of an electric motor to a high-temperature environment and increasing the degree of freedom for apparatus...
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RE39054 |
Vehicle drive system including drive mode-shifting mechanism for shifting between two-wheel drive and four-wheel drive
A vehicle drive system includes a compact drive mode-shifting mechanism that is mounted in the final drive gearset of a vehicle. The drive mode-shifting mechanism includes a first shaft, a second...
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7021441 |
Distributor gear with adjustable coupling
A distributor gear ( 1 ) with an adjustable coupling device ( 5 ) for a vehicle, in particular for a vehicle with a shiftable all-wheel drive is described for the distribution of an incoming drive...
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6974400 |
Transfer case with a tri-mode bi-directional clutch assembly
An on-demand two-speed transfer case is equipped with a planetary gearset assembly and a range shift mechanism to provide high-range and low-range drive connections. The transfer case is also...
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6964315 |
On-demand transfer case
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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6962226 |
Vehicular two-wheel drive and four-wheel drive switching system
To provide a vehicular two-wheel drive and four-wheel drive switching system the power consumption of which can be reduced. A vehicular two-wheel drive and four-wheel drive switching system is...
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6949044 |
Power divider for motor vehicles comprising an off-road speed gear
A transfer case for motor vehicles with off-the-road gear comprises a casing, an input shaft, a first output shaft, coaxial with the latter, a second output shaft, offset therefrom, a...
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6945895 |
Differential gear mechanism
A differential gear mechanism includes a rotatable case driven by torque from an engine, a differential gear set housed in the case for differential distribution of the torque to a pair of output...
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