Class / Patent application number | Description | Number of patent applications / Date published |
180248000 | With differential means for driving two wheel sets at dissimilar speeds | 26 |
20080230295 | IDLE-ABLE POWER TRANSFER UNIT - A vehicle driveline comprising a primary drive system including at least one primary drive wheel and an auxiliary drive system including at least one auxiliary drive wheel is disclosed. The vehicle driveline may further comprise a system for idling the auxiliary drive system. The system may include at least one wheel disconnect device for selectively connecting and disconnecting the auxiliary drive wheel from the auxiliary drive system and a power transfer unit for selectively engaging and disengaging the auxiliary drive system from the primary drive system. The power transfer unit may include a multi-plate clutch in series with a dog clutch. | 09-25-2008 |
20080236927 | Driving force transmission system for four wheel drive vehicle - Power of an engine is divided to be transmitted to a power transmission path to front wheels and a power transmission path to rear wheels by a transfer mechanism where the power has just passed through a transmission so as to be transmitted to front wheels and rear wheels. In addition, a torque reduction and transmission joint is provided on the power transmission path to the rear wheels, so that the rotational drive torque to the rear wheels is reduced to be transmitted thereto. Additionally, constant velocity joints which are provided on the power transmission path to the rear wheels are configured to have a smaller torque transmission capacity and a smaller size than those of constant velocity joints which are provided on the power transmission path to the front wheels. | 10-02-2008 |
20080245596 | VEHICLE LIMITED SLIP DIFFERENTIAL - A limited slip differential for a vehicle includes an engine, a transmission, a differential mechanism operable to distribute an output from the engine which is transmitted by way of the transmission to one of a pair of left and right front wheels and a pair of left and right rear wheels, a transfer mechanism which is disposed closer to a center of the vehicle in the left-right direction than the differential mechanism, and a distribution controller operable to control amounts of distributed outputs. The differential mechanism is disposed in a first side of the transfer mechanism. The distribution controller is disposed in a second side of the transfer mechanism which is opposite to the first side, and includes a clutch mechanism operable to limit a differential action between the one of the drive shafts and the output shaft. | 10-09-2008 |
20080257630 | Engine arrangement structure of saddle-ride type vehicle - An engine arrangement structure of a saddle-ride type vehicle includes an engine having a crankcase and a cylinder part overhung upwardly from the crankcase. An alternating current generator is provided at one end of the crankshaft with a power transmission system member being provided at the other end thereof. The alternating current generator and the power transmission system member are overhung ahead of and behind the engine relative to the engine cylinder part, respectively. A width by which the power transmission system member is overhung is larger than that by which the alternating current generator is overhung. The alternating current generator of the engine is arranged so as to be directed to the front side of the vehicle body and the power transmission system member is arranged so as to be directed to the rear side of the vehicle body. | 10-23-2008 |
20080289894 | Control Apparatus and Control Method for Vehicle - A distribution ratio determining unit determines the distribution ratio for distributing a required torque based on a static load distribution ratio, when the sign of the required torque is negative. The distribution ratio determining unit determines the distribution ratio based on a dynamic load distribution ratio, when the sign of the required torque is positive. The distribution ratio determining unit determines the distribution ratio based on the static load distribution ratio and the dynamic load distribution ratio, when the sign of the required torque changes. Thus, even when the sign of the required torque changes, it is possible to prevent the driving forces for a plurality of wheels of a vehicle from changing discontinuously. | 11-27-2008 |
20090045001 | Method for calibrating of an actuator of an all-wheel drive clutch - A method for the readjustment of an actuator of an all-wheel drive clutch of a motor vehicle that includes determining a clutch slip value corresponding to a difference between the speed of a primary axle and the speed of a secondary axle; determining a reference secondary axle torque corresponding to the proportion of a driving torque which is transmitted to the secondary axle and for which a clutch slip value of substantially zero is expected; and comparing the clutch slip value with a threshold value and comparing a desired clutch torque with the reference secondary axle torque. A desired clutch torque/control signal relationship for the clutch actuator is changed in dependence on the result of these comparisons. | 02-19-2009 |
20090120706 | Power Takeoff for All-Wheel-Drive Systems - A system for transmitting rotary power to the wheels of a motor vehicle includes an input, a planetary final drive connected driveably to the input and including a first output that is driven at a speed that is slower than a speed of the input, and a inter-wheel planetary differential driveably connected to the first output for splitting torque carried by the first output between a second output connected driveably to a first wheel of a first wheel set and a third output connected driveably to a second wheel of the first wheel set. | 05-14-2009 |
20090120707 | Vehicle tack-in prevention control device - In a driving-force distribution control unit, a first transfer-torque calculation unit calculates an input-torque sensitive transfer torque, a second transfer-torque calculation unit calculates a steering-angle/yaw-rate sensitive transfer torque, and a third transfer-torque calculation unit calculates a tack-in preventing transfer torque. In the third transfer-torque calculation unit, tack-in prevention control is performed during turning at a high speed not only when the accelerator opening is substantially reduced and the current accelerator opening becomes small, but also when the torque amount to be reduced by a traction control unit is more than a preset value. Further, when at least one of a side-slip prevention control unit and an ABS is started, tack-in prevention control is prohibited. | 05-14-2009 |
20090173563 | DRIVETRAIN FOR VEHICLES WITH ALL-WHEEL DRIVE AND A TRANSMISSION ARRANGED ALONG THE TRAVEL DIRECTION - A drivetrain for an all-wheel drive motor vehicle which includes a longitudinally arranged central transmission, a transfer box, a Cardan shaft and two drive axles arranged normal to the direction of travel. The transfer box includes a central differential, an input and two output shafts. The input shaft of the central transmission communicates with an engine crankshaft. The transfer box input shaft is connected to an output shaft and an input element of the central differential. The first output shaft of the transfer box is connected to a first output element of the central differential and the first drive axle. The second outputt shaft of the transfer box is actively connected to a second output element of the central differential and to the second drive axle. The two output shafts of the transfer box are coaxially arranged at an angle to the output | 07-09-2009 |
20100038164 | MOTOR VEHICLE WITH DISCONNECTABLE ALL-WHEEL DRIVE SYSTEM - A vehicle with primary and secondary drivelines and a power take-off unit (PTU). The primary driveline has a first differential that is configured to distribute power to a first set of wheels. The PTU has a PTU input, a PTU output and a synchronizer for selectively de-coupling the PTU output from the PTU input. The secondary driveline is configured to distribute power to a second set of wheels and has a propshaft, a second differential, a pair of half-shafts and at least one torque transfer device (TTD). The propshaft transmits rotary power between the PTU output and an input of the second differential. The half-shafts are rotatably coupled to an output of the second differential and are configured to transmit rotary power to the second set of wheels. The at least one TTD is configured to selectively inhibit torque transmission through the second differential to the second set of wheels. | 02-18-2010 |
20100170737 | Propulsion System for All-Wheel Drive Motor Vehicles - The invention relates to a propulsion system for all-wheel drive motor vehicles, having a device for propulsion distribution to the front and the rear differential which transmit the drive output to the wheels assigned at the time, and with a device for coupled, variable distribution of the propulsion forces in the transverse and longitudinal directions of the vehicle depending on the operating situation of the vehicle for influencing the driving behavior, especially for improving the driving agility and driving stability. In the process the rear differential ( | 07-08-2010 |
20110147109 | DRIVE TRAIN ARRANGEMENT FOR A VEHICLE - A drive train arrangement for a vehicle comprising a main transmission and a transfer box which are both housed within a transmission housing. The transfer box comprises a drive output which is connected to a rear axle differential transmission and connectable, by a torque transmission element and a connecting shaft, to a front axle differential transmission. The connecting shaft is arranged at a predetermined angle relative to the drive output shaft of the main transmission. The end of the connecting shaft, facing toward the front axle differential transmission, is actively connected to the front axle differential transmission. The front axle differential transmission is fixed to the vehicle by at least one adaptor device allowing the front axle differential transmission to be adapted to a variety of arrangement positions along the rotation axis of the connection shaft. | 06-23-2011 |
20110308875 | MOTOR VEHICLE WITH DISCONNECTABLE ALL-WHEEL DRIVE SYSTEM - A vehicle with a primary driveline that is configured to distribute rotary power to a first set of vehicle wheels and a power transmitting device that can be selectively operated to transmit rotary power to a secondary driveline. The power transmitting device has an input member, which is driven by the primary driveline, and an output member that is selectively coupled to the input member to receive rotary power therefrom. | 12-22-2011 |
20120024614 | DRIVETRAIN FOR A VEHICLE AND METHOD OF CONTROLLING SAME - A vehicle drivetrain can include a primary pair of drive wheels and a secondary pair of drive wheels and can be selectively switched between a two-wheel drive mode and a four-wheel drive mode. When the drivetrain is in the two-wheel drive mode, the secondary pair of wheels are disconnected from the prime mover and the multi-ratio transmission. Also, when the drivetrain is in the two-wheel drive mode, the components used to drive the secondary pair of drive wheels can be rotationally isolated from each of the secondary pair of wheels, the prime mover and the multi-ratio transmission. | 02-02-2012 |
20130186703 | TRACTOR - The present invention provides a tractor which is configured such that front wheel axles are disposed above upper portions of front wheels so that the front wheels are prevented from being impeded by the front wheel axles even when the front wheels are steered to maximum angles in a clockwise or counterclockwise direction and turned to an angle over or approximate to a right angle with respect to the longitudinal direction of the tractor, whereby the tractor can be turned in place by manipulating a steering wheel. | 07-25-2013 |
20140216840 | DRIVELINE FOR A VEHICLE, VEHICLE WITH SUCH A DRIVELINE AND METHOD OF CONTROLLING A DRIVELINE OF A VEHICLE - A driveline for a vehicle such that a first group of one or more wheels and not a second group may be driven by prime mover means when the driveline is in a first mode of operation and the second group of one or more wheels may additionally be driven by the prime mover means when the driveline is in a second mode of operation, the driveline comprising: an auxiliary driveshaft; a power transfer unit (PTU) operable by means of PTU actuator means releasably to drivably couple the auxiliary driveshaft to the prime mover means; and a releasable drive unit operable by means of drive unit actuator means releasably to drivably couple the auxiliary driveshaft to the second group of one or more wheels, the PTU actuator means and drive unit actuator means each being powered by means of a pressurised fluid medium, the fluid medium being pressurised by a common pressurisation means. | 08-07-2014 |
20140332301 | DRIVE TRAIN OF AN ALL-ELECTRICALLY DRIVABLE MOTOR VEHICLE WITH TWO ELECTRIC MACHINES - A drive train ( | 11-13-2014 |
180249000 | And means for locking out the differential means | 9 |
20080196962 | Electrohydraulic Torque Transfer Device and Temperature Control System - A power transmission device includes a friction clutch operable to selectively transfer torque between an input member and an output member. An actuator is operable to provide an actuating force to the friction clutch. The actuator includes an electric motor having an output shaft drivingly coupled to a pump. The pump is operable to provide pressurized fluid to a piston acting on the friction clutch. A controller that is switched on and off in response to an ignition signal estimates the temperature of the friction clutch at the time of being switched on based on a time the controller has been off. A method of estimating a temperature of the friction clutch is also disclosed. | 08-21-2008 |
20080230296 | Front to Rear Torque Vectoring Axle with Overspaced Capability for Vehicle Dynamic Control Systems - A torque bias coupling ( | 09-25-2008 |
20090127014 | Differential Limiting Control Apparatus For Four-Wheel Drive Vehicle - Restraining torque T | 05-21-2009 |
20090229905 | Driving force transmitting device for four-wheel drive vehicle - A driving force transmission device for four-wheel-drive vehicle based on the two-wheel drive of front wheels is provided. In the case of the two-wheel drive of front wheels, a multi-disc clutch mechanism for controlling the driving force distribution to a rear wheel output shaft, and a disconnection/connection mechanism for disconnecting and connecting a rear wheel differential and a right rear wheel drive shaft are provided, and in the two-wheel drive of front wheels, the dragging torque of the multi-disc clutch mechanism is made smaller than the friction torque of a rear wheel driving force transmission section, and the front wheel differential and the right rear wheel drive shaft are disconnected by the disconnection/connection mechanism, thereby the rotation of the rear wheel driving force transmission section is stopped. | 09-17-2009 |
20100038165 | VEHICULAR ACTUATOR ARRANGEMENT AND IMPLEMENTATIONS - A vehicle drive arrangement is controlled with an actuator arrangement. According to an example embodiment, an actuator arrangement includes a rotatable gear having pins thereon that are applied to a latch and rocker arm to selectively engage and lock a vehicle drive system. In some applications, gear is rotated to apply a first pin to move the latch for selective engagement of the vehicle drive system, and to apply the second pin for selective locking of the engagement, during which selective locking the rotation of the first pin does not cause movement of the latch. Other embodiments are directed to vehicle drive systems and vehicles, such as all-terrain vehicles, employing drive systems and an actuator. | 02-18-2010 |
20110017540 | DIFFERENTIAL ASSEMBLY INCLUDING DIFFERENTIAL LOCK AND BLOCKING MEMBER - A differential assembly includes an axle, a differential, a differential lock, a blocking member, and a pump. The differential is coupled with the axle and configured to facilitate operation of the axle at an axle speed. The differential lock is associated with the differential and movable between a locked position and an unlocked position. The blocking member is associated with the differential lock and is movable between a blocking position and a non-blocking position. When the blocking member is in the blocking position, the differential lock is inhibited from moving to the locked position. The pump includes an outlet in fluid communication with the blocking member. The pump is operably coupled with the axle and is configured to facilitate movement of the blocking member into the blocking position when the axle speed is above a threshold speed. Vehicles including a differential assembly are also provided. | 01-27-2011 |
20130220722 | FOUR-WHEEL-DRIVE VEHICLE AND CONTROL UNIT FOR FOUR-WHEEL-DRIVE VEHICLE - A four-wheel-drive vehicle includes a dog clutch provided between a propeller shaft and an engine, a torque coupling provided between a rear differential and rear wheels, and an ECU that controls the dog clutch and the torque coupling. When a drive mode is switched from a two-wheel-drive mode where the transmissions of torque by the dog clutch and the torque coupling are both interrupted, to a four-wheel-drive mode, the ECU sets the amount of torque that is transmitted by the torque coupling to a first torque value (T | 08-29-2013 |
180250000 | Manually operated type of lockout means | 2 |
20080210483 | Drive switching lever structure for vehicle - A drive switching lever device for a vehicle for a vehicle in which a single control lever can operate both two-wheel-drive/four-wheel drive switching means and a differential lock on/off switching mechanism includes a bell crank swingably supported by a vehicle body side. A pull rod adapted to operate a switching lever of a two-wheel-drive/four-wheel-drive switching means is connected to a lever bracket and a control cable adapted to operate a switching lever of a differential lock on/off switching mechanism is connected to the bell crank. When a control lever is swung independently of the lever bracket, the bell crank is swung in engagement with the shaft portion of the control lever. The resulting configuration provides flexibility for the layout of the linkage between the control lever and the operating portion of each switching mechanism. | 09-04-2008 |
20150096822 | DIFFERENTIAL GEAR PROVIDED WITH DIFFERENTIAL LOCK MECHANISM - A differential mechanism regulating device which is mechanically connected to two manipulators is miniaturized. When a first cable and a second cable are pulled, a collecting member moves its position. As a result of this movement, the collecting member tilts a portion of an arm by way of a rod. As a result, a differential lock is released. The operation of the first cable and the operation of the second cable can be merged by the collecting member, and it is sufficient to connect only a collecting transmission member to the arm. The connection between the arm and the collecting transmission member can be simplified thus realizing the miniaturization of the differential mechanism. | 04-09-2015 |