Class / Patent application number | Description | Number of patent applications / Date published |
477035000 | Differential transmission | 16 |
20080300101 | COMPACT POWER TRANSFER UNIT FOR TRANSAXLE APPLICATIONS - The present invention provides a system for providing an improved compact power transfer unit for use in motor vehicles having a front wheel drive transverse based engine and transaxle, and, more particularly, to a power transfer unit for use with a transaxle arrangement capable of providing all-wheel drive or four-wheel drive. The present invention discloses a planetary gear utilizing a fixed ring gear, the planetary gear capable of selectively engaging a low range output from the power transfer unit for propelling the vehicle when driven in off-road conditions requiring higher torque and slower speeds. The vehicle driver can selectively engage a normal, high range where torque flows through the planetary gear directly to the drive shaft with no gear reductions, or the driver may selectively engage the low range where the torque flowing into the planetary gear is redirected and reduced thereby providing higher torque with reduced speed. A neutral range is also selectively engagable by the driver which decouples the planetary gear from the main output shaft whereby no power is transferred to the main drive shaft. | 12-04-2008 |
20090029825 | Control device for vehicular power transmitting device - This invention relates to a control device for a vehicular power transmitting device. The control device has shifting-point altering means | 01-29-2009 |
20090088291 | Control device for vehicular power transmitting apparatus - There is provided a control device for a vehicular power transmitting apparatus of equipped with a differential portion is provided for suppressing a durability decrease of the differential portion or component parts related thereto upon preventing a rotary element of the differential portion from reaching a high-speed rotation. Rotation-stop determining means | 04-02-2009 |
20100029437 | RIGHT-LEFT DRIVING FORCE CONTROLLER - A controller includes: a adjuster, configured to adjust distribution of driving force between right and left wheels; a limiter, configured to limit a difference between operations of the right and left wheels; a first calculator, configured to calculate a first control amount corresponding to the adjustor and including an amount related to direction of shift of driving force between the right and left wheels; a second calculator, configured to calculate a second control amount corresponding to the limiter; a third calculator, configured to calculate a third control amount including the second control amount and the amount; a fourth calculator, configured to calculate a fourth control amount that is a combination of the first and third control amounts; a selector, configured to select either the adjustor and the limiter; and a controller, configured to control the adjustor or the limiter in accordance with the fourth control amount. | 02-04-2010 |
20100234175 | METHOD FOR ACTUATING AN INTERWHEEL DIFFERENTIAL LOCKS - A method of actuating an interwheel differential lock of a mobile vehicle. The interwheel differential lock is actuated to engage depending on the speed of the vehicle, the accelerator pedal position and the gradient of the torque at the transmission output. | 09-16-2010 |
20110021314 | POWER TAKE-OFF CLUTCH SYNCHRONIZING SYSTEM - A power take-off (PTO) is used to selectively run a secondary device. The PTO includes a clutch assembly having first and second clutch members that are selectively engaged with each other to drive the secondary device. The first clutch member is associated with a driving input and rotates at an input speed. An accumulator is in power communication with the secondary device and is used to provide power to temporarily drive the second clutch member via the secondary device such that a speed of the second clutch member can be synchronized with the input speed for clutch engagement. | 01-27-2011 |
20120214641 | MACHINE CONTROL SYSTEM UTILIZING INERTIAL YAW SENSOR - An electronic traction optimization system includes a control unit adapted to produce a corner speed estimate signal for each wheel of a machine, produce an ideal target speed signal for each wheel having a value at least partially responsive to the corner speed estimate signals, produces a practical target speed signal for each wheel, generates an actual target speed signal having a value responsive to a comparison of the ideal target speed signal and the practical target speed signal for each wheel. The control unit compares each actual target speed signal to an associated wheel speed signal to obtain a wheel speed error signal for each wheel and converts each wheel speed error signal to a clutch control signal, wherein each differential clutch actuator is responsive to an associated clutch control signal. | 08-23-2012 |
20120283065 | CONTROL APPARATUS FOR VEHICULAR POWER TRANSMITTING SYSTEM - A control apparatus for a vehicular power transmitting system includes a shifting-point changing portion configured to change a shifting point at which a determination to perform a shifting action of a transmission portion is made, such that a shifting portion is changed according to a shifting response of the transmission portion. Alternatively, the control apparatus includes a shift-control start-point changing portion configured to change a shift-control start point at which the determination to perform the shifting action is made, such that the shift-control start point is changed according to the shifting response of the transmission portion, and a compulsory shift-control starting portion configured to make the determination when an operating point of a differential portion electric motor has reached the shift-control start point. | 11-08-2012 |
20130017927 | Method of Shifting a Tandem Drive Axle Having an Inter-Axle Differential - A method of shifting a power distribution unit for a vehicle from a first operating state to a second operating state is provided. The method includes the step of adjusting a rotational speed of a portion of a second axle assembly using a clutching device to impart energy to a lubricant within the second axle assembly. A controller in communication with a power source of the vehicle adjusts an operating condition of the power source to facilitate moving the clutching device. The power distribution unit includes an inter-axle differential capable being placed in a locked condition by the clutching device and of accommodating a rotational difference between a first output gear and a second output gear with the inter-axle differential. | 01-17-2013 |
20130296131 | MOTOR VEHICLE DRIVE TRAIN - In a motor vehicle drive train device with a drive engine and a drive train which has a first coupling unit in the form of a clutch arranged close to the drive engine and at least one second coupling unit arranged in the flow of force from the drive engine close to the drive wheels of the vehicle, a control unit is provided which controls the coupling units and which has an overrun operating mode wherein, at a first point, the drive engine can be disconnected from the drive train by opening the clutch and, at a second point, the coupling units close to the drive wheels can be disengaged so as to disconnect the drive train also from the drive wheels. | 11-07-2013 |
20140100077 | AWD VEHICLE WITH DISCONNECT SYSTEM - A vehicle drive train for transferring torque to first and second sets of wheels includes a first driveline adapted to transfer torque to the first set of wheels and a synchronizing clutch. A second driveline is adapted to transfer torque to the second set of wheels and includes a power disconnection device and a friction clutch. A hypoid gearset is positioned within the second driveline in a power path between the synchronizing clutch and the power disconnection device. The friction clutch and the power disconnection device are positioned on opposite sides of the hypoid gearset. The hypoid gearset is selectively disconnected from being driven by the first driveline, the second driveline or the wheels when the synchronizing clutch and the power disconnection device are operated in disconnected, non-torque transferring, modes. | 04-10-2014 |
20140106930 | DRIVE DEVICE WITH AT LEAST ONE ELECTRIC ENGINE - A drive device having at least one electric machine, a gearbox, a differential which can be driven by the electric machine by means of the gearbox, at least one torque-fixed first operative connection between a first drive shaft of the electric machine and the gearbox. | 04-17-2014 |
20140162842 | Torque Vectoring Device With Planetary Gear Set For Connection To Balancing Shaft - A device for torque vectoring in a wheeled vehicle is presented. The device includes a differential mechanism arranged on an axle having a first drive shaft and a second drive shaft, an electrical power source connected to an electrical motor, the electrical motor being connectable to the axle for torque vectoring between the first drive shaft and the second drive shaft, and control means connected to the power source and configured to receive a plurality of variables representing the current vehicle state and to determine drive currents being dependent on the variables, wherein the drive currents are supplied to the electrical motor from the power source for introducing a torque increase to either one of the first or second drive shafts and a corresponding torque decrease to the other one of the first or second drive shafts. | 06-12-2014 |
20140179489 | VEHICLE - A vehicle includes a transmission between an engine and a drive wheel and includes a differential mechanism (planetary gear mechanism) between the engine and an engagement device (transmission). A controller (ECU) included in the vehicle calculates a variation rate in the whole rotation energy of the planetary gear mechanism when it is in the inertia phase of a shift. The ECU increasingly corrects an engine generated power and decreasingly corrects a transmission transfer power when the variation rate is higher than 0. The ECU decreasingly corrects the engine generated power and increasingly correct the transmission transfer power when the variation rate is lower than 0. | 06-26-2014 |
20140213412 | CONTROL STRATEGY FOR OPERATING A LOCKING DIFFERENTIAL - A drive train having a locking differential and a control unit for controlling operation of the locking differential. The control unit is responsive to selected vehicle characteristics to sua sponte activate or inactivate a locking mechanism of the locking differential to cause the locking differential to operate in a locked manner or an unlocked manner, respectively. A method for operating a locking differential is also provided. The method includes: utilizing only preselected vehicle criteria indicative of the operational state of the vehicle to identify a situation in which a locking mechanism associated with the locking differential is to be energized; and responsively energizing the locking mechanism. | 07-31-2014 |
20140336001 | TRANSFER DEVICE - A transfer device capable of performing switching between a two-wheel drive mode or a standby four-wheel drive mode and a full-time four-wheel drive mode is provided with: a center differential which comprises a differential mechanism including one side gear coupled to rear wheels and the other side gear capable of transmitting power to a spline piece coupled to front wheels, and a differential case coupled to an engine; a switching sleeve which is movable between a first position at which the differential case and a hub are engaged and a second position at which the hub and the spline piece are engaged; and a control clutch which engages and disengages a rear wheel output shaft coupled to the one side gear and the spline piece. | 11-13-2014 |