Abstract: An axle assembly with a differential assembly, a housing and a transmission. The transmission has a first and second planetary gearsets that have associated (i.e., first and second) ring gears, planet carriers and sun gears. The first planet carrier is coupled to a differential carrier of the differential assembly for common rotation. The second ring gear is non-rotatably coupled to the housing. The second planet carrier is coupled to the second differential output for common rotation. The second sun gear is coupled to the first sun gear for common rotation.

Abstract: An active rev-matching system for a motor vehicle manual transmission includes an engine control module that monitors and adjusts an output speed of the motor vehicle's prime mover and at least one sensor that monitors movement of a shift linkage. When the at least one sensor determines the movement of the shift linkage is an in-gate downshift, the engine control module adjusts the available time for the engine control module to match the output speed of the prime mover to an input speed of the transmission.

Abstract: A power transmission apparatus for a vehicle may include a first input shaft adapted to selectively receive torque of an engine, a second input shaft disposed without rotational interference with the first input shaft, a third input shaft disposed in a row with the second input shaft and without rotational interference with the first input shaft, a planetary gear set including a first rotation element, a second rotation element directly connected to the third input shaft, and a third rotation element directly connected to the first input shaft, a motor/generator directly connected to the first rotation element, a first speed output unit adapted to convert torque input from the second input shaft or the third input shaft and output the converted torque, and a second speed output unit adapted to convert torque input from the second input shaft or the third input shaft and output the converted torque.

Abstract: A hydraulic control device of an automatic transmission configured such that: a first gear stage is formed by engagement of an LR brake and a low clutch; a third gear stage by engagement of the low clutch and an R35 brake; and a reverse gear stage by engagement of the LR brake and the R35 brake. The hydraulic control device includes a cut valve configured to be switched between a first state where a source pressure port of a third linear solenoid valve (SV) configured to control an oil pressure supplied to the R35 brake is connected to an oil pressure source and a second state where the pressure is discharged from the port. The cut valve becomes the second state when the third gear stage is shifted to the first gear stage, and the oil pressure supplied to the low clutch is less than a predetermined oil pressure.

Abstract: Disclosed herein are systems, gearing assemblies and methods for controlling a differential rotation rate between shafts of a vehicle using a variable speed motor. An embodiment includes a gearing assembly including a differential configured to engage a first axle shaft, a second axle shaft, and a drive shaft of a vehicle. The gearing assembly further includes a plurality of adjustment gears configured to engage the differential, configured to be driven by a variable speed motor of the vehicle, and configured to controllably alter a rotation of the first axle shaft relative to the second axle shaft based on rotation produced by the variable speed motor. The plurality of adjustment gears includes a subassembly of planetary gears including a planetary gear carrier, a first set of planetary gears coupled to the planetary gear carrier, and a second set of planetary gears coupled to the planetary gear carrier.

Abstract: A method for operating a dual-clutch transmission of a vehicle having partial transmissions with respective transmission input shafts. Two friction clutches can couple a corresponding input shaft of the partial transmissions to a drive shaft. Both partial transmissions drive a common output shaft. During a rocking free operation for rocking the vehicle free, a gear in each respective partial transmission is engaged for driving in opposed primary and secondary directions as specified by the driver. The clutches are alternately engaged and disengaged. For rocking the vehicle free, the clutch of the partial transmission having the gear for driving in the primary direction when engaged, is engaged based on accelerator pedal actuation, and in contrast the clutch of the partial transmission having the gear for driving in the secondary direction when engaged, is automatically engaged if neither of the accelerator or brake pedals has been actuated.

Abstract: Nine or more forward speeds and at least one reverse speed are achieved by a planetary gear train of an automatic transmission for a vehicle including an input shaft, an output shaft, four planetary gear sets respectively having three rotational elements, and six control elements for selectively interconnecting the rotational elements.

Abstract: A selectively actuatable one-way clutch is controlled to brake or release a generator such that a powersplit hybrid powertrain enters or exits a parallel mode of operation. To brake the generator and enter the parallel mode, the clutch is activated while overrunning the generator before the generator is slowed to engage the clutch. To release the generator and exit the parallel mode, the generator is controlled to overrun the clutch before deactivating the clutch and returning the generator to a base speed control.

Abstract: A vehicle transmission includes a first transmission mechanism arranged to transmit mechanical driving power from an output shaft of the prime mover to a first input shaft and to put any one of a first set of gears in an engaged state to drivingly connect the first input shaft to the driving wheels; and a second transmission mechanism arranged to transmit mechanical driving power from the output shaft of the prime mover to a second input shaft and to put any one of a second set of gears in an engaged state to drivingly connect the second input shaft to the driving wheels. Controllable first and second clutch units are arranged to bring the output shaft of the prime mover and the first and the input shaft, respectively, into engagement with each other. A lubrication pump is drivingly connected to the first input shaft to lubricate the transmission and an electronic control unit is arranged to determine a lubricated state of the transmission and the operational state of the lubrication pump.

Abstract: An electromechanical system for controlling the operating mode of a selectable clutch assembly and an overrunning coupling and electromechanical control assembly are provided. The system includes a control member mounted for controlled movement and a bi-directional, electrically-powered, actuator assembly coupled to the control member for selective, small-displacement, control member movement between different positions which correspond to different modes of the clutch assembly. The actuator assembly holds the control member in a desired one of the positions after electrical power to the actuator assembly has been purposefully terminated. Control logic is operative to determine a system failure and to generate a failsafe position command signal in the event of the system failure. The actuator assembly moves the control member to a failsafe position based on the failsafe position command signal to prevent inadvertent engagement of the clutch assembly.

Abstract: A drive device which can use a hybrid drive as well as a torque distribution using the same electric motor and which can also have a simple structure. The drive device (1) can be coupled or is coupled to a first and a second motor (6, 7), the second motor (7) can be used in accordance with the shift state of a shifting device (13) for a drive or for an active torque distribution.

Abstract: A family of hybrid electric transmission arrangements share a common center housing, rear housing, two electric machines, power-split planetary gearset, and torque multiplication gearset. One arrangement additionally utilizes an overdrive gearset and an overdrive clutch. Another arrangement additionally utilizes two clutches and a brake to implement three operating modes. Since the components that differ between the two arrangements use the same general packaging space and all shift elements are hydraulically controlled via a front housing, the design of the front housing is also similar.

Abstract: Embodiments herein relate to piece-part, sub-assembly, assembly, and component levels of a differential composed of a sun gear configuration and utilized in an integrated drive generator. An integrated drive generator is a hydro-mechanical transmission that drives a synchronous salient pole generator. The integrated drive generator is a constant speed output, variable speed input transmission that includes the differential and a hydraulic unit. In general, the integrated drive generator utilizes the variable speed input from an accessory gear box of an engine to drive or control a hydraulic unit, which in turn drives or controls a churn leg member of the differential. As the differential is driven, speeds of each speed member of the differential are then summed to generate the constant speed output to drive the synchronous salient pole generator.

Abstract: A transfer bearing assembly includes a transfer bearing shaft. An oil transfer bearing surrounds the transfer bearing shaft. A radially extending tube is attached to the transfer bearing shaft and is configured to engage a carrier on a speed reduction device.

Abstract: A pressure regulating passage includes a pressure regulating valve and a check valve. The pressure regulating valve regulates a hydraulic pressure supplied to a friction engagement element to be a predetermined pressure lower than an engagement pressure. The check valve prevents reverse flow of hydraulic oil supplied to the friction engagement element. An operative position of a manual valve is switched so as to switched between a passage that supplies hydraulic pressure to the hydraulic pressure supply passage while bypassing the pressure regulating passage and a passage that supplies hydraulic pressure to the hydraulic pressure supply passage through the pressure regulating passage. Accordingly, when an automatic transmission is in a D range and a vehicle is stopped, regardless of a line pressure, an N control process is performed to disengage the friction engagement element.

Abstract: A clutch burst prevention method for preventing a non-drive input shaft clutch of a vehicle provided with a double clutch transmission (DCT) from damage may include a torque reduction operation of reducing a torque of an engine by an ECU when a stuck phenomenon occurs on a shift gear of the non-drive input shaft.

Abstract: The present disclosure provides a multiple speed transmission having an input member, an output member, a plurality of planetary gearsets, a plurality of interconnecting members and a plurality of torque-transmitting mechanisms. The plurality of planetary gear sets includes first, second and ring gears. The input member is continuously interconnected with at least one member of one of the plurality of planetary gear sets, and the output member is continuously interconnected with another member of one of the plurality of planetary gear sets. At least eight forward speeds and one reverse speed are achieved by the selective engagement of the five torque-transmitting mechanisms.

Abstract: A powertrain system including an internal combustion engine rotatably coupled to a variator of a continuously variable transmission (CVT) is described. A method for controlling the CVT includes determining a first speed ratio change rate based upon a desired speed ratio and a commanded speed ratio, and determining a commanded speed ratio trajectory based upon the first speed ratio change rate, an actual speed ratio and a commanded speed ratio. A ratio change coefficient and a force ratio factor are determined based upon the commanded speed ratio trajectory. A shift force is determined based upon the ratio change coefficient and a total speed ratio change rate. A primary pulley pressure and a secondary pulley pressure for the CVT are controlled based upon the shift force and the force ratio factor.

Abstract: Systems and methods for improving operation of a hybrid vehicle are presented. In one example, an electrical load may be automatically activated to consume electrical energy produced during driveline braking so that driveline braking may be extended. The electrical load may be a windscreen heater or other device.

Abstract: The present invention concerns a method of controlling a double clutch transmission (1) comprising two clutches (2a, 2b) one of which that is transmitting torque being the active clutch while the other one constituting the incoming clutch characterized by combining the incoming clutch preparation and the torque handover from the active clutch by over actuating the incoming clutch and shutting off the active clutch in a non proportional way, based on a feedback signal from the incoming clutch.