Abstract: A drive system and method includes a gearbox system, a first hydraulic motor driving a first input shaft, a second hydraulic motor driving a second input shaft, a drive pump driving the first and second hydraulic motors, and a system control for controlling the drive pump, the clutch assembly, and the first and second hydraulic motors. The gearbox system includes the first input shaft having a first input gear driving a first output gear on an output shaft, the second input shaft having a second input gear driving a second output gear disengageable from the output shaft, and a clutch assembly for engaging the second output gear with the output shaft. The clutch assembly includes a clutch to engage the second output gear with the output shaft, and a fluid access channel through a rotary manifold to provide pressurized fluid to activate the clutch.

Abstract: In an epicyclic gear system, each planet gear is connected by a respective connecting pin to an asymmetric planet carrier having two plate portions connected to each other, and only one of which is connectable to a reaction member; and at least one end portion of each connecting pin and the plate portion connected to the reaction member are connected by a radially undulated annular wall flexible angularly and radially.

Abstract: A hybrid vehicle has a powertrain that includes a transmission with a planetary gear set that has a first, a second, and a third member. An engine is connected for unitary rotation with the first member. A first final drive is operatively connectable with the carrier member and connected with the first axle. A first motor-generator is connected for unitary rotation with the third member. A second motor-generator is operatively connected for proportional rotation with one of the axles. A first clutch is selectively engageable to connect any two of the members for unitary rotation with one another. The planetary gear set provides an underdrive ratio of speed of the second member to speed of the engine when the sun gear member is stationary.

Abstract: A transmission includes an input member, an output member, and a stationary member. First and second planetary gearsets each have respective first, second, and third members. A first motor/generator has a first rotor operatively connected to one of the members of the planetary gearsets for unitary rotation therewith. A second motor/generator has a second rotor operatively connected to one of the members of the planetary gearsets for unitary rotation therewith. The transmission also includes first, second, and third torque transmitting devices operative to selectively connect members of the planetary gearsets with the input member, the stationary member, or with other members of the planetary gearsets to provide two electric vehicle modes, two electrically variable modes, and a fixed gear ratio mode of transmission operation.

Abstract: A drive train provided with a CVT that can be used in both CVT and Infinitely Variable Transmission (IVT) configurations and that include a High-Low gear selection assembly is described herein. Transitions between configurations are seamless to the operator.

Abstract: A transmission of the present invention has an input member, an output member, four planetary gear sets, a plurality of coupling members and a plurality of torque transmitting devices. Each of the planetary gear sets includes first, second and third members. The torque transmitting devices include clutches and brakes. A method for controlling the transmission selectively engages the torque transmitting devices in combinations of at least two to establish at least nine forward speed ratios and at least one reverse speed ratio.

Abstract: The present invention utilizes the rotary kinetic power of a rotary kinetic power source to directly drive the epicyclic gear set, or to drive the epicyclic gear set through a transmission device, then a continuous variable transmission (CVT) is individually installed between two output shafts of the epicyclic gear set and the load driven thereby, so the wheel set of the driven load is enabled to randomly perform variation of the driving speed ratio and the driving torque, so as to drive the combined common load; between the output ends of the mentioned two continuous variable transmissions, a limited slip differential or a stabilize device composed of a dual shaft connecting device having slip coupling torque can be further installed according to actual needs.

Abstract: A hydraulic control system for a transmission of a motor vehicle includes a source of pressurized hydraulic fluid that communicates with an analog electronic transmission range selection (ETRS) subsystem or a manual valve. The ETRS subsystem includes an ETRS valve, a park servo, a park mechanism, a mode valve, and a plurality of solenoids. The ETRS and manual valve communicate with a clutch actuator subsystem that engages a one-way clutch and six clutches/brakes.

Abstract: A transmission assembly includes a reverse drive assembly including a reverse drive shaft, a reverse drive input gear in constant mesh with a main shaft gear, a planetary gear system, and a reverse drive output gear. The reverse drive assembly is driven by the main shaft gear in forward and reverse. The reverse drive output gear is configured to drive a counter shaft through a corresponding multi-gear half shaft when in reverse. The half shaft is supported on the main shaft and can be selectively unlocked from the main shaft to provide a reverse gear ratio, thereby establishing a reverse power transmission path from the main shaft, through the reverse drive assembly, through the half shaft in the un-locked condition to the counter shaft, and to an output drive supported on the main shaft.

Abstract: A hybrid drive system includes an input member, a rotating electric machine, a power distributing apparatus that distributes and transmits torque transmitted to the input member to the rotating electric machine and an output member, an output gear capable of outputting torque transmitted to the output member, an output bearing that rotatably supports the output member, and a rotor bearing that rotatably supports the rotor. The entire apparatus is arranged overlapping with the output member at a position in an axial direction on a radially inner side of the output member, and a ring gear of the apparatus is integrally provided with the output member, on an inner peripheral surface of the output member. The output gear is integrally provided with the output member, on an outer peripheral surface of the output member. The output bearing and the rotor bearing are arranged overlapping at a position in the axial direction.

Abstract: A wheel driving speed reducer includes a parallel shaft gear mechanism that includes a parallel shaft gear, a planetary gear mechanism that is provided on a rear stage of the parallel shaft gear mechanism and includes planetary gears and an internal gear with which the planetary gears internally mesh, and a casing that accommodates the parallel shaft gear mechanism and the planetary gear mechanism. A tooth portion of the parallel shaft gear protrudes and extends into a gap, which is formed between the casing and the internal gear or a member integrated with the internal gear, in an axial direction. The tooth portion of the parallel shaft gear and the internal gear or the member integrated with the internal gear overlap each other when seen in a radial direction.

Abstract: A lorry 1 comprises a combustion engine 3 which is connected via the transmission module 5 to the input shaft 7 of an automatic transmission 9 with switchable gear settings. The output shaft 11 of the transmission 9 is connected to the wheels 15 of the lorry via a differential 13. The transmission module 5 comprises a clutch 17 which has two clutch parts 17A and 17B that can be coupled to each other. The transmission module 5 further comprises a part module 19 which has an input 21 and an output 23. The part module 19 comprises a bypass transmission 25 with three rotational members 27, 29, 31 of which the third rotational member 31 can be coupled to the firm world 35 via a brake 33.

Abstract: The pump unit has a pump and a hybrid drive. The pump comprises a pump housing and a pump shaft. The hybrid drive comprises an electric motor and a driveshaft connection to a driveshaft. The electric motor and the driveshaft connection are each in driving mechanical functional connection with the pump shaft by way of a planetary gearset for driving the pump shaft. A stator of the electric motor is at least partially integrated in the pump housing. A rotor of the electric motor is mechanically connected fixed to a sun gear of the planetary gearset. The driveshaft connection is mechanically connected fixed to a ring gear of the planetary gearset. The pump shaft is mechanically connected fixed to a planetary carrier of the planetary gearset.

Abstract: An auxiliary transmission module has an auxiliary transmission having an input shaft, an output shaft, and a mechanical synchronizer, and a controller. The controller is configured to command a downshift for the auxiliary transmission, control the input shaft to a generally synchronous speed with the output shaft for engagement, and increment the speed of the input shaft by a predetermined speed differential above the speed of the output shaft or engagement if the auxiliary transmission is unengaged after controlling to the generally synchronous speed. A method of downshifting includes commanding a downshift for the auxiliary transmission, controlling an input shaft to a generally synchronous speed with an output shaft for engagement, comparing a rotational speed upstream with a rotational speed downstream to verify engagement, and controlling the input shaft to an asynchronous speed with the output shaft for engagement during a recycle event when it is unverified.

Abstract: A gearbox includes a shaft input spherical bearing and a shaft output spherical bearing enabling the ring gear to float within the housing and not engage the housing. The shaft output spherical bearing permits angular displacement of the output shaft with respect to the longitudinal axis of said output shaft. A spline connection enables the ring gear to pivot with respect to the cover. Loads transmitted to the housing of the gearbox are not transferred to the gear systems and the gear systems self-align within the housing.

Abstract: An axle assembly having an axle housing that includes arm portion for receiving an axle. A dam may be disposed in the arm portion and may cooperate with the arm portion to define a reservoir that is configured to retain a volume of a lubricant. A conduit may deliver lubricant to the reservoir.

Abstract: A hydrostatic mechanical transmission according to the disclosure includes: a hydrostatic transmission which transmits power generated in an engine using a pump and a motor; a main transmission unit which transmits the engine power to a final driving unit through a driving shaft; a complex planetary gear which synthesizes and transmits the engine power transmitted from the hydrostatic transmission and the main transmission unit; and an automatic manual sub-gearshift which receives the synthesized engine power from the complex planetary gear so as to perform a transmission function and transmits the engine power to the final driving unit.

Abstract: A method of controlling a transmission of a vehicle powered by an electric motor may include initiating a gear engagement in the transmission. The method may also include activating a torque jog in the electric motor to assist with the gear engagement. The torque jog may include a fluctuation in the torque output of the electric motor.

Abstract: A powertrain system includes an internal combustion engine, at least one electric machine and an electro-mechanical transmission operative to transmit torque to a driveline. A method for controlling the powertrain system includes enabling neutral operation of the transmission in response to an operator input, activating a first clutch coupled to a first planetary gear set, the first planetary gear set which includes a first element, a second element and a third element. Torque commands are coordinated between the engine and a first electric machine to establish a net zero output torque condition. If a violation of the net zero output torque condition is present, slippage of the first clutch is allowed to dissipate net output torque from reacting with the driveline of the powertrain system.

Abstract: A vehicle includes an engine configured for automatic shutdown and restart. The vehicle is provided with a controller that is configured to restart the engine when a difference between an actual brake pressure and a filtered brake pressure is greater than a threshold value. The filtered brake pressure is dependent upon a magnitude of the actual brake pressure and a rate of change of the actual brake pressure.