An oil supply system for a vehicle transmission includes a pump drivable by two drive sources, and a hydraulic control unit including multiple control valves for distributing oil to consumers of the oil supply system. The drive power of the two drive sources are combined by a planetary gear set having an element connected to a pump drive shaft of the pump. A method for supplying the consumers of the oil supply system includes determining an overall oil flow requirement in the oil supply system and an oil flow requirement of consumers in an oil supply circuit of the transmission. The method further includes calculating a drive parameter for at least one of the two drive sources based at least in part on the oil flow requirements. Additionally, the method includes outputting the drive parameter as a specified value for controlling the at least one of the two drive sources.

A pump system for a motor vehicle having a first pump and a second pump which can be driven by an electric motor and/or an internal combustion engine, wherein the first pump and the second pump can be coupled by a clutch. A method of operating a pump system in a motor vehicle includes driving a first pump and a second pump by an electric motor and/or an internal combustion engine by coupling the first pump and a second pump.

A control device for an automatic transmission is provided, which includes a friction engagement element, and a processor configured to execute gear change control logic configured to control a gear change operation by supplying and discharging hydraulic fluid for forming a gear stage to/from the friction engagement element, and lubricant supply control logic configured to control to switching operation of a supply amount of lubricant to the friction engagement element according to an operating state of a vehicle. The processor controls the gear change operation and the switching operation to not overlap with one another.

A working-fluid supply system includes: a first pump and a second pump driven by an engine; a first switching valve capable of switching a supply target of the second pump to either one of the discharge side and the suction side of the first pump; a first switching control unit configured to perform a switching control of the first switching valve; and a first pressure control unit configured to perform a control such that pressure on the suction side of the first pump becomes a predetermined first pressure when the first switching valve is switched such that the supply target of the second pump becomes the suction side of the first pump.

A vehicular power transmitting system including a power transmitting member, an oil pump, and an oil piping assembly, and the oil piping assembly includes an oil piping body having an oil inlet and fixed, and a branch pipe. The branch pipe has a width direction parallel to a longitudinal direction of the oil piping body, and includes proximal and distal end portions. The proximal end portion is connected to the oil piping body, and the distal end portion has a delivery nozzle from which the oil is delivered toward the lubricated portion. The branch pipe has an opening formed in the proximal end portion, for communication of the branch pipe with the oil piping body, the opening having a dimension in a width direction of the branch pipe, which dimension is larger than a dimension of the distal end portion in the width direction of the branch pipe.

A method for operating a motor vehicle that has an internal combustion engine and an automated manual transmission, connected between the engine and a drive output. The transmission includes a shifting element group with a plurality of shifting elements. The transmission further includes an oil pump and an electric machine, both of which are integrated in the transmission and coupled to an input shaft of the transmission. The oil pump delivers a flow of transmission oil for cooling the shifting element group and cooling the electric machine, and the shifting elements of the shifting element group are controlled and shifted by an actuator system that is independent of the oil pump. When the motor vehicle is at rest, the oil pump is driven by the electric machine in order to cool the electric machine while the motor vehicle is at rest.

A vehicle drive device includes: a rotary electric machine; a drive transmission mechanism provided in a power transmission path connecting a rotor shaft of the rotary electric machine and a wheel; a first hydraulic pump driven by a driving force transmitted through the power transmission path; a second hydraulic pump driven by a driving force source independent of the power transmission path; a first oil passage that supplies oil discharged from the first hydraulic pump to a rotor bearing that supports the rotor shaft such that the rotor shaft is rotatable; and a second oil passage that supplies oil discharged from the second hydraulic pump to an inner peripheral surface of the rotor shaft.

A hydraulic circuit for a vehicle driving device includes an oil pump, a clutch oil passage, a cooling oil passage, a pressure regulating valve, and a shift valve. The cooling oil passage guides oil to a cooled portion of a vehicle. Supply of oil to the clutch oil passage and the cooling oil passage is switched by switching of the pressure regulating valve and the shift valve. The cooling oil passage includes: a shaft center cooling oil passage which supplies cooling oil to a shaft center of a rotation shaft of an electric motor mounted on the vehicle; and a cooling oil passage shift valve which switches presence/absence of supply of oil to the shaft center cooling oil passage.

A powertrain assembly includes one or several electric motors, a gearbox comprising a gearbox housing, an axle comprising: an axle housing, movable parts inside axle housing, comprising a shaft for a wheel, a lubricating system comprising an axle lubricating device comprising an axle oil sump and a gearbox lubricating device comprising a gearbox oil sump inside the gearbox housing which is a dry sump having an oil storage area which is separate from said gearbox oil sump, a scavenge pump and a first duct configured to retrieve oil from gear box oil sump and to convey the retrieved oil up to the oil storage area, and a main pump and a second duct configured to convey oil from the storage oil area to lubricate the gears of the gearbox.

A rotating electrical machine and an input member are placed on a first axis, a counter gear mechanism is placed on a second axis, and a differential gear mechanism is placed on a third axis. The input member, the counter gear mechanism, and the differential gear mechanism have portions placed on an axial first side with respect to the rotating electrical machine. A pump portion is placed on the opposite side of an imaginary plane passing through the first axis and the third axis from the second axis, and is placed at a location that overlaps at least one of the rotating electrical machine and the differential gear mechanism in an axial view. The pump portion is placed on the axial first side with respect to the rotating electrical machine.