A drive unit for a drive train of an electrically drivable motor vehicle, in particular a hybrid motor vehicle, and to a drive assembly. The drive unit is for a drive train of an electrically drivable motor vehicle, and includes a first electric rotary machine for generator operation and a second electric rotary machine for drive motor operation, and a transmission. A rotor of the first electric rotary machine is for direct mechanical coupling to an output element of an internal combustion engine, and a rotor of the second electric rotary machine is or can be rotationally coupled to an input of the transmission, with no torque-transmitting connection being provided between the first electric rotary machine and the transmission.

A drive device includes a housing, and a rotary electric machine and a transmission housed in the housing. A lubricating oil for lubricating a gear of the transmission is stored in a bottom portion of the housing. The housing includes a refrigerant passage through which a refrigerant for cooling the rotary electric machine flows, and a storage portion adjacent to the refrigerant passage and configured to temporarily store the lubricating oil scooped up by the gear of the transmission.

In a drive device, a first flow path of a fluid connects a gear accommodation portion and an inlet of a pump. A second flow path connects an outlet of the pump and one end of a third flow path via a cooler. The third flow path is inside a partition wall of a housing and intersects a rotation axis of a first shaft. A fourth flow path connects another end of the third flow path and one end of a fifth flow path. The fifth flow path is inside a gear side lid of the housing. Another end of the fifth flow path is connected to one end of a second shaft in an axial direction. One end of a sixth flow path is connected to another end of the third flow path. Another end of the sixth flow path is inside a housing tubular portion.

A vehicle system includes a vehicle component with a component temperature sensor, and a fluid circuit in fluid communication with the component and with a fluid temperature sensor. A controller is in communication with the component sensor and the fluid sensor. The controller is configured to, in response to a temperature difference between the component sensor and the fluid sensor being greater than a predetermined threshold value, output a flag or a diagnostic code indicative of a fluid level in the fluid circuit. A vehicle diagnostic method and a vehicle are also provided.

An electric drive module (EDM) configured to generate and transfer drive torque to a driveline for propulsion of an electric vehicle. The EDM includes a gearbox assembly, an electric motor having a rotor and a stator, and a thermal management system. The thermal management system includes a fluid circuit configured to supply a fluid to the gearbox assembly, the rotor, and the stator, and a pump configured to direct the fluid through the fluid circuit. A valve is disposed on the fluid circuit and configured to selectively move between (i) a closed position where the fluid is not supplied to the stator, and (ii) an open position where the fluid is supplied to the stator for cooling thereof.

An electric power supply is described that has direct-current (DC) to alternating-current (AC) circuitry adapted and configured to receive DC power input having a DC input voltage and convert the DC power input to multi-phase, alternating-current (AC) power output. The DC to AC circuitry includes an electromagnetic interference (EMI) noise filter to suppress EMI noise, wherein the EMI noise filter comprises two, electrically insulated, conductive rails configured and adapted to receive the DC power input, ferrite material at least partially surrounding the two conductive rails, and a current sensing element positioned in a gap in the ferrite material and configured to measure leakage current escaping to ground.

A power transmission device, includes a motor; a gear mechanism connected downstream of the motor; a pump that sucks oil through a pump inlet; and a box that accommodates the motor and the gear mechanism. The pump inlet is provided on an inner wall of the box.

A power transmission device includes a motor, a gear mechanism connected downstream of the motor; and a pump that sucks oil through a pump inlet. A shortest distance between an open end of the pump inlet and a surface of a stator of the motor is shorter than a shortest distance between the open end of the pump inlet and a surface of the gear mechanism.

Methods and systems are provided for a multi-speed transmission. The multi-speed transmission includes a housing, an electric motor with a stator and a rotor positioned within the housing, and a planetary assembly positioned on a first axial side of the electric motor. The transmission further includes a first and second clutch unit spaced away from one another, each including a synchronizer, and designed to selectively rotationally couple to the rotor and to rotationally couple the rotor to different gears in the planetary assembly and where the electric motor and planetary assembly are coaxially arranged.

A hybrid transmission includes an electric transmission including a motor generator, and a gear transmission including a gear driver without a motor generator. A transmission case includes an electric transmission chamber in which the electric transmission is accommodated, and a gear transmission chamber in which the gear transmission is accommodated, the electric transmission chamber and the gear transmission chamber being adjacent to each other. The transmission case includes a partition wall separating the electric transmission chamber from the gear transmission chamber in a non-communication manner.