A drive apparatus includes a motor; a reduction gear connected to the motor; a differential connected to the reduction gear, for rotating an axle about a differential axis; a housing including a gear housing portion housing the reduction gear and the differential; and an oil housed in the gear housing portion. The differential includes a gear for rotating about the differential axis. An end portion of the gear is lower than the reduction gear, and is configured to soak in the oil. The housing includes an oil drain hole and an oil feed hole for joining an interior of the housing and a space outside of the housing, a first stopper member removably in the oil drain hole, and a second stopper member removably in the oil feed hole. Each of the oil drain hole and the oil feed hole is in a portion of the gear housing portion.

An electric drive axle including a first gear and an idler shaft having a second gear and a third gear disposed thereon, wherein the second gear cooperates with the first gear. A clutch assembly selectively couples a planetary gear system to one of the second gear and the third gear, wherein the planetary gear system is configured to produce a predetermined gear ratio between the second gear and the third gear.

An electric drive axle including a first gear and an idler shaft having a second gear and a third gear disposed thereon, wherein the second gear cooperates with the first gear. A clutch assembly selectively couples a planetary gear system to one of the second gear and the third gear, wherein the planetary gear system is configured to produce a predetermined gear ratio between the second gear and the third gear.

In a lubricating structure for a transmission, a case rib for stopping oil that is scooped up by a final driven gear is disposed on an inner surface of a first transmission case. The case rib is disposed above a location of a lower side portion of the final driven gear, which is immersed in the oil accumulated below the first transmission case, and at a position above a differential device and a drive shaft.

In a lubricating structure for a transmission, a case rib for stopping oil that is scooped up by a final driven gear is disposed on an inner surface of a first transmission case. The case rib is disposed above a location of a lower side portion of the final driven gear, which is immersed in the oil accumulated below the first transmission case, and at a position above a differential device and a drive shaft.

Disclosed is a rotating device including: a first gear part having a first gear; a second gear part coupled to the first gear and having a second gear that rotates relative to the first gear; a third gear part coupled to the second gear and having a third gear that rotates relative to the second gear; and first and second driving units for respectively providing rotational driving forces to first and second input gear parts which are two gear parts of the first to third gear parts to determine a rotational output of an output gear part which is the remaining gear part. At least one of the first and second driving units changes the rotational speed of at least one of the first and second input gear parts to change the rotational speed of the output gear part.

Disclosed is a rotating device including: a first gear part having a first gear; a second gear part coupled to the first gear and having a second gear that rotates relative to the first gear; a third gear part coupled to the second gear and having a third gear that rotates relative to the second gear; and first and second driving units for respectively providing rotational driving forces to first and second input gear parts which are two gear parts of the first to third gear parts to determine a rotational output of an output gear part which is the remaining gear part. At least one of the first and second driving units changes the rotational speed of at least one of the first and second input gear parts to change the rotational speed of the output gear part.

Provided is a motor driving unit (1) capable of achieving space saving of a motor room and cost reduction of a vehicle. The motor driving unit (1) includes a motor (10), an inverter (50) that controls driving of the motor (10), and a transaxle (30). The inverter (50) is disposed at a position facing the second gear (32) in the transaxle (30) in a Z-axis direction of the motor (10), and a flow channel of refrigerant arranged inside the inverter (50) is partitioned off from an internal space of the motor (10) by a single barrier.

Provided is a motor driving unit (1) capable of achieving space saving of a motor room and cost reduction of a vehicle. The motor driving unit (1) includes a motor (10), an inverter (50) that controls driving of the motor (10), and a transaxle (30). The inverter (50) is disposed at a position facing the second gear (32) in the transaxle (30) in a Z-axis direction of the motor (10), and a flow channel of refrigerant arranged inside the inverter (50) is partitioned off from an internal space of the motor (10) by a single barrier.

In a hydraulic clutch actuation system for controlling in particular a clutch-controlled compensation unit of a drivetrain of a motor vehicle, in which hydraulic clutch actuation system a hydraulic pump is used for generating hydraulic pressure in a hydraulic fluid for the purposes of clutch actuation by means of a hydraulic clutch actuation device, provision is made whereby the hydraulic fluid is supplied as clutch oil to the friction members of the friction clutch which are to be oiled with clutch oil (cooling and/or lubricating oil). In this way, improved and more reliable oiling of the clutch can be made possible even at low vehicle speeds and under heavy clutch load, wherein, despite this, very rapid dry-running of the cutches, and low power losses generated by the clutch oiling, are ensured.