Hybrid drive system

摘要

An electric drive device including an input member drivably coupled to an internal combustion engine, a first rotary electric machine, a second rotary electric machine disposed on an axis different from that of the first rotary electric machine, an output member drivably coupled to wheels and the second rotary electric machine, a power distribution device that distributes torque transferred from the input member to the output member and the first rotary electric machine, and a case.

主权项

1. An electric drive device including an input member drivably coupled to an internal combustion engine, a first rotary electric machine, a second rotary electric machine disposed on an axis different from that of the first rotary electric machine, an output member drivably coupled to wheels and the second rotary electric machine, a power distribution device that distributes torque transferred from the input member to the output member and the first rotary electric machine, and a case, wherein:
the input member, the output member, the power distribution device, and the first rotary electric machine are disposed coaxially with each other, and the output member and the power distribution device are disposed on a side where the internal combustion engine is provided with respect to the first rotary electric machine in an axial direction of the output member; the output member includes a tubular portion provided in at least a part of the output member in the axial direction; the case includes a radially extending portion provided between the power distribution device and the output member and the internal combustion engine in the axial direction to extend in a radial direction of the output member, the radially extending portion being formed such that at least a radially inner end portion of the radially extending portion is positioned on a radially inner side with respect to the tubular portion; and the radially extending portion supports both a first bearing and a second bearing, the first bearing rotatably supporting the input member from a radially outer side, and the second bearing rotatably supporting the tubular portion of the output member from a radially inner side.