Two-speed electric drive unit

摘要

An electric drive unit for a vehicle including an electric motor, a differential housing, a reducing gear set, a drive input gear, a first clutch and a second clutch. The differential housing forms a carrier for a plurality of planetary gears which are in driving engagement with the drive input gear. The drive input gear is in driving engagement with the reducing gear which connected to the electric motor. A ring gear outside the differential housing is in driving engagement with the planetary gears. The first clutch can be engaged to couple the drive input gear to the differential housing resulting in the electric drive unit being placed in a first drive ratio and a second clutch can be engaged to ground the ring gear resulting in the electric drive unit being placed in a second drive ratio.

主权项

1. An electric drive unit for a motor vehicle, comprising:
an electric motor; a differential housing having a differential gear arrangement disposed therein, wherein the differential housing forms a carrier for a plurality of planetary gears; a reducing gear set drivingly connected to the electric motor; a drive input gear partially disposed within the differential housing, wherein the drive input gear has a first portion and a second portion, wherein the first portion is drivingly engaged with the plurality of planetary gears and the second portion is drivingly engaged with the reducing gear set; a ring gear disposed outside the differential housing, wherein the ring gear is drivingly engaged with the plurality of planetary gears; a first clutching device which may be selectively engaged to couple the drive input gear to the differential housing to establish a first drive ratio; and a second clutching device which may be selectively engaged to ground the ring gear to establish a second drive ratio.