Abstract: A venting structure for a housing containing rotating components and fluid, such as a vehicle drive unit, includes a vent receptacle that opens to an exterior of the housing. A venting duct integrally formed in a wall of a main cavity for the housing is connected at a first end to a bottom of the vent receptacle and at a second end to a portion of the main cavity that is above fluid within the main cavity for orientations between and including the housing being upright and the housing being inverted.

Abstract: A venting structure for a housing containing rotating components and fluid, such as a vehicle drive unit, includes a vent receptacle that opens to an exterior of the housing. A venting duct integrally formed in a wall of a main cavity for the housing is connected at a first end to a bottom of the vent receptacle and at a second end to a portion of the main cavity that is above fluid within the main cavity for orientations between and including the housing being upright and the housing being inverted.

Abstract: Improved rotor/stator air gap control within the electric traction motor for an electric vehicle is provided by stator supports projecting from interior sidewalls of the motor housing and contacting portions of peripheral surfaces of the stator core. The stator supports are spaced apart from a pilot bore receiving an end of the stator. Surfaces of the pilot bore contacting the stator core and surfaces of the stator support contacting the stator core are spaced apart, with oil channels in the intervening region allow flow of combined coolant and lubricant over the stator core. The portions of the stator core contacted by the surfaces of the pilot bore are preferably located between an end of the stator core and a midpoint between the end and an opposite end.