Finned rear housing for alternator

摘要

An electric machine of the present application comprises a generally cylindrically-shaped main housing and a fan extending from a rear end of the main housing. A rear housing is mounted onto the rear end of the main housing and encloses the fan. The rear housing includes a rear plate having an outer surface and an inner surface, a support rim which is mounted onto the stator to secure the rear housing to the electric machine, and a plurality of axially extending ribs spaced circumferentially around and interconnecting the support rim and the rear plate.