American Axle & Manufacturing, Inc.

Bangalore Lingaraj Yashwanth

Paul Joseph Valente

Jeffrey J Ronning

Frederick E Zink

Christopher D Pump

An electric drive unit that includes an electric motor having a rotor with a rotor shaft and a heat exchanger that is received in the rotor shaft. The heat exchanger has a plurality of heat exchanger plates, each of which having a hub, a rim member, and disc spring portion that interconnects the hub and the rib member. Each disk spring portion defines a plurality of coolant apertures. The heat exchanger plates are press-fit to the rotor shaft such that each disc spring portion is deflected from a pre-installation state, and each rim member is engaged to an interior surface of the rotor shaft while being spaced apart from adjacent rim members along a rotational axis of the rotor. A first coolant passage is disposed through the hubs of the plates. The coolant apertures in the heat exchanger plates cooperate to form a plurality of second coolant passages.

Electric drive unit with a heat exchanger that is formed by disks having a disk spring portion and which are received into a bore in a rotor shaft of an electric motor

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Troy, MI, United States of America

Bangalore Lingaraj Yashwanth