US 2011/0298314 A1Published application

Vehicle drive system

AssigneeAisin Aw Co., Ltd.

InventorsTomoo ATARASHI, Hirotaka YATA, Isao FUJISHIMA

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Abstract

A vehicle drive system configured with a dynamo within a case. The case is disposed on at least one axial side of the dynamo, and includes a wall portion overlapping the dynamo, which has a section that overlaps with the dynamo as viewed from the axial direction. The wall portion overlapping the dynamo includes a supply flow passage through which lubricating-cooling fluid flows, and which is formed with a first supply portion that supplies lubricating-cooling fluid to a rotor support bearing for the dynamo electric. The first supply portion includes a throttle portion whose flow passage cross-sectional area is small when compared to an upstream-side flow passage cross-sectional area in the flow direction of lubricating-cooling fluid. The supply flow passage includes a second supply portion that is a portion supplying lubricating-cooling fluid to the dynamo and higher than the first supply portion.

Claims21

Dependent claims

A vehicle drive system comprising:

a dynamo electric machine;
and
a case that accommodates the dynamo electric machine, wherein
the case is disposed on at least one axial side with respect to the dynamo electric machine, and includes a wall portion overlapping the dynamo electric machine which has a section that overlaps with the dynamo electric machine as viewed from the axial direction, wherein
the wall portion overlapping the dynamo electric machine includes a supply flow passage through which lubricating-cooling fluid flows, and which is formed with a first supply portion that is a portion supplying lubricating-cooling fluid to a rotor support bearing that supports a rotor of the dynamo electric machine,
the first supply portion includes a throttle portion whose flow passage cross-sectional area is small compared to an upstream-side flow passage cross-sectional area in the flow direction of lubricating-cooling fluid, and
the supply flow passage includes a second supply portion that is a portion supplying lubricating-cooling fluid to the dynamo electric machine and higher than the first supply portion.

4 more elements

Dependencies are inferred from the claim text.

Facts

Application: 13/107,203Filed 13 May 2011
Priority: JP 2010-1312168 Jun 2010
Published: 8 Dec 2011
Term ends: Not estimatedThe source records don’t support an estimate.

Classification6 codes

B60K 6/405
Characterised by the assembly or relative disposition of components: housings
H02K 7/006
Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical…:…
H02K 9/19
Arrangements for cooling or ventilating: for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil
B60K 2001/003
Arrangement or mounting of electrical propulsion units: with means for cooling the electrical propulsion units