Vehicle drive system
US8653704B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 13, 2011 |
| Grant date | Feb 18, 2014 |
| Priority date | — |
| Expiry date | Mar 15, 2032 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60K2001/003
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.