Integrated electric motor-driven oil pump for automatic transmissions in hybrid applications
US6964631B2 · kind B2 · utility
23Cited by
7References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 24, 2004 |
| Grant date | Nov 15, 2005 |
| Priority date | — |
| Expiry date | Apr 30, 2024 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/62
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
An electric motor is connected solidly to the main transmission oil pump shaft on the transmission case. An off-axis chain and gear are connected to the main oil pump shaft via a single freewheeling clutch, so that either source of torque in a hybrid motor can drive the oil pump or the oil pump can be driven by the electric motor or the hybrid motor depending on which motor is traveling at a higher speed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.