Electric motor assist for transmission electric oil pump
US8795118B2 · kind B2 · utility
4Cited by
1References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 1, 2012 |
| Grant date | Aug 5, 2014 |
| Priority date | — |
| Expiry date | May 17, 2032 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/62
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A method for assisting a transmission oil pump in a hybrid electric powertrain to generate transmission oil pressure rapidly during vehicle start. An electric motor is initially utilized to provide momentary torque to rotate an oil pump and rapidly generate transmission oil pressure. After initial assistance is provided by the electric motor, an oil pump electric motor powers the oil pump and maintains oil pressure within the hybrid powertrain.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.