Method and apparatus for cooling and lubricating a hybrid transmission
US7247112B2 · kind B2 · utility
7Cited by
6References
15Claims
0Family size
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Key dates
| Filing date | Feb 17, 2005 |
| Grant date | Jul 24, 2007 |
| Priority date | — |
| Expiry date | Aug 15, 2025 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H57/0482
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A method and apparatus for efficiently cooling and lubricating rotating components in a hybrid transmission is provided. By efficiently managing cooling flow to and between the rotating elements, flow requirements and associated pumping requirements within the drive unit are minimized. In addition, by providing a method for placing the fluid directly on the required components, spin losses associated with component contact with stray oil are reduced. Combined, the reduction in pumping and spin losses create a more efficient drive unit and an overall more efficient hybrid drive system which directly leads to higher fuel economy.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.