Exhaust heat recovery for transmission warm-up
US8413434B2 · kind B2 · utility
11Cited by
2References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 21, 2009 |
| Grant date | Apr 9, 2013 |
| Priority date | — |
| Expiry date | Feb 3, 2031 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/12
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An exhaust heat recovery system (EHRS) for a vehicle is provided that is operable to direct coolant heated by exhaust heat to a vehicle transmission under certain operating conditions after the engine is adequately heated by the exhaust heat and without further heating the engine with the exhaust heat. Thus, recovery of exhaust heat is increased as the transmission is heated to a higher operating temperature than the engine using the heated coolant. The EHRS may also operate in a bypass mode during which exhaust heat is not directed to the engine or the transmission. A method of managing exhaust heat is also provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.