Vehicle engine with turbine bypass for exhaust treatment device warm-up
US4244187A · kind A · utility
17Cited by
1References
12Claims
0Family size
Inventors
Key dates
| Filing date | Mar 30, 1979 |
| Grant date | Jan 13, 1981 |
| Priority date | — |
| Expiry date | Mar 30, 1999 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/12
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
In a preferred embodiment applied to an automotive vehicle engine with an exhaust turbocharger and an exhaust treatment device operative at elevated temperature and located after the turbine in the exhaust system, warm-up of the treatment device is speeded by a bypass system and valve that cuts off exhaust gas flow through the turbine and supplies the engine exhaust directly to the treatment device until its operating temperature is reached, after which the bypass is closed and normal flow through the turbine is provided. Additional features are also described.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.