Apparatus for preventing after-fire in an internal combustion engine
US4098241A · kind A · utility
7Cited by
9References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 28, 1976 |
| Grant date | Jul 4, 1978 |
| Priority date | — |
| Expiry date | Dec 28, 1996 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/7749
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
Disclosed is an apparatus having an air control valve for introducing an amount of air into the intake system of an internal combustion engine when the engine begins to decelerate, for preventing after-fire of an unburnt air-fuel mixture in the catalytic converter arranged in an exhaust pipe of the engine. The apparatus further includes a temperature detecting valve adapted for stopping the operation of the flow control valve during engine warm-up operations. Therefore, introduction of air into the intake system is stopped even if the engine begins to decelerate and, also, a proper engine warm-up operation can be carried out.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.