Method and device for adjusting engine exhaust gas recirculation control
US3963011A · kind A · utility
15Cited by
4References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 25, 1974 |
| Grant date | Jun 15, 1976 |
| Priority date | — |
| Expiry date | Jul 25, 1994 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/40
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
The actual air-fuel ratio of a combustible mixture supplied to an engine is sensed and is compared with a set desired air-fuel ratio which corresponds to a desired ratio of the amount of engine exhaust gases recirculated into the intake system upstream of the carburetor to that of intake air drawn into the engine. An exhaust gas recirculation control valve is operated in dependence on the difference between the actual and desired air-fuel ratios to change the flow of exhaust gases to control the actual ratio of the amount of exhaust gases recirculated into the intake system to that of engine intake air to the desired ratio.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.