Exhaust gas recirculation system for diesel engine
US4474008A · kind A · utility
51Cited by
10References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 7, 1983 |
| Grant date | Oct 2, 1984 |
| Priority date | — |
| Expiry date | Apr 7, 2003 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/12
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An exhaust gas recirculation (EGR) system for a diesel engine comprising an EGR control valve for regulating the flow of exhaust gases to be recirculated from an engine exhaust system back to an engine air intake system. When the exhaust gas recirculation is to be interrupted, the EGR control valve is closed a predetermined time after the opening of a throttle valve used in the air intake system for regulating the flow of air towards the engine. For this purpose, delay valves are utilized in association with the throttle valve and the EGR control valve.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.