Exhaust gas recirculation system
US4057043A · kind A · utility
7Cited by
9References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 11, 1976 |
| Grant date | Nov 8, 1977 |
| Priority date | — |
| Expiry date | Jun 11, 1996 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02M26/56
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An additional vacuum servo is provided to be associated with a vacuum servo of an air supply control valve controlling the amount of atmospheric air fed into a vacuum actuator of an EGR control valve and is operable, in response to the vacuum in the vacuum actuator reduced by the fed atmospheric air, to minutely adjust the degree of opening of the air supply control valve to minutely adjust the amount of the atmospheric air fed into the vacuum actuator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.