Exhaust gas recirculation valve malfunction indicator apparatus
US4044734A · kind A · utility
1Cited by
4References
5Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 28, 1976 |
| Grant date | Aug 30, 1977 |
| Priority date | — |
| Expiry date | May 28, 1996 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01L1/34
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An internal combustion engine provided with an exhaust gas recirculating (EGR) system containing a vacuum/electric switch assembly activated in response to a non-movement type malfunction of the EGR valve to energize a warning light.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.