Exhaust gas recirculation valve having integral electronic control
US4694812A · kind A · utility
19Cited by
6References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 21, 1986 |
| Grant date | Sep 22, 1987 |
| Priority date | — |
| Expiry date | Apr 21, 2006 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/40
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An exhaust gas recirculating valve with vacuum motor actuator is integrally combined with an electronic control system having a valve position sensor and an electrically controlled pilot valve for the vacuum motor. The electronic control system responds directly to an externally generated low power voltage signal so that the voltage signal and the valve position are related in a monotonic manner. A signal circuit indicates when the exhaust gas recirculating valve is under command of the externally generated low power voltage signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.