Force balanced EGR valve with position feedback
US4662604A · kind A · utility
36Cited by
9References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 30, 1985 |
| Grant date | May 5, 1987 |
| Priority date | — |
| Expiry date | May 30, 2005 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02M26/53
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An EGR valve for an engine comprising: a housing including a plurality of passages for communicating exhaust gas and engine vacuum thereto, for supporting a movable diaphragm-piston assembly, a diaphragm-piston assembly for dividing the housing into an atmospheric chamber and a vacuum chamber, including a user cleanable, outwardly movable valve closure element for selectively sealing one of said passages and means for sensing the position of the assembly.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.