Pintle-type EGR valve

Details Pintle-type EGR valve Pintle-type EGR valve

1997-03-19

1998-03-03

Lee, Kevin

Valves and valve actuation

Electrically actuated valve

Including solenoid

F16K 3106

Patent

active

057226342

ABSTRACT:
Improvements in a head (44) of a pintle (38) and associated valve seat (34) of an EGR valve (10) for providing a desired geometric relationship between respective tapered surfaces (36c, 104) that close against each other and for reducing tendency for carbon build-up. A blind hole (108) extends centrally axially inward from the lower end face (107) of the pintle head, reducing the mass, and hence thermal inertia, but without affecting the desired geometric relationship of the seat to the pintle head.

REFERENCES:
patent: 3927650 (1975-12-01), Smith et al.
patent: 4056084 (1977-11-01), Baumgartner
patent: 4312319 (1982-01-01), Brakebill
patent: 4351285 (1982-09-01), Bradshaw
patent: 4815706 (1989-03-01), Feuling
patent: 5027781 (1991-07-01), Lewis
patent: 5131624 (1992-07-01), Kreuter et al.
patent: 5435519 (1995-07-01), Everingham
patent: 5460146 (1995-10-01), Frankenberg
patent: 5467962 (1995-11-01), Bircann et al.
Seven-page European Search Report, PCT/CA96/00559 dated Nov. 27, 1996.

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