Two-stage high flow purge valve

Details Two-stage high flow purge valve Two-stage high flow purge valve

1991-02-19

1992-01-28

Cross, E. Rollins

Internal-combustion engines

Charge forming device

Having fuel vapor recovery and storage system

123516, 137599, 137907, F02M 3302

Patent

active

050835467

ABSTRACT:
A two-stage high flow purge valve for an evaporative emission system of a vehicle. The valve body contains two valves for controlling fluid flow through separate parallel flow paths in the valve body. A fast-acting, pulse width modulated solenoid valve responsive to an electrical control signal from the engine control computer precisely controls flow through a low flow path, and a vacuum-responsive valve controls flow through a high flow path in accordance with the level of manifold vacuum at the engine intake. A third valve member is provided to block flow through the high flow path when the engine is off and the manifold vacuum is zero. Means for calibrating both the solenoid valve and the vacuum-responsive valves are also provided.

REFERENCES:
patent: 3414336 (1968-12-01), Atkin et al.
patent: 3476146 (1969-11-01), Dolter
patent: 4019533 (1977-04-01), Jerde et al.
patent: 4112898 (1978-09-01), Takimoto et al.
patent: 4377146 (1983-03-01), Oniki et al.
patent: 4503887 (1985-03-01), Johnson et al.
patent: 4628887 (1986-12-01), Mitchell et al.
patent: 4681297 (1987-07-01), Mertz
patent: 4700683 (1987-10-01), Uranishi et al.
patent: 4703737 (1987-11-01), Cook et al.
patent: 4805666 (1989-02-01), Araki et al.
patent: 4809667 (1989-03-01), Uranishi et al.
patent: 4875499 (1989-10-01), Fox
patent: 4901702 (1990-02-01), Beicht et al.
patent: 4932386 (1990-06-01), Vozumi et al.
patent: 4944276 (1990-07-01), House et al.
patent: 4947887 (1990-08-01), Fox
patent: 4951637 (1990-08-01), Cook
patent: 4961412 (1990-10-01), Furuyama
patent: 4995369 (1991-02-01), Cook

Affiliated with

Also associated with

Rating

Two-stage high flow purge valve does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Two-stage high flow purge valve, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Two-stage high flow purge valve will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1854488