Two-stage ORVR control valve

Details Two-stage ORVR control valve Two-stage ORVR control valve

1996-12-18

1999-01-19

Jacyna, J. Casimer

Fluent material handling, with receiver or receiver coacting mea

Diverse fluid containing pressure filling systems involving...

Filling with exhausting the receiver

141 44, 141 46, 141302, 141198, 137 43, 137202, F16K 1704

Patent

active

058604588

ABSTRACT:
An onboard vapor recovery system for a vehicle fuel system having a fuel tank, a filler neck dynamically sealed by high pressure fuel flow from a filler nozzle, and a vapor recovery apparatus such as a carbon canister. The system includes a liquid level operated control valve which shuts off refueling with a two-stage closing operation providing an initial soft shutoff and a final shutoff. The system also preferably includes a valve in the fuel tank to maintain a predetermined pressure head sufficient to hold the system closed against further refueling at least temporarily, and a positive action, one-way check valve in the lower end of the filler pipe to prevent spitback of fuel from the pressurized tank once refueling has ceased.

REFERENCES:
patent: 5014742 (1991-05-01), Covert et al.
patent: 5028244 (1991-07-01), Szlaga

Affiliated with

Also associated with

Rating

Two-stage ORVR control 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 ORVR control valve, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Two-stage ORVR control valve will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1240386