Evaporative emission system integrity module

Details Evaporative emission system integrity module Evaporative emission system integrity module

2006-05-23

2006-05-23

Gimie, Mahmoud (Department: 3747)

Internal-combustion engines

Charge forming device

Fuel flow regulation between the pump and the charge-forming...

C123S518000

Reexamination Certificate

active

07047950

ABSTRACT:
An evaporative emission control and leak detection system for a motor vehicle is provided. The system is in fluid communication with a fuel tank, an engine, and a carbon canister and includes an integrated valve module that is in fluid communication with the carbon canister and the atmosphere. The module provides for venting of the system when exposed to predetermined high negative and positive pressure conditions. The module includes a switch mechanism that is operable to indicate when the system is in a low negative pressure condition. The module further includes a one-way high negative pressure valve and a one-way high positive pressure valve coupled to a fluid passage that bypasses the high negative pressure valve and the switch. The high negative and high positive pressure valves are positioned in a stacked arrangement along a common axis in the valve module.

REFERENCES:
patent: 4308841 (1982-01-01), Kingsley
patent: 5383437 (1995-01-01), Cook et al.
patent: 5437257 (1995-08-01), Giacomazzi et al.
patent: 5474050 (1995-12-01), Cook et al.
patent: 5635630 (1997-06-01), Dawson et al.
patent: 6073487 (2000-06-01), Dawson
patent: 6328021 (2001-12-01), Perry et al.
patent: 6823850 (2004-11-01), Hurley

Affiliated with

Also associated with

Rating

Evaporative emission system integrity module does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Evaporative emission system integrity module, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Evaporative emission system integrity module will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3598694