Evaporative emission system integrity module

Details Evaporative emission system integrity module Evaporative emission system integrity module

2005-08-16

2005-08-16

Game, Mahmoud (Department: 3747)

Internal-combustion engines

Charge forming device

Having fuel vapor recovery and storage system

C123S516000

Reexamination Certificate

active

06928991

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 the system is exposed to predetermined high negative and positive pressure conditions, and a predetermined low negative pressure condition. The module also includes a switch that is operable to indicate when the system is in a high or low negative pressure condition for leak detection verification of the system.

REFERENCES:
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patent: 5474050 (1995-12-01), Cook et al.
patent: 6073487 (2000-06-01), Dawson
patent: 6328021 (2001-12-01), Perry et al.
patent: 6823850 (2004-11-01), Hurley

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