Leak diagnosis system for evaporative emission control system

Details Leak diagnosis system for evaporative emission control system Leak diagnosis system for evaporative emission control system

1993-12-17

1995-09-12

Moulis, Thomas N.

Internal-combustion engines

Charge forming device

Having fuel vapor recovery and storage system

123198D, F02M 3304, F02B 7700

Patent

active

054489806

ABSTRACT:
A leak diagnosis system is provided for diagnosing a leak condition of an evaporative emission control system for an internal combustion engine. The leak diagnosis system receives a signal indicative of a pressure in the evaporative emission system and obtains a converged limit negative pressure in the evaporative emission control system when the evaporative emission control system is communicated with the operating engine. The leak diagnosis system diagnoses a leak condition by comparing the converged limit negative pressure with a leak decision value.

REFERENCES:
patent: 5158054 (1992-10-01), Otsuka
patent: 5191870 (1993-03-01), Cook
patent: 5193512 (1993-03-01), Steinbrenner et al.
patent: 5261379 (1993-11-01), Lipinski et al.
patent: 5275144 (1994-01-01), Gross
patent: 5295472 (1994-03-01), Otsuka et al.
patent: 5297529 (1994-03-01), Cook et al.
California Air Resources Board (Carb) Techenical Support Document--(OBD II) Released Jul. 26, 1991 pp. ii-1, 12-15.

Affiliated with

Also associated with

Rating

Leak diagnosis system for evaporative emission control system does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Leak diagnosis system for evaporative emission control system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Leak diagnosis system for evaporative emission control system will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-400944