Fuel vapor leak test system and method comprising successive...

Details Fuel vapor leak test system and method comprising successive... Fuel vapor leak test system and method comprising successive...

2005-10-04

2005-10-04

Garber, Charles (Department: 2856)

Measuring and testing

With fluid pressure

Motor part or auxiliary

Reexamination Certificate

active

06951126

ABSTRACT:
A leak test system and method for a motor vehicle fuel system. A pump forces air under pressure into vapor containment space. The pump operates in accordance with steps established by a processor. The pump creates superatmospheric pressure in the space during an initial charging phase step, and after completion of that step, the pump performs a measurement phase step that forces pulses of air into the space in a succession of pulse bursts. Each burst contains a succession of individual pulses, preferably in equal numbers, and each successive burst is delayed from an immediately prior burst by a time interval substantially longer than the time intervals between individual pulses in each burst, preferably by constant time intervals. The processor processes data corresponding to a measurement of pressure in the space after the occurrence of at least one of such bursts and as a result indicates leakage from the space.

REFERENCES:
patent: 5297529 (1994-03-01), Cook et al.
patent: 5474050 (1995-12-01), Cook et al.
patent: 5606121 (1997-02-01), Blomquist et al.
patent: 5898108 (1999-04-01), Mieczkowski et al.
patent: 5974861 (1999-11-01), Cook et al.
patent: 6044314 (2000-03-01), Cook et al.
patent: 6301955 (2001-10-01), Cook et al.

Affiliated with

Also associated with

Rating

Fuel vapor leak test system and method comprising successive... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Fuel vapor leak test system and method comprising successive..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Fuel vapor leak test system and method comprising successive... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3442392