Leak tester and leak testing method

Details Leak tester and leak testing method Leak tester and leak testing method

1997-03-21

1998-08-18

Williams, Hezron E.

Measuring and testing

With fluid pressure

Leakage

73 492, G01M 326

Patent

active

057959951

ABSTRACT:
This invention relates to a leak tester for testing the tightness of a test object such as a fuel feed apparatus for an internal combustion engine, and specifically to a leak tester for testing the air tightness of a fuel feed apparatus provided with a first opening and a second opening and having a space portion between the first and second openings. The leak tester is provided with a master (reference chamber) having substantially the same internal volume as the fuel feed apparatus, a pneumatic pressure source for supplying air of a predetermined pressure to the test object through the first opening and also to the master, a differential pressure leak tester for measuring a pressure difference between a pressure of the fluid within the test object and that within the master, and a flow meter for measuring a flow rate of air flowing out of the fuel feed apparatus through the second opening; and the leak tester detects leakage of air from the test object other than that through the second opening on a basis of the pressure difference and the flow rate.

REFERENCES:
patent: 4686851 (1987-08-01), Holm et al.
patent: 4811252 (1989-03-01), Furuse
patent: 5081864 (1992-01-01), Zaim
patent: 5120129 (1992-06-01), Farquharson et al.
patent: 5146902 (1992-09-01), Cook et al.
patent: 5347848 (1994-09-01), Schoeffel et al.
patent: 5367797 (1994-11-01), Zaim
patent: 5412978 (1995-05-01), Boone et al.
patent: 5546789 (1996-08-01), Balke et al.
patent: 5600996 (1997-02-01), Witschi
patent: 5624551 (1997-04-01), Baumann et al.

Affiliated with

Also associated with

Rating

Leak tester and leak testing method 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 tester and leak testing method, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Leak tester and leak testing method will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1115911