Measuring and testing – With fluid pressure – Leakage
Patent
1995-08-03
1997-06-10
Brock, Michael
Measuring and testing
With fluid pressure
Leakage
73 492, 73 497, G01M 326
Patent
active
056377886
ABSTRACT:
A apparatus and method of detecting a leak in an evaporative emissions system measures vapor flow out of the evaporative emissions system while maintaining a zero pressure difference from inside a fuel tank to atmosphere and provides a reference vapor flow variable dependent on the measurement (317). A pressurized vapor and leak flow variable is measured (323) dependent on measured vapor flow out of the evaporative emissions system while maintaining a pressure difference of 10" of water from inside the fuel tank to atmosphere. A leak is indicated (327) if a difference between the reference vapor flow variable and the pressurized vapor and leak flow variable is greater than a predetermined leak flow factor.
REFERENCES:
patent: 3465562 (1969-09-01), Donohoe
patent: 3786671 (1974-01-01), Caron
patent: 3800586 (1974-04-01), Delatorre et al.
patent: 3962905 (1976-06-01), Jouve
patent: 4012944 (1977-03-01), Covington et al.
patent: 4012945 (1977-03-01), Bergstrand
patent: 4078421 (1978-03-01), Gastaldo et al.
patent: 4091658 (1978-05-01), Covington et al.
patent: 4144743 (1979-03-01), Covington et al.
patent: 4587619 (1986-05-01), Converse, III et al.
patent: 4660519 (1987-04-01), Stocker et al.
patent: 4663962 (1987-05-01), Tagesson
patent: 4708014 (1987-11-01), Janitz
patent: 4791805 (1988-12-01), Gates
patent: 4854158 (1989-08-01), Gates
patent: 4876530 (1989-10-01), Hill et al.
patent: 4905501 (1990-03-01), Sawatani
patent: 4993256 (1991-02-01), Fukuda
patent: 5107698 (1992-04-01), Gillia
patent: 5187974 (1993-02-01), Mellits et al.
patent: 5408866 (1995-04-01), Kawamura et al.
patent: 5467641 (1995-11-01), Williams et al.
Foley John F.
Plee Steven L.
Remboski Donald J.
Woznick Mark B.
Brock Michael
Hopman Nicholas C.
Motorola Inc.
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