Method and apparatus for the automated testing of vehicle fuel e

Details Method and apparatus for the automated testing of vehicle fuel e Method and apparatus for the automated testing of vehicle fuel e

1992-02-20

1993-08-31

Williams, Hezron E.

Measuring and testing

With fluid pressure

Leakage

731181, 123518, G01M 320

Patent

active

052398587

ABSTRACT:
A method and apparatus for the testing of a vehicle fuel evaporation control system, which typically includes a fuel tank, vapor adsorption canister and purge valve, consisting of the introduction of a non-reactive gas into the control system and the subsequent monitoring of the engine exhaust during operation for presence of the gas. The operating parameters of the engine may be varied to determine parameter-associated operation of the control system. In addition, the quantity of gas admitted into the system may be compared to that exiting the exhaust to provide a quantitative measurement of the integrity of the control system.

REFERENCES:
patent: 4794790 (1989-01-01), Margarit-Metaxa et al.
patent: 5146902 (1992-09-01), Cook et al.
patent: 5158054 (1992-10-01), Otsuka

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