Method and apparatus for the automated testing of vehicle fuel evaporation control systems

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United States of America Patent

PATENT NO 5239858
SERIAL NO

07839318

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Abstract

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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.

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Patent Owner(s)

Patent OwnerAddress
ENVIRONMENTAL SYSTEMS PRODUCTS INC7 KRIPES ROAD EAST GRANBY CT 06026

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Rogers, John N Tucson, AZ 5 104
Timmerman, George Tucson, AZ 1 28

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