초록 ▼

Purging of a fuel vapor storage canister of an internal combustion engine is optimized through the provision of fuel vapor storage apparatus. A real time measurement of the fuel vapor content of the canister is enabled by providing the canister with a fuel vapor sensor located in at least one of the

Purging of a fuel vapor storage canister of an internal combustion engine is optimized through the provision of fuel vapor storage apparatus. A real time measurement of the fuel vapor content of the canister is enabled by providing the canister with a fuel vapor sensor located in at least one of the purge line and the fresh air port of the canister. The fuel vapor sensor is most preferably an adsorption sensitive resistor which operates on the principle of adsorption according to Vander Walls "a" constant, and the electrical resistance of the fuel vapor sensor preferably varies with respect to the fuel vapor concentration present.

대표청구항 ▼

[ We claim:] [1.]1. A fuel vapor storage apparatus for reducing pollutant emissions from an internal combustion engine having a fuel tank, said fuel vapor storage apparatus comprising:a fuel vapor storage canister for storing fuel vapor produced by evaporation of fuel stored in such fuel tank;a purg

[ We claim:] [1.]1. A fuel vapor storage apparatus for reducing pollutant emissions from an internal combustion engine having a fuel tank, said fuel vapor storage apparatus comprising:a fuel vapor storage canister for storing fuel vapor produced by evaporation of fuel stored in such fuel tank;a purge line connecting said fuel vapor storage canister with such internal combustion engine;a fresh air port connecting an interior portion of said fuel vapor storage canister with an ambient atmosphere of such internal combustion engine;said interior portion of said fuel vapor storage canister being in substantially continual communication with such ambient atmosphere of such internal combustion engine through said fresh air port; andan adsorption sensitive resistor for determining a concentration of fuel vapor;said adsorption sensitive resistor being mounted substantially within said fresh air port.