The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 25, 2001
Filed:
Mar. 03, 2000
Jonathan M. Oemcke, Rochester, NY (US);
Susan Scott Labine, Avon, NY (US);
Robert Thomas Cook, Rush, NY (US);
Delphi Technologies, Inc., Troy, MI (US);
Abstract
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.