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:
Apr. 18, 2006
Filed:
Sep. 23, 2003
Paul Perry, Chatham, CA;
Andre Veinotte, Dresden, CA;
Paul Perry, Chatham, CA;
Andre Veinotte, Dresden, CA;
Siemens VDO Automotive, Inc., Chatham, CA;
Abstract
A method of rationalizing the functioning of a fuel vapor pressure management system. The fuel vapor pressure management system is in fluid communication with a headspace of a fuel system, and the fuel system supplies fuel to an internal combustion engine of a vehicle. The method includes providing a fuel vapor pressure management apparatus detecting an absence of leaks with respect to the headspace, counting a number of leak detection tests performed by the fuel vapor pressure management apparatus, counting a number of occurrences of the fuel vapor pressure management apparatus detecting an absence of a leak, and evaluating the number of occurrences within a selected number of tests.