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:
Oct. 12, 1999
Filed:
Feb. 12, 1998
Darren Schumacher, Ypsilanti, MI (US);
Marvin Lynch, Detroit, MI (US);
Donald J Remboski, Jr, Dearborn, MI (US);
Motorola Inc., Schaumburg, IL (US);
Abstract
A system and method of detecting a leak in an evaporative emissions system for a vehicle includes measuring a physical disturbance of the vehicle with a sensory system and providing a sensory signal (311, 313, 315). Then, comparing the sensory signal (311, 313, 315) to a threshold (405) and generating a diagnosis signal (407, 413) having a 'valid test' state, when the sensory signal does not exceed the threshold, and generating the diagnosis signal having an 'invalid test' state, when the sensory signal exceeds the threshold. And, executing an evaporative emissions system leak test while the provided diagnosis signal indicates the 'valid test' state, and aborting the evaporative emissions system leak test (505) when the diagnosis signal indicates the 'invalid test' state.