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:
Feb. 20, 2007
Filed:
Apr. 13, 2005
Robert a Rimkus, Macomb, MI (US);
J. David Rosa, Clarkston, MI (US);
Robert A Rimkus, Macomb, MI (US);
J. David Rosa, Clarkston, MI (US);
GM Global Technologies Operations, Inc., Detroit, MI (US);
Abstract
Methods and apparatus are provided for determining the cause of tire pressure change. The method includes obtaining a first tire pressure (P) at a first tire temperature (T) and obtaining a measured second tire pressure (P) at a second tire temperature (T). The tire pressure is then estimated (P) at the second tire temperature (T) and the estimated tire pressure (P) is compared to the second tire pressure (P). A diagnostic message is then generated indicative of the cause of tire pressure change, the diagnostic message being responsive to the comparing of the measured second tire pressure (P) with the estimated tire pressure (P).