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:
Jun. 26, 2012
Filed:
Jul. 06, 2009
Yilu Zhang, Northville, MI (US);
Satish Rajagopalan, Knoxville, TN (US);
Mutasim A. Salman, Rochester Hills, MI (US);
Yilu Zhang, Northville, MI (US);
Satish Rajagopalan, Knoxville, TN (US);
Mutasim A. Salman, Rochester Hills, MI (US);
GM Global Technology Operations LLC, Detroit, MI (US);
Abstract
An embodiment contemplates a method for determining belt slip in a vehicle. The vehicle includes an engine and an alternator rotatably coupled by an accessory drive belt. The accessory drive belt engaging a rotating member of the engine for driving a rotating member of the alternator. A battery voltage is measured. An estimated battery voltage is determined as a function of engine speed. The belt slip of the alternator is detected in response to a comparison of the estimated battery voltage and the measured battery voltage.