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:
Jul. 24, 2018
Filed:
Mar. 03, 2017
Ford Global Technologies, Llc, Dearborn, MI (US);
Alexander O'Connor Gibson, Ann Arbor, MI (US);
John Eric Rollinger, Troy, MI (US);
David Lew, Canton, MI (US);
David Spuller, Dexter, MI (US);
Veronica Pablo Osorio, Dearborn, MI (US);
Ford Global Technologies, LLC, Dearborn, MI (US);
Abstract
Methods and systems are provided for identifying degradation of a belt-driven integrated starter generator (BISG) active belt tensioner coupled to a vehicle engine. By using the monitored change in FEAD load to compare the actual state of the tensioner (either in retracted or extended state) relative to the commanded state, the presence of excess belt tension may be distinguished from the presence of insufficient belt tension. Timely diagnosis of a belt tensioner may be improve belt health and extend fuel economy benefits of a BISG system.