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:
May. 20, 2014
Filed:
Jun. 28, 2011
Wei D. Wang, Troy, MI (US);
Bon Ho Bae, Torrance, CA (US);
Reynaldo Arturo Suazo Zepeda, Redondo Beach, CA (US);
Satish Godavarthy, La Palma, CA (US);
Wei D. Wang, Troy, MI (US);
Bon Ho Bae, Torrance, CA (US);
Reynaldo Arturo Suazo Zepeda, Redondo Beach, CA (US);
Satish Godavarthy, La Palma, CA (US);
GM Global Technology Operations LLC, Detroit, MI (US);
Abstract
A method for operating a powertrain system including a torque machine mechanically coupled to an internal combustion engine includes, upon detecting a pending fault associated with a power switch configured to control power flow to the torque machine, disabling torque output from the torque machine and executing retry events. The retry events are iteratively executed with a debounce time period preceding each retry event. Presence of a fault associated with the power switch is detected when a quantity of the retry events during a time window exceeds a threshold.