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:
Sep. 06, 2011
Filed:
Feb. 24, 2009
Igor Anilovich, Walled Lake, MI (US);
John W. Siekkinen, Novi, MI (US);
Michael John Dokter, Okemos, MI (US);
Jens Vollstaedt, Eppstein, DE;
Michael Schellong, Russelsheim, DE;
Per-olof Blom, Trollhattan, SE;
Igor Anilovich, Walled Lake, MI (US);
John W. Siekkinen, Novi, MI (US);
Michael John Dokter, Okemos, MI (US);
Jens Vollstaedt, Eppstein, DE;
Michael Schellong, Russelsheim, DE;
Per-Olof Blom, Trollhattan, SE;
Abstract
An engine control module includes an exhaust heating module, a temperature determination module, and a resistance measuring module. The exhaust heating module operates an engine at a predetermined speed to generate an exhaust gas having a predetermined temperature. The exhaust gas heats a heating element of an oxygen sensor. The temperature determination module determines, based on the predetermined speed, when the heating element is heated to the predetermined temperature. The resistance measuring module determines a resistance of the heating element when the heating element is heated to the predetermined temperature.