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:
Dec. 23, 2008
Filed:
Jan. 31, 2007
Justin F. Adams, Ypsilanti, MI (US);
Louis A. Avallone, Milford, MI (US);
Dale W. Mckim, Howell, MI (US);
Jeffrey A. Sell, West Bloomfield, MI (US);
John W. Siekkinen, Novi, MI (US);
Julian R. Verdejo, Farmington, MI (US);
Justin F. Adams, Ypsilanti, MI (US);
Louis A. Avallone, Milford, MI (US);
Dale W. McKim, Howell, MI (US);
Jeffrey A. Sell, West Bloomfield, MI (US);
John W. Siekkinen, Novi, MI (US);
Julian R. Verdejo, Farmington, MI (US);
GM Global Technology Operations, Inc., Detroit, MI (US);
Abstract
A control system for an oxygen sensor heater is provided. The control system includes a passive heater control module that generates a heater control signal at a first duty cycle and measures a resistance of the oxygen sensor heater. An exhaust gas temperature mapping module maps the resistance to an exhaust gas temperature. An active heater control module generates a heater control signal at a second duty cycle based on the exhaust gas temperature.