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. 29, 1998
Filed:
Jul. 08, 1997
Robert J Nankee, II, Canton, MI (US);
George C Mitchell, Brighton, MI (US);
Mark E McMackin, Royal Oak, MI (US);
Chrysler Corporation, Auburn Hills, MI (US);
Abstract
A method of measuring temperature of a catalytic converter in a motor vehicle includes the step of determining a first oxygen sensing mechanism output, determining if it is time to determine a second oxygen sensing mechanism output, and determining the second oxygen sensing mechanism output if it is time to determine the second oxygen sensing mechanism output. The method also includes the step of determining a change in oxygen sensing mechanism output by taking a difference between the first oxygen sensing mechanism output and the second oxygen sensing mechanism output. The method further includes the step of finding a catalytic converter temperature in a look-up table using the change in oxygen sensing mechanism output, and using the catalytic converter temperature as needed by an electronic control mechanism to operate an engine of the motor vehicle.