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:
Feb. 14, 1995
Filed:
Dec. 08, 1993
Applicant:
Inventors:
Shigetaka Kuroda, Wako, JP;
Yoichi Iwata, Wako, JP;
Assignee:
Honda Giken Kogyo K.K., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01M / ;
U.S. Cl.
CPC ...
731181 ;
Abstract
A device for detecting deterioration of a catalyst temperature sensor which detects the temperature of a three-way catalyst arranged in the exhaust pipe of an internal combustion engine, judges that the sensor has deteriorated when the difference between the actual output value from the catalyst temperature sensor and a reference value based on predetermined engine operating parameters exceeds a predetermined value while the engine is in a predetermined operating condition.