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:
Mar. 30, 2004
Filed:
Nov. 18, 2002
Yasuki Tamura, Tokyo, JP;
Kojiro Okada, Tokyo, JP;
Tomohiro Ohashi, Tokyo, JP;
Naoto Yamada, Tokyo, JP;
Kazuo Koga, Tokyo, JP;
Mitsubishi Jidosha Kogyo Kabushiki Kaisha, Tokyo, JP;
Abstract
An exhaust passage ( ) of an internal-combustion engine ( ) is provided with an exhaust emission control unit ( ) capable of reducing harmful substances in exhaust gas under a given exhaust pressure condition and an exhaust sensor ( ) for detecting the concentration of a specific exhaust component (H , O ) in the exhaust gas, and a performance lowering identifying unit identifies lowering of the performance of the exhaust emission control ( ) by detecting a failure to fulfill the given exhaust pressure condition in accordance with the output of the exhaust sensor.