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. 16, 1997
Filed:
Jul. 06, 1995
Yoichi Kadota, Himeji, JP;
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
When a malfunction determination mode for a fuel-evaporated-gas processing device is employed (step S1), an engine control unit 9A determines whether a malfunction of an O.sub.2 sensor 10 is being checked or not (step S2). When a malfunction of the O.sub.2 sensor 10 is being checked, the determination of a malfunction of the O.sub.2 sensor 10 is executed (step S4) without determining a malfunction of the fuel-evaporated-gas processing device. When the O.sub.2 sensor 10 malfunctions, a processing to be taken when the O.sub.2 sensor 10 malfunctions is executed (step S8) and a warning lamp is turned on (step S9). With this operation reliability in the determination of a malfunction of the fuel-evaporated-gas processing device can be improved without employing a countermeasure such as an increase of the number of determinations and the like.