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:
Jul. 17, 2001
Filed:
Dec. 20, 2000
Morio Fujiwara, Tokyo, JP;
Atsuko Hashimoto, Tokyo, JP;
Tatsuhiko Takahashi, Hyogo, JP;
Satoshi Wachi, Tokyo, JP;
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
A control system for an internal combustion engine which can judge and detect a failure of a valve timing changing unit regardless of operating conditions. The system includes a second storage unit,for storing the detection value of an actual valve timing detection unit,when the target advance angle set by a target advance angle setting device,is a predetermined value and updating the storage value, a storage value update inhibiting unit,for inhibiting the update of the storage value of the second storage unit when a change in the storage value updated by a first storage unit,is larger than a predetermined value, and failure judging unit,A for judging a failure of the valve timing changing unit based on the target advance angle set, the detection value of the actual valve timing detection unit and the storage value of the second storage unit.