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:
Aug. 10, 2004
Filed:
Feb. 03, 2003
Hidetoshi Kobayashi, Anjo, JP;
Ken Uchiyama, Toyoake, JP;
Denso Corporation, Kariya, JP;
Abstract
A crank sensor outputs a crank signal including an angle indicating part and a reference position indicating part. A cam sensor outputs a cam signal including an angle indicating part and a reference position indicating part. A microcomputer executes a cylinder determining processing using the crank signal alone, and also executes a cylinder determining processing using the cam signal alone. In addition, the microcomputer detects abnormality of the crank signal and the cam signal. The cylinder determining processing using the crank signal alone is prohibited when both the crank signal and the cam signal become abnormal while operating the engine. Then, the prohibition of the cylinder determining processing is withdrawn on the condition that the cam signal is recovered to normal.