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:
Jan. 09, 2001
Filed:
Jun. 01, 1999
Katsuhiko Kondo, Tokyo, JP;
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
An electronic control unit for an internal combustion engine is able to accurately identify cylinders even in such a case as starting an engine while the engine is still cold or with a deteriorated battery or even if the engine is started hurriedly, or hastened start is repeated. In the electronic control unit that measures the cycle of a signal issued from a crank angle sensor and identifies a cylinder according to a calculated value based on the cycle to control the internal combustion engine, the ratio of a present signal cycle and a previous signal cycle is compared with a judgment value, and cylinder identification is effected based on a time series pattern of the ratio, and the judgment value is changed on the basis of at least one of the temperature of the engine and battery voltage.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile