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:
Dec. 23, 1997
Filed:
Apr. 22, 1996
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
A controller for a four-stroke cycle internal-combustion engine, which has a single sensor mounted on a crankshaft and employs a single sequence of position signal pulses corresponding to crank angles, achieves reduced cost and higher accuracy even for an engine with an odd number of cylinders. For each revolution of the crankshaft, a position signal pulse is issued from the sensor mounted on the crankshaft; the position signal pulse includes a reference position signal pulse in a number which is a multiple of N of the number of cylinders and a cylinder identifying signal pulse for a particular cylinder every time the crankshaft rotates. A control means includes a reference position signal generating section for identifying the reference position of each cylinder from the position signal pulse and for generating the reference position signal; a cylinder identifying section for identifying each cylinder from the position signal pulse and for generating a cylinder identifying signal; and a timing control section for generating a control signal for each cylinder in accordance with the reference position signal and the cylinder identifying signal. The control signal controls at least the ignition timing or the fuel injection timing of each cylinder.