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:
Oct. 02, 1990
Filed:
Sep. 26, 1989
Applicant:
Inventor:
Masahira Akasu, Himeji, JP;
Assignee:
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
G01M / ;
U.S. Cl.
CPC ...
73116 ; 123414 ; 36443105 ;
Abstract
A signal control generator for a multi-cylinder internal combustion engine has a position sensor which generates output pulses which indicate prescribed rotational angles of the crankshaft of the engine for each cylinder. The output pulse for a prescribed reference cylinder of the engine is shorter than the pulses for the other cylinders. The reference cylinder is recognized by comparing the pulse width or the duty cycle of each pulse with the pulse width or the duty cycle for previous pulses corresponding to other cylinders of the engine. The period between consecutive output pulses is used to control the ignition timing of the engine.