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. 07, 1993
Filed:
Sep. 21, 1992
Applicant:
Inventors:
Hiroya Ohkumo, Tokyo, JP;
Syuuzi Miyama, Tokyo, JP;
Masakatsu Fujishita, Ibaragi, JP;
Makoto Tamura, Ibaragi, JP;
Assignees:
Fuji Jukogyo Kabushiki Kaisha, Tokyo, JP;
Hitachi, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F02D / ;
U.S. Cl.
CPC ...
123414 ; 123478 ; 123643 ;
Abstract
A crank angle and cylinder number detecting system for an engine has a disc secured to a camshaft of the engine and, a plurality of projections are formed on a periphery of the disc. A sensor is provided adjacent the disc so as to produce pulses. A pattern of interval arrangement of pulses is determined. From the determined pattern, a crank angle of the engine and a cylinder number are precisely determined in a short time.