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.

Date of Patent:
Jul. 13, 1993

Filed:

Oct. 28, 1992
Applicant:
Inventors:

Yuuichi Shimasaki, Wako, JP;

Masataka Chikamatsu, Wako, JP;

Takuji Ishioka, Wako, JP;

Shigetaka Kuroda, Wako, JP;

Hideaki Arai, Wako, JP;

Masaki Kanehiro, Wako, JP;

Takashi Hisaki, Wako, JP;

Shigeru Maruyama, Wako, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F02P / ;
U.S. Cl.
CPC ...
123479 ; 123630 ; 324388 ; 324399 ;
Abstract

A misfire-detecting system for an internal combustion engine detects a value of sparking voltage generated after generation of an ignition command signal, compares the detected value of sparking voltage with a predetermined voltage value, and determines whether or not a misfire has occurred in the engine, based upon results of the comparison. The determination as to occurrence of the misfire is effected, based upon results of the comparison between the detected value of the sparking voltage and the predetermined voltage value, obtained within a previously set limited comparison period.


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