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:
Jun. 21, 1994
Filed:
Dec. 22, 1992
Takashi Hisaki, Wako, JP;
Yuichi Shimasaki, Wako, JP;
Shigeki Baba, Wako, JP;
Masaki Kanehiro, Wako, JP;
Shigeru Maruyama, Wako, JP;
Takuji Ishioka, Wako, JP;
Kazuhito Kakimoto, Wako, JP;
Masataka Chikamatsu, Wako, JP;
Kenichi Maeda, Wako, JP;
Shukoh Terata, Wako, JP;
Honda Giken Kogyo Kabushiki Kaisha, Tokyo, JP;
Abstract
A misfire-detecting system for an internal combustion engine detects values of operating parameters of the engine, determines ignition timing of the engine, based upon detected values of operating parameters of the engine to generate an ignition command signal indicative of the determined ignition timing, generates high voltage for causing generation of sparking voltage across a spark plug for discharging the spark plug, according to the ignition command signal, detects a value of the sparking voltage generated across the spark plug when the high voltage is generated, compares the detected value of the sparking voltage with a predetermined reference value, and determines whether or not a misfire has occurred in the engine, based upon results of the comparison. It is determined that the system is abnormal, when it is determined that no misfire has occurred while fuel supply to the engine is being interrupted.