US Patent No: 5,237,279

Number of patents in Portfolio can not be more than 2000

Ignition and fuel system misfire-detecting system for internal combustion engines

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Abstract

A misfire-detecting system for an internal combustion engine detects a value of sparking voltage generated by the igniting device of the engine after generation of an ignition command signal, compares the value of the detected sparking voltage with a predetermined value, and determines whether or not a misfire has occurred in the engine, based upon the result of the comparison. The misfire-detecting system can discriminate between a misfire attributable to the fuel supply system of the engine and one attributable to the ignition system of the engine, from a detected peak value of the sparking voltage.

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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
HONDA GIKEN KOGYO KABUSHIKI KAISHATOKYO, 10710685

International Classification(s)

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  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Arai, Hideaki Saitama, JP 53 397
Chikamatsu, Masataka Wako, JP 24 360
Ishioka, Takuji Saitama, JP 30 264
Kuroda, Shigetaka Saitama, JP 100 1199
Shimasaki, Yuuichi Saitama-ken, JP 8 111

Cited Art

Patent Info (Count) # Cites Year
 
FIAT AUTO S.P.A. (1)
5,017,874 Method and apparatus for detecting and indicating anomalies in the operation of the ignition systems of internal combustion engines 16 1988

Patent Citation Ranking

Forward Cites

Patent Info (Count) # Cites Year
 
HONDA GIKEN KOGYO KABUSHIKI KAISHA (4)
5,349,299 Fuel supply misfire-detecting system for internal combustion engines 10 1992
5,322,045 Misfire-detecting system for internal combustion engines 8 1992
5,327,867 Misfire-detecting system for internal combustion engines 6 1993
5,327,090 Misfire-detecting system for an internal combustion engine which detects a misfire due to the fuel supply system 7 1993
 
ROBERT BOSCH GMBH (2)
5,438,268 Ignition system for detecting arc voltage of spark plug 2 1993
5,821,754 Ignition system for an internal combustion engine 6 1996
 
CATERPILLAR INC. (1)
5,672,972 Diagnostic system for a capacitor discharge ignition system 10 1992
 
DELPHI TECHNOLOGIES, INC. (1)
6,359,439 Compression sense ignition system with fault mode detection and having improved capacitive sensing 5 2000
 
GAS TECHNOLOGY INSTITUTE (1)
5,633,591 Apparatus and method for measuring the breakdown voltage between two electrodes separated by a dielectric 4 1996
 
GENERAL MOTORS CORPORATION (1)
5,636,620 Self diagnosing ignition control 10 1996
 
HITACHI, LTD. (1)
5,396,176 Combustion condition diagnosis utilizing multiple sampling of ionic current 29 1992
 
MITSUBISHI DENKI KABUSHIKI KAISHA (1)
5,548,220 Apparatus for detecting misfire in internal combustion engine 17 1995
 
SNAP-ON TECHNOLOGIES, INC. (1)
5,677,632 Automatic calibration for a capacitive pickup circuit 2 1995
 
THE OHIO STATE UNIVERSITY RESEARCH FOUNDATION (1)
5,687,082 Methods and apparatus for performing combustion analysis in an internal combustion engine utilizing ignition voltage analysis 34 1995
 
UNISON INDUSTRIES, LLC. (1)
5,572,135 Diagnostic apparatus and methods for ignition circuits 2 1994