DETECTING METHOD OF COMBUSTION MISFIRE

PROBLEM TO BE SOLVED: To provide a method for further improving reliability of misfire detection in an internal combustion engine having a plurality of cylinders, high rotational speed further with a small load. SOLUTION: Non-uniformity of a rotational motion of a crankshaft of an internal combustio...

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Hauptverfasser:	YUURUGEN FUERUSUTAA, KURAUSU RIISUUMIYUURAA, ANDOREA ROOMAN, MANFUREETO METSUGAA
Format:	Patent
Sprache:	eng
Schlagworte:	BLASTING COMBUSTION ENGINES CONTROLLING COMBUSTION ENGINES HEATING HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS LIGHTING MEASURING MECHANICAL ENGINEERING PHYSICS TESTING TESTING STATIC OR DYNAMIC BALANCE OF MACHINES ORSTRUCTURES TESTING STRUCTURES OR APPARATUS NOT OTHERWISE PROVIDED FOR WEAPONS
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a method for further improving reliability of misfire detection in an internal combustion engine having a plurality of cylinders, high rotational speed further with a small load. SOLUTION: Non-uniformity of a rotational motion of a crankshaft of an internal combustion engine is formed in a first signal (ts (n)), in a method for detecting a combustion misfire operated to be based on the first signal, a second signal (ψ (n)) is generated, the second signal has periodicity, this periodic interval corresponds to a periodic interval between working cycles of the internal combustion engine or corresponds to this periodic interval divided by an integer, this second signal has a fixed phase relation relating to the rotational motion of the crankshaft. This second signal is modulated by a signal with the first signal as the base and filtered, a third signal (q (n)), formed by modulation and filtering, is used for detecting of the combustion misfire and specifying of the cylinder concerned.