METHOD AND DEVICE FOR DETECTING MISFIRE OF INTERNAL COMBUSTION ENGINE

PURPOSE: To reduce operation processes without deteriorating precision of misfire detection, and to improve detection precision in detection of misfires in an internal combustion engine of an automobile. CONSTITUTION: In a method of detecting misfires in an internal combustion engine of an automobil...

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Bibliographische Detailangaben
Hauptverfasser:	MARUTEIN KURENKU, BUINFURIITO MOOZERU
Format:	Patent
Sprache:	eng
Schlagworte:	BLASTING COMBUSTION ENGINES COMBUSTION ENGINES IN GENERAL CONTROLLING COMBUSTION ENGINES HEATING HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS IGNITION, OTHER THAN COMPRESSION IGNITION, FORINTERNAL-COMBUSTION ENGINES INTERNAL-COMBUSTION PISTON ENGINES LIGHTING MEASURING MECHANICAL ENGINEERING PHYSICS TESTING TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES TESTING STATIC OR DYNAMIC BALANCE OF MACHINES ORSTRUCTURES TESTING STRUCTURES OR APPARATUS NOT OTHERWISE PROVIDED FOR WEAPONS
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Beschreibung
Zusammenfassung:	PURPOSE: To reduce operation processes without deteriorating precision of misfire detection, and to improve detection precision in detection of misfires in an internal combustion engine of an automobile. CONSTITUTION: In a method of detecting misfires in an internal combustion engine of an automobile, detection of misfires is stopped between generation of specified conditions and elimination of the specified conditions. In this case, purely logical conditions are discriminated from conditions related to traveling conditions and operating conditions. The purely logical conditions are those to prohibit detection of misfires in principle during a specified number of ignition strokes in specified conditions after a misfire (s3, s4). Examples of the traveling conditions in which detection of misfires is prohibited include traveling on a bumpy road (s7). The operating conditions to disconnect misfire detection include those with rapid fluctuation of a load or a rotation number, or with an extremely large or small rotation number (s9). By disconnecting discrimination of misfires in these conditions, operation processes can be decreased, and misfire detection precision can be improved.