DRIVE CONTROL METHOD FOR GLOW PLUGS

To suppress deterioration caused by thermal stress without sacrificing the required maximum temperature. At a time when post glow of ceramic glow plugs 50-1 to 50-n ends, when it has been determined that a cooling state inside a combustion chamber of an engine is not in a predetermined strong coolin...

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Bibliographische Detailangaben
Hauptverfasser:	CHO, KAN, TOYOSHIMA, YASUO, TANAKA, ARIHITO
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	BLASTING COMBUSTION APPARATUS COMBUSTION ENGINES COMBUSTION PROCESSES CONTROLLING COMBUSTION ENGINES EXTINGUISHING-DEVICES HEATING HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS IGNITION IGNITION, OTHER THAN COMPRESSION IGNITION, FORINTERNAL-COMBUSTION ENGINES LIGHTING MECHANICAL ENGINEERING TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES WEAPONS
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Beschreibung
Zusammenfassung:	To suppress deterioration caused by thermal stress without sacrificing the required maximum temperature. At a time when post glow of ceramic glow plugs 50-1 to 50-n ends, when it has been determined that a cooling state inside a combustion chamber of an engine is not in a predetermined strong cooling state for a first predetermined amount of time or longer, post glow energization is stopped (S106, S112), but when it has been determined that the cooling state inside the combustion chamber of the engine is in the predetermined strong cooling state for the first predetermined amount of time or longer, a preset post glow extension voltage-use map is used to obtain a voltage when extending post glow energization, and post glow energization extension is started using that voltage, and thereafter, when it has been determined that the cooling state inside the combustion chamber of the engine is transitioning from the predetermined strong cooling state to an abated state for a second predetermined amount of time or longer, post glow energization extension is stopped (S108, S110), to thereby alleviate thermal stress and suppress ceramic heater deterioration.