HEATER CURRENT CARRYING CONTROL DEVICE FOR EXHAUST EMISSION CONTROL DEVICE

摘要

PROBLEM TO BE SOLVED: To prevent the excessive rise of a temperature of a minute particle catching filter due to heat generation by current carrying of a heater and combustion heat of exhaust minute particles and prevent damage due to melting of the minute particle catching filter and the heater caused by the excessive rise of the temperature when the caught exhaust minute particles by the heater is performed, in the time so-called regeneration for heating and burning. SOLUTION: In this heater current carrying control device for an exhaust emission control device for heating and burning exhaust minute particles caught when the regeneration is performed by the heater, the current carrying to the heater 11 of the minute particle catching filter 5 during regeneration is intermittently performed.