EXHAUST EMISSION CONTROL DEVICE AND EXHAUST EMISSION CONTROL METHOD

PROBLEM TO BE SOLVED: To provide an exhaust emission control system and an exhaust emission control method, for solving a problem of accumulation of HC caused by long-time idling operation and thereby to minimize degradation in driveability or fuel economy along with HC separation control. SOLUTION:...

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Bibliographische Detailangaben
Hauptverfasser:	ONODERA TAKAO, MASUKO TATSUO, IKEDA TAKUJI, NAKATANI KENICHI
Format:	Patent
Sprache:	eng
Schlagworte:	BLASTING COMBUSTION ENGINES CONTROLLING COMBUSTION ENGINES ENGINE PLANTS IN GENERAL GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNALCOMBUSTION ENGINES GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES ORENGINES IN GENERAL HEATING HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS LIGHTING MACHINES OR ENGINES IN GENERAL MECHANICAL ENGINEERING PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL SEPARATION STEAM ENGINES TRANSPORTING WEAPONS
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide an exhaust emission control system and an exhaust emission control method, for solving a problem of accumulation of HC caused by long-time idling operation and thereby to minimize degradation in driveability or fuel economy along with HC separation control. SOLUTION: The exhaust emission control system 10 of a vehicle has an exhaust gas treatment device 3 which includes either or both of an oxidation catalyst 3a or/and a diesel particulate filter 3b and is disposed to an exhaust passage of the internal combustion engine. A control device has an HC separation control means performing an HC separation control for burning and removing HC accumulated in the exhaust gas treatment device when an intake air temperature Tin detected by an intake air temperature detection means 32A is a predetermined determination temperature T0 or lower and a duration time of an idling state exceeds a predetermined determination value. COPYRIGHT: (C)2006,JPO&NCIPI