CONTROL METHOD OF EXHAUST GAS PURIFICATION SYSTEM AND EXHAUST GAS PURIFICATION SYSTEM

In regeneration control in a manual regeneration mode, when a first exhaust gas temperature (Tg1) of an exhaust gas flowing into an oxidation catalyst device (12a) is higher than a predetermined determining temperature (Tc1) and an exhaust gas temperature (Tg2) flowing into a DPF device (12b) is hig...

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Bibliographische Detailangaben
Hauptverfasser:	IKEDA, SHIGERU, ONODERA, TAKAO, MASHIKO, TATSUO, IKEDA, TAKASHI
Format:	Patent
Sprache:	eng ; fre ; ger
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:	In regeneration control in a manual regeneration mode, when a first exhaust gas temperature (Tg1) of an exhaust gas flowing into an oxidation catalyst device (12a) is higher than a predetermined determining temperature (Tc1) and an exhaust gas temperature (Tg2) flowing into a DPF device (12b) is higher than a predetermined determining temperature (Tc2) and when an intake temperature (Ta) becomes higher than a predetermined third determining temperature (Tc3), second exhaust gas temperature control carrying out post injection in addition to multi injection is stopped and switched to third exhaust gas temperature rise control carrying out the post injection in addition to normal injection. Thus, in the regeneration control in the manual regeneration mode of a continuous regeneration type DPF device (12) of an engine(10), temperature rise of an engine cooling water can be restricted without stopping an air conditioner, and possible overheat of the engine (10) can be prevented.