EXHAUST GAS PURIFICATION SYSTEM FOR AN INTERNAL COMBUSTION ENGINE

An exhaust gas purification system comprises a first fuel supply unit to supply fuel to exhaust gas flowing in an exhaust passage by a supply valve arranged in the exhaust passage, and a second fuel supply unit to supply fuel to exhaust gas by adjusting a fuel injection condition, wherein in a tempe...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
Hauptverfasser:	NAKAYAMA, Shigeki, TAKADA, Keishi, MATSUO, Junichi, MIKAMI, Akira, OHASHI, Nobumoto
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 STEAM ENGINES WEAPONS
Online-Zugang:	Volltext bestellen
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Beschreibung
Zusammenfassung:	An exhaust gas purification system comprises a first fuel supply unit to supply fuel to exhaust gas flowing in an exhaust passage by a supply valve arranged in the exhaust passage, and a second fuel supply unit to supply fuel to exhaust gas by adjusting a fuel injection condition, wherein in a temperature raising stage of the NOx SCR catalyst associated with the exhaust gas temperature raising processing, first control is performed in which fuel is supplied by the first fuel supply unit, and in a temperature holding stage of the NOx SCR catalyst associated with the exhaust gas temperature raising processing, at least second control is performed in which the ratio of an amount of fuel supply by the second fuel supply unit with respect to an amount of fuel supply by the first fuel supply unit becomes higher in comparison with that when performing the first control.