EXHAUST EMISSION CONTROL DEVICE FOR CYLINDER INJECTION TYPE ENGINE WITH TURBO SUPERCHARGER

PROBLEM TO BE SOLVED: To restrict the lowering of SOx emission control effect by supplying a SOx reducing agent at a high temperature of the catalyst when emitting SOx, giving consideration to reduction of the SOx reducing agent due to agitation by a turbo supercharger. SOLUTION: When controlling th...

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Bibliographische Detailangaben
Hauptverfasser:	FUJII MOTOKIMI, TAGA JUNICHI
Format:	Patent
Sprache:	eng
Schlagworte:	BLASTING CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TOTRANSPORTATION COMBUSTION ENGINES COMBUSTION ENGINES IN GENERAL 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 GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS HEATING HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS INTERNAL-COMBUSTION PISTON ENGINES LIGHTING MACHINES OR ENGINES IN GENERAL MECHANICAL ENGINEERING STEAM ENGINES TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE WEAPONS
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To restrict the lowering of SOx emission control effect by supplying a SOx reducing agent at a high temperature of the catalyst when emitting SOx, giving consideration to reduction of the SOx reducing agent due to agitation by a turbo supercharger. SOLUTION: When controlling the sulfur poisoning recovery, the nearly same fuel is used for injection in a compression stroke and an expansion stroke, and operation is performed at a theoretical air-fuel ratio to raise the temperature of a NOx trap catalyst to about 650 deg.C in early time. When the catalyst reaches a desirable temperature, a fuel rate in the compression stroke is increased in relation to the fuel in the expansion stroke, and while the air-fuel ratio is changed to rich to lower the oxygen thickness in the exhaust gas and restrict the agitating effect, and HC necessary for reduction of sulfur is supplied.