Verfahren zur Abgasentgiftung eines Dieselmotors

According to the method of the present invention, NO (nitrogen monoxide) in the exhaust gas of a diesel engine is first oxidized to NO2 (nitrogen dioxide) by an oxidizing catalyst (5). Further, carbon particles in the exhaust gas are trapped by a DPF (7) (diesel particulate filter). The exhaust gas...

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Bibliographische Detailangaben
Hauptverfasser:	KONDO, TAKUYA, OKAWARA, SEIJI, KOJIMA, KOICHI, MURACHI, MIKIO
Format:	Patent
Sprache:	ger
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 PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL SEPARATION STEAM ENGINES TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE TRANSPORTING WEAPONS
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Beschreibung
Zusammenfassung:	According to the method of the present invention, NO (nitrogen monoxide) in the exhaust gas of a diesel engine is first oxidized to NO2 (nitrogen dioxide) by an oxidizing catalyst (5). Further, carbon particles in the exhaust gas are trapped by a DPF (7) (diesel particulate filter). The exhaust gas containing NO2 formed by oxidation of nitrogen monoxide is, then, fed to the DPF (7), and NO2 in the exhaust gas reacts with the carbon particles trapped in the DPF (7). When the NO2 reacts with carbon particles, carbon particles are oxidized (burned) by NO2 and removed from DPF (7), and, at the same time, NO2 is reduced to NO by the carbon particles. The exhaust gas containing NO formed by the reaction between the carbon particles and NO2 is fed to an NOX absorbent (9). In the NOX absorbent (9), NO is absorbed by the NOX absorbent (9) and, thereby, removed from the exhaust gas. Therefore, according this method, the carbon particles collected by the DPF (7) can be easily burned by NO2, thereby being removed from the DPF (7) without increasing the amount of NO released to the atmosphere.