System for assisting regeneration of a storage/release NOx trap for a motor vehicle diesel engine

A system for assisting regeneration of a storage/release NOx trap integrated in an exhaust line (5) of a motor vehicle diesel engine (4) is characterized in that it comprises gas admission means for admitting gas into the engine, means for injecting fuel (11) into the cylinders thereof in the form o...

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Bibliographische Detailangaben
Hauptverfasser:	GASCOIN MICKAEL, MEDIOUN DJAMAL, AMELOOT PIET, BEAUGE YVON, CHAOUCHE ALI
Format:	Patent
Sprache:	eng
Schlagworte:	BLASTING CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TOTRANSPORTATION 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 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 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:	A system for assisting regeneration of a storage/release NOx trap integrated in an exhaust line (5) of a motor vehicle diesel engine (4) is characterized in that it comprises gas admission means for admitting gas into the engine, means for injecting fuel (11) into the cylinders thereof in the form of at least pilot and main injections, and means for controlling (12) said gas admission and/or fuel injection means for periodically switching the engine (4) between a lean-mixture standard operating mode in which NOx is stored in the trap (6) and a rich-mixture regeneration operating mode, with at least two pilot injections (1, 2) and one main injection (3), in which NOx is released from the trap (6) and the trap is regenerated.