SYSTEM FOR ASSISTING REGENERATION OF A STORAGE/RELEASING NOX TRAP FOR VEHICLE DIESEL ENGINE

This system for assisting regeneration of a storage/release NOx trap integrated into an exhaust system ( 5 ) of a motor vehicle diesel engine ( 4 ) is characterized in that it includes means ( 11 ) for injecting fuel into the cylinders of the engine ( 4 ) in the form of pilot injections and main inj...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	BEAUGE, YVON, MEDIOUN, DJAMAL, CHAOUCHE, ALI, GASCOIN, MICKAEL, AMELOOT, PIET
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
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Beschreibung
Zusammenfassung:	This system for assisting regeneration of a storage/release NOx trap integrated into an exhaust system ( 5 ) of a motor vehicle diesel engine ( 4 ) is characterized in that it includes means ( 11 ) for injecting fuel into the cylinders of the engine ( 4 ) in the form of pilot injections and main injections and means ( 12 ) for controlling the injection means ( 11 ) to switch the engine ( 4 ) periodically from a standard mode of operation using a lean mixture and pilot injection and main injection, in which NOx are stored in the trap ( 6 ), to a regeneration mode of operation using a rich mixture, with at least two pilot or main injections depending on the engine load, in which NOx, are released from the trap ( 6 ) and the trap is regenerated.