ENGINE CYLINDER DEACTIVATION TO IMPROVE THE PERFORMANCE OF EXHAUST EMISSION CONTROL SYSTEMS

The invention provides a controller (10) and cylinder deactivation system to regenerate an exhaust aftertreatment device (60) for a multicylinder engine (5) that operates primarily at an air/fuel ratio that is lean of stoichiometry. The invention uses the cylinder deactivation system to control temp...

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Bibliographische Detailangaben
Hauptverfasser:	FOSTER, MICHAEL, RALPH, PRICE, KENNETH, S, FOSTER, MATTHEW, G
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	ARRANGEMENTS OR ADAPTATIONS OF HEATING, COOLING, VENTILATING,OR OTHER AIR-TREATING DEVICES SPECIALLY FOR PASSENGER OR GOODSSPACES OF VEHICLES BLASTING CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TOTRANSPORTATION COMBUSTION ENGINES COMBUSTION ENGINES IN GENERAL CONTROLLING COMBUSTION ENGINES COOLING OF INTERNAL-COMBUSTION ENGINES COOLING OF MACHINES OR ENGINES IN GENERAL CYCLICALLY OPERATING VALVES FOR MACHINES OR 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 STEAM ENGINES TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE TRANSPORTING VEHICLES IN GENERAL WEAPONS
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Beschreibung
Zusammenfassung:	The invention provides a controller (10) and cylinder deactivation system to regenerate an exhaust aftertreatment device (60) for a multicylinder engine (5) that operates primarily at an air/fuel ratio that is lean of stoichiometry. The invention uses the cylinder deactivation system to control temperature and air/fuel ratio of an exhaust gas feedstream going into an aftertreatment device (60). The invention also increases the amount of fuel delivered to each activated cylinder by an amount sufficient to maintain operating power of the engine. The regeneration action includes describing NOx from a NOx adsorbed catalyst (64), desulfating the NOx adsorbed catalyst (64), and purging a diesel particulate trap (68). L'invention concerne un dispositif de commande (10) et un système de désactivation de cylindre permettant de régénérer un dispositif de post-traitement d'échappement (60) pour un moteur à plusieurs cylindres (5) fonctionnant principalement à un rapport stoechiométrique faible. L'invention fait appel à un système de désactivation de cylindre pour commander une température et un rapport air/combustible d'un flux d'alimentation de gaz d'échappement se dirigeant dans un dispositif de post-traitement (60). L'invention permet également d'augmenter la quantité de combustible injecté dans chaque cylindre non désactivé, par le biais d'une quantité suffisante, pour maintenir la puissance fonctionnelle du moteur. Cette action de régénération consiste à désorber du NOx à partir d'un catalyseur adsorbeur NOx (64), à désulfater le catalyseur (64) adsorbeur NOx, et à purger un piège à particules de diesel (68).