REGULATION OF CONCENTRATION/FRACTION OF SUBSTANCES IN AN EXHAUST STREAM

• Main Authors: ROOS, FREDRIK, STENLÅÅS, OLA
• Format: Patent
• Language: English; French
• Published: 10.04.2014
• Subjects: BLASTING; COMBUSTION ENGINES; CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE ORDIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; CONTROLLING COMBUSTION ENGINES; ENGINE PLANTS IN GENERAL; ENGINEERING ELEMENTS AND UNITS; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNALCOMBUSTION ENGINES; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES ORENGINES IN GENERAL; GEARING; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS; LIGHTING; MACHINES OR ENGINES IN GENERAL; MECHANICAL ENGINEERING; PERFORMING OPERATIONS; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TOTHE CONTROL OF A PARTICULAR SUB-UNIT; STEAM ENGINES; THERMAL INSULATION IN GENERAL; TRANSPORTING; VEHICLES IN GENERAL; WEAPONS

The present invention pertains to a method for the regulation of a concentration/fraction of one or several substances comprised in an exhaust stream in a motor vehicle through control of its driveline, which motor vehicle comprises: a driveline comprising a combustion engine which may be connected to a continuously variable gearbox (CVT/IVT) via a clutch device, and an exhaust system arranged for the removal of an exhaust stream from the said combustion engine; where the said method comprises the step: - control of the said continuously variable gearbox (CVT/IVT), and thus an operating point in the said combustion engine, based on the said one or several first parameters for the regulation of a concentration/fraction CExIXEx of one or several substances comprised in the said exhaust stream, where at least one of the said one or several first parameters Pt are a first concentration/fraction difference between the said first concentration/fraction C1IX1 in the said exhaust stream and a reference concentration/fraction CReflXRef. Further, the invention pertains to a computer program, a computer program product, a system and a motor vehicle comprising such a system. La présente invention concerne un procédé permettant de réguler une concentration/fraction d'une ou de plusieurs substances présentes dans un flux d'échappement d'un véhicule automobile par le biais de la commande de sa transmission, le véhicule automobile comprenant : une transmission comprenant un moteur à combustion qui peut être raccordé à une boîte de vitesses à variation continue (CVT/IVT) via un dispositif d'embrayage, et un système d'échappement conçu pour l'élimination d'un flux d'échappement dudit moteur à combustion ; ledit procédé comprenant l'étape consistant à commander ladite boîte de vitesses à variation continue (CVT/IVT), et ainsi un point de fonctionnement dans ledit moteur à combustion, en fonction desdits un ou plusieurs premiers paramètres pour la régulation d'une concentration/fraction CExIXEx d'une ou de plusieurs substances comprises dans ledit flux d'échappement, au moins un desdits un ou plusieurs premiers paramètres Pt étant une première différence de concentration/fraction entre ladite première concentration/fraction C1IX1 dans ledit flux d'échappement et une concentration/fraction de référence CreflXRef. La présente invention concerne en outre un programme informatique, un produit de programme informatique, un système et un véhicule automobile comprenant ledit système.