A method for exhaust aftertreatment of an internal combustion engine in a hybrid vehicle and hybrid vehicle with an exhaust aftertreatment system

摘要

The invention relates to a method for exhaust aftertreatment of an internal combustion engine (10) in a motor vehicle having a hybrid drive comprising an electric motor (60) and an internal combustion engine (10). In this case, the motor vehicle is initially driven solely by the electric motor (60) while in the exhaust system (22) of the internal combustion engine (10), an electrically heatable catalyst (34) is heated to its light-off temperature (T). For this purpose, an electrical heating element (36) in the exhaust system (22) upstream of a catalytically active structure (38) is heated and formed a secondary air stream, which convectively the heat of the electric heating element (36) on the catalytically active structure (38) of the electrically heated three Pathway catalyst (34) transfers. If the catalytically active structure (38) of the three-way catalytic converter (34) reaches its light-off temperature (T), the internal combustion engine (10) is switched on, so that from the start of the internal combustion engine (10) an efficient conversion of the pollutants the internal combustion engine (10) is possible.