Petrol engine for vehicle, has three-way catalytic converter arranged in exhaust line between engine outlet and pressure wave supercharger inlet, and particulate filter arranged in exhaust line after pressure wave supercharger outlet

摘要

#CMT# #/CMT# The engine (1) has a three-way catalytic converter (3) arranged in an exhaust line (4) between an engine outlet and a pressure wave supercharger inlet, where the catalytic converter is additionally provided with a particle filter function. A particulate filter is arranged in the exhaust line after a pressure wave supercharger outlet. A nitrogen oxide post-treatment system is arranged after the filter. A pressure wave supercharger (2) is controlled such the pressure wave supercharger enriches exhaust gas with oxygen by purging the exhaust gas with air with respect to the outlet. #CMT# : #/CMT# An independent claim is also included for a method for controlling exhaust gas temperature in a petrol engine. #CMT#USE : #/CMT# Petrol engine for a vehicle. Can also be used for a diesel engine. #CMT#ADVANTAGE : #/CMT# The particulate filter is arranged in the exhaust line after the pressure wave supercharger outlet such that an exhaust gas purification of the petrol engine can be improved confirming to exhaust emission standards Europe EU6and/or USA LEV III, thus ensuring a reliable particle cleaning operation. #CMT#DESCRIPTION OF DRAWINGS : #/CMT# The drawing shows a schematic view of an exhaust line with a three-path catalytic converter that is with an integrated particulate filter function against a pressure wave supercharger. 1 : Petrol engine 2 : Pressure wave supercharger 3 : Three-way catalytic converter 4 : Exhaust line 20 : Cold gas side.