WÄRMEREGELUNG DES NACHBEHANDLUNGSSYSTEMS

摘要

This invention concerns a method suitable to control and manage the temperature of the after treatment system (5) of an internal combustion engine (1) by controlling exhaust gas flow.
More specifically, the method of the present invention allows to prevent the unwanted cooling of the after treatment system (5) when the engine (1) is in a motored engine phase. In fact, in this functioning condition not fired, the exhaust gases are cold and they would easily reduce the temperature of the after treatment system (5) jeopardizing its efficiency.
The method according to the present invention is characterized in that flow control means (10) are provided upstream of the after treatment system (5) while a pipe network (4,11) is used to root the by-passed flow back to the inlet side of the engine.