Abstract: A method for optimizing the operating and combustion processes of a diesel engine with common rail injection and a turbocharger includes injecting fuel into each combustion chamber of the diesel engine by a main injection and a post-injection which follows the main injection and controlling a start time and a quantity of the post-injection as a function of an end of the main injection and as a function of operating parameters of the diesel engine using an electronic engine control unit and an input-output map stored in the electronic engine control unit. The post-injection is initiated at a point 30–180° of rotation of a crankshaft of the diesel engine after the end of the main injection, and the quantity of the post-injection is adjusted to 20–30% of a quantity of the main injection.

Abstract: The invention concerns a method for optimizing the operating mode and combustion mode of a diesel engine with regard to a minimal emission of pollutants involving common rail injection and including the use of an exhaust gas turboblower. According to this method, fuel is injected into each combustion chamber of the diesel engine at least by one main injection (HE) and by one afterinjection (BOOST) that is subsequent to the main injection, and an electric control unit (ECU) and a mapping stored therein serve to control the start and the amount of the afterinjection (BOOST) according to the end of the main injection (HE) and control operating parameters of the diesel engine.