Ein Verfahren und eine Vorrichtung eines Abgasrückführsystems für einen Verbrennungsmotor

摘要

The method involves controlling exhaust gas recirculation (EGR) ratio based on the speed (10) and torque (20) of a diesel engine, where the ratio is limited based on a maximum EGR ratio. A model of an EGR valve is obtained based on a limited desired EGR ratio and speed density of mass flow. EGR valve position is controlled based on the model and EGR temperature, and EGR input and output pressure values. An independent claim is also included for a device for controlling an internal combustion engine.