Method for controlling the burnt gas fraction in an engine cylinder with external and internal exhaust gas recirculation

摘要

The method involves acquiring a torque setpoint for an engine. Position setpoints for respective actuators are determined using a burnt gas flow model (MEGB), which relates the position setpoints of the actuators to the engine torque setpoint and includes a cylinder filling model (MR). The burnt gas flow model is constructed using engine maps (MAP) as a function of the torque setpoint associated with the filling model of the cylinder. A burnt gas fraction in the cylinder is controlled by applying the position setpoints to a variable distribution unit. An independent claim is also included for an internal combustion engine.