METHOD AND CONTROL UNIT FOR CARRYING OUT A GAS EXCHANGE IN A CYLINDER OF AN INTERNAL COMBUSTION ENGINE AND INTERNAL COMBUSTION ENGINE HAVING SUCH A CONTROL UNIT

摘要

A method for carrying out a gas exchange in a cylinder of an internal combustion engine is provided. The cylinder is connected to a gas line section via a valve. An actuator adjusts a gas pressure in the gas line section. The valve closes at a fixed point in time in a working cycle of the internal combustion engine in case of a constant torque of the internal combustion engine. The method includes the steps of recognizing a torque change request; determining a target value for the gas pressure in the gas line section in dependence on the torque change request; and determining a variable point in time for closing the valve as a result of the torque change request, wherein the variable point in time is shifted in the working cycle relative to the fixed point in time in dependence on the target value of the gas pressure.

主权项

1. A method for carrying out a gas exchange in a cylinder of an internal combustion engine, the method comprising:
providing the internal combustion engine such that the cylinder is connected, via a valve, to a gas line section and providing, in the gas line section, an actuator for adjusting a gas pressure in the gas line section, wherein the valve closes at a fixed point in time in a working cycle of the internal combustion engine in case of a constant torque of the internal combustion engine; recognizing a torque change request; determining a target value for the gas pressure in the gas line section in dependence on the torque change request and subsequently determining a variable point in time for closing the valve as a result of the torque change request, wherein the variable point in time is shifted in the working cycle relative to the fixed point in time in dependence on the target value of the gas pressure; and controlling the actuator as a result of the torque change request in such a way that the target value of the gas pressure prevails in the gas line section.