Abstract:
A method is provided for controlling a filling (rl) of an internal combustion engine (2) including the camshaft phase adjustment in the case of a predefined setpoint filling (rlsol), including the following steps: carrying out the filling control based on an indicated pressure difference for obtaining a control variable (ΛFuereg) for setting an air mass supply to the internal combustion engine (2); and ascertaining the indicated pressure difference (ΔpSR) as a difference between a predicted intake manifold pressure (psrpred) and an actual intake manifold pressure (pSR), the predicted intake manifold pressure (psrpred) corresponding to an intake manifold pressure which is necessary for reaching the setpoint filling (rlsol) at an aspiration curve which is predicted for a predefined time constant (τ).
Abstract:
A reciprocating piston internal combustion engine includes: a sensor system on a gas exchange valve which has a valve head situated at a first end of a valve stem; a lever element which engages at a second end of the valve stem and which is designed to actuate the gas exchange valve by displacing the valve head; a detection element which, upon actuation of the gas exchange valve, is displaced along a displacement path; and a sensor device configured to ascertain a position of the detection element. The sensor device is situated in such a way that the detection element, during a displacement along a portion of the displacement path, moves predominantly in a movement toward the sensor device or away from the same, thereby providing a measurement of valve timing of the gas exchange valve.
Abstract:
A method is provided for controlling a filling (rl) of an internal combustion engine (2) including the camshaft phase adjustment in the case of a predefined setpoint filling (rlsol), including the following steps: carrying out the filling control based on an indicated pressure difference for obtaining a control variable (ΛFuereg) for setting an air mass supply to the internal combustion engine (2); and ascertaining the indicated pressure difference (ΔpSR) as a difference between a predicted intake manifold pressure (psrpred) and an actual intake manifold pressure (pSR), the predicted intake manifold pressure (psrpred) corresponding to an intake manifold pressure which is necessary for reaching the setpoint filling (rlsol) at an aspiration curve which is predicted for a predefined time constant (τ).