Method and device for controlling pressure of intake manifold of Otto-cycle internal combustion engine

Abstract

A method of controlling the pressure in an intake manifold (IT) of an Otto-cycle internal combustion engine (E) equipped with a throttle valve (TH) and an electric actuator (Act) arranged to control a target position (alphades) of a flap (SH) of a butterfly valve, and a pressure sensor (Sns), the method comprises a control process (CTRL) of the actuator according to a first pressure error between a value of the target pressure (Pdes) and an estimated pressure value (Pcalc), wherein the estimate of the estimated pressure value (Pcalc) is a function of a second error (Ectrl) between an average value of the measured pressures (Pmeasfilt) and an average value of the estimate of the pressure values (Pcalcfilt).

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