Coordinated control of an electronic throttle valve and a turbocharger with variable geometry in boost-pressure and stoichiometrically operated gasoline engines

摘要

The invention relates to an engine control arrangement (24) and a method in which the difference between an actual intake manifold pressure p¶int¶ and a desired intake manifold pressure p¶int, des¶ and the difference between an actual exhaust manifold pressure p¶exh¶ and a desired exhaust manifold pressure p¶exh, which¶ is combined in a single feedback signal to control a turbine (38) with variable geometry. At the same time, the difference between the actual intake manifold pressure p¶int¶ and the desired intake manifold pressure p¶int, which¶ is used to control a throttle position.