Power-controlling method for controlling mixture-compressing internal combustion engine

An apparatus for controlling delivered power from a mixture-compressing internal combustion engine, comprising an electronic control unit, a butterfly valve, an electric motor operatively connected with the butterfly valve and configured to be triggered by the electronic control unit for actuating a throttle butterfly into a desired position, and a setting spring device arranged to act against the electric motor wherein, during normal operation of the engine, the butterfly valve controls induced mass flow corresponding to current load demand and a fuel injection quantity is matched to the induced mass flow and during deactivated periods of the electric motor, the throttle butterfly is mechanically decoupled therefrom and is held by the setting spring device in a specified opening position, wherein, during the deactivation of the electric motor, with increasing load demand, at least one of the following occurs:

• the mixture composition is altered in a rich direction, the ignition timing is displaced in an advanced direction, and a frequency of the cylinder shut-downs is reduced and vice versa.

A method for controlling delivered power from a mixture-compressing internal combustion engine, comprising the steps of adjusting power by a setting element during normal operation of the engine by matching fuel injection quantity to induced air mass flow corresponding to a current load demand and controllable by a setting element, holding the setting element in a constant opening position in the case of a functional fault thereof, and, during existence of the functional fault, adjusting internal combustion engine power to a value corresponding to the current load demand exclusively by one or more of interventions in mixture composition, interventions in ignition timing, and controlled interruption of the fuel delivery to at least one cylinder so as to provide cylinder shut-down, wherein, during the existence of the functional fault, with increasing load demand at least one of the following occurs:

• the mixture composition is altered in a rich direction, the ignition timing is displaced in an advanced direction, and a frequency of the cylinder shut-downs is reduced and vice versa.

A method for controlling delivered power from a mixture-compressing internal combustion engine, comprising the steps of adjusting power by a setting element during normal operation of the engine by matching fuel injection quantity to induced air mass flow corresponding to a current load demand and controllable by a setting element, holding the setting element in a constant opening position in the case of a functional fault thereof, and, during existence of the functional fault, adjusting internal combustion engine power to a value corresponding to the current load demand exclusively by one or more of inventions in mixture composition, interventions in ignition timing, and controlled interruption of the fuel delivery to at least one cylinder so as to provide cylinder shut-down, wherein, during the existence of the functional fault, with decreasing load demand at least one of the following occurs:

• the mixture composition is altered in a lean direction, the ignition timing is displaced in a retarded direction, and a frequency of the cylinder shut-downs is increased.