A method for checking the functionality of a device for setting the stroke of the gas exchange valves of an externally ignited differential internal combustion engine

摘要

A method for checking the functionality of a device for setting the stroke of gas exchange valves of a spark-ignited internal combustion engine with a device for detecting a rotational angle of a crankshaft and / or the angle of rotation of at least one camshaft and with a processing unit for determining the crankshaft speeds, of the crank shafts rotational speed course of (a) and the crank shafts acceleration, characterized in that the stroke of the gas exchange valves of the ignition time is changed or adjusted, and that then a change in the crankshaft acceleration is evaluated.