Internal-combustion engine operating method, involves varying closing flank such that energy conversion value is reached and adjusting flank into middle region between early and late time at relatively early time

摘要

The method involves operating a piston in an operating range using homogeneous self-ignition. A closing flank (28) of a movable charge-cycle valve, is varied for the transition of the self-ignition mode to an extraneous-ignition mode such that energy conversion value characterizing the measure of energy conversion in a combustion chamber is reached during adjustment of the flank in an early direction and/or late direction at a relatively later time during a combustion process. The flank is adjusted into a middle region between early and late time at a relatively early time.