Patent ID: 7047910
Filing Date: 2006-05-23
Classification: F01L,F02B,F02D,Y02T

Abstract:
1. A control method for modulating the torque in an internal combustion engine with mechanical power transmission and with pneumatically, hydraulically or electromagnetically activatable, controllable valves that are opened and closed based on signals from a control system, by which method the torque required in an operative situation at a certain moment is provided by a selection of the frequency with which power strokes are performed by controlling the number of power strokes in relation to the number of idle strokes, wherein, the power strokes take part in 2-stroke cycles and 4-stroke cycles, and wherein one or more 2-stroke cycles are alternated with one or more 4-stroke cycles, said idle strokes being performed without any introduction of air into the combustion chamber after the nearast foregoing power stroke.