Method and device for operating a spark ignited piston internal combustion engine

摘要

The drive process is for an engine with inlet and outlet valve (5,6,7), in which exhaust gas from the exhaust gas channel (8) is taken back to the combustion chamber (4) during a valve overlap phase (9). The outlet valve lifting curve (A,E) is set in the direction of the later crank angle. The returned exhaust gas is forced into a rotary helical flow path (D) about the cylinder axis (Z) running in the direction of motion of the piston (2). The fresh gas coming in via the inlet valve is forced into a flow path to bring about an increased concentration in the combustion chamber of fresh gas from the helical exhaust gas flow and the fresh gas flow.