Controlled self-ignition combustion process and associated 4 stroke combustion engine with residual gas storage volume and valve there for

摘要

The procedure consists of filling a separate external chamber (10) with exhaust gases from the cylinder (1) through a special valve (8) and duct (9) on the expansion stroke and returning some of the gases to the cylinder on the next inlet stroke, when the pressure in the cylinder is lower than in the chamber, so that the fresh charge is ignited by the hot exhaust gases. The chamber (10) is insulated to maintain the temperature of the exhaust gases.