Internal combustion engine i.e. spark-ignited internal combustion engine, has trough edge formed between discharge-side quench surface of piston and discharge-side wall of piston trough, where trough edge exhibits defined radius

摘要

The engine has an intake channel (5) led into a combustion chamber (12) on an inlet side (E). A discharge channel (7) runs from the combustion chamber on a discharge side (A). An intake-side quench surface (15) of a piston skirt region (15b) is provided at a distance from a normal plane (22) wider than a piston trough edge area (15a). A trough edge is formed between a discharge-side quench surface (16) of a piston (2) and a discharge-side wall (17c) of a piston trough (17), where the trough edge exhibits a defined radius.