Kolben für eine luftverdichtende Hubkolben-Brennkraftmaschine

摘要

The air cooled engine has direct fuel injection and the piston has a combustion chamber recess with a throttled section (4) which opens to the piston crown surface via a straight bore section (5). Below the walls is an outwardly bulged section. The combustion chamber recess (3) has at least one annularly extending deepening 99) in the area of the throttled section. The deepening can be formed as steps between the straight section and the bulged section.