Liquid-cooled piston for I.C. engines has an annular cooling channel that runs in an undulating fashion in the direction of the piston axis

摘要

Liquid-cooled piston (10) has an annular cooling channel (16) or one with several ring segments. The channel has a uniform cross-section and runs in an undulating fashion in the direction of the piston axis (18). Preferred Features: The distance from the wave troughs (22) to the peaks (20) is more than 1.5 times the dimension of the cooling channel in the direction of the piston axis.