IC engine light metal piston

摘要

In the piston hubs (2) are formed shaped bores (7) whose casing surface is cylindrical in the inner hub section (9), but in the outer hub section it is frusto-conical, or hyperboloid-shaped with round or oval cross-section. The larger axis (10) of the oval shape (11) extends in a plane orthogonal to the piston axis, enclosing the bore axis (13).The piston is cast from an Al alloy and the hubs are integrated into the piston shaft and are fitted with a block support for the piston crown exposed to high ignition pressure stress.