| 摘要 |
A light metal piston for an internal combustion engine or a comprssor comprises a crown, a gudgeon pin bore, and a skirt. The skirt includes portions forming opposed thrust faces on opposite sides of the plane including the piston axis and the gudgeon pin bore axis. An upper end of at least one skirt portion is spaced from an adjacent crown portion by an axially and circumferentially extending gap. An insert of a material of lower coefficient of thermal expansion than the material of the crown on the skirt is provided with the insert including a curved section or a plurality of consecutive curved sections lying in a plane generally normal to the piston axis. The curved section, or at least one of the plurality of curved sections, is within said gap so that the crown is supported on the skirt. In addition, the curved section, or at least two of the plurality of curved sections, is embedded in the piston material to support the insert. |
