| 摘要 |
PURPOSE:To secure the wear resistance and the adhesive resistance while securing the reduction of the manufacturing cost of a piston and the weight reduction. CONSTITUTION:In a piston of an internal combustion engine, three piston ring grooves are formed in a ring land part 3 of a piston body 1 made of aluminum alloy. A wear resistant ring 11 made of aluminum alloy containing particles of silicon carbide SiC is cost in within a top ring groove 4 among the piston ring grooves 4,5,6. |
