| 摘要 |
<p>Piston for an internal combustion engine, comprising a top upper portion (10), provided with a piston ring region (11) and a skirt lower portion (20), provided with a pair of hubs (21) for the articulating pin of the connecting rod. The piston ring region (11) disposed above the hubs (21) is provided with at least one peripheral groove (12) for a compression ring (32) and at least one peripheral groove (14) for an oil ring (34), located below the hubs (21), the relation between the compression height (HC) of the piston (P) and the diameter (D) of the cylinder (C) being inferior to 1:3.</p> |
