| 摘要 |
<p>An internal combustion engine includes a piston (11) mounted for reciprocating motion within a cylinder and sealed with respect thereto. The piston (11) is connected to a crankshaft by means of a connecting rod (12), pivotal connections being provided between the connecting rod (12) and crankshaft and between the connecting rod (12) and piston (11). An oil ring (16) is provided in a circumferential groove (17) in the wall of the piston (11), said oil ring (16) being split so that there is a gap (18) in the ring (16) when it engages the wall of the cylinder. An interconnection (21-32) is provided between the connecting rod (12) and oil ring (16) by which tilting of the connecting rod (12) upon upward movement of the piston (11) will reduce the gap (18) so that the load applied by the oil ring (16) on the cylinder wall is reduced, the oil ring (16) being permitted to expand against the cylinder wall upon downward movement of the piston (11).</p> |
