| 摘要 |
A piston and ring assembly for internal combustion engines wherein a piston mounts a split piston ring having a portion seated in a groove for the ring and a portion extending radially outwardly of the piston to engage the cylinder wall, the cylinder wall engaging portion projecting longitudinally outwardly beyond the piston end wall a distance such that the fuel explosion forces exert sufficient radial pressure on the longitudinally projecting portion to seal off explosion residuals which otherwise would leak past between the ring and cylinder wall.
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