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Piston-sealing device for alternative internal combustion fitter or alternative compressor, and system comprising such a piston
Piston-sealing device for alternative internal combustion fitter or alternative compressor, and system comprising such a piston
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机译:用于可替代的内燃钳工或可替代的压缩机的活塞密封装置以及包括这种活塞的系统
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摘要
The piston (2), reciprocating in the cylinder of an internal combustion engine or compressor and dividing its chamber (4) into high pressure (6) and low-pressure (8) sections, has a groove (24) containing a closed elastic seal ring (22) designed to leave a graduated film of oil, preferably between 0.1 and 1 mcm thick on the inner surface (12) of the cylinder as it moves from the high-pressure to the low-pressure chamber. The seal ring, which has a radial thickness between 1 and 5 per cent of the cylinder's diameter, has a perimeter that is slightly greater in its free state than the perimeter of the cylinder surface so that it is subjected to a constant elastic deformation.
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