| 摘要 |
The invention relates to a slot piston ring ( 1 ) for the pistons of internal combustion engines or compressors, having a peripheral recess ( 9 ) (a so-called scraper ring) that extends close to the slot ( 2 ) on the external periphery ( 3 ) of the piston facing away from the combustion chamber. The aim of the invention is to reduce oil consumption and the amount of leakage gas of such a piston. To this end, the recess is configured to extend from a zone ( 10 ) diametrically opposite the slot, starting with a maximum height ( 12 ) which gradually decreases to zero ( 13 ) in the direction of the slot or close to the slot.
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