| 摘要 |
The aim of the invention is to prevent deposition of material on the piston ring flank (6) of a piston ring (3) for the piston (1) of an internal combustion engine. To this end, said piston ring is provided with channels (7) which are distributed on the circumference of said piston ring flank and which preferably are positioned radially thereon. Said channels are produced on the piston ring in a simple manner by using a laser.
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