| 摘要 |
The invention relates to a single-pieced piston (1) for an internal combustion engine. Said piston comprises an annular shaped cooling channel (6) disposed in the edge area of the base of the piston (4). Said cooling channel is closed by a cooling channel cover (18), towards the side of the bolt hubs (10,10') consisting of at least two semi-circular covering elements (19, 20) and said cover, is embodied as a supporting element. The external edge (23) of the cover supports the bolt hub side front surface of the annular wall (7).
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