| 摘要 |
Proposed is a two-part piston 1 for an internal combustion engine, having an upper part 2 that has a pin 31 having an outside thread 32 on the underside of its piston crown 4 , and having a lower part 3 , which is connected with the upper part 2 by means of a nut 29 screwed onto the pin 31 . The lower part 3 has an elastically resilient upper base part 25 , onto which an expansion sleeve 26 , elastic in the axial direction, is formed, which has an opening 27 having a collar 28 , which is directed radially inward, into which the pin 31 is introduced. An elastic compression sleeve 30 is formed onto the nut 29 , which sleeve rests against the collar 28 . In this connection, the elastic resilience of the base part 25 , the expansion sleeve 26 , the compression sleeve 30 , the pin 31 , and the piston crown 4 has the result that the screw connection has a flat characteristic line despite a low compression height of the piston 1 , thereby imparting great strength to the screw connection.
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