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发明授权
US08146560B2 Multi-part piston for an internal combustion engine and method for its production 有权
用于内燃机的多部件活塞及其生产方法

Multi-part piston for an internal combustion engine and method for its production
摘要：
The present invention relates to a multi-part piston (10, 110) for an internal combustion engine, having an upper piston part (11, 111) having a piston crown (13), and a lower piston part (12), whereby the lower piston part (12) has pin boss supports (32) and pin bosses (18) connected with them, whereby the upper piston part (11) and the lower piston part (12) each have an inner (21, 25) and an outer (22, 26) support element, which elements delimit an outer circumferential cooling channel (29). According to the invention, it is provided that the inner support elements (21, 25) delimit a cavity (31) that is open toward the pin bosses (18), and that the cavity (31) is provided with a separate cooling oil collector (35, 135) that has at least one cooling oil opening (37, 38). The present invention furthermore relates to a method for the production of such a piston.
摘要（中）：

本发明涉及一种用于内燃机的多部件活塞（10,110），其具有具有活塞顶部（13）的上活塞部件（11,111）和下活塞部件（12），由此， 下活塞部分（12）具有销钉凸起支撑件（32）和与其连接的销凸起（18），由此上活塞部件（11）和下活塞部件（12）各自具有内（21,25）和 外部（22,26）支撑元件，所述元件限定外周冷却通道（29）。 根据本发明，内部支撑元件（21,25）限定了朝向销凸起（18）开口的空腔（31），并且空腔（31）设置有单独的冷却油收集器 （35,135），其具有至少一个冷却油开口（37,38）。 本发明还涉及一种用于生产这种活塞的方法。

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