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    • 10. 发明申请
    • FRICTION WELDED STEEL PISTON HAVING OPTIMIZED COOLING CHANNEL
    • 具有优化冷却通道的摩擦焊接活塞
    • US20110185992A1
    • 2011-08-04
    • US13055231
    • 2009-04-07
    • Volker Gniesmer
    • Volker Gniesmer
    • F01P1/04B23P15/10
    • B23P15/10F01P1/04Y10T29/49249
    • A piston of an internal combustion engine includes a top part produced from steel and a bottom part, which are integrally bonded in the region of a contact geometry via joining webs by a friction weld to form a structural unit. At least one cooling duct permeated by a coolant is integrated in the piston, wherein a lubricating oil of the internal combustion engine passes as the coolant into an inlet opening via a free jet of an injection nozzle, flows through the cooling duct and leaves the cooling duct via an outlet opening. For the introduction of the coolant into the cooling duct, the inlet opening is assigned a flow pipe which is inserted in the bottom part and protrudes from a cooling duct base, the opening of the flow pipe being arranged above the weld beads of the friction weld.
    • 内燃机的活塞包括由钢和底部产生的顶部,其通过由摩擦焊接合的纤维网而在接触几何形状的区域中整体地结合以形成结构单元。 至少一个由冷却剂渗透的冷却管被集成在活塞中,其中内燃机的润滑油通过喷射喷嘴的自由射流随着冷却剂流入入口,流过冷却管并离开冷却 通过出口开口。 为了将冷却剂引入冷却管道,入口开口被分配有一个插入底部并从冷却管道底部突出的流动管,流动管的开口设置在摩擦焊缝的焊道上方 。