公开(公告)号：US5086736A

公开(公告)日：1992-02-11

申请号：US694414

申请日：1991-05-01

Applicant: Lothar Wiemann

Inventor： Lothar Wiemann

IPC: F02F3/00 ,  F02F3/22

CPC classification number: F02F3/225 ,  F02F3/0069 ,  F02F3/22 ,  F02F2200/04 ,  F05C2201/021 ,  F05C2201/0448

Abstract: A piston for an internal combustion engine with a separate head and skirt which are joined by a piston pin. The ring belt extends downward from the head and terminates above the pin. The space between the lower edge of the ring belt and a section of the head defines a cooling oil ring space. The head is provided with bores which extend from the cooling oil ring space upward toward the top of the head.

Abstract translation: 一种用于内燃机的活塞，其具有由活塞销连接的单独头部和裙部。 环带从头部向下延伸并终止在销的上方。 环带的下边缘和头部的一部分之间的空间限定了冷却油环空间。 头部设置有从冷却油环空间向上朝向头部的顶部延伸的孔。

公开(公告)号：US4603617A

公开(公告)日：1986-08-05

申请号：US746068

申请日：1985-06-18

Applicant: Alois Barth ,  Lothar Wiemann

Inventor： Alois Barth ,  Lothar Wiemann

IPC: F02F3/00 ,  F02F3/02

CPC classification number: F02F3/0023

Abstract: A multi-part plunger piston for internal combustion engines, comprises a piston upper part and lower part which engage one on the other through coinciding annular abutment surfaces. The parts are connected with one another by screws which pass through the annular surfaces. At least one of the annular abutment surfaces is domed in the circumferential direction in such a way that the annular surfaces are more strongly resiliently braced in the region between the screws in the finally assembled piston than in the regions around the screws. Due to the elastic initial stressing of the regions of the annular abutment surfaces between the screws it is intended reliably to avoid lifting away of the annular abutment surfaces in these regions during engine operation. When the finally assembled piston is in the cold condition the annular surfaces lie uniformly against one another over the entire circumference, admittedly with locally differing initial stresses.

Abstract translation: 用于内燃机的多部件柱塞活塞包括活塞上部和下部，其通过重合的环形邻接表面彼此接合。 这些部件通过穿过环形表面的螺钉彼此连接。 环形邻接表面中的至少一个在圆周方向上圆顶形成使得环形表面在最终组装的活塞中的螺钉之间的区域中比在螺钉周围的区域中更强烈地弹性地支撑。 由于螺钉之间的环形邻接表面的区域的弹性初始应力，其可靠地避免在发动机操作期间在这些区域中的环形邻接表面的离开。 当最终组装的活塞处于寒冷状态时，环形表面在整个圆周上彼此均匀地彼此平坦，当然，具有局部不同的初始应力。