公开(公告)号：US3805677A

公开(公告)日：1974-04-23

申请号：US23074172

申请日：1972-03-01

Applicant: TRW INC

Inventor： CLARY H ,  SKOPIN H

IPC: F01M1/08 ,  F02F3/00 ,  F01P3/10 ,  F16J1/00

CPC classification number: F02F3/0015 ,  F01M2001/086 ,  F05C2201/021 ,  F05C2201/0448 ,  F05C2251/042

Abstract: A multi-piece piston assembly including a skirt defining portion and a head defining portion which interfit to provide wrist pin bores in registry for receiving a wrist pin, the skirt defining and head defining portions being composed of a metal having good thermal conductivity such as an aluminum alloy, together with a bridge member which is anchored in the skirt defining portion in the region of the thrust faces to provide thermal expansion control at the top of the skirt portion and to provide additional mechanical strength.

Abstract translation: 一种多片式活塞组件，包括裙部限定部分和头部限定部分，其相互配合以提供用于接纳腕针的对接孔中的腕针孔，所述裙部限定部分和头部限定部分由具有良好导热性的金属组成，例如 铝合金以及锚定在推力面的区域中的裙部限定部分中的桥构件，以在裙部的顶部提供热膨胀控制并提供额外的机械强度。