公开(公告)号：US20020074733A1

公开(公告)日：2002-06-20

申请号：US09969655

申请日：2001-10-04

Applicant: NIPPON PISTON RING CO., LTD

Inventor： Hideo Negishi ,  Hideshi Hitosugi ,  Hideyo Iwama

IPC: F02F005/00 ,  F16J009/00

CPC classification number: F02F11/002 ,  F16J9/00

Abstract: A compression piston ring capable of reducing excessive surface pressure at a gap and adjacent portion thereto during engine operation, and capable of being produced at a low cost. The compression piston ring has generally circular shape without any notched portion. The compression piston ring has a dimensional requirements in that d1/a1 ranges from 40 to 60, and d1/h1 ranges from 30 to 55, in which d1 represents an inner diameter of the piston ring, a1 represents a radial length between inner and outer peripheral surfaces of the piston ring, and h1 represents an axial length of the outer peripheral surface. The compression piston ring is particularly available as a first compression piston ring for a supercharging type diesel engine providing high engine pressure.

Abstract translation: 一种压缩活塞环，其能够在发动机运转时在间隙及其相邻部分减小过大的表面压力，并能够以低成本制造。 压缩活塞环具有大致圆形且没有任何凹口部分。 压缩活塞环具有尺寸要求，其中d1 / a1的范围为40至60，d1 / h1的范围为30至55，其中d1表示活塞环的内径，a1表示内外径之间的径向长度 活塞环的周面，h1表示外周面的轴向长度。 压缩活塞环特别可用作提供高发动机压力的增压型柴油发动机的第一压缩活塞环。