标准摘要
[中文适用范围]： 本文件规定了道路车辆和其他用途往复式内燃机活塞环的一般特性（这些环的单独尺寸标准在相关国际标准中给出）。它还提供了环编码、名称和标记的系统。它适用于公称直径从 30 毫米到 200 毫米（包括）的所有此类环。 [外文原描述]： This document specifies the general characteristics of piston rings for reciprocating internal combustion engines for road vehicles and other applications (the individual dimensional criteria for these rings are given in the relevant International Standards). It also provides a system for ring coding, designation, and marking. It is applicable to all such rings of a nominal diameter from 30 mm up to and including 200 mm.
英文名称Internal combustion engines — Piston rings — Part 4: General specifications