ISO 12251:2017 柴油发动机 安装夹具的CR燃料喷射器 安装尺寸

标准编号：ISO 12251:2017

中文名称：柴油发动机 安装夹具的CR燃料喷射器 安装尺寸

英文名称：Diesel engines — Clamp mounted CR fuel injectors — Mounting dimensions

发布日期：2017-09

标准范围

ISO 12251规定了柴油发动机中夹紧式CR喷油器及其相应气缸盖特征的尺寸要求。根据喷油器喷嘴盖螺母，卡箍式CR喷油器可分为两种类型:a） a型，其中喷嘴盖螺母是直的（见图4）；b） b型，其中喷嘴盖螺母为阶梯形（见图5）。每个卡箍式CR喷油器类型由一系列不同的尺寸细分。注:这种区别对应于卡箍式CR喷油器的两个导向直径之间的关系。

ISO 12251 specifies dimensional requirements for clamp mounted CR fuel injectors and their corresponding cylinder head features in diesel engines.According to the injector nozzle capnut, the clamp mounted CR fuel injectors can be divided into two types:a) Type A, where the nozzle capnut is straight (see Figure 4);b) Type B, where the nozzle capnut is stepped (see Figure 5).Each clamp mounted CR fuel injector type is subdivided by a series of different sizes.NOTE This differentiation corresponds to the relationship between the two guide diameters of the clamp mounted CR fuel injectors.

标准预览图