空气制动阀输入输出特性要求

[中文适用范围]： 本 SAE 推荐实践规定了行车制动控制系统中使用的先导式和机械驱动调节型阀@ 以及直通型阀在按照 SAE J1859 中概述的测试程序进行测试时的最小公差要求。本文件适用于由车辆原始设备制造商指定并由阀门制造商标记的标称输入输出特性，如 SAE J1860 中所述。公差要求包括：破裂（打开）压力或力。开启压力可在初始输出压力下测量，或在输出压力超过 14 kPa (2 psi) 之前测量压差。破裂力可以在初始输出压力下或输出压力超过 14 kPa (2 psi) 之前测量。 b.压差（输入-输出） 目的 本文件为商用空气制动车辆中设计用于在 931 kPa (135 psi) 标称压力下运行的气动阀的指定标称输入-输出特性建立了统一的公差要求。这是对 SAE J1410 的补充。 [外文原描述]： This SAE Recommended Practice establishes minimum tolerance requirements for pilot operated and mechanically actuated modulating type valves, and through type valves used in the service brake control system when tested in accordance with the test procedure outlined in SAE J1859. This document applies to the nominal input-output characteristics as specified by vehicle original equipment manufacturer and labeled by the valve manufacturer as outlined in SAE J1860. The tolerance requirements will include:aCrack (opening) pressure or force. Crack pressure may be measured at the initial output pressure or as the pressure differential before output pressure exceeds 14 kPa (2 psi). Crack force may be measured at initial output pressure or before output pressure exceeds 14 kPa (2 psi).bPressure differential (input-output)Cross Reference: J1410_201607,J1859_201606,J1860_201606