大型发动机用火花熄灭器试验规程

[中文适用范围]： 本技术规范涵盖用于大型发动机的防火罩（Spark Arrester）测试程序。该文件已被宣布为“稳定”状态，由SAE IC动力总成 steering 委员会声明，不再进行周期性审查以确认其时效性。用户负责核实参考文献并确认技术要求是否继续适用。可能存在更新的技术。 [外文原描述]： This SAE Recommended Practice establishes equipment and procedures for the evaluation of the effectiveness and other performance characteristics of spark arresters or turbochargers used on the exhaust system of large engines normally used in a railroad locomotive, stationary power plant, and other similar applications. This document does not cover applications requiring flame arresting, exhaust gas cooling, or isolation from explosive gases. Two test methods are presented: a laboratory test using ambient air (cold test) and an engine test using exhaust gases (hot test). The hot test is preferred.Arresters tested by the provisions of this document can be expected to perform as tested when tilted no more than 45 degrees from their normal position. Test results from a spark arrester or turbocharger evaluated by the hot test can be applied to different engines of similar design, provided the data shows it to be effective in the applicable flow ranges.Certain design and performance characteristics, which represent current requirements by regulatory agencies for qualification and approval under this document, are listed in Appendix A .Cross Reference: J997_201303,J997_202010