发动机声级测量规程

[中文适用范围]： 本 SAE 推荐实践规定了测量发动机声级时使用的设备、环境和测试程序。目的是提供一种统一的方法来测量在代表性发动机运行条件下发动机外表面的最大声辐射。测量的声级将有助于发动机的开发、发动机的比较以及发动机在各种应用中的安装。必须建立测量的发动机声级与各种应用声级的相关性。 [外文原描述]： This SAE Recommended Practice sets forth the equipment, environment, and test procedures to be used in measuring sound levels of engines. The purpose is to provide a uniform method of measuring the maximum acoustical radiation from the exterior surfaces of an engine under representative engine operating conditions. The measured sound levels will be useful in development of engines, comparison of engines, and installation of engines in various applications. The correlation of the measured engine sound levels to the various application sound levels will have to be developed.Cross Reference: ANSI/S1.11,ANSI/S1.4,J184_201408