轻型车辆的内部声音级别的测量

[中文适用范围]： 本 SAE 推荐做法规定了测试程序、环境、仪器和数据分析，用于比较车辆总重 (GVWR) 为 4540 千克（10, 000 磅）或以下的乘用车、多用途车辆和轻型卡车的内部声级。测试程序的特点是具有固定的初始条件（指定的初始车速和试验场地起始点的档位选择），以获得在指定的恒定速度下在各种路面上的道路负载运行期间的车辆内部声音测量。由此得出的测量数据对于车辆工程开发和分析很有用。 [外文原描述]： This SAE Recommended Practice establishes the test procedure, environment, instrumentation, and data analyses for comparing interior sound level of passenger cars, multipurpose vehicles, and light trucks having gross vehicle weight rating (GVWR) of 4540 kg (10 000 lb) or less.The test procedure is characterized by having fixed initial conditions (specified initial vehicle speed and gear selection at the starting point on the test site) to obtain vehicle interior sound measurement during road load operation over various road surfaces at specified constant speeds.The measurement data so derived is useful for vehicle engineering development and analysis.Cross Reference: ANSI/S1.4,ISO5128,J184_201408,J986_201311