标准摘要
[中文适用范围]： 本测试程序概述了在制动噪声测功机上测试低频制动噪声（200 Hz至1.25 kHz）所需的测试设备（测试夹具、测功机、数据采集系统等）和测试顺序。它旨在补充SAE J2521，后者主要关注高频制动啸叫。本推荐实践适用于总车辆重量评级低于4536 kg的乘用车和轻型卡车。在将此推荐实践用于更重的车辆之前，请咨询并与测试请求方和测试设施达成一致。 本推荐实践旨在建立一种普遍认可的通用方法，用于执行一系列筛选测试序列，以识别制动总成在各种测试条件下产生低频噪声的倾向。 [外文原描述]： This test procedure outlines the necessary test equipment (test fixture, dynamometer, data acquisition system, etc.) and test sequence required to test for low-frequency brake noise (200 Hz to 1.25 kHz) on a brake noise dynamometer. It is intended to complement SAE J2521, which focuses on high-frequency brake squeal. This RP applies to passenger cars and light trucks with a gross vehicle weight rating below 4536 kg. Before using this RP for heavier vehicles, consult and agree with the test requestor and the testing facility.Cross Reference:
英文名称Disc and Drum Brake Dynamometer Low-Frequency Noise Test Procedure