标准摘要
[中文适用范围]: ISO 21069 的这一部分描述了在滚轮制动器测试中生成可比较的测量结果的程序,以便无论在何处进行滚轮制动器测试,都可以可靠地评估行车制动系统的效率。 ISO 21069 本部分涵盖以下内容: - 符号和定义; ——测试方法; ——测试条件; - 所需的测试设备; ——测试设备的准确性; ——所需的数据记录和计算; - 结果的呈现; - 通过/失败的评估标准。 ISO 21069 本部分描述的程序不适用于乘用车。 [外文原描述]: ISO 21069-2:2008 describes a procedure that generates comparable measurement results in roller brake testing, such that the efficiency of the service braking system can be assessed reliably wherever the roller brake tests are performed. The following items are covered in ISO 21069-2:2008: symbols and definitions; test methods; test conditions; test equipment required; accuracy of test equipment; data recording and calculation needed; presentation of results; assessment criteria for pass/fail.
英文名称Road vehicles — Test of braking systems on vehicles with a maximum authorized total mass of over 3,5 t using a roller brake tester — Part 2: Air over hydraulic and purely hydraulic braking systems