重型商用车辆和客车.具有裂口摩擦系数的正向前方地面制动系统.开环试验方法

[中文适用范围]： 本国际标准描述了一种开环测试方法，用于确定车辆在具有分裂摩擦系数的表面上进行直线制动操作时的反应。 它适用于重型车辆，即 ISO 3833 中定义的商用车、商用车组合、公共汽车和铰接式公共汽车（根据 ECE 的规定，最大重量超过 3.5 吨的卡车和拖车以及最大重量超过 5 吨的公共汽车和铰接式公共汽车）和 EC 车辆分类，类别 M3、N2、N3、O3 和 O4）。 该方法限于至少第一单元配备有防抱死制动系统的车辆。 它仅适用于仅使用行车制动系统或与缓速器和/或发动机制动器结合使用的制动。 [外文原描述]： ISO 16234:2006 describes an open-loop test method for determining vehicle reactions during a straight-line braking manoeuvre on a surface having a split coefficient of friction. It applies to heavy vehicles, i.e. commercial vehicles, commercial vehicle combinations, buses and articulated buses as defined in ISO 3833 (trucks and trailers with maximum weight above 3,5 tonnes and buses and articulated buses with maximum weight above 5 tonnes, according to ECE and EC vehicle classification, categories M3, N2, N3, O3 and O4). The method is limited to vehicles in which at least the first unit is equipped with an anti-lock braking system. It is valid for braking with service-brake systems only or in combination with retarders and/or engine brakes.