汽车车速表和转速表

[中文适用范围]： 本 SAE 推荐做法适用于个人或商业用途的客车、公共汽车和卡车的车速表、里程表和车速表驱动器。确定单位距离车轮转数和整体系统设计变化的方法仅适用于乘用车。针对卡车和公共汽车的类似建议正在制定中。如前所述，转速计的数据适用于车辆用途，也适用于固定式和船用发动机以及特种车辆。 [外文原描述]： This SAE Recommended Practice applies to speedometers, odometers, and speedometer drives typical of passenger vehicles, buses, and trucks used for personal or commercial purposes. The method of determining wheel revolutions per unit distance ( 3.1 ) and overall system design variation ( 3.3.3 ) are applicable to passenger cars only. Comparable recommendations for trucks and buses are under development. The data of tachometers is applicable to vehicular use, as previously described, and also to stationary and marine engines and special vehicles.Cross Reference: J862,J862_201108,J966_201911