在动力测试中转矩 M 及转速 n 是发动机的二项主要参数,因而在各类发动机的性能测试中精确地测量转矩和转速至为重要。目前国内主要采用传递型测试设备,这类设备只传递被测转矩而不消耗功率。通常由转矩转速仪及转矩传感器二部分配套组成。传感器装在待测转矩设备及负载之间,将转矩转换成各种形式的电量,而测量仪表则用来指示或显示被测转矩值。数字式转矩转速测量仪目前已为各机械行业推广使用,随着对测试手段要求的提 Torque M and speed n are the two main parameters of the engine during the dynamic test, so it is important to accurately measure the torque and speed in various types of engine performance tests. At present, the main transmission test equipment, this type of device only transmits the measured torque without consuming power. Usually by the torque converter and torque sensor two parts supporting composition. The sensor is installed between the torque device under test and the load, converting the torque into various forms of electricity, while the measuring instrument is used to indicate or display the measured torque value. Digital torque speed measuring instrument has been promoted for use in various machinery industries. With the requirement of testing methods