拖拉机及其它柴油发动机输出功率的测量,是发动机众多测量项目中最普通的一种。传统的测功方法及测功设备已很成熟并得到十分广泛的应用,但必须将发动机装在一专门设备(测功器)上进行测量,费时、费力又很不方便。近几年发展起来的无负荷测功技术,虽解决了上述问题,但测功范围仅局限于额定功率或最大功率,而且只能以此来判断发动机的大 Tractor and other diesel engine output power measurement, the engine is the most common measurement of many items. The traditional methods of dynamometry and dynamometer have been very mature and have been widely used, but the engine must be installed on a special equipment (dynamometer) to measure, time-consuming, laborious and inconvenient. In recent years, the development of load-free dynamometry technology, although to solve the above problems, but the scope of measurement is limited to the rated power or maximum power, and can only be used to determine the large engine