着重介绍用单片机对中小型柴油机性能参数进行检测的原理、方法及硬件电路的设计。它集机械、微电子、软件工程技术为一体,实现了对扭矩、转速、功率、油耗的计算机辅助测试及曲线绘制。解决了机械式功率油耗测试仪安装操作复杂、测试精度低、误差大、计算繁琐、效率低的问题。 The principle, method and design of hardware circuit of single-chip microcomputer for testing performance parameters of small and medium-sized diesel engines are mainly introduced. It combines mechanical, microelectronics, software engineering as a whole, to achieve the torque, speed, power, fuel consumption of computer-aided testing and curve drawing. Solve the mechanical power consumption tester installation complexity, low accuracy, error, calculation is complicated, the problem of low efficiency.