发动机异响诊断仪是根据发动机异响中心频率和发响时机曲轴相位角度值诊断发动机故障的仪器。它的特点是:诊断准确、快速,使用方便,操纵简单,结果显示直观,易于推广应用。一、仪器概述本仪器基于振动与声学原理和发动机工作原理,利用发动机三个信息(一缸点火信号、分电器触点信号、声响或振动信号),通过仪器电子线路,对发动机声响或振动进 Engine abnormal sound diagnostic instrument is based on the frequency of engine abnormal sound center and crankshaft timing angle value of the diagnosis of engine failure instrument. It is characterized by: accurate diagnosis, rapid, easy to use, easy to operate, the results show that intuitive, easy to promote the application. First, the instrument overview The instrument based on vibration and acoustic principles and engine working principle, the use of three engine information (a cylinder ignition signal, distributor contact signal, sound or vibration signal), through the instrument electronic circuit, the engine sound or vibration into