Rotating speed measuring method of electronic control diesel engine

According to the rotating speed measuring method of the electronic control diesel engine, the electronic control diesel engine comprises a diesel engine and a generator which are connected with each other, in the vehicle running process, an oil injector of the diesel engine is monitored through an open-loop current sensor, and a magnetic flux leakage part of the generator is monitored through a magnetic flux leakage sensor; an oil injection current signal and a magnetic flux leakage current signal are obtained respectively, the oil injection current signal and the magnetic flux leakage current signal are filtered through a signal sorting circuit, an obtained oil injection pulse signal and an obtained magnetic flux leakage pulse signal are transmitted to a single-chip microcomputer, and the single-chip microcomputer calculates the oil injection measurement rotating speed according to the oil injection pulse signal. According to the method, the operation is convenient, the generator is used for assisting the me