Electrocontrolled oil injector for electrocontrolled high-pressure common rail diesel oil injecting system

The utility model relates to an electronically controlled injector used in electronically controlled high pressure common rail diesel fuel injection system, which relates to an injector used in electronically controlled high pressure common rail diesel fuel injection system, the injection fuel is controlled by the overflow of an electromagnetic valve. An electromagnetic controlled bypass valve is built in the upper body of the traditional mechanical injector in the injector, a pressure regulating seat is arranged below the electromagnetic valve, the upper end of the pressure regulating seat is provided with two small oil holes, the lower end of the pressure regulating seat is provided with a small oil hole. The upper two small holes are communicated with a high pressure oil intake channel, a needle valve upper end cavity and the oil intake channel of the electromagnetic valve respectively via a tee joint, the lower small hole is communicated with the high pressure oil intake channel and the needle valve upper end cavity. The injector can be conveniently applied to various diesel engines, no mechanical modifying is needed when installed, furthermore, the pressure of the fuel in the injector can be independent to the speed of the engine, the fuel injection can be controlled at any moment, realizing the ideal fuel injection curves such as the pre-injection, the injection timing and the quantity of the fuel injection can be flexibly regulated. The utility model can be used in large or middle diesel engines with power of greater than 80 KW.