Fuel injector assembly

The utility model relates to a new fuel injector assembly; the structure is improved on the base of original diesel engine fuel injector. Pressure regulation equipment adopts pressure regulating screw (9) and pressure regulating rod (7)split-type structure, subsection-combine assembling inside the inner hole of the fuel injector body(8), the matching performance is greatly raised, the fuel injector mating part(3) is made fit seat well and quickly, the combustion condition is improved. The top of the flange disc (F) of the fuel injector body (8) adopts concave platform (Z) structure, the volume of fuel injector body (8) is reduced, the weight is lightened, the material is saved. The utility model can match with various 95~130mm cylinder diameter directly injecting diesel engine, the combustion economy is well realized.