The fuel injection pump 0 460 424 298 is mainly composed of four major parts: the oil pump mechanism, the fuel supply adjustment mechanism, the driving mechanism, and the fuel injection pump body. The oil pump mechanism includes the plunger coupling, the oil delivery valve coupling, etc.; the oil supply volume adjustment mechanism refers to the rack-type oil volume regulation mechanism; the driving mechanism includes the camshaft, tappet components, etc.; the fuel injection pump body is the installation of the above three matrix.