The unit pump is a device for generating the injection pressure of the injector (or injector). For single-pump electric fuel injection system engine, there are several cylinders, there are several single-pump, single-pump is the second generation of electronically controlled fuel injection system, according to the high pressure generating device may be different The fuel injection system is divided into distribution pump, inline pump, pump nozzle and single pump electric fuel injection system. More keyword search: Monomer pump