... 22 - 33 – 65 – 98 – 20(1)Fuel supply unit is the fuel control equipment before the fuel enters into internal combustion engine,when ... that the pressure,flow,viscosity or temperature,and the fuel meet the requirements of internal combustion engines.(2)This ... the very ordinary model,its configuration integrates oil feed pump,circulating pump,strainer,auto filter or duplex backwash filter,flow meter ...