9 and the electronic control one way valve 19 another end of the second electronic control shutoff valve is disposed on the input main tube 15 located between the pressure convertor 9 and the fuel container 1 when the engine stops the second electronic control shutoff valve 20 is open the dme pressure within the common rail tube 2 is released and reduced to close to the pressure within the fuel container 1 so as to reduce the leakage between the electronic control injector 4 and the engine and improve the system security the generation and control of fuel pressure the engine drives the high pressure pump 6 to rotate when the engine works the engine lubricant is inhaled into the high pressure pump 6 from the working medium case 7 and comes out of the outlet of the high pressure pump 61 after being pressed the electronic control unit 5 uses the relief valve 13 to adjust the output pressure of the high pressure pump 6 and the engine lubricant comes into the pressure inlet of the two position four way solenoid valve 82 the two position four way solenoid valve has two outlets one outlet of the two position four way solenoid valve is communicated with the pressure inlet 82 so as to output the high pressure lubricant into the working medium chamber 9102 and another outlet of two position four way solenoid valve is communicated with the liquid returning vent 83 so as to recycle the lubricant from the working medium chamber 9102 the high pressure lubricant within the working medium chamber.