FUEL PRESSURE CONTROLLER OF INTERNAL COMBUSTION ENGINE

摘要

PURPOSE: To control the pressure of fuel to be injected accurately. CONSTITUTION: Fuel discharged from a fuel pump 13 is supplied into a fuel reservoir 10 and the fuel in the fuel reservoir 10 is distributed to each fuel injection valve 3. A fuel pressure sensor 42 is installed on the fuel reservoir 10 and an O2 sensor 43 is installed on an exhaust manifold 9. The fuel pressure in the fuel reservoir 10 is usually controlled based on the output signal of the fuel pressure sensor 42 and the O2 sensor 43 and controlled based on the output signal of the O2 sensor 43 at the time of the trouble of the fuel pressure sensor 42.