Fuel system of an internal combustion engine

F - Mech Eng,Light,Heat,Weapons – 02 – M

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F02M 21/02 (2006.01) F02B 3/06 (2006.01)

Patent

CA 2041442

FUEL SYSTEM OF AN INTERNAL COMBUSTION ENGINE Abstract A fuel system comprises a diesel fuel feeding line communicating by one end with a fuel tank and by the other end with a high pressure fuel pump in turn commu- nicating with engine cylinders connected to an air feed- ing line, and a gas feeding line whose one end is con- nected to a gas source and the other end is connected to a Venturi tube communicating with the air feeding line. A pedal is operatively connected to a rack of the pump and to a gate provided in the gas feeding line, The fuel system is further provided with a sole- noid for limiting the movement of the rack of the pump to one of the extreme positions "diesel fuel" or "gas fuel" electrically connected to a switch. The switch is electrically connected to a solenoid-operated valve positioned in the gas feeding line. This line also includes a gas pressure regulator. The rack is operati- vely connected to a pneumomechanical valve connected to the Venturi tube and to the gas pressure regulator. The proposed fuel system can be used in wheeled vehicles, such as trucks 3 to 120 tons in load-carrying capacity, and can ensure a 70 to 80% reduction the amount of diesel fuel consumed.

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