Fuel feed control system of internal combustion engine

In a fuel supply system for supplying a predetermined amount of fuel to main combustion chambers as well as to auxiliary combustion chambers of a torch type internal combustion engine, said fuel supply system including a fuel injection pump for pumping the fuel into said main and auxiliary combustion chambers from a fuel tank;

• a plurality of main fuel injectors respectively mounted in a plurality of main branches which are respectively communicated with said main combustion chambers through main intake valves, said main fuel injectors being fluidly and parallelly connected to said fuel injector pump through a first common conduit;
• and a plurality of auxiliary fuel injectors respectively mounted in a plurality of auxiliary branches which are respectively communicated with said auxiliary combustion chambers through auxiliary intake valves, said auxiliary fuel injectors being fluidly and parallelly connected through a second common conduit to said fuel injection pump, the improvement comprising a plurality of first orifices associated with respective said main fuel injectors, each of said first orifices being disposed in a position immediately upstream of the corresponding main fuel injector in said first common conduit;
• a plurality of second orifices associated with respective said auxiliary fuel injectors, each of said second orifices being disposed in a position immediately upstream of the corresponding auxiliary fuel injector in said second common conduit;
• and means for controlling the amount of fuel led into said first and second fuel injectors in synchronism with the engine intake stroke.