Fuel injection device for internal combustion engines

A fuel injection device for an internal combustion engine having an intake suction pipe including a fuel distributing mechanism comprising:

• a body having:
• a fuel supply port;
• a plurality of discharge ports supplying injectors which inject fuel into said suction pipe of said internal combustion engine;
• and
• fuel metering ports communicating with said discharge ports;
• a rotor comprising:
• a fuel inlet always communicating with said supply port;
• and
• at least one fuel distributing port communicating with said fuel inlet and cooperating with said fuel metering ports to form fuel metering gate means;
• said rotor being axially slidably and rotatably disposed in said body;
• driving means for driving said rotor in synchronism with the rotation of the engine;
• and
• control means for axially sliding said rotor corresponding to the amount of suction air;
• the arrangement being such that the amount of communication of said fuel metering gate means is controlled by engine rpm and the amount of suction air, wherein a pressure regulator communicates with said supply port and said suction pipe so that the difference between the supply pressure of fuel being supplied to said supply port and the negative pressure in said suction pipe is maintained at a predetermined value.