Fuel injection device

A fuel injection device for injecting liquid fuel through a fuel injection valve provided on an intake pipe of an engine, said device comprising:

• fuel atomizing means for jetting out air to the liquid fuel injected through said fuel injection valve to atomize the liquid fuel,
• air supply means provided with an on/off control valve for cutting off air supplied to said fuel atomizing means,
• control means for receiving various detection signals indicative of an engine cooling water temperature, an engine rotational speed, an amount of intake air, etc., controlling a valve-opening time of said fuel injection valve in accordance with a predetermined control program, and also controlling said on/off control valve, and
• fuel incrementing means for increasing an amount of the liquid fuel injected through said fuel injection valve, when said on/off control valve is operated from an open state to a closed state to cut off the air supplied to said fuel atomizing means.

A fuel injection device for injecting liquid fuel through a fuel injection valve provided on an intake pipe of an engine, said device comprising:

• fuel atomizing means for jetting out air to the liquid fuel injected through said fuel injection valve to atomize the liquid fuel,
• air supply means provided with an on/off control valve for cutting off air supplied to said fuel atomizing means,
• control means for receiving various detection signals indicative of an engine cooling water temperature, an engine rotational speed, an amount of intake air, etc., controlling a valve-opening time of said fuel injection valve in accordance with a predetermined control program, and also controlling said on/off control valve, and
• a fuel increment modifying value map for low temperature with which an increment value of the liquid fuel injected through said fuel injection valve is reduced depending on said engine cooling water temperature to become smaller at the higher engine cooling water temperature, and a fuel increment modifying value map for high temperature in which said increment value of the liquid fuel is set larger than that in said fuel increment modifying value map for low temperature, and
• fuel increment control means for selecting said fuel increment modifying value map for low temperature when said on/off control valve is open, and selecting said fuel increment modifying value map for high temperature when said on/off control valve is closed, thereby controlling said increment value of the liquid fuel injected through said fuel injection valve.