PURPOSE: To miniaturize the device and obtain a favorable condition of combustion by inserting and fixing a core on one side of the center hole of a bobbin wound with a coil, and arranging an armature on the other side of the center hole of the bobbin.
CONSTITUTION: When a low current is supplied to a coil 7, an armature 8 is moved in the core 9 direction until a metering valve 1 abuts to a stopper 2. Therefore fuel flows in a mixing chamber 6 through a fuel passage 5. Next, when a high current is supplied to the coil 7, a non-return valve 12 in one body with the stopper 2 is opened, mixture of high pressure air from an air supply port 20 and fuel is injected from the extreme end opening part of an injection nozzle 17. In this way, coil is enough to be one and the device can be miniaturized. Further, favorable combustion can be obtained.
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MATSUZAKA MASANORI