| 摘要 |
PURPOSE:To prevent deterioration of coaxiality in an ignition plug integrated with an injector by making fuel flow a gap on a sectional surface symmetrically formed across a center shaft between an insulating body and an outer cylinder, which fuel is introduced to an injection port, and equalizing temperature distribution around the center shaft. CONSTITUTION:An electric conductor which is connected to a center electrode (needle housing) 8 provided on an axial leading end is arranged on a very center in a diameter direction. An outer cylinder is arranged with a gap on an outer side in a diameter direction of an insulating body surrounding the electric conductor. Fuel which is supplied from a fuel pipe is introduced through a connection member, a flow passage between a first cylindrical body 21 and a first housing 28, and a flow passage between a third cylindrical body 26 and the first housing 28, to outside of a fuel passage arrangement member 27. The fuel is also supplied to a portion determined by upper surfaces of a shaft 7a of an intermediate guide 7b of a needle 7, a bottom surface of a third insulating body 13, and the needle housing 8. When the needle 7 is pulled up through current carrying to a solenoid coil 30, the fuel is injected through an injection port.
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