| 摘要 |
PROBLEM TO BE SOLVED: To improve combustion efficiency, and to purify exhaust by atomizing fuel for a cylinder injection type engine. SOLUTION: An atomizer 6 to be installed in a nozzle part 5 of a fuel injection valve 36 for the cylinder injection type engine has a flow passage enlarged part 8 enlarged in flow passage area than diameter of a nozzle hole 4 of the nozzle part 5 to reduce flowing speed of the fuel injected from the nozzle hole 4, a pair of an upper stage and a lower stage slits 9 and 10 having a flow passage area smaller than that of the flow passage enlarged part 8 and more one pair of an upper stage and a lower stage slits 9 and 10. The upper stage and the lower stage slits 9 and 10 of each pair cross each other to overlap with each other to form a fuel injection hole in a crossing part 35 thereof. Pressure of the fuel to be supplied to the fuel injection valve is 5MPa or more, and a heating means is provided to heat the high-pressure fuel. COPYRIGHT: (C)2005,JPO&NCIPI
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