| 摘要 |
<P>PROBLEM TO BE SOLVED: To measure cavitation rate in a nozzle hole of a nozzle, efficiently control cavitation rate in the nozzle hole of the nozzle, or control flow rate coefficient in the nozzle hole of the nozzle constant. Ž<P>SOLUTION: This fuel jet device includes the nozzle 10 supplying fuel to an internal combustion engine through the nozzle hole 16, electrodes 20 disposed on an inner surface of the nozzle hole 16, and a calculation part 24 measuring dielectric constant between the electrodes 20 and calculating cavitation rate of fuel in the nozzle hole 16 based on the dielectric constant. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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