Fuel injector
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United States of America Patent
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May 3, 2016
Grant Date -
Sep 3, 2015
app pub date -
Feb 19, 2015
filing date -
Feb 28, 2014
priority date (Note) -
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Abstract
A fuel injector has a cylindrical nozzle body, a nozzle needle, a pressure chamber and an injection passage. The injection passage includes a first hole and a second hole. A minimum vertical distance between an outer periphery of a first nozzle hole outlet and a contact point relative to an axial center line of the first hole is defined as a vertical distance R. A minimum axial distance between the first nozzle hole outlet and the contact point relative to an axial center line of the first hole is defined as an axial distance L. An angle between the axial center line of the first nozzle hole and the outer periphery line of the fuel spray is defined as an injection angle θ. The vertical distance R, the axial distance L and the injection angle θ satisfy a formula: R/(L×tan θ)>6.0.
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