Fuel Injection Valve and Method for Forming Orifice Thereof

  • US 20090242668A1
  • Filed: 08/19/2008
  • Published: 10/01/2009
  • Est. Priority Date: 03/31/2008
  • Status: Active Grant
First Claim
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1. A fuel injection valve comprising:

  • a convex portion prominently formed on an outer end surface of a nozzle body;

    stepped recesses each of which has plural steps formed by press forming on said convex portion; and

    multi orifices as fuel nozzle holes formed by press forming so that an outlet of each of said orifices is located at a bottom face of each of said stepped recesses,wherein said fuel injection valve has plural sets each of which comprises one of said stepped recesses and the relevant orifice;

    said orifices incline to each other;

    a step on a downstream side in each of said stepped recesses has a larger diameter than a step on an upstream side thereof.

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