Fuel injection valve

Fuel injection valve

  • CN 105,484,920 A
  • Filed: 09/30/2015
  • Published: 04/13/2016
  • Est. Priority Date: 10/01/2014
  • Status: Active Application
First Claim
Patent Images

1. a Fuelinjection nozzle, it for the in-cylinder injection fuel of internal combustion engine, and possesses:

  • Nozzle body, it is for tubular and tip portion is formed coniform;

    Spray orifice, it is through to outer circumferential face from the inner peripheral surface of described nozzle body;

    Valve body, it is incorporated in nozzle body in the mode slid freely, and carries out opening and closing to described spray orifice,The feature of described Fuelinjection nozzle is,Described spray orifice is configured to, and makes the minor diameter of the inner peripheral surface side being positioned at described nozzle body with the outer circumferential face side being positioned at described nozzle body and have compared with described minor diameter that the large-diameter portion in larger aperture is communicated with via end difference,The aperture of described large-diameter portion relative to the ratio in the aperture of described minor diameter is, more than 3.1 and less than 4.0,The length of described large-diameter portion relative to the ratio of the length of described minor diameter is, more than 0.25 and less than 0.55,The length of described large-diameter portion relative to the ratio in the aperture of described large-diameter portion is, more than 0.4 and less than 1.6.

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