FUEL INJECTION VALVE

  • US 20090272824A1
  • Filed: 01/16/2009
  • Published: 11/05/2009
  • Est. Priority Date: 05/01/2008
  • Status: Active Grant
First Claim
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1. A fuel injection valve comprising:

  • an electromagnetic solenoid assembly, anda valve main body including a valve body operated by said electromagnetic solenoid assembly to be brought into and out of contact with a valve seat of a valve seat member for controlling the injection of fuel from an injection port having an axis inclined relative to an end face of said valve seat member;

    whereinsaid injection port includes a first injection port disposed at a downstream side of said valve seat, and a second injection port disposed at a downstream side of said first injection port and having a diameter larger than that of said first injection port;

    central axis of said first injection port and central axis of said second injection port being parallel to each other;

    a bottom wall of said second injection port intersecting with the central axis of said first injection port; and

    whereinthe central axis of said second injection port is out of alignment with respect to the central axis of said first injection port so that W1>

    W2 is established when M1>

    M2,where M1 is the largest length of a longer-side line along which a plane including the central axis of said valve seat member and the central axis of said second injection port intersects with an inner wall of said second injection port;

    M2 is the smallest length of a shorter-side line along which said plane intersects with an inner wall of said second injection port;

    W1 is the distance from the inner wall of said first injection port to said longer-side line of said second injection port as measured within said plane; and

    whereW2 is the distance from the inner wall of said first injection port to said shorter-side line of said second injection port as measured within said plane.

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