×

Electromagnetic fuel injector

  • US 4,384,681 A
  • Filed: 07/30/1980
  • Issued: 05/24/1983
  • Est. Priority Date: 11/01/1978
  • Status: Expired due to Term
First Claim
Patent Images

1. An electromagnetic fuel injector comprising:

  • a valve assembly for receiving pressurized fuel including a valve housing and a valve member having an armature portion, said valve member movable in said valve housing from a closed position to an open position in order to meter fuel from said valve housing;

    an injector body in fluid communication with said valve assembly;

    an electrically energizable stator means, contained within said injector body, for moving said valve member to one of said positions by magnetically attracting said armature portion;

    means for moving said valve member to the other of said positions when said stator means is not energized;

    said stator means including a coil wound on a bobbin wherein said bobbin has a different rate of thermal volume change than said injector body; and

    means for sealing the pressurized fuel within the injector body including resilient means compressed in at least two places between a portion of said bobbin and a portion of said injector body such that the compression increases on said resilient means during temperature decreases.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×