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Electromagnetic valve actuator

  • US 6,082,315 A
  • Filed: 09/03/1998
  • Issued: 07/04/2000
  • Est. Priority Date: 09/03/1998
  • Status: Expired due to Fees
First Claim
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1. An electromagnetic actuator for an actuated valve mounted onto a cylinder head, the valve having a valve stem and a valve step tip, the actuator comprising:

  • at least one pair of electromagnets, each pair of electromagnets further comprising an upper electromagnet and a lower electromagnet, wherein the upper and lower electromagnets of said pair are in a mirror relationship to each other about a central vertical axis, said lower electromagnet further having a channel disposed therein;

    an armature element disposed intermediate said upper and lower electromagnet, said armature element having a normally biased initial first position when said upper and lower electromagnets are off, a second fixed open position proximal said lower electromagnet when said lower electromagnet is energized, and a third fixed close position proximal said upper electromagnet when said upper electromagnet is energized;

    an armature shaft integrally attached to said armature element and extending vertically through said channel of said lower electromagnet;

    an tipper spring retainer assembled onto said armature shaft;

    a support member having a first end and a second end, said first end of said support member integrally attached Lo said upper spring retainer;

    a target disposed on said second end of said support member;

    an upper spring disposed intermediate said upper spring retainer and said lower electromagnet;

    a valve spring retainer mounted onto the valve stem;

    a valve spring disposed intermediate said valve spring retainer and the cylinder head; and

    a sensor having a cylindrical wall, said cylindrical wall encompassing said valve spring and defining a gap to receive said target.

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