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Pressure responsive valve for a compensator in a solid state actuator

  • US 20020047100A1
  • Filed: 10/11/2001
  • Published: 04/25/2002
  • Est. Priority Date: 10/11/2000
  • Status: Active Grant
First Claim
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1. A fuel injector, the fuel injector comprising:

  • a housing having a first housing end and a second housing end extending along a longitudinal axis, the housing having an end member disposed between the first and second housing ends;

    a length-changing solid-state actuator disposed along the longitudinal axis;

    a closure member coupled to the length-changing actuator, the closure member being movable between a first configuration permitting fuel injection and a second configuration preventing fuel injection; and

    a compensator assembly that moves the length-changing actuator with respect to the housing in response to temperature changes, the compensator assembly including;

    a body, the body including an interior surface defining a first fluid reservoir and a second fluid reservoir that are disposed between a first body end and a second body end;

    a valve spacer disposed between the first fluid reservoir and the second fluid reservoir, the valve spacer having a first spacer face and a second spacer face; and

    a plate contiguous to one of the first and second faces;

    the plate being responsive to one of a first fluid pressure in the first fluid reservoir and a second fluid pressure in the second reservoir so as to permit fluid flow from one of the first and second fluid reservoirs to the other of the first and second fluid reservoirs.

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