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Integrated fuel injector igniters having force generating assemblies for injecting and igniting fuel and associated methods of use and manufacture

  • US 8,561,591 B2
  • Filed: 01/10/2012
  • Issued: 10/22/2013
  • Est. Priority Date: 12/06/2010
  • Status: Expired due to Fees
First Claim
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1. An injector for introducing fuel into a combustion chamber and igniting fuel, the injector comprising:

  • an injector body includinga base portion having a fuel inlet for receiving fuel into the body;

    a nozzle portion coupled to the base portion and positioned to inject fuel; and

    an enclosure member at least partially defining a fuel flow channel for transporting fuel from the base portion to the nozzle portion, wherein the enclosure member includes a fuel exit port;

    an ignition electrode at the nozzle portion for generating an ignition event to at least partially ignite fuel;

    a flow control valve at the nozzle portion, wherein the flow control valve is radially expandable from a closed position covering the fuel exit port to an open position exposing the fuel exit port; and

    a piezoelectric force generator operably coupled to the flow control valve, wherein activation of the piezoelectric force generator expands the flow control valve from the closed position to the open position.

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