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FUEL PREHEATING USING ELECTRIC PUMP

  • US 20130192679A1
  • Filed: 07/05/2012
  • Published: 08/01/2013
  • Est. Priority Date: 02/01/2012
  • Status: Active Grant
First Claim
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1. A fuel system for an auxiliary power unit, the fuel system comprising:

  • a mechanical fuel pump for providing fuel flow to the auxiliary power unit, the mechanical fuel pump having an output dependent upon an operational speed of the auxiliary power unit;

    an electric fuel pump located in series with the mechanical fuel pump; and

    a controller for causing the electric fuel pump to circulate and thereby warm fuel prior to start up of the auxiliary power unit.

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