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Fuel system

  • US 9,234,468 B2
  • Filed: 12/21/2012
  • Issued: 01/12/2016
  • Est. Priority Date: 12/21/2012
  • Status: Active Grant
First Claim
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1. A fuel system for a dual fuel power source, comprising:

  • a first fuel circuit fluidly connected to the power source;

    a second fuel circuit separate from the first fuel circuit and fluidly connected to the power source; and

    a pressure regulator fluidly connected to the first fuel circuit, the pressure regulator configured to vent a first fuel from the first fuel circuit to an aftertreatment system fluidly connected to the power source in response to a pressure difference between the first and second fuel circuits being less than or equal to a pressure difference threshold.

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