Filtration system for providing clean fuel

  • US 10,471,374 B2
  • Filed: 02/26/2013
  • Issued: 11/12/2019
  • Est. Priority Date: 03/29/2012
  • Status: Active Grant
First Claim
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1. A filtration system configured to be connected to a main fuel tank for storing contaminated fuel and to be connected to a fuel supply of a combustion engine, the filtration system comprising:

  • a filtration circuit including a first filter, a first auxiliary fuel tank for containing fuel, a cleanliness measuring device that is fluidly coupled to a fuel flow passage of the filtration circuit, and a first fuel pump configured to pump the fuel from the first auxiliary fuel tank through the filtration circuit and back to the first auxiliary fuel tank;

    a second auxiliary fuel tank in selective fluid communication with said first auxiliary fuel tank via a transfer valve for receiving fuel from said first auxiliary fuel tank via the transfer valve, the second auxiliary fuel tank being fluidly coupled in series between the first auxiliary fuel tank and the fuel supply of the combustion engine to provide fuel to the combustion engine; and

    a control unit operatively coupled to the transfer valve and the cleanliness measuring device, the control unit being configured toreceive a cleanliness signal from the cleanliness measuring device that is indicative of a level of cleanliness of the fuel within the filtration circuit,compare the cleanliness signal to a desired contamination level, andopen the transfer valve to effect fluid communication between the first auxiliary fuel tank and the second auxiliary fuel tank via the transfer valve in response to the cleanliness signal meeting the desired contamination level.

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