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Fuel control system and associated method

  • US 8,485,165 B2
  • Filed: 03/05/2010
  • Issued: 07/16/2013
  • Est. Priority Date: 04/10/2006
  • Status: Active Grant
First Claim
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1. A fuel control system for controlling the purging of alternate fuel in an internal combustion engine at shutdown, comprising:

  • at least one valve device configured to deliver a fuel supply to an engine;

    a first fuel source configured to provide a primary fuel to the at least one valve device;

    a second fuel source configured to provide an alternate fuel to the at least one valve device; and

    a controller connected to the at least one valve device and connected to an ignition system, the controller being configured to;

    control the at least one valve device to selectively deliver the primary fuel, the alternate fuel, or a mixture of the primary fuel and the alternate fuel, to the engine; and

    control the at least one valve device to selectively deliver the primary fuel to the engine to purge the alternate fuel in the engine responsive to a shutdown request status of one of the engine and the ignition system.

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