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PROCESS FOR USE WITH DUAL-FUEL SYSTEMS

  • US 20070157912A1
  • Filed: 03/21/2007
  • Published: 07/12/2007
  • Est. Priority Date: 03/10/2004
  • Status: Active Grant
First Claim
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1. A gaseous-fuel fumigation system for use with a diesel engine, comprising:

  • a valve disposable in a flow path between a gaseous-fuel supply and an air intake stream of a diesel engine, the valve being operative to regulate a flow volume of a gaseous-fuel through the flow path;

    a pressure sensor operative to generate a pressure signal indicative of a pressure level of the air intake stream of the diesel engine;

    an oxygen sensor operative to generate an oxygen content signal indicative of an oxygen content of an exhaust stream of the diesel engine; and

    a controller operative to;

    receive the pressure signal and the oxygen content signal;

    compute a desired gaseous fuel flow volume based on the pressure level and the oxygen content; and

    generate valve control signals for operating the valve to establish the desired gaseous fuel flow volume through the flow path.

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