Dual Fuel Mixer : Diesel – Natural Gas Valve

The OptiBlend® proprietary Air-Gas Mixer (AGM) is installed just downstream of the stock intake air filter where it dictates the air-to-gas ratio in conjunction with the OptiBlend® Fuel Control Valve (FCV). The gas train feeds the mixer(s) via an infinitely-adjustable throttle valve (butterfly-style) giving better control over the system than anything else on the market. These components offer multiple redundant shutoffs to stop the flow of gas: the throttle and the solenoid can be closed manually, the manual ball valve can be closed, and there is an E-Stop button that will de-energize the system completely. Additionally, by design, the zero pressure regulator (ZPR) cannot allow gas to flow unless it senses suction from the engine. This ensures natural gas is only drawn into the engine and is never forced in under pressure which is inherently safer. OptiBlend® uses the fumigation method and Venturi-style mixers to introduce natural gas into the intake airstream of a diesel engine.

dual fuel gas train

The Optiblend® gas train can utilize the following gas sources:

  • liquid & compressed natural gas
  • wellhead gas
  • methane
  • low/high BTU methane
  • propane
  • biomethane

The gas train is built with a series of components listed below:

  • filter
  • manual ball valve
  • lock off solenoid
  • zero pressure regulator

The gas train requires a supply gas pressure of 3-5 psi. A primary pressure regulator can be provided if the gas supply pressure is too high. The filter protects the gas train and engine from particulate contaminants which may be present in the gas stream. The gas lock-off solenoid is a 24V single-stage solenoid controlled by the Programmable Logic Control (PLC). The zero pressure regulator detects changes in engine vacuum through the mixer to maintain approximately atmospheric pressure and prevent over-fueling.

dual fuel mixer valve installation

The proprietary air-gas mixer design was developed by Eden Innovations LLC and will be sized specific to your engine and application. Our team of engineers will develop specifications for your OptiBlend® dual fuel conversion kit to ensure site installation is flawless.

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    OptiBlend :: Savings & CO2 Offset Calculator

    100% Diesel Operation

    Assumed Efficiency Diesel


    Estimated Efficiency Dual Fuel




    Diesel Power Required


    Annual Operating Hours


    Annual Energy


    kJ Required


    Annual Liters of Diesel


    Annual Gallons of Diesel


    Cost/Gallon Diesel


    Annual Fuel Costs

    Dual Fuel Operation

    Displacement (assumed)


    Diesel Power Required


    NG energy/volume


    kW from natural gas


    scf NG Required


    NG Cost/scf


    Annual NG Cost


    Annual Diesel Cost


    Total Annual Dual Fuel Cost


    Total Annual Savings


    Savings as a %


    Ready for Any Industry.

    Learn why OptiBlend® is the answer to lower fuel costs, improve emissions, and increase runtime in any industry.

    OptiBlend :: Savings & CO2 Offset Calculator
    Generator Size (KW)
    Generator Load
    Gallons / hr
    $ / Gallon
    $ / Hour
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    $ / Year
    CO2 total lbs

    *calculation assumes 70% displacement, 1 Gallon CNG = 5.66lbs , Diesel Equivelant = 6.384 lbs
    **calculations are based on your input data and are approximations