E3 Full Authority Gas Engine Control System

    Ideal for engines used at landfills, wastewater treatment plants, or bio-gas recovery plants 

    E3 Full Authority System 

    Woodward's E3 Full Authority gas engine control system for lean-burn engines controls the air-fuel ratio by controlling the gas mass flow metering valve (TecJetTM). The Full Authority system enables faster load transients for the engine because it has a faster and more stable control over the air-fuel ratio. The E3 Full Authority system is designed for gas engines used in applications where the energy quality of the fuel supply is variable; such as engines used at landfills, wastewater treatment plants, or bio-gas recovery plants.

    The E3 Full Authority system is a fully-integrated engine control solution with full authority over spark, fuel, and air. Additionally, diagnostics such as detonation and misfire, as well as other health monitoring, are integrated into the system. This fully integrated approach permits precise governing and air-fuel ratio control while remaining flexible enough for large variations in fuel quality.


    The E3 Full Authority Control System features include: 

    • Allows operation of engine on different fuels while maintaining engine efficiency
    • Integrated approach reduces system complexity and reduces overall cost
    • Utilizes speed-density-based air/fuel ratio controller
    • Can handle gas quality changes of ±10% CH4
    • Can handle gas quality changes between 20–100% CH4 with use of an external gas quality analyzer
    • Flexible programming


    E3 emission control systems can be retrofitted to your existing engines by a Woodward Recognized Engine Retrofit (RER) partner. Find information on an RER in your area from the listing below.


    Recognized Retrofit Partners

    Alberta Governor Service: Western Canada provinces of British Columbia, Alberta, Saskatchewan, Manitoba 

    Provinces of New Brunswick, Newfoundland and Labrador, Nova Scotia, Ontario, Prince Edward Island, and Quebec, and territories of Northwest Territories, Nunavut, and Yukon--select an RER closest to you.

    Drake Controls: California, Kansas, Oklahoma, New Mexico, southwestern Nevada, Texas, Mexico

    Governor Control Systems: Alabama, Arkansas, Florida, Georgia, Kentucky, Louisiana, Mississippi, North Carolina, South Carolina, Tennessee, Virginia, West Virginia

    Peaker Services: Midwest: Illinois, Indiana, Iowa, Michigan, Minnesota, Missouri, Nebraska, North Dakota, Ohio, South Dakota, Wisconsin; Northeast: Connecticut, Delaware, Maine, Maryland, Massachusetts, New Hampshire, New Jersey, New York, Pennsylvania, Rhode Island, Vermont.

    Winn-Marion: Rocky Mountains: Arizona, Colorado, Idaho, Montana, Nevada, New Mexico, Utah, Wyoming; western Nebraska, western North Dakota, western South Dakota

     Alaska, Oregon, Washington, Hawaii: Select an RER closest to you.


    Recognized Retrofit Partners

    Governor Control Services