Emissions Control Systems
Air/Fuel Ratio Control for Gas Engines
- Air/Fuel Controller
- CSA Certified Electronics Enclosure
- Emissions Control Display Panel
- Complete Air/Fuel Systems

Select a product type
- Air/Fuel Controller
- Shielded Enclosure
- Display Panel
- Complete Systems
- Overview
AF120 Air/Fuel Control Module
The AF120 Air/Fuel Ratio Controller provides cost-effective emissions control for gaseous fuelled engines used in demanding industrial applications.
- Improves Engine Efficiency
- Automatic Control of Optimum Air/Fuel Ratio
- One Controller for Stoichiometric and Lean Burn Engines
EH12 Shielded Air/Fuel Enclosure
The EH12 Shielded Enclosure is CSA certified, suitable for housing the AF120 air/fuel control module.
- CSA® Certified Class 1, Div. 2, Groups C and D
- Header-type connectors for quick and simple installation
- Compatible with AF120 air/fuel ratio controller
IDU10 Air/Fuel Digital Display
The IDU10 air/fuel display is CSA certified, providing comprehensive control and display functions including: Lambda, Lambda heater resistance, Valve position, Setpoint adjustment and Status flags.
- CSA® Certified Class 1, Div. 2, Groups C and D when used with EH12 enclosure
- Compatible with AF120 Air/Fuel Control Module
- Clear, Intuitive Menu Structure
Complete Emissions Control Systems
Gill can supply complete air/fuel control systems for industrial gas engines. In a typical CSA certified system an AF120 air/fuel controller is installed inside the EH12 shielded enclosure, which is connected in-turn to an IDU10 air/fuel display, fuel valve and oxygen sensor.
System Diagram:
You can also view the PDF version of this Air/Fuel System Diagram.
Gill Emissions Control - for Stoichiometric and lean-burn engines
Gill emissions control products are designed to control emissions of both stoichiometric gaseous-fuelled engines fitted with a catalytic converter and lean burn engines with or without a catalytic converter. Our emissions control systems are proven to reduce engine emissions and keep them low over long periods, with no user adjustment required.
Ideal for industrial use, typical applications for Gill emissions control systems include CHP engines, Generator sets, compressor engines, commercial vehicle engines and fork-lift truck engines.
Complete Emissions Control Systems

Our emissions control systems include an air/fuel control module, fuel valve and oxygen sensor, emissions control displays along with a shielded enclosure that is CSA approved Class 1, Div. 2, Groups C&D.



