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AF120 - air/fuel ratio control system
AF120 - air/fuel ratio control system
The AF120 Air/Fuel Control System by Gill Instruments is designed for efficient emissions control in gaseous fueled engines. It is suitable for applications such as cogeneration, water pumping, gas compression, and power generation. The system is maintenance-free, robust, fully programmable, and features advanced diagnostics.
Key Features
- Advanced closed-loop control for precise air/fuel ratio management.
- Maintenance-free operation with robust construction.
- Fully programmable with a single controller.
- Advanced diagnostics for enhanced performance monitoring.
- Multiple set points for lean and stoichiometric burn operations.
Applications
- CHP engines
- Generator set engines
- Compressor engines
- Commercial vehicle engines
- Forklift truck engines
System Components
- AF120 control module
- Wideband oxygen sensor
- Wiring harness
- Control valve
- Software and documentation
Technical Specifications
- Power Supply: 12V or 24V DC, automatically sensed.
- Environmental: Operates between -40°C to +90°C, sealed to IP67.
- Inputs: Throttle position or MAP sensor, wideband UEGO sensor.
- Outputs: AF120 fuel valve or 4-20 mA controlled valve.
- Communications: RS232 for programming via Windows® based GUI.
System Operation
The AF120 system uses a wideband oxygen sensor (UGEO) for accurate measurement of oxygen concentration in the exhaust. This allows for precise control of the air/fuel mixture, ensuring compliance with emissions standards over time. The system is capable of adjusting to changes in engine load quickly and accurately.
Optional Display
The IDU10 display provides intuitive navigation and displays key parameters such as Lambda, setpoint, valve position, and status flags. It is available in panel or surface mount variants.
Ordering Information
- AF120 AFRC: Part No. 1495-00-026
- AF120 air fuel valve: Part No. 1495-00-030
- A/F Wiring Loom: Part No. 1495-00-022
- Oxygen Sensor: Part No. 1495-00-031
- IDU10 Display panel mount: Part No. 1609-00-010
- IDU10 Display surface mount: Part No. 1609-00-033
Catalog excerpts
Throttle position or MAP sensor for load mappingWideband UEGO sensor for exhaust oxygen measurements. O > UTPUTS AF120 fuel valve, or 4-20 mA controlled valve.RS232 for programming via Windows based GUI Additional sensor inputs for more rigorous applications C > OMMUNICATIONS ENGINE CONTROLS
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The AF120 Air/Fuel ratio control system provides cost effective emissions control for gaseous fueled engines used in demanding applications such as Cogeneration, Water Pumping, Gas Compression and Power Generation, with a proven track record of reducing emissions, and more importantly holding emissions over a long term without constant manual engine tuning.The AF120 System is designed to accurately control the air/fuel ratio of stoichiometric engines fitted with a three way catalytic converter, and lean burn engines with or without a cat. The system consists of the AF120 control module, a wide...
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