Air Fuel Ratio Controller

AF120™

  • Emissions Control for Industrial Gas Engines
  • Automatic Control of Optimum Air/Fuel Ratio
  • Improves Engine Efficiency
  • No Manual Engine Tuning Required

Air Fuel Ratio Controller

AF120 Air Fuel Ratio Controller

The AF120 Air/Fuel Ratio Controller provides cost-effective emissions control for gaseous fuelled engines used in demanding industrial applications. The module 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 AF120 Air/Fuel Ratio Controller can be used within a variety of control systems. In the carburettor bypass configuration the Gill AF120 fuel valve can be utilised. Alternatively the module can be used to control fuel pressure regulator systems and systems requiring turbo waste gate control.

Air Fuel Controller Technical Information

  • Features
  • Specifications
  • Documentation
  • Outputs to stepper or current controlled bypass valves
  • Fast start-up due to heating of UEGO sensor
  • Programmable via easy to use Windows® based GUI
  • Controls lambda value to set-point by means of proportional, integral control loop
  • Programmable valve start position and offset
  • Programmable load map
  • 4-20mA output can drive pneumatic control valves on engines fitted with turbo waste gate
Supply Voltage
12-24 VDC
Operating Temperature
-40ºC to +90ºC
Environmental Protection
IP67
Inputs
Throttle position or MAP sensor for load mapping.
Wideband UEGO sensor for exhaust oxygen measurements.
Additional sensor inputs for more rigorous applications.
Outputs
AF120 Fuel Valve or 4-20mA controlled valve
Communications
RS232 for programming via Windows® based GUI
Certification
CSA® Certified Class 1, Div. 2, Groups C and D when installed in the EH12 shielded enclosure

Air/Fuel Ratio Controller Enquiry