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.
Features
Specifications
Documentation
Compatible Products
Outputs to stepper or current controlled bypass valves
Fast start up due to heating of UEGO sensor
Controls Lambda value to set-point by means of proportional, integral control loop
Programmable valve start position and offset
Programmable load map
The 4-20 mA output can drive pneumatic control valves on engines fitted with turbo waste gate
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
Supply Voltage
12-24 VDC
Environmental
-40ºC to +90ºC, sealed to IP67
Certification
CSA® Certified Class 1, Div. 2, Groups C and D when installed in the EH12 shielded enclosure
+44(0)1590613500 
ignition@gill.co.uk
AF120 Air/Fuel Ratio Controller
