The AF120 Air/Fuel Ratio Controller provides cost-effective emissions control for gaseous fueled 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 Catalytic Convertor.

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.

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One module can be used for rich-burn, lean-burn or 4-20 mA operation

Fast start up due to heating of UEGO sensor.

Programmable via easy to use Windows based software

Controls Lambda value with dynamic, single setpoint technology

Adjustable valve start-up position and warm-up time.

Load mapping feature included

The 4-20 mA output can drive pneumatic control valves on engines equipped with turbo waste gate

TECHNICAL
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

Parameter Name	Parameter Value