GAS ENGINE CONTROLS
AF120
Closed-loop air/fuel ratio control for spark-ignited gaseous-fuel engines.
AF120 is the only control in the range that is not an ignition module. It holds the mixture on target using exhaust oxygen from a Bosch UEGO lambda sensor, driving stepper or current-controlled bypass valves.
IP67 rated
Rugged control unit
Closed-loop control
Bosch UEGO lambda sensor
CAN, 4-20mA or RS232
Plus bypass valve drive
Gaseous-fuel engines
Spark-ignited, stationary
WHERE IT SITS
AF120 in the Gas engine controls range
THE DIFFERENCE
What makes this one different
It does a different job from GT6, GS8 and GS12. Those control when the spark arrives and how long it lasts. AF120 controls what is being ignited.
SPECIFICATION
Full specification
Figures from the current datasheet. Confirm the current issue before ordering.
Measurement
| Function | Closed-loop air/fuel ratio control |
|---|---|
| Fuel | Spark-ignited gaseous-fuel engines. Specific fuel compatibility depends on the engine and package |
| Sensor | Bosch UEGO lambda sensor, monitoring exhaust oxygen |
| Actuation | Stepper or current-controlled bypass valves |
| Cylinders | Not applicable, it is not an ignition module |
Outputs and power
| Outputs | Drives stepper or current-controlled bypass valves |
|---|---|
| Interface | CAN, 4 to 20 mA and RS232 |
Environment
| Ingress protection | IP67 |
|---|
Approvals and documentation
| Datasheet | AF120 datasheet and manual. Confirm the current issue |
|---|
COMPARE
AF120 against the ignition modules
| AF120 | GT6 | GS8 | GS12 | |
|---|---|---|---|---|
| Function | Air/fuel ratio control | Ignition | Ignition | Ignition |
| Cylinders | Not applicable | 1 to 6 | 1 to 8 | 1 to 12 |
| Interface | CAN, 4 to 20 mA and RS232 | RS232 | RS232 | RS232 |
| Ingress protection | IP67 | IP67 | IP67 | IP67 |
AF120 against the three ignition modules. They are not competing products. Compare the whole range
ACCESSORIES
AF120 accessories
The valve assembly and UEGO wiring loom for the AF120 air/fuel ratio controller.
Air/fuel components
- Air/fuel valve assembly
- UEGO air/fuel wiring loom
Order accessories with your sensor or on their own. Quote the part number when you get in touch.
QUESTIONS
Specification questions about the AF120
What does the AF120 do?
Closed-loop air/fuel ratio control.
What outputs does the AF120 provide?
The AF120 provides drives stepper or current-controlled bypass valves.
What ingress protection does the AF120 have?
The AF120 is sealed to IP67.
What fuels does the AF120 work with?
Spark-ignited gaseous-fuel engines. Specific fuel compatibility depends on the engine and package.
What sensor does the AF120 use?
The AF120 uses bosch UEGO lambda sensor, monitoring exhaust oxygen.
How does the AF120 actuate?
Stepper or current-controlled bypass valves.
Where can I find the datasheet for the AF120?
The datasheet is AF120 datasheet and manual. Confirm the current issue. It is linked in the documentation section of this page.
Have an application to discuss?
Speak to our team
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Enquiring about AF120
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- No obligation. Just honest advice on whether Gill is the right fit.