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Gas Engine Control Systems

Gas Engine Air Fuel Ratio (AFR) Applications

Woodward air-fuel ratio control solutions combine electronic control systems with valve, actuation, and gas mass flow metering technology into a highly-integrated solution for industrial gas engines. The control solutions are used on many modern gas engine applications in the gas compression and power generation market.

Caterpillar G3512LE

Caterpillar G3512LE

Woodward E3 Lean Burn Trim AFR

Power Generation for Water Treatment Plant

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Caterpillar G3512LE Woodward E3 Lean Burn Trim System with Speed Control

Caterpillar G3512LE

Fuel: Natural Gas
Combustion: Lean Burn
Fuel System: Low Pressure, Impco Carbureted

Problem

Need to meet local emissions regulations
Caterpillar only guarantees emissions with "Customer Supplied Air Fuel Ratio Control" on new engines.

Solution

  • Woodward E3 Lean Burn Trim System with Speed Control
  • GCS designed control cabinet
  • Dual F-Series ITBs controlled in tandem

Added Benefits

GCS replaced the factory speed control with Woodward ProAct actuator and standard "OEM style" mounting kit

Results

Tested to 0-100% & 100 - 0% load steps with load bank.
Customer impressed with results and best gas engine performance they had experienced.


Caterpillar G3516LE

Caterpillar G3516LE

Woodward E3 Lean Burn Trim AFR

Power Generation for Landfill Facility

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Caterpillar G3512LE Caterpillar G3512LE

Caterpillar G3512LE

Fuel: Landfill Gas
Combustion: Lean Burn
Fuel System: Low Pressure, Impco Carbureted

Problem

Need to meet local emissions regulations
Inconsistent starting on low BTU fuel

Solution

  • Woodward E3 Lean Burn Trim System with Speed Control
  • Dual F-Series ITBs controlled in tandem

Added Benefits

GCS replaced the factory speed control with Woodward ProAct actuator and standard "OEM style" mounting kit.

Results

Consistent starting on landfill gas
Removed operator intervention with manual hand valve on fuel inlet


Caterpillar G3412LE

Caterpillar G3412LE

Woodward E3 Lean Burn Trim AFR

Power Generation for Gas Compression Site

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Caterpillar G3412LE Caterpillar G3412LE

Caterpillar G3412LE

Fuel: Natural Gas
Combustion: Lean Burn
Fuel System: Low Pressure, Impco Carbureted

Problem

Need to meet local emissions regulations
Caterpillar only guarantees emissions with "Customer Supplied Air Fuel Ratio Control" on new engines.

Solution

  • Woodward E3 Lean Burn Trim System with Speed Control
  • L-Series ITB for fuel control

Added Benefits

Replaced the factory speed control with Woodward ProAct ITB and custom mounting arrangement.

Results

Consistent and reliable emissions reduction to meet EPA requirements.


Caterpillar G3412LE

Caterpillar G3412LE

Woodward E3 Lean Burn Trim AFR

Power Generation for Municipal Water Facility

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Caterpillar G3412LE Caterpillar G3412LE

Caterpillar G3412LE

Fuel: Propane
Combustion: Lean Burn
Fuel System: Low Pressure, Impco Carbureted

Problem

Need to meet local emissions regulations
Caterpillar only guarantees emissions with "Customer Supplied Air Fuel Ratio Control" on new engines.

Solution

  • Woodward E3 Lean Burn Trim System with Speed Control
  • L-Series ITB for fuel control

Added Benefits

Replaced the factory speed control with ProAct ITB and custom mounting arrangement.

Results

Were able to achieve consistent and reliable emissions reduction.


Caterpillar G3512

Caterpillar G3512

Woodward E3 Rich Burn Trim AFR

Power Compression Skid

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Caterpillar G3512 Caterpillar G3512

Caterpillar G3512

Fuel: Natural Gas
Combustion: Rich Burn
Fuel System: High Pressure, Impco Carbureted

Problem

Need to meet local emissions regulations
Existing engine was being rebuilt and needed a new control system.

Solution

  • Woodward E3 Rich Burn Trim System with Speed Control
  • GCS designed control cabinet
  • F-Series ITB for fuel control
  • DCL 3-way catalytic converter

Added Benefits

GCS installed the standard "OEM style" mounting kit with Woodward ProAct actuator.

Results

Meeting emissions requirements
Excellent engine performance


Caterpillar G3512

Caterpillar 3500 A Series

OEM Actuation and Linkage
Woodward Replacement Kit

GCS designed an actuation package utilizing the
Woodward ProAct ISC actuator to address linkage problems
between the OEM actuator and throttle body on
older Caterpillar G3500A Series engines.

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Improved Actuation on Caterpillar 3500 engines

  • Linkage before

  • Linkage after