
What is AutoTune?
AutoTune DLE consists of a stand-alone smart solution box that connects to the control system of an LM gas turbine. It is an automated engine efficiency optimizer for LM2500 & LM6000 DLE in part load operation.
AutoTune DLE provides real-time empirical combustion-based engine efficiency optimization.
Specifications
- A 19” stand-alone box (Containing the 2nd generation AutoTune platform including a combustion dynamics measuring system and digital processing capabilities)
- Hardwired connections with the controls cabinet and the vibration panel
- Modbus connection between the controls cabinet and the AutoTune DLE box
- Back-up / fall back in the controls logic programming
Requirement
A continuous emission monitoring system (CEMS) to provide real-time emission data to the AutoTune DLE box.
What does AutoTune do?
AutoTune DLE automatically optimizes gas turbine combustion by continuously and carefully balancing: Ambient Conditions, Fuel gas, Bleed air, Combustion Dynamics, and Emissions in a closed loop; to achieve optimum combustion efficiency during the part load operation.

Image: AutoTune-DLE flowchart

Table: Customer example of efficiency improvement on a LM2500 DLE

AutoTune DLE – Realizing higher efficiency in part load operation
- Stretches the AB window when staging up from AB to ABC mode (run longer with 0% bleed in AB mode).
- For staging down from ABC to AB mode avoids high-bleed operation in ABC.
- In ABC mode reduces compressor bleed as much as possible.

What does AutoTune mean for LM operators?
- Improving engine efficiency
- Reducing fuel gas costs
- Controlling NOx and CO emissions
- Reducing CO2 emissions
- Enabling the use of renewable fuels
- Enabling combustor mode ABC at lower loads
- Avoiding high combustor acoustics
- Eliminating seasonal DLE mapping



Table: Customer example of fuel gas saving & CO2 avoidance savings on a LM2500 DLE
Calculate your Fuel Savings
Curious to know how much fuel you can save with AutoTune DLE?
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