❓ What is Surge?
Surge is an unstable operating condition where system pressure drops sharply.
Simply put, it’s a pulsation that occurs when the pressure in the charge air cooler is higher than the outlet pressure from the turbine. In this case, surge happens, accompanied by a distinctive sound.

⚠️ Why is it dangerous?
Frequent surge can damage turbine bearings and vanes.

🔍 What are the most common causes of surge?

1. Heavy weather – during a storm, the engine operates with rapid load changes.
2. Clogged nozzle ring of the turbine.
3. Cylinder shutdown or problems with the fuel system.
4. Improper assembly of the turbine.

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