What are the Causes of Turbocharger Surging?

• It can be happened due to sudden change in the engine load or speed.
• Imbalance in cylinder power or faulty injectors
• Un-cleaned turbine nozzle ring. if the turbine side is dirty i. e nozzle, blades etc enough air can not be produced for combustion.
• Dirty filter: if the inlet filters are dirty then enough air can not be supplied for combustion, which leads to surging
• The capacity of turbocharger is larger than required.
• Increased back-pressure at the turbine side.
• Improper power distribution between the engine cylinders may cause turbocharger surging as one unit is producing more power and other is producing less. Due to this the air consumption differs, which leads to surging.
• Highly fouled exhaust i.e. economizer, if fitted may cause back pressure in the turbocharger and thus finally lead to surging.
• Bad weather – This is one more reason for surging. Due to bad weather sudden load change takes place thus surging.
• Damaged blades.