Revotron 1.2T 17 9. Turbocharger Sr. No Turbocharger Failure Mode Potential Effect of Failure - Engine Level 1 Incorrect boost pressure • Loss of Power • Engine Hunting • High NVH for Engine 2 Air leakage • Loss of Power • Incomplete combustion 3 Exhaust gas leakage @ Turbocharger • Emissions regulation not met • Loss of Power and torque • Increased engine Bay temperature 4 Air contamination • Cyl Scoring leading to Oil Pullover into the Combustion chamber and then Oil Burning - Physical dry particle • Hydrostatic lock in case of water ingress • Engine Seizure 5 Inadequate back pressure for turbo • Lean Combustion leading to Loss of power • Engine Hunting • High NVH for Engine 6 Turbocharger noise • Increased engine assy noise • Veh Pass by regulation not met 7 Oil leakage: center housing to compressor housing • Oil loss • Lub oil Consumption high • Increased blow by • Engine Seizure 8 Oil leakage: Center Housing to turbine housing • Oil loss • Lub oil Consumption high • Increased blow by • Engine Seizure 9 Oil leakage: external connection to center housing not ensured • Oil loss • Lub oil Consumption high • Increased blow by • Engine Seizure 10 Oil contamination • Cyl Scoring leading to Oil Pullover into the Combustion chamber and then Oil Burning - Physical dry particle • Hydrostatic lock in case of oil and coolant mixing in TC • Engine Seizure 11 Coolant Leakage • Coolant loss • Engine Overheating • Engine Seizure 12 Fail to receive and send signals • Loss of Power • Engine Hunting • High NVH for Engine 13 Service components do not meet service time target / difficult to service • Increased downtime during service • Customer annoyance • Increased labour charges
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