What is the reason for the redness of the Cummins generator set supercharger?

Ningbo users have a 500KW Cummins diesel generator set, the engine model is KTAA19-GA, the generator is Stanford brush-free electric motor, the deep sea LCD control module, the configuration is high, the user discovers the unit supercharger case It seems to melt. Users advanbit us for the cause of engineers of generator manufacturers, and the following cycosity engineers have done the following reply based on the failure situation reflected by the user.
The reasons why the anti-red fault analysis of the supercharger in the use of 500kw Cummins diesel generator sets:
The turbine shell material of the turbocharger of the Cummins diesel generator set is cast iron. The turbine shell does not occur at all turbine shells at the normal exhaust temperature of the diesel generator set. It is determined that the Cummins diesel exhaust gas is too high and the exhaust gas is too high. The reasons are:
1: Cummins diesel engine exhaust door is not strict;
2: The oil supply is too late;
3: Cummins diesel generator set overload operation.

According to the work situation, it is found that the diesel generator is not operating under overload conditions, and the valve clearance is detected in the specified range. After ZUI, it is found that the diesel oil supply advance angle is too late, and after re-adjusting the oil supply advance angle, the failure phenomenon disappears. This is also the cause of the turbocharger.