Points To Be Noted While Engine Is Running At Low Loads

For extended running at low Engine loads, an engineer must make sure of the following points 

>Low load operation may result in cut-in of Auxiliary blower. A fluctuation in load at this range will lead to an on and off condition for blower. Hence the mode of Auxiliary blowers to be changed to Manual
>Exhaust gas temperature must be maintained above 250 degree Celsius to avoid fouling of exhaust passage, turbocharger nozzle and 'cold corrosion' of engine parts, as there is a possibility of the Liner wall temperature falling below the Dew point, which is influenced by the Pressure in the Combustion chambers.

>Unless the Engine is equipped with 'Load-controlled' cooling, try not to run engine on very low loads, with exhaust Temperatures running less than 250 Degrees C.

>Make sure to check Auxiliary blower motor temperature frequently for sign of overheating

>The Viscosity and temperature of fuel oil to be maintained for proper atomization of fuel

>Trace heating fuel line to be checked to be operational and all injectors to be in good condition and monitored properly for firing

>Scavenge Air Temperature to be Maintained between 42-50 degree C, for good combustion

>Jacket cooling water to be maintained at upper limit to avoid thermal stress inside the engine

>Cylinder oil feed rate to be monitored at low load operation

>Check under piston area for sign of over cylinder lubrication

>Try to run the engine at 80% MCR for at least one hour a day to burn off the carbon deposits

>Check and clean the Economiser tubes frequently, especially if the tubes are of the 'closed fins' type

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