Operation Of Turbocharged Diesel Engines

- Nov 11, 2017-

After a diesel engine has started, it should run at low speed for a period of time before speeding up. Otherwise, it is easy to burn out the bearing on turbocharger. Especially for an engine in which the lubricating oil has been changed, the turbocharger and filter cleaned or the filter element replaced, or which has stopped for more than one week. After starting the engine, loosen the oil inlet joint on oil filter of turbocharger (or oil inlet joint of turbocharger) for a little, tight the joint after lubricating oil flow out. Let the engine rotate at an idling mode for several minutes before load are added.

For a new engine or an engine with a newly replaced turbocharger, remember to dismantle the oil inlet connector of the turbocharger and then add 50-60ml lubricating oil into the oil inlet to prevent the bearings of turbocharger from being burned out due to shortage of oil during engine starting.

The diesel engine should not run at idling speed or the load is lower than half of its rated power for a long time, otherwise it can easily make the oil in turbocharger leak into compressor housing and lead to oil spout out of exhaust pipe.

Run the diesel engine at idling speed for 2~3 minutes before stopping. The engine should not be stopped suddenly unless it is really urgent, otherwise the turbocharger will get overheated which will cause its bearings to seize up.

Listen to see whether there is sound of collision between impeller and housing of turbocharger at the moment of stopping. If so, disassemble the turbocharger to inspect the bearing clearance.

The intake and exhaust manifold of turbocharged diesel engine must be kept sealing, or it will affect the performance of the engine. Check the tightness of the connecting nuts or bolts, bust of rubber hose and sealing washer for air leakage regularly.

The load power for turbocharged diesel engine should be reasonable when matching with working machinery. It is strictly forbidden that the load power is too high or too low for turbocharged diesel engine. If the diesel engine is running under over load condition for a long time, it will cause failures and lower the reliability of diesel engine. However, if the load power is too low, the diesel engine can not make full use of its power ability and may easily cause flee oil.