- The internal passages in the crankshaft are made in such a manner, in case of small diesel engines where crankshaft size is comparatively small, that oil is supplied to the main bearing. From there to the passage in the crankshaft it is feed to the crank pin bearing. Thus avoiding the complicated piping to supply oil to the crankpin bearing and gudgeon pin bearing.
- This is applicable only in case of small crankshafts. Bigger crankshafts may fail under fatigue if the holes are drilled out for the passage of the oil. Hence in case of the bigger crankshafts, no drilling of the holes is done on the crankshaft and hence this method of lubricating the bottom end bearing and gudgeon pin bearing is not applicable.
- In that case, there is a separate supply of lubricating oil to main bearing and as well as to the crosshead bearing, which will be further bifurcated into two: the crosshead bearing and piston cooling, and the bottom end bearing, for lubricating.
The electrohydraulic control mechanisms of the ME engine replace the following components of the conventional MC engine: Chain drive for camshaft Camshaft with fuel cams, exhaust cams and indicator cams Fuel pump actuating gear, including roller guides and reversing mechanism Conventional fuel pressure booster and VIT system Exhaust valve actuating gear and roller guides Engine driven starting air distributor Electronic governor with actuator Regulating shaft Engine side control console Mechanical cylinder lubricators. The Engine Control System of the ME engine comprises: Control units Hydraulic power supply unit Hydraulic cylinder units, including: Electronically controlled fuel injection, and Electronically controlled exhaust valve activation Electronically controlled starting air valves Electronically controlled auxiliary blowers Integrated electronic governor functions Tacho system Electronically controlled Alpha lubricators
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