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Reduction of Scavenge Pressure after Turbocharger Overhaul
The reduction in the turbocharger performance and hence reduced engine output after turbocharger overhaul is a clear evidence of improper…
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Advanced 3 min read
Fatigue Failure on Ships
Fatigue is the failure of a component under fluctuating stress, and as such all components which are exposed to alternating stress…
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Marine Engineering Study Materials
Causes of Exhaust Valve Failures Exhaust valve is prone to § Vanadium induced metal loss at the base of the valve…
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Fuel Injector Needle Valve Seizure
When the fuel injector needle valve seizes, this can be when the needle is 1. Shut – causing nil or a…
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Fuel Oil Sampling During Bunkering
On-board testing of the fuel could be carried out during the bunker operation by one of the engineering staff not required…
Advanced 4 min read
Checking Fuel Pump Timing and Quantity on Ships
Checking Fuel Pump Timing The primary method of checking fuel pump timing would be using the manufacturer’s instructions of setting the…
Advanced 3 min read
Crankcase Oil for Trunk Piston Engine
Properties required of a crankcase oil which is to be used for a trunk piston main engine are the following: Detergency…
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Reduction Gearbox on Medium Speed Engines on Ships
The sketch below shows a simple, single reduction gearbox suitable for speed reductions from 750 to 150 rev/min reduction (i.e. 5:1…
Advanced 2 min read
Ignition Delay of Fuel – Marine Engineering
Ignition delay is the time between fuel injection and fuel ignition. During this time the fuel get mixed with hot…
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Investigation on Top End Bearing Failure for Main Engine on Ships
The following information would be useful in assessing the possible causes of the failure: · History of all work carried out on…
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Fuel Injection Arrangement on Large Two Stroke Engines
The fuel injection arrangement shown below is for a large two stroke marine diesel engine used on ships. High pressure…
