In the 21st century there is a constant requirement for power and ships no exception, warranting serious consequences which may arise; including different injuries to crew, damage to vessel and even collision, rare but possible. Firstly, marine engineers should be more aware and more knowledgeable about the auxiliary engine in terms of performance alongside permanent monitoring, meaning that some things require more attention which will be described above.
The first aspect to monitor is the power imbalance within the auxiliary engine where taking performance readings of the engine is the start. However, the potential issue is within the combustion chamber; recognised by high peak pressure variations in any units; compared against average ratings taken from a previous cycle. Along with that, since engines also require electrical power, bringing generators into the equation when they are not taking the rated load; present when temperature of the engine is out of the limit.
Leading to the operations itself, engines produce residue which, in quantity may degrade the engine and drop performance. One of the few examples is the white metal particles in the engine filters, indicating main wear-down of bearings; instant overhaul is required. Another aspect is what lubricates or runs your engine; oils and lubricants. This matter goes beyond the machinery itself as the quality of lubricants determines effective operations of your machinery and your vessel. Other matters concerning lubricants include temperature and pressure differences where the former has to be less than 60 degrees C or the fuel viscocity drops; affecting fuel pressure.
Finally, if there is high difference firing pressure in between individual cylinders, it will lead to reduction in overall output of the engine. Finally, over-speeding of the auxiliary engine generator is an issue where uncontrolled acceleration of auxiliary engine generation; common during startup or faults in fuel pumps causing them to get stuck.