Engine Performance. Test 4 – Online Maritime Tests

During a ballast voyage, the fuel consumption is noticeable higher than normal and all pressures and temperatures is normal, may the reason to this be:

Fouling of the hull
Water in the fuel.
Long time since the last overhaul.
Opposing sea current

Spray painting has been carried out in the engine room while the engine was running, and the turbocharger was not protected. This could be the cause of one of the following:

Exhaust gas temperatures are higher than normal
Scavenging air pressure is higher than normal
The revolution of the turbocharger lower than normal.
The revolutions on the turbocharger are higher than normal

The exhaust gas temperature is too high in all cylinders because of:

Charge air pressure is too low.
Any of the others.
Air in the fuel system.
Injection too early in some of the cylinders.

The revolutions on the turbocharger have increased during the night with unmanned engine. Could this be caused by:

The current and wind are holding the vessel back
Poor combustion due to malfunction of fuel valves.
The viscosity of the fuel is to high
We have favorable winds and current

What do you understand by the term 'Maximum Rating' of an engine?

The piston speed and revolutions per minute cannot safely be increased.
The maximum possible percentage of oil being burned effectively in the cylinder volume available.
All of the mentioned alternatives
The stresses in the component parts of the engine generally, for the mechanical and thermal conditions prevailing, have attained the highest safe level for continuous working.

Review Answers