Engine Performance. Test 3 – Online Maritime Tests

Your indicator diagram is as shown. What kind of steps do you think are necessary to rectify the failure?

Check that you have correctly viscosity/fuel preheating.
Check if fuel injection is too early or fuel pump lead too large
Check if fuel injection valve is correctly by adjusted.
Replace the fuel valve.

Which of the following statements is correct

The dispersing additives in lubricating oil, break up the contaminants in even smaller particles and keep them in suspension
A smaller sump volume will mean more dirt will be going into the lubricating oil
Additives in oil assist the separator to remove water
According to Stokes Law, particles does not affect separation

You are onboard a vessel with a 6 cylinder main engine. During emergency running with one cylinder out of operation the engine load must be reduced to:

90 % of MCR
70 % of MCR
Engine can not be run.
50 % of MCR

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

Any of the others.
Charge air temperature is too high.
Water in a cylinder.
Lubricating oil temperature is too high.

Too high exhaust temperature in one cylinder becomes because of

Fuel pump timing changed.
Faulty fuel oil supply.
High wear rate in the injection pump.
High temperature in the turbocharger.

We have a problem with surging in the turbocharger. Which of the following could be the cause?

The lubrication oil pump is malfunctioning
Dirty rotor blades and nozzle ring.
Dirty scavenging air cooler on the air side
Worn out bearings on the turbocharger

Review Answers