DieselShip's Online Content Library

Q1. Describe the procedure in lining up an engine bedplate, main bearings, gear box, thrust block, propeller shafting and tail-end shaft, assuming this to be a new ship.

Q2. Sketch and describe a fuel injector for a diesel engine; State four parameter that indicate fuel injectors require immediate overhaul.

Q3. It has been found necessary to completely replenish all of the oil in the lubricating system of a large motor ship. (Or steam turbine ship). As chief engineer write a detailed report to the Superintendent Engineer justifying this heavy expenditure, the expediencies required to prevent further trouble during the voyage, and suggestions for permanent measures to avoid recurrence of the initial problem.

Q3. A. Compare the advantages of forged and built-up crankshafts with special reference to the magnitude of the stresses in the cranks; B. How would you check the deflections by means of a dial gauge through one revolution of the shaft? C. How are the readings obtained interpreted?  D. How wear is down measured?

Q5. Why are fuel pump near injectors? If lines are unequal, how do you balance?

Q2. A. How is the cylinder lubricators fitted in a large marine diesel engine that has a water jacket? B. Where is the location of the lubricator outlet in relation to the piston rings on the piston? C. Why is this position necessary?

Q5. A. What limits the power in a cylinder of a given size? B. State the results if an attempt to raise the power by injecting more fuel into the cylinder is made

Q8. Sketch and describe a reversing system suitable for a set of H.F.O Engines (slow speed)

Q6. A. Sketch and describe a flywheel that would be fitted to a large marine diesel engine; B. Show in the sketches how it is fitted and secured; C. What is the purpose of the flywheel? Recently some engine makers have considerably reduced the size of the flywheel. Explain how this can be done.