DieselShip's Online Content Library

Q1. (a) Explain why an engine may fail to start on air when the start air receiver is fully charged and the air receiver outlet to the engine is open.(10)

b) Describe how problems with air start systems may be avoided. (6)

Q2. With reference to the use of camshaft chain drive systems on diesel engines:

(a) describe the inspection process and the possible defects that may be found; (8)

(b) describe how correct chain tension is maintained, stating the effects of incorrect tension. (8)

Q3. With reference to a load sensing governor for an alternator driven by an auxiliary diesel engine:

(a) Describe, with the aid of a sketch, such a governor; (8)

(b) Describe the action of a governor in response to a large increase in electrical load; (4)

(c) Explain EACH of the following:

(i) The necessity for droop; (2)                  (ii) How droop is effected. (2)

Q4. (a) Explain why crankshaft deflections are taken. (4)

(b) Write a procedure for the taking of main engine crankshaft deflections. (8)

(c) Explain the action to be taken if some crankshaft deflection readings are outside

acceptable limits. (4)

Q5. (a) Sketch a diesel engine high pressure common rail fuel system, labelling the MAIN parts. (8)

(b) Describe how the common rail system sketched in part (a) operates, explaining how fuel injection timing is controlled.

Q6. As Chief Engineer Officer, write instructions for the actions to be taken in the event of a high temperature scavenge alarm being activated, due to a rapid rise in temperature, during a period of UMS operation, stating the reasons for EACH action. (16)

Q6. (a) Write the Chief Engineer Officer's Standing Instructions for the actions to be taken by the watch keeping engineer in the event of failure of the engine room monitoring and alarm system. (8)

(b) State the procedure to be followed in the event of repeated activation of an oil mist fault alarm. (8)

Q8. (a) Write the Chief Engineer Officer's Standing Instructions for the actions to be taken by the watchkeeping engineer in the event of failure of the engine room monitoring and alarm system. (8)

(b) State the procedure to be followed in the event of repeated activation of an oil mist detector alarm. (8)

Q1. With reference to poor ignition quality fuel:

(a) Explain how it can affect combustion in BOTH slow speed and medium speed diesel engines; (8) (b) Explain how the effects on BOTH diesel engine types in part (a) can be reduced. (8)

Q9. A slow speed diesel engine crankcase lubricating oil analysis report indicates a substantial presence of fresh water, metal particles and a reduction of BOTH alkalinity and antioxidant reserve. Explain the possible causes of EACH of these changes, and how they may be found. (16)