Category: EK Motor

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Write a report to the superintendent engineer concerning an incident of cracking which was discovered in one piston of a main diesel engine and the subsequent discovery of cracking in another piston of the same engine. The report must include information about the immediate action taken to prevent further damage to the engine, the subsequent…

EK Motor Dec 2018 (Q5)

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With reference to electronically controlled engines: (a) Describe how fuel injection quantity and timing is adjusted (6) (b) Describe how the exhaust valve timing may be varied (5) (c) Describe how starting air valves are regulated (5) Dec 2018 (Q5)

EK Motor Dec 2018 (Q4)

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With reference to diesel hybrid SOx scrubber systems: (a) State the fluids used in the open and closed loops of the scrubber, explaining how these fluids are controlled to meet the scrubbing demands at different engine loads (6) (b) State the circumstances under which open loop scrubbing would be used and closed loop scrubbing would…

EK Motor Dec 2018 (Q3)

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(a) Explain why crankshaft deflections are taken (4) (b) Write a procedure for taking main engine crankshaft deflections (8) (c) Explain the action to be taken if some crankshaft deflection readings are outside acceptable limits (4) Dec 2018 (Q3)

EK Motor Dec 2018 (Q2)

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With reference to main engine crankcase explosions: (a) Explain the sequence of events leading to a secondary crankcase explosion (6) (b) As Chief Engineer Officer, explain how an engine should be managed in order to minimise the risk of a crankcase explosion and the effects of a crankcase explosion should one occur. (10) Dec 2018…

EK Motor Dec 2018 (Q1)

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With reference to poor ignition quality fuel: (a) Explain how it can affect combustion in BOTH slow speed and medium speed diesel engine (8) (b) Explain how the effects on BOTH diesel engine types in part (a) can be reduced. (8) Dec 2018 (Q1)

EK Motor Oct 2018 (Q9)

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With reference to an economiser: (a) Write a procedure for the cleaning of the gas side of an economiser when the associated main engine is: (i) Running (5) (ii) Stopped (5) (b) Write a procedure for operation of the main engine when the associated economiser cannot be operated due to tube failure (6) Oct 2018…

EK Motor Oct 2018 (Q8)

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(a) Explain why top bracing is used for large crosshead engines (4) (b) Describe, with the aid of sketch, a hydraulic top bracing unit for a large crosshead engine indicating where the top bracing is fitted and how it operates (6) (c) Write instructions for the checking of a large crosshead engine hydraulic top bracing…

EK Motor Oct 2018 (Q7)

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(a) Explain why cylinder power balance is essential to good engine operation, indicating the possible damaging effects of cylinder power imbalance (6) (b) Describe the procedure for checking the performance and power of an engine cylinder (4) (c) Explain how cylinder power may be balanced across an engine (6) Oct 2018 (Q7)

EK Motor Oct 2018 (Q6)

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