Category: EK Motor

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With reference to diesel engine SOx exhaust gas cleaning and pollution control: (a) state, with reasons, which system parameters are monitored, explaining where the monitoring devices are located, how the data is stored and how data is made available to regulatory authorities; (10) (b) state how pollution of sea water can be caused by the…

EK Motor Dec 2024 (Q8)

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(a) With reference to an engine cylinder liner explain the term “Thermal Stress”, indicating how and why it occurs during operation of an engine. (4) (b) Explain how the upper part of a cylinder liner is subjected to fatigue during engine operation. (4) (c) Explain how thermal stress and fatigue combine and can lead to…

EK Motor Dec 2024 (Q7)

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(a) Write a procedure for the action a duty engineer should take on being called to the engine room during a UMS period in the event of an engine slowdown due to a high cylinder exhaust temperature on the main propulsion engine. (6) (b) State, with reasons, the possible causes of a high exhaust temperature…

EK Motor Dec 2024 (Q6)

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(a) Explain how diesel engine cylinder performance is checked. (4) (b) Sketch an indicator diagram showing good cylinder combustion and on the same indicator diagram show combustion defects due to EACH of the following: (i) Early fuel injection; (2) (ii) Late fuel injection; (2) (iii) Poor fuel atomisation. (2) (c) Explain how the cylinder combustion…

EK Motor Dec 2024 (Q5)

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(a) Explain how the build up of residue in the scavenge space of a large slow speed two stroke engine is minimised by design, operation and maintenance. (10) (b) Explain the possible damage which could be caused by a scavenge fire. (6) Dec 2024 (Q5)

EK Motor Dec 2024 (Q4)

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(a) State, with reasons, the properties required of a lubricating oil for a trunk piston type, medium speed engine, indicating why some properties differ from those required of a lubricating oil used in the crankcase of a crosshead diesel engine. (6) (b) Describe, with the aid of a sketch, the lubrication system of a trunk…

EK Motor Dec 2024 (Q3)

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(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 starting systems may be avoided. (6) Dec 2024 (Q3)

EK Motor Dec 2024 (Q2)

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As Chief Engineer Officer, write a report to the engineering superintendent regarding failure of a four-stroke main engine, to complete a slow turning procedure and the discovery of water around a cylinder head gasket after the failed slow turning attempt. The report must outline possible causes of the problem and the steps taken to identify…

EK Motor Dec 2024 (Q1)

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