Category: EK Motor

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(a) Explain how the information gathered from a diesel engine cylinder is analyzed (4) (b) Explain how defects which result in poor cylinder performance are recognised from data gathered during the determination of cylinder power, stating how these defects influence cylinder power development (6) (c) Explain how defects resulting poor cylinder performance which are mentioned…

EK Motor Aug 2020 (Q1)

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With reference to larger, slow speed, crosshead type engine: (a) Explain the nature of the forces acting on the transverse girders (6) (b) Explain the nature and location of defects that can occur in transverse girders (6) (c) Explain the possible consequences of operating the engine with serious defects present in the transverse girders (4)…

EK Motor Jul 2020 (Q9)

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With reference to turbocharger systems: (a) Describe how performance of the system is monitored and how the information gathered is used to assess performance; (8) (b) Describe the arrangements for maintaining the systems in good condition. (8) Scavenging & Turbocharger Jul 2020 (Q9)

EK Motor Jul 2020 (Q8)

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With reference to two stroke, slow speed engine pistons: (a) Explain what is meant by the term thermal stress and how this can cause cracking of crown surface (4) (b) Sketch a cross-section of a piston, labeling the main components and indicating coolant flow (8) (c) State a cause of EACH of the following defects…

EK Motor Jul 2020 (Q7)

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As Chief Engineer, write instructions for the checking of the engine slow turning system and subsequent routine monitoring of the engine slow turning system. The instruction must take account of problem areas which may be linked to the need for slow turning of an engine whilst selected for standby and prior to an actual start.…

EK Motor Jul 2020 (Q6)

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With reference to abnormal and excessive cylinder liner wear: (a) Explain how it may be caused, stating how it is detected; (6) (b) Explain the effects and consequences of excessive cylinder liner wear; (5) (c) Explain how abnormal cylinder liner wear may be prevented. (5) Cylinder liner Jul 2020 (Q6)

EK Motor Jul 2020 (Q5)

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(a) Explain, with the aid of sketches, the gas combustion process in a dual fuel medium speed main engine, operating with pilot injection. (10) (b) Explain what is meant by exhaust gas recirculation and how this may be effective in reducing air pollution. (6) Dual fuel Jul 2020 (Q5)

EK Motor Jul 2020 (Q4)

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As Chief Engineer, write a report for the engineering superintendent regarding the checking of a bottom end bearing on a crosshead type main diesel engine, after a high temperature alarm was activated at sea, and the subsequent return to full service of the engine. (16) Bearings Jul 2020 (Q4)

EK Motor Jul 2020 (Q3)

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(a) Describe, with the aid of a sketch, a Selective Catalytic NOx Reduction system, explaining the chemical reaction for reducing NOx and the control system requirements. (10) (b) State two engine based systems for reducing marine diesel engine NOx, explaining how they reduce NOx level but also increase fuel consumption and CO2 emissions. (6) Emission…

EK Motor Jul 2020 (Q2)

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