Category: EK Motor

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(a) Explain, with the aid of a sketch, Thermal stress, stating how thermal stresses induced in the cylinder liner when the engine is operating (8) (b) Explain why thermal stress may be damaging to an engine cylinder (4) (c) Explain how thermal stress may be avoided in an operating engine without reducing engine power output…

EK Motor Jul 2021 (Q5)

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With reference to diesel engine hybrid Sox scrubber system: State the fluids used in the open and closed loop of the scrubber, explaining how these fluids are controlled to meet the scrubbing demand at different engine loads (6) State the circumstance under which open loop scrubbing would be used. (2) Describe how the effective Sox…

EK Motor Jul 2021 (Q4)

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Wrote a report to the engineering superintendent regarding the failure of a main crosshead engine fuel pump cam follower where the damage was so severe that the normal pump lifting equipment could not be immediately fitted. The report must explain how the action taken, the rectifying action taken to ensure that the engine could be…

EK Motor Jul 2021 (Q3)

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Describe, with the aid of a sketch, the exhaust gas and charges air flow system through an engine cylinder and turbocharger of a two stroke engine, indicating the cooling and water separation system (6) Describe how a water separator removes water droplets from a charge air flow. (4) Explain the possible consequences of not removing…

EK Motor Jul 2021 (Q2)

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Describe, with the aid of a sketch, the lubrication system of a crosshead type diesel engine (8) Explain the properties required by the lubricating oil in each of the systems described in part (a), stating how these properties compare with those of a lubricating oil used in the crankcase of a trunk piston type diesel…

EK Motor Jul 2021 (Q1)

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(a) Explain why an engine may fail to start no air when the start air receiver is fully charged and the air receiver outlet to the engine is open (10) (b) Describe how problem with air starting system may be avoided (6) Jul 2021 (Q1)

EK Motor Mar 2021 (Q9)

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(a) Explain why optimum fuel atomisation is required in a marine diesel engine cylinder and how this is achieved (6) (b) Explain how optimum fuel droplet size is produced by a fuel injector (6) (c) Explain how fuel injector nozzle are maintained in good condition (4) Fuel oil & system Mar 2021 (Q9)

EK Motor Mar 2021 (Q8)

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As Chief Engineer Officer, write a report to the engineering superintendent regarding the failure of a main engine cylinder liner due to cracking which resulted in water leakage from the cooling space into the cylinder. The report must explain how the defect was detected, the immediate action taken, the rectifying action taken to ensure that…

EK Motor Mar 2021 (Q7)

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(a) Explain why top bracing is used for large crosshead engines (4) (b) Describe, with the aid of a 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…

EK Motor Mar 2021 (Q6)

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