Category: EK Motor

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With reference to waste heat steam generation systems: (a) Describe, with the aid of a sketch, the economizer circulation system (5) (b) Explain how the economizer circulation pumps are kept cool (3) (c) Describe how the boiler water is maintained in a condition which minimizes scale formation and system corrosion (8) WHRS & Boiler Mar…

EK Motor Mar 2022 (Q8)

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With reference to LNG diesel engine installations: (a) Describe, with the aid of a sketch, a Gas Valve Unit, explaining its purpose and indicating where it is located in the gas train (8) (b) Explain why ventilation and inert gas system must be installed with the engine fuel gas system (4) (c) state why pilot…

EK Motor Mar 2022 (Q7)

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(a) State, with reasons, THREE properties required of a cylinder lubricant for a main engine operating on HFO (6) (b) Describe, with the aid of sketches, an electronically controlled cylinder lubricating system, stating how the timing and quantity of cylinder lubricant is regulated and set. (10) Lubricating oil & system Mar 2022 (Q7)

EK Motor Mar 2022 (Q6)

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With reference to engine fuel injector nozzle cooling: (a) Explain why fuel injector nozzle cooling is necessary (4) (b) Describe, with the aid of a sketch, the operation of a nozzle cooling system for a generator engine (8) (c) Explain how fuel injector nozzles are cooled on engine which are not fitted with a separate…

EK Motor Mar 2022 (Q5)

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With reference to an engine air starting system. (a) Explain why a slow turning system is fitted (4) (b) State, with reasons, when a slow turning system operates (2) (c) Describe with the aid of a sketch, an air starting system, explaining how the slow turning system operates (10) Starting & control Mar 2022 (Q5)

EK Motor Mar 2022 (Q4)

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(a) State, with reason, SIX points which should be covered in a risk assessment for the replacement of a crosshead main engine fuel injection pump in port (6) (b) Write instruction for the replacement of a crosshead main engine fuel injection pump (10) Fuel pump & injectors Mar 2022 (Q4)

EK Motor Mar 2022 (Q3)

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(a) Describe with the aid of a sketch, an external system for reducing engine NOx emissions, explaining the chemistry of the process (8) (b) Explain why urea is used in the Selective Catalytic reduction process instead of ammonia (4) (c) Explain why the exhaust gas quality must be monitored before and after the Selective Catalytic…

EK Motor Mar 2022 (Q2)

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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 Mar 2022 (Q1)

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