Category: EK Motor

—

by

With reference to diesel engine crankshafts: (a) Explain the causes and effects of torsional vibration; (4) (b) Explain the term critical speed, stating why the engine should not be continuously operated at this speed; (6) (c) Explain the term fatigue cracking, stating, with reasons, TWO factors which have an influence on the likelihood of fatigue…

EK Motor Dec 2019 (Q9)

—

by

(a) Describe, with the aid of a sketch, the lubrication system of a crosshead type diesel engine (8) (b) 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…

EK Motor Dec 2019 (Q8)

—

by

(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 reason, the possible cause of a high exhaust temperature…

EK Motor Dec 2019 (Q7)

—

by

With reference to cylinder liner scuffing: (a) Explain how it is caused, stating the method of detection (6) (b) Explain the effects of cylinder liner scuffing (4) (c) Explain how minor scuffing may be treated in order to avoid the need for liner replacement (6) Cylinder liner Dec 2019 (Q7)

EK Motor Dec 2019 (Q6)

—

by

(a) As Chief engineer, explain how the performance of a main diesel engine may be determined, indicating how the information collected is analyzed to assess the performance of an individual cylinder in relation to the overall engine performance (6) (b) Explain how defective fuel injection may be detected stating, with reasons, the causes of defective…

EK Motor Dec 2019 (Q5)

—

by

Write a report for the engineering superintendent regarding the replacement at sea of bearings on one of the main engine turbochargers, the report must explain how the bearing defects were detected, the likely cause of the damage and the action which has been implemented to prevent further incidents of this type (16) Scavenging & Turbocharger…

EK Motor Dec 2019 (Q4)

—

by

With reference to a closed loop engine exhaust gas SOx scrubber system: (a) Describe, with the aid of a sketch, such a system. (8) (b) State, with reason, the fluid which is used for SOx scrubbing in this system (4) (c) State how the effectiveness of the scrubbing fluid is maintained and how the sludge…

EK Motor Dec 2019 (Q3)

—

by

(a) Describe, with the aid of a sketch, the arrangement of the gas and liquid fuel systems at the cylinder of a dual fuel 4-stroke engine, stating the input and output signals at the controller (12) (b) Describe the arrangement of the gas fuel piping system used for a 4-stroke dual fuel engine , stating…

EK Motor Dec 2019 (Q2)

—

by

(a) Sketch a main engine fuel system from the HFO and Low Sulphur service tanks to the main engine, showing all important valves (6) (b) Using the sketch drawn in part (a), write instructions for the changeover of a main engine fuel system from HFO to Low Sulphur fuel, indicating the timescale for each operation…

EK Motor Dec 2019 (Q1)

—

by