Category: EK Motor

—

by

(a) Describe, with the aid of a sketch, a system for burning gaseous fuel in a two-stroke diesel engine, indicating safety features fitted and explaining why the gas has to be injected into the cylinder rather than mixed with the combustion air outside of the cylinders. (12) (b) Define the term Methane Slip, explaining how…

EK Motor Oct 2019 (Q8)

—

by

With reference to boilers and steam generation systems: (a) explain the term water hammer, stating how it is caused and describing the possible consequences of it; (4) (b) explain how water hammer can be avoided; (4) (c) describe, with the aid of a sketch, how the boiler fuel system may be operated in port to…

EK Motor Oct 2019 (Q7)

—

by

(a) Describe how crosshead bearing and guide clearances can be checked (6) (b) Describe, with the aid of a sketch, the procedure for checking the condition of a crosshead engine bottom end bearing surface (10). Bearings Oct 2019 (Q7)

EK Motor Oct 2019 (Q6)

—

by

Write instructions for the actions to be taken by a duty engineer following activation of a slow speed main engine exhaust gas differential temperature alarm during a period of unmanned machinery operation. The instructions must cover the period from activation of the alarm to return of the main engine to normal operation. (16) Engine protection…

EK Motor Oct 2019 (Q5)

—

by

With reference to medium speed diesel engine cylinder liners: (a) Explain the cause and effects of liner polishing or glazing; (6) (b) Explain the action of an anti-polishing ring during the operation of the engine; (5) (c) Describe how effective cylinder lubrication is achieved. (5) Cylinder liner Oct 2019 (Q6)

EK Motor Oct 2019 (Q4)

—

by

Write a report for the engineering superintendent regarding the replacement of the fuel injectors of three main engine units due to severe erosion of the nozzle holes and burning of the injector tips. The report must explain how the defects were detected, the likely cause of the damage and the action which has been implemented…

EK Motor Oct 2019 (Q3)

—

by

(a) Explain why multiple air inlet and exhaust valves are fitted to some medium speed diesel engines (4) (b) Explain how the valve actuator (tappet) clearance is set for multiple valve installations (4) (c) Write a procedure for checking the valve operating mechanics of a medium speed engine (8) Cylinder head Oct 2019 (Q3)

EK Motor Oct 2019 (Q2)

—

by

As Chief Engineer write instructions for the main and auxiliary engine fuel change-over procedures to be followed when a vessel is due to move into an Emission Control Area. Approximate times must be mentioned to ensure that the vessel does not infringe any regulations and the instructions must mention steps required to avoid cross-contamination of…

EK Motor Oct 2019 (Q1)

—

by

With reference to fatigue cracking: (a) describe, with the aid of an S/N curve, the relationship between applied stress and the number of applied stress fluctuations in fatigue crack propagation (5) (b) Define the term Stress Raiser, giving examples and explaining the influence of a stress raiser on the propagation of a fatigue crack (5)…

EK Motor Jul 2019 (Q9)

—

by