Category: EK Motor

—

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 Dec 2020 (Q4)

EK Motor Dec 2020 (Q3)

—

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 2020 (Q2)

—

by

(a) Describe, with the aid of a sketch, a main engine fuel oil circulating system incorporating the MGO and HFO service tanks, a fuel oil change-over system, heating and viscosity control system and tank return system (10) (b) Write instructions for changing the system described in part (a) of the question from MGO to HFO,…

EK Motor Dec 2020 (Q1)

—

by

As Chief Engineer Officer, write a report to the engineering superintendent regarding failure of a four-stroke main engine, to complete a slow turning procedure and the discovery of water around a cylinder head gasket after the failed slow turning attempt. The report must outline the possible cause of the problem and the steps taken to…

EK Motor Oct 2020 (Q9)

—

by

(a) Describe, with the aid of a sketch, a main engine fresh water cooling water system, incorporating HT and LT system (10) (b) Describe the charge air supply system for a turbocharged engine, explaining the purpose of each main part. (6) Cooling system & FWG Oct 2020 (Q9)

EK Motor Oct 2020 (Q8)

—

by

With reference to diesel engine SOx exhaust gas cleaning and pollution control: (a) State, with reasons, which system parameters are monitored, explaining where the monitoring devices are located, how the data is stored and how data is made available to regulatory authorities (10) (b) State how pollution of sea water can be caused by the…

EK Motor Oct 2020 (Q7)

—

by

(a) Explain why a diesel engine cylinder is supplied with excess air (4) (b) Explain why fuel droplet size produced during injection has to be within narrow limits in order to enable good cylinder combustion to be achieved (4) (c) Explain how the desired fuel droplet size is produced by fuel injections (4) (d) State…

EK Motor Oct 2020 (Q6)

—

by

(a) Describe a procedure for cylinder liner calibration, indicating how the readings are recorded to allow for easy recognition of liner wear (6) (b) Describe TWO forms of abnormal cylinder wear, explaining how EACH is recognised (6) (c) Explain how abnormal cylinder liner wear may be prevented (4) Cylinder liner Oct 2020 (Q6)

EK Motor Oct 2020 (Q5)

—

by

(a) Draw a labeled sketch through a section of a crosshead type engine, showing the location and fitting of tie rods (4) (b) Explain why tie rods are fitted is crosshead engines and not required for a trunk piston engines (6) (c) As Chief Engineer Officer, write instruction for the checking of tie rods fitted…

EK Motor Oct 2020 (Q4)

—

by