Q2. Sketch and show all parts of two-stroke engine’s Stuffing box. Describe the procedure of in place (Without removing piston) overhauling two stroke engine’s Stuffing box. Your answer should include all safety precautions taken and proper tools used during overhaul of Stuffing box.
Q9. For 2-Stroke Marine Diesel Engine
a) Describe problems in achieving good lubrication of Cylinder Liner. (6)
b) What are the properties of good cylinder oil? (4)
c) What are the consequences of under and over lubrication of liner? (6)
Q6. (a) How is a 2-stroke engine started? Describe the sequence of engine starting. (5)
(b) Draw the Timing Diagram of engine starting, showing crank position of each Step. (6)
(c) What is OVERLAP in engine starting? (5)
Q8. a) Draw diagrammatic sectional view of crosshead of 2-Stroke Diesel engine. Name each part. (8)
b) Describe function of each parts. (4)
c) How concentric movement of piston rod is converted to angular movement of crankshaft. (4)
Q4. (a) What is the function of connecting rod in a 2-stroke marine diesel engine? (4)
(b) Draw a diagrammatic sketch of connecting rod of 2-stroke engine. Name each component and describe its function. (8)
(c) Draw a diagrammatic sketch showing how lubricating oil is passed to crankpin bearing. (4)
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