DieselShip's Online Content Library

Q1. (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)

Q1. Describe following terms with respect to Diesel Engine with suitable diagram. (16)

a) Piston Stroke

b) Swept Volume

c) Clearance volume

d) Compression ratio.

Q3. (a) Draw a simple sketch of cylinder head of 2-stroke main engine, describing function of cylinder head (6)

(b) Name the mountings on the cylinder head and their functions (6)

(c) Name the material of cylinder head, giving reasons (4)

Q4. (a) Draw simple sketch of a crank shaft, with names of the different parts of the crank shaft (8)

(b) Describe function on crankshaft of 2-stroke diesel engine (4)

(c) Describe fittings on crank shaft for various operation of main engine (4)

Q3. (a) Explain, why is it important to measure bearing clearances in a diesel engine? (4)

(b) What is Bridge gauge? How is the Bridge gauge used? Explain with a diagram. (6)

(c) What are other recommended methods for checking bearing clearances. (6)

Q6. (a) Draw a diagrammatic sketch of auxiliary boiler on your ship, labelling all the mountings provided (8)

(b) Describe function of each mounting in brief (8)

Q5. (a) What is the definition of the following terms: (6)
(i) Indicated Power
(ii) Specific fuel oil consumption
(iii) Brake power
(iv) Mechanical efficiency
(v) Thermal efficiency

(b) What is an Indicator diagram of diesel engine? Draw a diagram and show different points related to Diesel Engine power measurement. (6)

Q1. (a) Sketch and describe the Starting air system of main engine. (8)

(b) What are the safety interlocks provided in compressed air Starting system of Main Engine? (8)

Q9. a) Describe how fuel injector components deteriorate with time? (6)

b) What are effects of deterioration of fuel injector components? (6)

c) What are the signs of a bad injector? (4)