Q2. Explain the constructional differences between 2-stroke Slow Speed and 4-stroke Medium Speed diesel engines. (16)
Q4. With reference to marine diesel engines:
(a) State the purpose of a camshaft. (2)
(b) State TWO methods of driving a camshaft on a large marine diesel engine. (4)
(c) State the speed of the camshaft relative to the crankshaft on:
(i) A four-stroke engine: (2)
(ii) A two-stroke engine. (2)
(d) Sketch a fuel cam for a unidirectional diesel engine indicating EACH of the following:
(i) Point of injection. (2)
(ii) Peak. (2)
(iii) Slow return. (2)
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