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Q8. (a) Describe with the aid of sketches the operation of a four-stroke dual fuel engine,

explaining how the correct amount of gaseous and liquid fuels are supplied to the cylinders to meet the power requirement and how the cylinder charge is ignited. (10)

(b) State, with reasons, three problems associated with the burning of gaseous fuels in a

diesel engine, indicating how these problems may be overcome. (6)