Q6. With reference to engine fuel injector nozzle cooling;
(a) Explain why fuel injector nozzle cooling is necessary(4)
(b) Describe, with the aid of a sketch, the operation of a nozzle cooling system for a generator engine; (8)
(c) Explain how fuel injector nozzles are cooled on engines which are not fitted with a separate nozzle cooling system (4)
