Q6. a) Explain how diesel engine cylinder performance is checked. (4)
b) Sketch an indicator diagram showing good cylinder combustion and on the same indicator diagram show combustion defects due to EACH of the following.
i) Early fuel injection. (2)
ii) Late fuel injection. (2)
iii) Poor fuel atomisation. (2)
c) Explain how the cylinder combustion defects drawn in (b) may be corrected. (6)
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