EK Motor Dec 2018 (Q7)

(a) Explain why pre-mixing of gas and air before supply to the engine cannot be undertaken with 2-stroke cycle engines but can be applied to 4-stroke cycle engines (4)  

(b) Describe, with the aid of a sketch, the fuel arrangement at the cylinder of a 2-stroke cycle fuel diesel engine which operates with high gas injection (12)

Dec 2018 (Q7)