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Q2. The ratio of compression of an engine working on the otto cycle is 4.3:1.

At the beginning of compression, the temperature is 31℃ with a pressure of 0.99 bar.

The maximum cycle pressure is 16.78 bar,

(a) Sketch a pV and Ts graph of the cycle. (2)

(b) Calculate EACH of the following:

(i) the temperature at all points; (9)

(ii) the air standard efficiency of the cycle; (2)

(iii) the mean effective pressure. (3)

Note: For air C_V = 0.718 J/kgK and C_P = 1.005 J/kgK.