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Q2. In an air standard diesel cycle the volume compression ratio is 16:1. The heat takes place for 12% of the stroke.

The minimum pressure and temperature in cycle are 1.3 bar and 45°C respectively.

(a) Sketch the cycle on pressure-volume and Temperature-specific entropy diagrams. (2)

(b) Calculate EACH of the following:

(i) the temperatures and pressures at the cardinal points of the cycle; (5)

(ii) the thermal efficiency; (4)

(iii) the mean effective pressure (5)

Note: for air, γ = 1.4 and = 718 J/kgK.