An oil engine works on the ideal Diesel cycle. The overall compression ratio is 11:1 and constant pressure energy addition ceases at 10% of the stroke. Intake conditions are 96 kN/m2 and 18°C. The engine uses 0.05 m3 of air/s. If ? = 1.4, determine. (a) the thermal efficiency of the cycle; (b) the indicated power of the engine.