Determine the pressures and temperatures at all points of the air standard Otto cycle.

Question

The minimum pressure and temperature in an Otto cycle are 100 kPa and 27⁰C. The amount of heat added to the cycle is 1500 kJ/kg.  Determine the pressures and temperatures at all points of the air standard Otto cycle. Also calculate the specific work and the thermal efficiency of th cycle for a compression ratio of 8 : 1 (Take C_v(air) as 0.72 kJ/kg K and $\left ( \frac{C_{P}}{C_{V}} \right )_{air}=1.4$