# Reciprocating internal combustion engines?

9.1 An air-standard Otto cycle has a compression ratio of 8.5. At the beginning of compression,p1 100 kPa and T1 300K. The heat addition per unit mass of air is 1400 kJ/kg. Determine (a) the net work, in kJ per kg of air. (b) the thermal efficiency of the cycle.(c) the mean effective pressure, in kPa. (d) the maximum temperature in the cycle, in K.