A spark-ignition engine operates with fuel-air ratio of 0.067 while the calorific value of the fuel is 42000 kJ /kg. The
Posted: Thu Jun 02, 2022 10:26 am
A spark-ignition engine operates with fuel-air ratio of 0.067 while the calorific value of the fuel is 42000 kJ /kg. The overall brake thermal efficiency is 20% for brake power output of 73.6 kW. (i) Compute the amount of air per hour, kg/hr? (ii) If the indicated thermal efficiency is 50 %, what is the friction power? (iii) Compute the brake specific fuel consumption?