A twin-cylinder two-stroke engine has a swept volume of 150 cm³. The maximum power output is 19 kW at 11000 rpm. At this condition, the bsfc is 0.11 kg/MJ, and the gravimetric air/fuel ratio is 12:1. If the ambient test conditions were 10°C and 1.03 bar, and the fuel has a calorific value of 44 MJ/kg, calculate the bmep, the brake thermal efficiency and the volumetric efficiency.