Determine the output brake horsepower of a small two-stroke Otto cycle internal combustion engine that has the following characteristics:
Displacement = 5:00 in3
Speed = 2000:rpm
Compression ratio = 8:00 to 1
Air-fuel ratio = 15:0 to 1
Mechanical efficiency = 30:0%
Fuel heating value = 18:0 × 103 Btu/lbm
Ambient conditions = 14:7 psia and 70:0°F