1. Calculated using current methods the horsepower rating would be 14 brake horsepower . 2. A brake horsepower hour represents how much energy an engine is producing. 3. The " 140 " referenced above was the " brake horsepower ." 4. This is a coefficient of theoretical brake horsepower and cylinder pressures during combustion. 5. If the engine speed is measured with a tachometer, the brake horsepower is easily calculated. 6. During testing, the output torque and rotational speed were measured to determine the brake horsepower . 7. The 217 brake horsepower motor was supposedly developed from a de Havilland inverted four-cylinder engine. 8. This is equivalent to about 130 brake horsepower . 9. The ships dimensions were; an brake horsepower ( BHP ), which could propel the ship at. 10. The large Ambassador engine thus was the seven main bearing, overhead-valve,, six-cylinder developing 112 brake horsepower .