What is Horse Power
The power, in simple terms, is ‘rate or speed of doing work’. The work is defined as a 'force operating thru' a distance'. In terms of automotive engineering, it is 'horse power' (hp). The term ‘horse power’ comes from the erstwhile practice of measuring the rate of work done by a horse, which is equal to 33,000 ft-lb of work done per minute.
A conventional engines produces its power by burning the fuel. The combustion
process releases the heat energy in the fuel, which results in
generation of expanding forces known as power. The engine’s power is
commonly measured in Brake-Horse-Power (bhp), Pferdestärke (PS) – which is the German translation of horsepower, kilowatt (kW) in case of metric system and in case of imperial / British system it is 'feet-pound-force-per-second' (fps).
horse power (mechanical) = 33,000 ft·lbf/min = 550 ft·lbf/s
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