Horsepower
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From: Wickliffe Ohio
Horsepower
Brake Horsepower (bhp)
The effective power output of an engine, sometimes measured as the resistance the engine provides to a brake attached to the output shaft. See horsepower.
Horsepower (hp)
A unit of power representing the power exerted by a horse in pulling. The horsepower was defined by James Watt (1736-1819), the inventor of the steam engine, who determined after careful measurements that a horse is typically capable of a power rate of 550 foot-pounds per second. This means that a horse, harnessed to an appropriate machine, can lift 550 pounds at the rate of 1 foot per second. Today the SI unit of power is named for Watt, and one horsepower is equal to approximately 745.6999 watts. Outside the U.S., the English word "horsepower" is often used to mean the metric horsepower, a slightly smaller unit.
Metric Horsepower
A unit of power, defined to be the power required to raise a mass of 75 kilograms at a velocity of 1 meter per second. This is approximately 735.499 watts or 0.98632 horsepower. The unit is known in French as cheval-vapeur (ch), in Dutch as paardekracht (pk), and in German as Pferdestärke (PS).
The effective power output of an engine, sometimes measured as the resistance the engine provides to a brake attached to the output shaft. See horsepower.
Horsepower (hp)
A unit of power representing the power exerted by a horse in pulling. The horsepower was defined by James Watt (1736-1819), the inventor of the steam engine, who determined after careful measurements that a horse is typically capable of a power rate of 550 foot-pounds per second. This means that a horse, harnessed to an appropriate machine, can lift 550 pounds at the rate of 1 foot per second. Today the SI unit of power is named for Watt, and one horsepower is equal to approximately 745.6999 watts. Outside the U.S., the English word "horsepower" is often used to mean the metric horsepower, a slightly smaller unit.
Metric Horsepower
A unit of power, defined to be the power required to raise a mass of 75 kilograms at a velocity of 1 meter per second. This is approximately 735.499 watts or 0.98632 horsepower. The unit is known in French as cheval-vapeur (ch), in Dutch as paardekracht (pk), and in German as Pferdestärke (PS).
