Horsepower

Mechanical horse (KM) - extra power unit. Power unit in MKS units. 1 KM = 75 kgfm / s = 735,49875 W = 0.9863 HP

A unit created in the 19th century in Germany, modeled on a steam horse (HP) used in Anglo-Saxon countries for comparing steam power with a horse. A 3-hp steam engine can give approximately the same power as a working horse. The 3/1 is a 3-hp engine that can replace 3 horses running all day in 8-hour increments, and this description of engine power was to make it easier for investors to replace their horses with a steam engine. So the power of 3 horsepower is the gross power given by a horse without the loss. The German abbreviation PS (Pferdestärke) is also used.

After insertion of the SI system replaced by a w. Still used to determine the power of internal combustion engines. When power is given in both units, the second value is placed in parentheses.

You can also find the BHP (or BHP), which is the Brake Horse Power - the power obtained on the dynamometer; The bhp value is usually lower than the nominal engine power because it takes into account the resistance of further gearboxes (eg gearboxes), the propulsion system, but is closer to the value of the vehicle.

Commonly used by horse horses is the British steam horses (HP), which can lead to differences in power calculation (both units are translated as horsepower in English, possibly differentiated by: HP (I) - Steam horse, from Imperial and HP (M) - mechanical horse, from Metric).

In the past, there was also indicated horsepower (ihp) indicating the theoretical power of the steam engine, without taking into account the resistance of the engine itself and the further gear.

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