Companies of the United Kingdom often intermix metric horsepower and mechanical horsepower depending on the origin of the engine in question. The various units used to indicate this definition ("PS", "CV", "pk", and "ch") all translate to "horse power" in English, so it is common to see these values referred to as " horsepower" or " hp" in the press releases or media coverage of the German, French, Italian, and Japanese automobile companies. Metric horsepower began in Germany in the 19th century and became popular across Europe and Asia. Divide that son-of-a-gun by two And that's the number of watts in a horsepower too. In fourteen hundred and ninety-two Columbus sailed the ocean blue. The memory aid states that 1 hp = 1/2 Columbus or 746 W.
Under this system, one horsepower is defined as:ġ hp = 33,000 ft The most-common definition of horsepower for engines is the one originally proposed by James Watt in 1782. Mechanical horsepower See History of the term "horsepower" RAC horsepower is based solely on the dimensions of a piston engine.
lbf per minute)Īdditionally, the term " horsepower" has been applied to calculated (rather than measured) metrics:.The following metrics have been widely used: There have been many definitions for the term over the years since James Watt first coined the term in 1782. 3.1 Conversion of historical definition to watts.1.7 RAC horsepower (taxable horsepower).
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