metric horsepower
Also known as PS, metric HP, metric horse power, hp, cv, ISO 14396
Horsepower (hp) is a unit of measurement of power, or the rate at which work is done, usually in reference to the output of engines or motors. There are many different standards and types of horsepower. Two common definitions used today are the imperial horsepower, abbreviated hp or bhp, which is about , and the metric horsepower, also represented as cv or PS, which is approximately . The electric horsepower, hpE, is exactly , while the boiler horsepower is 9809.5 or 9811 watts, depending on the exact year.
AI overview
Metric horsepower (also called cv or PS) is a unit of power used to measure how much work an engine or motor can do per unit of time, similar to the more familiar imperial horsepower but using a slightly different standard. It matters because different countries and industries use different horsepower standards, so understanding metric horsepower helps people compare engine power across different systems and specifications.
AI-generated from the Wikipedia summary — may contain errors.
Key facts
- Unit.name
- Horsepower
- Unit.image
- Imperial Horsepower.svg
- Unit.caption
- One imperial horsepower lifts by in 1 second.
- Unit.quantity
- power
- Unit.symbol
- hp
via Wikipedia infobox
Article
32 sectionsContents
- History
- Calculating power
- Definitions
- Imperial horsepower
- {{anchor|Metric horsepower|Metric|PS|cv|hk|pk|ks|ch}} Metric horsepower (PS, KM, cv, hk, pk, k, ks, ch)
- Tax horsepower
- Electrical horsepower
- Hydraulic horsepower
- Boiler horsepower
- Drawbar power
- RAC horsepower (taxable horsepower)
- Measurement
- {{anchor|nhp}}{{anchor|Nominal horsepower}} Nominal horsepower
- {{anchor|Indicated horsepower|ihp}} Indicated horsepower
- {{anchor|bhp|Brake_horsepower_(bhp)}} Brake horsepower
- Shaft horsepower
- {{anchor|netgross|standards}} Engine power test standards
- {{anchor|SAE}} Society of Automotive Engineers/SAE International
- Early "SAE horsepower"
- {{anchor|SAE gross}} SAE gross power
- {{anchor|SAE net}} SAE net power
- SAE certified power
- {{anchor|DIN|70020}}''Deutsches Institut für Normung'' 70020 (DIN 70020)
- CUNA
- {{anchor|ECE R24}}Economic Commission for Europe R24
- {{anchor|ECE R85}}Economic Commission for Europe R85
- 80/1269/EEC
- {{anchor|ISO}}International Organization for Standardization
- {{anchor|Japan|JIS}}Japanese Industrial Standard (JIS) D 1001
- See also
- References
- External links
Horsepower (hp) is a unit of measurement of power, or the rate at which work is done, usually in reference to the output of engines or motors. There are many different standards and types of horsepower. Two common definitions used today are the imperial horsepower, abbreviated hp or bhp, which is about , and the metric horsepower, also represented as cv or PS, which is approximately . The electric horsepower, hpE, is exactly , while the boiler horsepower is 9809.5 or 9811 watts, depending on the exact year.
The term was adopted in the late 18th century by Scottish engineer James Watt to compare the output of steam engines with the power of draft horses. It was later expanded to include the output power of other power-generating machinery such as piston engines, turbines, and electric motors. The definition of the unit varied among geographical regions. Most countries now use the SI unit watt for measurement of power. With the implementation of the EU Directive 80/181/EEC on 1 January 2010, the use of horsepower in the EU is permitted only as a supplementary unit.