SAE net horsepower

SAE net horsepower
The brake power (power available at the flywheel or output shaft -- usually the crankshaft) of a fully equipped engine fitted with all the accessories necessary to perform its intended functions unaided. In 1973, automobile manufacturers began publishing their engine specifications in "net" horsepower and "net" torque instead of "gross" figures. In many cases the published numbers were significantly lower in 1973 than in 1972. Some of the decrease was attributed to the addition of pollution equipment, the lowering of compression, and the use of regular unleaded gasoline instead of premium leaded fuel. However most of the decrease in number was a switch to "net" figures. Compare SAE gross horsepower.
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Dictionary of automotive terms. 2015.

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  • SAE gross horsepower — A production engine s actual power available at the flywheel or output shaft (usually crankshaft) as tested with an absorption dynamometer. It differs from SAE net horsepower in that many of the accessories (such as alternator, water pump, etc.)… …   Dictionary of automotive terms

  • net horsepower — See SAE net horsepower …   Dictionary of automotive terms

  • SAE International — SAE Type Professional Organization. Location Warrendale, Pennsylvania Key people Andrew L. Riker, Henry Ford, Thomas Edison, Glenn Martin, Orville Wright, Charles Kettering …   Wikipedia

  • Horsepower — hp redirects here. For other uses, see HP (disambiguation). Horsepower (HP) is the name of several units of measurement of power. The most common definitions equal between 735.5 and 750 watts.[1] Horsepower was originally defined to compare the… …   Wikipedia

  • Horsepower — Einheit Norm Alte Maße und Gewichte Einheitenname Pferdestärke Einheitenzeichen PS Beschriebene Größe(n) Leistung Größensymbol(e) …   Deutsch Wikipedia

  • SAE-PS — Einheit Norm Alte Maße und Gewichte Einheitenname Pferdestärke Einheitenzeichen PS Beschriebene Größe(n) Leistung Größensymbol(e) …   Deutsch Wikipedia

  • horsepower — (HP) A measurement of the engine s ability to perform work. One horsepower is defined as the ability to lift 33,000 pounds one foot in one minute. To find horsepower, the total rate of work in foot pounds accomplished is divided by 33,000. If a… …   Dictionary of automotive terms

  • SAE horsepower — A simple formula of long standing is used to determine horsepower. The formula is: (bore diameter) squared times (number of cylinders) divided by 2.5. This formula is used primarily for licensing purposes and is not very accurate for determining… …   Dictionary of automotive terms

  • brake horsepower — (bhp) A measurement of the actual usable power (not calculated power) measured at the output shaft (usually the crankshaft) rather than at the driveshaft or the wheels. Thus none of the auxiliaries (gearbox, generator, alternator, differential,… …   Dictionary of automotive terms

  • Formula SAE — is a student design competition organized by the Society of Automotive Engineers. The competition was started back in 1978 and was originally called [http://www.sae.org/students/fsaehistory.pdf SAE Mini Indy] .The concept behind Formula SAE is… …   Wikipedia

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