Brake-horsepower meaning

The definition of brake horsepower means an engine's actual horsepower which is measured by a dynamometer using a brake attached to the engine's driveshaft.

An example of brake horsepower is the horsepower delivered directly to a car's driveshaft.

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The actual or useful horsepower of an engine, usually determined from the force exerted on a friction brake or dynamometer connected to the drive shaft.
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The actual horsepower of an engine, measured by a brake attached to the drive shaft and recorded on a dynamometer.
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The useful horsepower of an engine as measured at its drive shaft.
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Origin of brake-horsepower

  • The term refers to a method of measuring the usable power of an engine by connecting a brake to the drive shaft of the engine. Other methods have been developed but the term remains.
    From Wiktionary