Brake horsepower (bhp) is the measure of an engine's horsepower without the loss in power caused by the gearbox, generator, differential, water pump and other auxiliaries. Thus the prefix “brake” refers to where the power is measured: at the engine's output shaft, as on an engine dynamometer. Þetta er BHP, þeas það afl sem vélin skilar beint. The term “brake” refers to the original use of a band brake to measure torque during the test (which is multiplied by the engine speed in revs/sec and...