How much force is 1 break horse power?

Question

How much force is 1 break horse power?

Answer 1

Well, everybody seems to have answered 'Horse Power' and not Brake Horse Power, so here goes.

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 auxiliary components such as alternator, power steering, and AC compressor. Thus the prefix "brake" refers to where the power is measured: at the engine's output shaft, as on an engine dynamometer. The actual horsepower delivered to the driving wheels is less. An engine would have to be retested to obtain a rating in another system. The term "brake" refers to the original use of a band brake to measure torque during the test (which is multiplied by the engine RPM and a scaling constant to give horsepower).

Or to quote a formula :

Brake horsepower = rpm x torque / 5252

Answer 2

Power can not be directly converted into force.

Power = work done / time

and word done = force x distance travelled.

So Power = force x distance / time

1bhp is approx 750W, which would be 750N force applied while travelling one meter in one second (or 1500N while travelling 2 meters in 4 seconds).

Answer 3

The pulling power of one four legged horse AT THE PROPELLOR  i.e. not just churning water. Think horse drawn English narrowboat before diesel engine. Enough torque or thrust for heavy load but slower than walking pace.

Enough power for a speed boat if its radio controlled.

Answer 4

Power is not force. BHP is measured at the flywheel so you could test the torque (as it is rotational "force")

Answer 5

mark t is 99% correct. the term horse power was developed to convince farmers etc to buy his steam machines.

Answer 6

Roughly the pulling power of 1 horse, around 750 watts.

Answer 7

Yep 33,000 ft-lb/min.

but Ive never used this unit before....normally use 550 ft-lb/sec

it makes sense if you are converting from torque and RPM though.

power is the product of torque and speed and is referred as Brake Horse power because of how the dynomometer is set up.  Its actually a wheel brake (a special one) attached to the power source, sometimes the wheels of a car.  that way they can refer to the horsepower at the wheel.

If you were to plot both torque (ft-lbs) and Horspower(ft'lb/sec) versus RPM you find the maximum horspower has a maximum at a higher RPM than Maximum torque.  This is the process of converting torque into power.  

wer

Answer 8

It is the pulling power of 1 horse, 33,000 ft lbs in one minute.

The term "horsepower" was coined by the engineer James Watt (1736 to 1819) in 1782 while working in the performance of steam engines. This occurred while using a mine pony to lift coal out of a coal mine. He conceived the idea of defining the power exerted by these animals to accomplish this work. He found that, on the average, a mine horse could pull (lift by means of a pulley) 22,000 foot-pounds per minute. Rather than call this "pony" power, he increased these test results by 50 percent, and called it horsepower i.e. 33,000 foot-pounds of work per minute.

Answer 9

1 horsepower = 745.699872 watts