what does brake horse power mean on a cars engine?

Answer 1

Brake horsepower is measure of watts produced at the crankshaft of the engine. 1 horsepower= 745.7 watts. Most engine manufactures use this measurement to show how powerful their engine is coupled with torque which is a measure of rotational force in ft/lbs. In the real world were the engine is powering a tranmission and then the tires there is about a 20% drop in power between the crankshaft and the wheels.

Answer 2

Brake horse power is defined as the actual horse power at the rear of the engine under normal conditions.Its called brake horse power because a brake is used to slow down a shaft inside a dynometer.It is used for comparing engines a 235cubic inch engine will produse less BHP than a 350cubic inch all things being equal.Hope this helps Mick.

Answer 3

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what does brake horse power mean on a cars engine?

Answer 4

Brake Horsepower

Answer 5

They are able to measure this Horse Power by putting a load on the engine and measuring the output on an engine dynomometer. Horse power is just that, how much can a horse lift in weight a set distance in so many seconds. That a standard measurment for every engine.

Answer 6

Some good explanation from the other guys, Watts is power a pushing force.
The normal confusion between BHP and Torque can be explained with a good analogy.
My college instructor explained it to me like this, If you were trying to undo a wheel nut on your car and you had a two inch spanner it doesn't matter how strong you are you wouldn't be able to undo it.
If the spanner was say 1 meter long you would have more leverage to undo the nut.
Torque is the length of your spanner the higher the torque the longer the spanner. (Turning Force)

BHP is you the (Pushing Force), or power that can be produced.
So if you are very strong (High BHP) you could undo the nut easier.
So one without the other is pointless...

Hope this helps....

Answer 7

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. 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

Answer 8

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A unit of power, used in stating the power required to drive machinery, and in estimating the capabilities of animals or steam engines and other prime movers for doing work. It is the power required for the performance of work at the rate of 33,000 English units of work per minute; hence, it is the power that must be exerted in lifting 33,000 pounds at the rate of one foot per minute, or 550 pounds at the rate of one foot per second, or 55 pounds at the rate of ten feet per second, etc. Thus, cars with engines that have high horsepower ratings will be more powerful, and probaby faster than those with low BHP ratings. The BHP rating is being replaced in England by the SI unit of kW inline with European Metric Practice. Another measure of engine power is the PS or Pferdestarke, which is German, and literally translated means 'horse strength'

Answer 9

Its to do with the old horse and cart thing, - how many horses does it take to pull the cart ie that is transfered to ur car pulling power.
eg 100BHP is having 100 horses pulling.

Answer 10

I would like to ask the same question as the person above.