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What is the difference between brake horsepower and horsepower?
Wiki User
∙ 8y ago
The difference between brake horsepower and horsepower or wheel horsepower, they are the same thing, is that brake horse power is the power produced by the crank. The wheel horsepower is the amount of power delivered to the wheels. Brake horsepower refers to the method used to test the engine. A brake is attached to the engine and used to maintain the engine at a constant RPM at full throttle. The delivered power output is then a simple calculation of RPM times torque. Horse power is based on the average amount of work that a horse could do in a day. It is taken to be 746watts. well you guessed it engine output is also specified in kilowatts so divide by 746 and you have horsepower. As stated above it is all the same thing. There is a difference between advertised horsepower and brake horsepower. Advertised horsepower is what a manufacturer will rate its engine/automobile/machine to produce. Brake horsepower is the actual measured horsepower, for example, of a motor on an engine dynamometer.
Wiki User
∙ 8y ago
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What is the difference between Brake power and horse power?
Brake power is stopping power and horsepower is go power.
What is the relationship between pump impeller diameter and pump horsepower?
The brake horsepower varies as a cube of the impeller diameter.
What is the difference between Shaft horsepower and Brake horsepower?
Shaft horsepower is the power output from an engine after it is put through the gear train and other components that result in a loss of power. It is usually used in respect to aeroplanes and ships though it can be used as the power output from a cars gearbox. Brake horsepower is the power an engine puts out at the crank and is not subject to losses. It is always higher than the true horsepower. The true horsepower or rear wheel horsepower is the power that is actually driving a vehicle foreward and is probably the most important for comparing motor vehicles. Horsepower itself is the imperial unit for power, like the metric systems Watt. 1 hp = 0.75kW
Is there a difference between a hemi 265 and a hemi 245?
The difference between a hemi 265 and a hemi 245 is the horsepower. The 265 has a 218 @ 4,800 gross horsepower while the 245 has 165 @ 4,400 gross horsepower.
What is the difference between horsepower and brake horsepower?
Horsepower refers to the total power at the driven wheels of a vehicle whilst brake horsepower refers to the net output power posessed by its engine.Further AnswerThe above answer is not altogether correct, because the horsepower is simply the Imperial unit of measurement for power. These days, in most countries, it has been replaced by the watt (or, in practice, kilowatt), which is the SI unit (1 hp = 746 W). 'Brake' refers to the output (as opposed to input) power of a machine. In the case of a car, the brake horsepower (or kilowatts) is the power remaining, after losses due to heat transfer, etc., have been taken into account. In other words, output power (brake power) is input power minus losses.
Is brake horsepower different from horsepower?
yes of course.
What is the difference between hp and bhp?
Horsepower and Brake horsepower are really the same thing as far as mathematical calculation. The difference is how it is measured. Brake horsepower is usually a measure of an engine's horsepower at the shaft WITHOUT anything attached to the engine that would normally be required like the water pump, alternator, power-steering pump, airconditioner, etc. Brake horsepower is usually a theoretical calculation or a measurement made only in a lab under controlled conditions since an engine cannot run without most of the things that it would be required to remove. In the lab/shop they would conect the engine to the dynomometer and then supply coolent, oil pressure, electricity, etc through external means.
What is the difference between a Mercury 90 horsepower motor and a Mercury 115 horsepower motor?
25 horse power.
How do you calculate brake hourse power from wheel horse power?
"they are basically equal"- Previous Answer They are not even close to equal. You can't calculate brake horsepower from wheel horsepower unless you know the exact losses through the drivetrain of the vehicle in question. The actual percent lost through any given drivetrain can vary dramatically. In order to know the losses you would need to measure the % difference between the brake horsepower and the wheel horsepower. Then you would already know the brake horsepower, and any calculations would be unnecessary. FYI- Brake horsepower is a rating of the engine output before the drivetrain/water pump/alternator/other attachments. It will be a higher number than wheel horsepower. It is measured by a brake dynomometer at the crankshaft of an engine. Wheel horsepower is generally 15-20% less (sometimes more than 20% less) than brake horsepower depending on whether the vehicle is FWD or RWD, or manual or automatic transmission. Usually the least losses will be in a FWD, manual transmission, and the most losses will be in a RWD, auto transmission. Auto manufacturers rate their engines in brake horsepower, as it allows them to advertise higher horsepower numbers than what is actually going to the ground.
What is the difference between a brake booster and power brakes?
The brake booster is part of the power brake system.
IN reference to autos What is the difference between brake horse power and barrel horse power?
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). Never heard of Barrel H.P.
What is the horsepower of a Triumph America?
According to Triumph, it is 54 bhp (brake horsepower) @ 6,750 rpm. According to Encyclopedia Britannica, horsepower at the output shaft of an engine, turbine, or motor is termed brake horsepower or shaft horsepower.
