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What is the difference between Shaft horsepower and Brake horsepower?
Wiki User
∙ 12y ago
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
Wiki User
∙ 15y ago
Wiki User
∙ 12y agoShaft h-p (horsepower) is the power output of an engine. Brake h-p is the power available at the wheels of a vehicle - or at whatever other type of load the engine is set-up to drive. The difference between Shaft h-p and Brake h-p is what are known as Drivetrain Losses.
The above is incorrect. The power output at the wheels of a car, truck, or other land vehicle is known as the "wheel horsepower". The Brake horsepower is the horsepower measured at the output of the engine's crankshaft. So called, because it was measured by fitting a braking apparatus to the engine's flywheel to maintain a constant load on the engine during the power measurement. The difference between brake horsepower and wheel horsepower is attributed to friction losses in the drivetrain (transmission, driveshaft, differential, axles, wheel bearings, etc). Otherwise known as "drivetrain losses".
Shaft horsepower, on the other hand, is a measurement of the horsepower at the driving end of the propeller shaft of a ship, or an airplane, driven by a reciprocating internal combustion or steam engine.
Shaft horsepower is similar to wheel horsepower, but distinct from brake horsepower.
Wiki User
∙ 15y agobreak horsepower is power measured by a specific method where the engine is run against a calibrated brake.
Wiki User
∙ 9y agoHorse power is a measure of the engine power compared to how many horses is the equivalent. Brake horsepower is the same concept but for the brakes.
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Is the brake power the output power of an engine?
No, "Horsepower" was originally defined to compare the output of steam engines with the power of draft horses. "Brake horsepower" (BHP) is the amount of work generated by a motor without taking into consideration any of the various auxiliary components that may slow down the actual speed of the motor. Sometimes referred to as pure horsepower, brake horsepower is measured within the engine's output shaft.
Difference between a nail and a screw?
A nail has a smooth straight shaft and a flat head that requires a hammer to pound the nail in. A screw has rivets on the shaft and the head has a shape to it so a screwdriver is needed to screw in the screw.
What is the difference between flange and coupling?
flange is a protruding rim, edge, collar, as on a wheel or a pipe, shaft, used to strengthen an object, hold it place, or attach to another object.while coupling is a device to connect two shaft together at their ends for the purpose of transmitting power.
What is the functional difference between a ball valve and a butterfly valve?
A ball valve is a ball with a hole through it that rotates around its axis to expose the hole for flow or the solid wall of the ball for no flow. The butterfly valve is a flat piece that is supported in the middle by a shaft that opens or closes when the shaft is rotated.
What is difference between radial flow turbine and axial flow turbine?
in a radial flow turbine the steam enters the turbine in the direction of its radius and leaves it in the direction of the axis of the shaft. in a axial flow turbine the steam enters the turbine in the direction of the axis of the shaft and leaves the turbine in the same direction.
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.
What does the term 'bhp' mean?
Brake Horsepower - 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.
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 does brake in brake horsepower define?
What does the word "Brake" mean in Brake Horsepower?Brake refers to the de Prony Brake which was invented by Gaspard de Prony and used to determine engine torque and power. The device imposed known values for loads on the engine's output (crank) shaft (by wrapping a belt around the output shaft) in order to produce resulting specific engine rotational speeds in RPMs. Quantities for torque and horsepower were then calculated using simple formulas of mechanical physics (i.e., Torque = Force x Distance & Horsepower = Torque x RPM / 5252 ;using the inch-lb system). Horsepower calculated using this method is known as Brake Horsepower or bhp.
What is Relation between shaft power to horsepower?
The point at which the horsepower measurement is taken. A 100hp outboard engine may only deliver 87 horsepower to the propeller due to losses in the transmission and bearings. The engine horsepower is 100, but the shaft horsepower rating is 87 horsepower.
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 does bhp brake horsepower mean?
Brake horse power is the power output of the drive shaft on an engine without the power loss caused by the gears, transmission, friction, etc. The actual useful horsepower delivered to the propellor or wheel is called the shaft horsepower. Its also called effective ,true, wheel horsepower as well as other terms. The term horsepower is is not a good measurement of power as there asre too many different systems of measuring horsepower. The current trend is to use kilowatts or megawatts.
Is the brake power the output power of an engine?
No, "Horsepower" was originally defined to compare the output of steam engines with the power of draft horses. "Brake horsepower" (BHP) is the amount of work generated by a motor without taking into consideration any of the various auxiliary components that may slow down the actual speed of the motor. Sometimes referred to as pure horsepower, brake horsepower is measured within the engine's output shaft.
Is shaft horsepower of a ship the total of all shafts or of each shaft?
Of all.
What is the difference between a 350 Chevy crank shaft and a 400 crank shaft?
400 has a longer stroke
What is the difference between the American and Russian rockets?
Single shaft turbo ?
What is meant by brake horse power in cars?
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. 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 use of a band brake to measure torque during the test (which is multiplied by the engine speed in revs/sec and the circumference of the band to give the power).
