✖Brake power per cylinder per stroke is defined as the partial brake power utilized to move the piston during any stroke considering single cylinder.ⓘ Brake power per cylinder per stroke [W⋅_b]			+10% -10%
✖Area of piston is the value of area of the piston in a piston pump.ⓘ Area of Piston [A_p]			+10% -10%

✖Brake specific power is defined as the power used to do work on the piston per cylinder per cycle.ⓘ Brake specific power [B_sp]

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Formula

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Brake specific power

Formula

`"B"_{"sp"} = "W⋅"_{"b"}/"A"_{"p"}`

Example

`"80000W"="4000W"/"0.05m²"`

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Brake specific power Solution

STEP 0: Pre-Calculation Summary

Formula Used

Brake specific power = Brake power per cylinder per stroke/Area of Piston
B_sp = W⋅_b/A_p
This formula uses 3 Variables

Variables Used

Brake specific power - (Measured in Watt) - Brake specific power is defined as the power used to do work on the piston per cylinder per cycle.
Brake power per cylinder per stroke - (Measured in Watt) - Brake power per cylinder per stroke is defined as the partial brake power utilized to move the piston during any stroke considering single cylinder.
Area of Piston - (Measured in Square Meter) - Area of piston is the value of area of the piston in a piston pump.

STEP 1: Convert Input(s) to Base Unit

Brake power per cylinder per stroke: 4000 Watt --> 4000 Watt No Conversion Required
Area of Piston: 0.05 Square Meter --> 0.05 Square Meter No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

B_sp = W⋅_b/A_p --> 4000/0.05

Evaluating ... ...

B_sp = 80000

STEP 3: Convert Result to Output's Unit

80000 Watt --> No Conversion Required

FINAL ANSWER

80000 Watt <-- Brake specific power

(Calculation completed in 00.020 seconds)

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Home » Physics » IC Engine » Engine Performance Parameters » Mechanical » Engine Dynamics » Brake specific power

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Created by Syed Adnan

Ramaiah University of Applied Sciences (RUAS), bangalore

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Brake specific power Formula

Brake specific power = Brake power per cylinder per stroke/Area of Piston
B_sp = W⋅_b/A_p

What is brake specific power?

Brake specific power means the usable power output of the engine to move the piston, not including power required to fuel, lubricate, or heat the engine, circulate coolant to the engine, or to operate aftertreatment devices.

How to Calculate Brake specific power?

Brake specific power calculator uses Brake specific power = Brake power per cylinder per stroke/Area of Piston to calculate the Brake specific power, The Brake specific power formula is defined as the power utilized to do work on the piston per cylinder per stroke and is specific to that piston in the engine. Brake specific power is denoted by B_sp symbol.

How to calculate Brake specific power using this online calculator? To use this online calculator for Brake specific power, enter Brake power per cylinder per stroke (W⋅_b) & Area of Piston (A_p) and hit the calculate button. Here is how the Brake specific power calculation can be explained with given input values -> 80000 = 4000/0.05.

FAQ

What is Brake specific power?

The Brake specific power formula is defined as the power utilized to do work on the piston per cylinder per stroke and is specific to that piston in the engine and is represented as B_sp = W⋅_b/A_p or Brake specific power = Brake power per cylinder per stroke/Area of Piston. Brake power per cylinder per stroke is defined as the partial brake power utilized to move the piston during any stroke considering single cylinder & Area of piston is the value of area of the piston in a piston pump.

How to calculate Brake specific power?

The Brake specific power formula is defined as the power utilized to do work on the piston per cylinder per stroke and is specific to that piston in the engine is calculated using Brake specific power = Brake power per cylinder per stroke/Area of Piston. To calculate Brake specific power, you need Brake power per cylinder per stroke (W⋅_b) & Area of Piston (A_p). With our tool, you need to enter the respective value for Brake power per cylinder per stroke & Area of Piston and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.

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