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Brake power measured with dynamo meter Formula

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Brake Power is the power available at the crankshaft. Check FAQs

BP = \frac{π \cdot D \cdot (N \cdot 60) \cdot (W d - S)}{60}

BP - Brake Power?D - Pulley Diameter?N - Engine Speed?W_d - Dead Weight?S - Spring Scale Reading?π - Archimedes' constant?

Brake power measured with dynamo meter Example

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Here is how the Brake power measured with dynamo meter equation looks like with Values.

Here is how the Brake power measured with dynamo meter equation looks like with Units.

Here is how the Brake power measured with dynamo meter equation looks like.

1.9344 = \frac{3.1416 \cdot 0.0021 \cdot (400 \cdot 60) \cdot (10 - 3)}{60}

1.9344W = \frac{3.1416 \cdot 0.0021m \cdot (400rev/min \cdot 60) \cdot (10N - 3N)}{60}

1.9344 = \frac{3.1416 \cdot 0.0021 \cdot (400 \cdot 60) \cdot (10 - 3)}{60}

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Brake power measured with dynamo meter Solution

Follow our step by step solution on how to calculate Brake power measured with dynamo meter?

FIRST Step Consider the formula

BP = \frac{π \cdot D \cdot (N \cdot 60) \cdot (W d - S)}{60}

Next Step Substitute values of Variables

∴

BP = \frac{π \cdot 0.0021m \cdot (400rev/min \cdot 60) \cdot (10N - 3N)}{60}

Next Step Substitute values of Constants

∴

BP = \frac{3.1416 \cdot 0.0021m \cdot (400rev/min \cdot 60) \cdot (10N - 3N)}{60}

Next Step Convert Units

∴

BP = \frac{3.1416 \cdot 0.0021m \cdot (41.8879rad/s \cdot 60) \cdot (10N - 3N)}{60}

Next Step Prepare to Evaluate

∴

BP = \frac{3.1416 \cdot 0.0021 \cdot (41.8879 \cdot 60) \cdot (10 - 3)}{60}

Next Step Evaluate

∴

BP = 1.934442462515W

LAST Step Rounding Answer

∴

BP = 1.9344W

Brake power measured with dynamo meter Formula Elements

Variables

Constants

Brake Power

Brake Power is the power available at the crankshaft.

Symbol: BP

Measurement: PowerUnit: W

Note: Value should be greater than 0.

Formulas to find Brake Power

Pulley Diameter

Pulley Diameter is defined as the diameter of pulley of rope brake dynamo meter.

Symbol: D

Measurement: LengthUnit: m

Note: Value should be greater than 0.

Formulas to find Pulley Diameter

Engine Speed

Engine Speed is the speed at which the crankshaft of the engine rotates.

Symbol: N

Measurement: Angular VelocityUnit: rev/min

Note: Value should be greater than 0.

Formulas to find Engine Speed

Dead Weight

Dead Weight is the weight of the body attached to the spring balance in newtons.

Symbol: W_d

Measurement: ForceUnit: N

Note: Value should be greater than 0.

Formulas to find Dead Weight

Spring Scale Reading

Spring Scale Reading is defined as the readings shown in the spring balance after the dead weight is attached to it.

Symbol: S

Measurement: ForceUnit: N

Note: Value should be greater than 0.

Formulas to find Spring Scale Reading

Archimedes' constant

Archimedes' constant is a mathematical constant that represents the ratio of the circumference of a circle to its diameter.

Symbol: π

Value: 3.14159265358979323846264338327950288

Other formulas in For 4 Stroke Engine category

Go Brake Mean Effective Pressure of 4S Engines given Brake power

P mb = \frac{2 \cdot BP}{L \cdot A c \cdot (N)}

Go Indicated Power of Four-stroke Engine

IP = \frac{k \cdot MEP \cdot L \cdot A c \cdot (N)}{2}

Go Horsepower of engine

HP = \frac{T \cdot E rpm}{5252}

Go Bmep given engine torque

P mb = \frac{2 \cdot π \cdot T \cdot N}{s p}

How to Evaluate Brake power measured with dynamo meter?

Brake power measured with dynamo meter evaluator uses Brake Power = (pi*Pulley Diameter*(Engine Speed*60)*(Dead Weight-Spring Scale Reading))/60 to evaluate the Brake Power, The Brake power measured with dynamo meter formula is defined as the brake power obtained by using a rope brake dynamo meter to measure the brake power of engine. Brake Power is denoted by BP symbol.

How to evaluate Brake power measured with dynamo meter using this online evaluator? To use this online evaluator for Brake power measured with dynamo meter, enter Pulley Diameter (D), Engine Speed (N), Dead Weight (W_d) & Spring Scale Reading (S) and hit the calculate button.

FAQs on Brake power measured with dynamo meter

What is the formula to find Brake power measured with dynamo meter?

The formula of Brake power measured with dynamo meter is expressed as Brake Power = (pi*Pulley Diameter*(Engine Speed*60)*(Dead Weight-Spring Scale Reading))/60. Here is an example- 1381.745 = (pi*0.0021*(41.8879020457308*60)*(10-3))/60.

How to calculate Brake power measured with dynamo meter?

With Pulley Diameter (D), Engine Speed (N), Dead Weight (W_d) & Spring Scale Reading (S) we can find Brake power measured with dynamo meter using the formula - Brake Power = (pi*Pulley Diameter*(Engine Speed*60)*(Dead Weight-Spring Scale Reading))/60. This formula also uses Archimedes' constant .

Can the Brake power measured with dynamo meter be negative?

No, the Brake power measured with dynamo meter, measured in Power cannot be negative.

Which unit is used to measure Brake power measured with dynamo meter?

Brake power measured with dynamo meter is usually measured using the Watt[W] for Power. Kilowatt[W], Milliwatt[W], Microwatt[W] are the few other units in which Brake power measured with dynamo meter can be measured.

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Brake power measured with dynamo meter Formula

Brake power measured with dynamo meter Example

Brake power measured with dynamo meter Solution

Brake power measured with dynamo meter Formula Elements

Other formulas in For 4 Stroke Engine category

How to Evaluate Brake power measured with dynamo meter?

FAQs on Brake power measured with dynamo meter

Variable Name