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Specific Power Output Formula

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Specific Power Output of an engine is defined as the power output per unit piston area. Check FAQs

P s = \frac{BP}{A}

P_s - Specific Power Output?BP - Brake Power?A - Area of Cross Section?

Specific Power Output Example

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With units

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Here is how the Specific Power Output equation looks like with Values.

Here is how the Specific Power Output equation looks like with Units.

Here is how the Specific Power Output equation looks like.

183.3333 = \frac{0.55}{30}

183.3333kW = \frac{0.55kW}{30cm²}

183.3333 = \frac{0.55}{30}

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Specific Power Output Solution

Follow our step by step solution on how to calculate Specific Power Output?

FIRST Step Consider the formula

P s = \frac{BP}{A}

Next Step Substitute values of Variables

∴

P s = \frac{0.55kW}{30cm²}

Next Step Convert Units

∴

P s = \frac{550W}{0.003m²}

Next Step Prepare to Evaluate

∴

P s = \frac{550}{0.003}

Next Step Evaluate

∴

P s = 183333.333333333W

Next Step Convert to Output's Unit

∴

P s = 183.333333333333kW

LAST Step Rounding Answer

∴

P s = 183.3333kW

Specific Power Output Formula Elements

Variables

Specific Power Output

Specific Power Output of an engine is defined as the power output per unit piston area.

Symbol: P_s

Measurement: PowerUnit: kW

Note: Value should be greater than 0.

Formulas to find Specific Power Output

Brake Power

Brake Power is the power available at the crankshaft.

Symbol: BP

Measurement: PowerUnit: kW

Note: Value should be greater than 0.

Formulas to find Brake Power

Area of Cross Section

Area of Cross Section is the enclosed surface area, product of length and breadth.

Symbol: A

Measurement: AreaUnit: cm²

Note: Value should be greater than 0.

Formulas to find Area of Cross Section

Other formulas in Important Formulas of Engine Dynamics category

Go Brake Power given Mean Effective Pressure

BP = (P mb \cdot L \cdot A \cdot (N))

Go Mechanical Efficiency of IC engine

η m = (\frac{BP}{IP}) \cdot 100

Go Brake Power given Mechanical Efficiency

BP = (\frac{η m}{100}) \cdot IP

Go Indicated Power given Mechanical Efficiency

IP = \frac{BP}{\frac{η m}{100}}

How to Evaluate Specific Power Output?

Specific Power Output evaluator uses Specific Power Output = Brake Power/Area of Cross Section to evaluate the Specific Power Output, The Specific Power Output of an engine is defined as the ratio of the output power of the engine with its piston area. Specific Power Output is denoted by P_s symbol.

How to evaluate Specific Power Output using this online evaluator? To use this online evaluator for Specific Power Output, enter Brake Power (BP) & Area of Cross Section (A) and hit the calculate button.

FAQs on Specific Power Output

What is the formula to find Specific Power Output?

The formula of Specific Power Output is expressed as Specific Power Output = Brake Power/Area of Cross Section. Here is an example- 0.183333 = 550/0.003.

How to calculate Specific Power Output?

With Brake Power (BP) & Area of Cross Section (A) we can find Specific Power Output using the formula - Specific Power Output = Brake Power/Area of Cross Section.

Can the Specific Power Output be negative?

No, the Specific Power Output, measured in Power cannot be negative.

Which unit is used to measure Specific Power Output?

Specific Power Output is usually measured using the Kilowatt[kW] for Power. Watt[kW], Milliwatt[kW], Microwatt[kW] are the few other units in which Specific Power Output can be measured.

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Specific Power Output Formula

Specific Power Output Example

Specific Power Output Solution

Specific Power Output Formula Elements

Other formulas in Important Formulas of Engine Dynamics category

How to Evaluate Specific Power Output?

FAQs on Specific Power Output

Variable Name