Mean piston speed Calculator

✖Stroke Length is the distance travelled by the piston during each cycle.ⓘ Stroke Length [L]			+10% -10%
✖Engine Speed is the speed at which the crankshaft of the engine rotates.ⓘ Engine Speed [N]			+10% -10%

✖Mean Piston Speed is the average speed of the piston over one engine revolution.ⓘ Mean piston speed [s_p]

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Formula

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Mean piston speed

Formula

s p = 2 \cdot L \cdot N

Example

73.72271 m/s = 2 \cdot 8.8 cm \cdot 4000 rev/min

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Mean piston speed Solution

STEP 0: Pre-Calculation Summary

Formula Used

Mean Piston Speed = 2*Stroke Length*Engine Speed
s_p = 2*L*N
This formula uses 3 Variables

Variables Used

Mean Piston Speed - (Measured in Meter per Second) - Mean Piston Speed is the average speed of the piston over one engine revolution.
Stroke Length - (Measured in Meter) - Stroke Length is the distance travelled by the piston during each cycle.
Engine Speed - (Measured in Radian per Second) - Engine Speed is the speed at which the crankshaft of the engine rotates.

STEP 1: Convert Input(s) to Base Unit

Stroke Length: 8.8 Centimeter --> 0.088 Meter (Check conversion here)
Engine Speed: 4000 Revolution per Minute --> 418.879020457308 Radian per Second (Check conversion here)

STEP 2: Evaluate Formula

Substituting Input Values in Formula

s_p = 2*L*N --> 2*0.088*418.879020457308

Evaluating ... ...

s_p = 73.7227076004862

STEP 3: Convert Result to Output's Unit

73.7227076004862 Meter per Second --> No Conversion Required

FINAL ANSWER

73.7227076004862 ≈ 73.72271 Meter per Second <-- Mean Piston Speed

(Calculation completed in 00.004 seconds)

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Credits

Created by Aditya Prakash Gautam

Indian Institute of Technology (IIT (ISM) ), Dhanbad, Jharkhand

Aditya Prakash Gautam has created this Calculator and 25+ more calculators!

Verified by Anshika Arya

National Institute Of Technology (NIT), Hamirpur

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< Important Formulas of Engine Dynamics Calculators

Brake Power given Mean Effective Pressure

Go Brake Power = (Brake Mean Effective Pressure*Stroke Length*Area of Cross Section*(Engine Speed))

Beale Number

Go Beale Number = Engine Power/(Average Gas Pressure*Piston Swept Volume*Engine Frequency)

Brake specific fuel consumption

Go Brake Specific Fuel Consumption = Fuel Consumption in IC engine/Brake Power

Brake Power given Mechanical Efficiency

Go Brake Power = (Mechanical Efficiency/100)*Indicated Power

< Characteristics and Operational Metrics Calculators

Beale Number

Go Beale Number = Engine Power/(Average Gas Pressure*Piston Swept Volume*Engine Frequency)

Swept Volume

Go Swept Volume = (((pi/4)*Inner Diameter of Cylinder^2)*Stroke Length)

Mean piston speed

Go Mean Piston Speed = 2*Stroke Length*Engine Speed

Friction Power

Go Friction Power = Indicated Power-Brake Power

Mean piston speed Formula

Mean Piston Speed = 2*Stroke Length*Engine Speed
s_p = 2*L*N

What is the purpose of Mean Piston Speed?

The Mean Piston Speed is the piston speed averaged over one engine revolution. A shorter stroke enables the engine to produce a higher rotating speed at a constant mean piston speed but also increases the speed at which the piston must travel in each revolution.

How to Calculate Mean piston speed?

Mean piston speed calculator uses Mean Piston Speed = 2*Stroke Length*Engine Speed to calculate the Mean Piston Speed, The Mean Piston Speed formula is defined as the distance traveled by a piston in a specified amount of time. Mean Piston Speed is denoted by s_p symbol.

How to calculate Mean piston speed using this online calculator? To use this online calculator for Mean piston speed, enter Stroke Length (L) & Engine Speed (N) and hit the calculate button. Here is how the Mean piston speed calculation can be explained with given input values -> 73.72271 = 2*0.088*418.879020457308.

FAQ

What is Mean piston speed?

The Mean Piston Speed formula is defined as the distance traveled by a piston in a specified amount of time and is represented as s_p = 2*L*N or Mean Piston Speed = 2*Stroke Length*Engine Speed. Stroke Length is the distance travelled by the piston during each cycle & Engine Speed is the speed at which the crankshaft of the engine rotates.

How to calculate Mean piston speed?

The Mean Piston Speed formula is defined as the distance traveled by a piston in a specified amount of time is calculated using Mean Piston Speed = 2*Stroke Length*Engine Speed. To calculate Mean piston speed, you need Stroke Length (L) & Engine Speed (N). With our tool, you need to enter the respective value for Stroke Length & Engine Speed 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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