Outer Diameter of Piston Pin Calculator

✖Diameter of Cylinder Bore is the internal surface diameter of an engine cylinder.ⓘ Diameter of Cylinder Bore [D_i]			+10% -10%
✖Maximum Gas Pressure Inside Cylinder is the maximum amount of pressure that can be generated inside the cylinder.ⓘ Maximum Gas Pressure Inside Cylinder [p_max]			+10% -10%
✖Bearing Pressure of CrankPin Bush is the bearing pressure at the crank pin bearing of the big end of the connecting rod.ⓘ Bearing Pressure of CrankPin Bush [p_bc]			+10% -10%
✖Length of Piston Pin in Connecting Rod is the length of the part of piston pin inside the bush of small end of the connecting rod.ⓘ Length of Piston Pin in Connecting Rod [l₁]			+10% -10%

✖Outer Diameter of Piston Pin is the diameter of the outer surface of a piston pin.ⓘ Outer Diameter of Piston Pin [d_o]

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Outer Diameter of Piston Pin Solution

STEP 0: Pre-Calculation Summary

Formula Used

Outer Diameter of Piston Pin = pi*Diameter of Cylinder Bore^2*Maximum Gas Pressure Inside Cylinder/(4*Bearing Pressure of CrankPin Bush*Length of Piston Pin in Connecting Rod)
d_o = pi*D_i^2*p_max/(4*p_bc*l₁)
This formula uses 1 Constants, 5 Variables

Constants Used

pi - Archimedes' constant Value Taken As 3.14159265358979323846264338327950288

Variables Used

Outer Diameter of Piston Pin - (Measured in Meter) - Outer Diameter of Piston Pin is the diameter of the outer surface of a piston pin.
Diameter of Cylinder Bore - (Measured in Meter) - Diameter of Cylinder Bore is the internal surface diameter of an engine cylinder.
Maximum Gas Pressure Inside Cylinder - (Measured in Pascal) - Maximum Gas Pressure Inside Cylinder is the maximum amount of pressure that can be generated inside the cylinder.
Bearing Pressure of CrankPin Bush - (Measured in Pascal) - Bearing Pressure of CrankPin Bush is the bearing pressure at the crank pin bearing of the big end of the connecting rod.
Length of Piston Pin in Connecting Rod - (Measured in Meter) - Length of Piston Pin in Connecting Rod is the length of the part of piston pin inside the bush of small end of the connecting rod.

STEP 1: Convert Input(s) to Base Unit

Diameter of Cylinder Bore: 180 Millimeter --> 0.18 Meter (Check conversion here)
Maximum Gas Pressure Inside Cylinder: 1.43191084 Newton per Square Millimeter --> 1431910.84 Pascal (Check conversion here)
Bearing Pressure of CrankPin Bush: 7.59 Newton per Square Millimeter --> 7590000 Pascal (Check conversion here)
Length of Piston Pin in Connecting Rod: 81 Millimeter --> 0.081 Meter (Check conversion here)

STEP 2: Evaluate Formula

Substituting Input Values in Formula

d_o = pi*D_i^2*p_max/(4*p_bc*l₁) --> pi*0.18^2*1431910.84/(4*7590000*0.081)

Evaluating ... ...

d_o = 0.0592685187818128

STEP 3: Convert Result to Output's Unit

0.0592685187818128 Meter -->59.2685187818128 Millimeter (Check conversion here)

FINAL ANSWER

59.2685187818128 ≈ 59.26852 Millimeter <-- Outer Diameter of Piston Pin

(Calculation completed in 00.011 seconds)

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Home » Physics » IC Engine » Design of IC Engine Components » Piston » Mechanical » Piston Pin » Outer Diameter of Piston Pin

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Created by Saurabh Patil

Shri Govindram Seksaria Institute of Technology and Science (SGSITS ), Indore

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< Piston Pin Calculators

Outer Diameter of Piston Pin

LaTeX Go Outer Diameter of Piston Pin = pi*Diameter of Cylinder Bore^2*Maximum Gas Pressure Inside Cylinder/(4*Bearing Pressure of CrankPin Bush*Length of Piston Pin in Connecting Rod)

Resisting Bearing Force by Piston Pin

LaTeX Go Resistive Force by Piston Pin = Bearing Pressure of CrankPin Bush*Outer Diameter of Piston Pin*Length of Piston Pin in Connecting Rod

Length of Piston Pin used in Connecting Rod

LaTeX Go Length of Piston Pin in Connecting Rod = 0.45*Diameter of Cylinder Bore

Outer Diameter of Piston Pin given its Inner Diameter

LaTeX Go Outer Diameter of Piston Pin = Inner Diameter of Piston Pin/0.6

< Important Formulas of Piston Calculators

Maximum Bending Stress in Piston Pin

LaTeX Go Maximum Bending Stress in Piston Pin = 4*Force Exerted on Piston*Diameter of Cylinder Bore*Outer Diameter of Piston Pin/(pi*(Outer Diameter of Piston Pin^4-Inner Diameter of Piston Pin^4))

Maximum Bending Moment on Piston Pin

LaTeX Go Bending Moment = Force Exerted on Piston*Diameter of Cylinder Bore/8

Length of Piston Pin used in Connecting Rod

LaTeX Go Length of Piston Pin in Connecting Rod = 0.45*Diameter of Cylinder Bore

Inner Diameter of Piston Pin

LaTeX Go Inner Diameter of Piston Pin = 0.6*Outer Diameter of Piston Pin

Outer Diameter of Piston Pin Formula

LaTeX Go

Requirements of a Piston Pin

1. The pin must have sufficient strength and flexibility to withstand the load without damage.
2. It requires high surface hardness to achieve favorable wear behavior.
3. These pins must achieve high surface quality and size accuracy for optimum fit with their sliding parts, piston, and connecting rod.
4. To keep the inertia forces to a minimum, these pins must have a low weight.
5. The rigidity of the pin should match the design of the piston, so as to avoid overloading the piston.
6. Despite from above, the pin construction should be as simple and thus economical as possible.

How to Calculate Outer Diameter of Piston Pin?

Outer Diameter of Piston Pin calculator uses Outer Diameter of Piston Pin = pi*Diameter of Cylinder Bore^2*Maximum Gas Pressure Inside Cylinder/(4*Bearing Pressure of CrankPin Bush*Length of Piston Pin in Connecting Rod) to calculate the Outer Diameter of Piston Pin, Outer Diameter of Piston Pin is the diameter of the outer surface of a piston pin. Outer Diameter of Piston Pin is denoted by d_o symbol.

How to calculate Outer Diameter of Piston Pin using this online calculator? To use this online calculator for Outer Diameter of Piston Pin, enter Diameter of Cylinder Bore (D_i), Maximum Gas Pressure Inside Cylinder (p_max), Bearing Pressure of CrankPin Bush (p_bc) & Length of Piston Pin in Connecting Rod (l₁) and hit the calculate button. Here is how the Outer Diameter of Piston Pin calculation can be explained with given input values -> 55500 = pi*0.18^2*1431910.84/(4*7590000*0.081).

FAQ

What is Outer Diameter of Piston Pin?

Outer Diameter of Piston Pin is the diameter of the outer surface of a piston pin and is represented as d_o = pi*D_i^2*p_max/(4*p_bc*l₁) or Outer Diameter of Piston Pin = pi*Diameter of Cylinder Bore^2*Maximum Gas Pressure Inside Cylinder/(4*Bearing Pressure of CrankPin Bush*Length of Piston Pin in Connecting Rod). Diameter of Cylinder Bore is the internal surface diameter of an engine cylinder, Maximum Gas Pressure Inside Cylinder is the maximum amount of pressure that can be generated inside the cylinder, Bearing Pressure of CrankPin Bush is the bearing pressure at the crank pin bearing of the big end of the connecting rod & Length of Piston Pin in Connecting Rod is the length of the part of piston pin inside the bush of small end of the connecting rod.

How to calculate Outer Diameter of Piston Pin?

Outer Diameter of Piston Pin is the diameter of the outer surface of a piston pin is calculated using Outer Diameter of Piston Pin = pi*Diameter of Cylinder Bore^2*Maximum Gas Pressure Inside Cylinder/(4*Bearing Pressure of CrankPin Bush*Length of Piston Pin in Connecting Rod). To calculate Outer Diameter of Piston Pin, you need Diameter of Cylinder Bore (D_i), Maximum Gas Pressure Inside Cylinder (p_max), Bearing Pressure of CrankPin Bush (p_bc) & Length of Piston Pin in Connecting Rod (l₁). With our tool, you need to enter the respective value for Diameter of Cylinder Bore, Maximum Gas Pressure Inside Cylinder, Bearing Pressure of CrankPin Bush & Length of Piston Pin in Connecting Rod and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.

How many ways are there to calculate Outer Diameter of Piston Pin?

In this formula, Outer Diameter of Piston Pin uses Diameter of Cylinder Bore, Maximum Gas Pressure Inside Cylinder, Bearing Pressure of CrankPin Bush & Length of Piston Pin in Connecting Rod. We can use 1 other way(s) to calculate the same, which is/are as follows -

Outer Diameter of Piston Pin = Inner Diameter of Piston Pin/0.6

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