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Length of Piston Skirt given Allowable Bearing Pressure Formula

GoMaximum Length of Piston Skirt Formula

GoMinimum Length of Piston Skirt Formula

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Length of Piston Skirt is the total length of a piston skirt used for bearing side thrust. Check FAQs

l s = μ \cdot π \cdot D i \cdot \frac{p max}{4 \cdot P b}

l_s - Length of Piston Skirt?μ - Coefficient of Friction for Piston Skirt?D_i - Diameter of Cylinder Bore?p_max - Maximum Gas Pressure Inside Cylinder?P_b - Bearing Pressure for Piston Skirt?π - Archimedes' constant?

Length of Piston Skirt given Allowable Bearing Pressure Example

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Here is how the Length of Piston Skirt given Allowable Bearing Pressure equation looks like with Values.

Here is how the Length of Piston Skirt given Allowable Bearing Pressure equation looks like with Units.

Here is how the Length of Piston Skirt given Allowable Bearing Pressure equation looks like.

50.6079 = 0.1 \cdot 3.1416 \cdot 180 \cdot \frac{1.4319}{4 \cdot 0.4}

50.6079mm = 0.1 \cdot 3.1416 \cdot 180mm \cdot \frac{1.4319N/mm²}{4 \cdot 0.4N/mm²}

50.6079 = 0.1 \cdot 3.1416 \cdot 180 \cdot \frac{1.4319}{4 \cdot 0.4}

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Length of Piston Skirt given Allowable Bearing Pressure Solution

Follow our step by step solution on how to calculate Length of Piston Skirt given Allowable Bearing Pressure?

FIRST Step Consider the formula

l s = μ \cdot π \cdot D i \cdot \frac{p max}{4 \cdot P b}

Next Step Substitute values of Variables

∴

l s = 0.1 \cdot π \cdot 180mm \cdot \frac{1.4319N/mm²}{4 \cdot 0.4N/mm²}

Next Step Substitute values of Constants

∴

l s = 0.1 \cdot 3.1416 \cdot 180mm \cdot \frac{1.4319N/mm²}{4 \cdot 0.4N/mm²}

Next Step Convert Units

∴

l s = 0.1 \cdot 3.1416 \cdot 0.18m \cdot \frac{1.4E+6Pa}{4 \cdot 400000Pa}

Next Step Prepare to Evaluate

∴

l s = 0.1 \cdot 3.1416 \cdot 0.18 \cdot \frac{1.4E+6}{4 \cdot 400000}

Next Step Evaluate

∴

l s = 0.0506079064748204m

Next Step Convert to Output's Unit

∴

l s = 50.6079064748204mm

LAST Step Rounding Answer

∴

l s = 50.6079mm

Length of Piston Skirt given Allowable Bearing Pressure Formula Elements

Variables

Constants

Length of Piston Skirt

Length of Piston Skirt is the total length of a piston skirt used for bearing side thrust.

Symbol: l_s

Measurement: LengthUnit: mm

Note: Value should be greater than 0.

Formulas to find Length of Piston Skirt

Coefficient of Friction for Piston Skirt

Coefficient of Friction for Piston Skirt is the ratio of the side thrust on the liner to the maximum gas load on the piston.

Symbol: μ

Measurement: NAUnit: Unitless

Note: Value should be between 0 to 1.

Formulas to find Coefficient of Friction for Piston Skirt

Diameter of Cylinder Bore

Diameter of Cylinder Bore is the internal surface diameter of an engine cylinder.

Symbol: D_i

Measurement: LengthUnit: mm

Note: Value should be greater than 0.

Formulas to find Diameter of Cylinder Bore

Maximum Gas Pressure Inside Cylinder

Maximum Gas Pressure Inside Cylinder is the maximum amount of pressure that can be generated inside the cylinder.

Symbol: p_max

Measurement: PressureUnit: N/mm²

Note: Value should be greater than 0.

Formulas to find Maximum Gas Pressure Inside Cylinder

Bearing Pressure for Piston Skirt

Bearing Pressure for Piston Skirt is the compressive force acting on the contact area between two components having relative motion between them.

Symbol: P_b

Measurement: PressureUnit: N/mm²

Note: Value should be greater than 0.

Formulas to find Bearing Pressure for Piston Skirt

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 to find Length of Piston Skirt

Go Maximum Length of Piston Skirt

l s = 0.8 \cdot D i

Go Minimum Length of Piston Skirt

l s = 0.65 \cdot D i

Other formulas in Piston Skirt category

Go Inner Diameter of Piston Pin

d i = 0.6 \cdot d o

Go Length of Piston Pin used in Connecting Rod

l 1 = 0.45 \cdot D i

Go Maximum Bending Moment on Piston Pin

M b = F P \cdot \frac{D i}{8}

Go Maximum Bending Stress in Piston Pin

σ max = 4 \cdot F P \cdot D i \cdot \frac{d o}{π \cdot ({d o}^{4} - {d i}^{4})}

How to Evaluate Length of Piston Skirt given Allowable Bearing Pressure?

Length of Piston Skirt given Allowable Bearing Pressure evaluator uses Length of Piston Skirt = Coefficient of Friction for Piston Skirt*pi*Diameter of Cylinder Bore*Maximum Gas Pressure Inside Cylinder/(4*Bearing Pressure for Piston Skirt) to evaluate the Length of Piston Skirt, Length of Piston Skirt given Allowable Bearing Pressure is the length of the piston skirt, the cylindrical portion of the piston between the last scrapper ring and the open-end. Length of Piston Skirt is denoted by l_s symbol.

How to evaluate Length of Piston Skirt given Allowable Bearing Pressure using this online evaluator? To use this online evaluator for Length of Piston Skirt given Allowable Bearing Pressure, enter Coefficient of Friction for Piston Skirt (μ), Diameter of Cylinder Bore (D_i), Maximum Gas Pressure Inside Cylinder (p_max) & Bearing Pressure for Piston Skirt (P_b) and hit the calculate button.

FAQs on Length of Piston Skirt given Allowable Bearing Pressure

What is the formula to find Length of Piston Skirt given Allowable Bearing Pressure?

The formula of Length of Piston Skirt given Allowable Bearing Pressure is expressed as Length of Piston Skirt = Coefficient of Friction for Piston Skirt*pi*Diameter of Cylinder Bore*Maximum Gas Pressure Inside Cylinder/(4*Bearing Pressure for Piston Skirt). Here is an example- 50607.91 = 0.1*pi*0.18*1431910.84/(4*400000).

How to calculate Length of Piston Skirt given Allowable Bearing Pressure?

With Coefficient of Friction for Piston Skirt (μ), Diameter of Cylinder Bore (D_i), Maximum Gas Pressure Inside Cylinder (p_max) & Bearing Pressure for Piston Skirt (P_b) we can find Length of Piston Skirt given Allowable Bearing Pressure using the formula - Length of Piston Skirt = Coefficient of Friction for Piston Skirt*pi*Diameter of Cylinder Bore*Maximum Gas Pressure Inside Cylinder/(4*Bearing Pressure for Piston Skirt). This formula also uses Archimedes' constant .

What are the other ways to Calculate Length of Piston Skirt?

Here are the different ways to Calculate Length of Piston Skirt-

Length of Piston Skirt=0.8*Diameter of Cylinder Bore
Length of Piston Skirt=0.65*Diameter of Cylinder Bore

Can the Length of Piston Skirt given Allowable Bearing Pressure be negative?

No, the Length of Piston Skirt given Allowable Bearing Pressure, measured in Length cannot be negative.

Which unit is used to measure Length of Piston Skirt given Allowable Bearing Pressure?

Length of Piston Skirt given Allowable Bearing Pressure is usually measured using the Millimeter[mm] for Length. Meter[mm], Kilometer[mm], Decimeter[mm] are the few other units in which Length of Piston Skirt given Allowable Bearing Pressure can be measured.

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Length of Piston Skirt given Allowable Bearing Pressure Formula

​GoMaximum Length of Piston Skirt Formula

​GoMinimum Length of Piston Skirt Formula

Length of Piston Skirt given Allowable Bearing Pressure Example

Length of Piston Skirt given Allowable Bearing Pressure Solution

Length of Piston Skirt given Allowable Bearing Pressure Formula Elements

Other Formulas to find Length of Piston Skirt

Other formulas in Piston Skirt category

How to Evaluate Length of Piston Skirt given Allowable Bearing Pressure?

FAQs on Length of Piston Skirt given Allowable Bearing Pressure

Variable Name

GoMaximum Length of Piston Skirt Formula

GoMinimum Length of Piston Skirt Formula