Side Thrust on Piston Skirt Calculator

✖Bearing Pressure for Piston Skirt is the compressive force acting on the contact area between two components having relative motion between them.ⓘ Bearing Pressure for Piston Skirt [P_b]			+10% -10%
✖Diameter of Cylinder Bore is the internal surface diameter of an engine cylinder.ⓘ Diameter of Cylinder Bore [D_i]			+10% -10%
✖Length of piston skirt is the total length of a piston skirt used for bearing side thrust.ⓘ Length of Piston Skirt [l_s]			+10% -10%

✖Side thrust on piston is the perpendicular force acting onto the piston perpendicular to the piston central axis.ⓘ Side Thrust on Piston Skirt [F_a]

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Formula

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Side Thrust on Piston Skirt

Formula

`"F"_{"a"} = "P"_{"b"}*"D"_{"i"}*"l"_{"s"}`

Example

`"11.52kN"="0.4N/mm²"*"180mm"*"160mm"`

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Side Thrust on Piston Skirt Solution

STEP 0: Pre-Calculation Summary

Formula Used

Side thrust on piston = Bearing Pressure for Piston Skirt*Diameter of Cylinder Bore*Length of Piston Skirt
F_a = P_b*D_i*l_s
This formula uses 4 Variables

Variables Used

Side thrust on piston - (Measured in Newton) - Side thrust on piston is the perpendicular force acting onto the piston perpendicular to the piston central axis.
Bearing Pressure for Piston Skirt - (Measured in Pascal) - Bearing Pressure for Piston Skirt is the compressive force acting on the contact area between two components having relative motion between them.
Diameter of Cylinder Bore - (Measured in Meter) - Diameter of Cylinder Bore is the internal surface diameter of an engine cylinder.
Length of Piston Skirt - (Measured in Meter) - Length of piston skirt is the total length of a piston skirt used for bearing side thrust.

STEP 1: Convert Input(s) to Base Unit

Bearing Pressure for Piston Skirt: 0.4 Newton per Square Millimeter --> 400000 Pascal (Check conversion here)
Diameter of Cylinder Bore: 180 Millimeter --> 0.18 Meter (Check conversion here)
Length of Piston Skirt: 160 Millimeter --> 0.16 Meter (Check conversion here)

STEP 2: Evaluate Formula

Substituting Input Values in Formula

F_a = P_b*D_i*l_s --> 400000*0.18*0.16

Evaluating ... ...

F_a = 11520

STEP 3: Convert Result to Output's Unit

11520 Newton -->11.52 Kilonewton (Check conversion here)

FINAL ANSWER

11.52 Kilonewton <-- Side thrust on piston

(Calculation completed in 00.020 seconds)

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Created by Saurabh Patil

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

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< 8 Piston Skirt Calculators

Length of Piston Skirt given Allowable Bearing Pressure

Go 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)

Side Thrust on Piston

Go Side thrust on piston = Coefficient of Friction for Piston Skirt*pi*Diameter of Cylinder Bore^2*Maximum Gas Pressure inside Cylinder/4

Length of Piston Skirt given Side Thrust

Go Length of Piston Skirt = Side thrust on piston/(Bearing Pressure for Piston Skirt*Diameter of Cylinder Bore)

Side Thrust on Piston Skirt

Go Side thrust on piston = Bearing Pressure for Piston Skirt*Diameter of Cylinder Bore*Length of Piston Skirt

Total Length of Piston

Go Length of Piston = Width of Top Land+Length of Ring Section of Piston+Length of Piston Skirt

Minimum Length of Piston Skirt

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

Maximum Length of Piston Skirt

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

Maximum Total Length of Piston

Go Length of Piston = 1.5*Diameter of Cylinder Bore

Side Thrust on Piston Skirt Formula

Side thrust on piston = Bearing Pressure for Piston Skirt*Diameter of Cylinder Bore*Length of Piston Skirt
F_a = P_b*D_i*l_s

Piston Skirt

The cylindrical portion of the piston between the last scrapper ring and the open end is called the piston skirt. The piston skirt acts as a bearing surface for the side thrust. The length of the skirt should be such that the bearing pressure due to side thrust is restricted to 0.2 MPa on the projected area. In high-speed engines, the bearing pressure up to 0.5 MPa is allowed to reduce the weight of the reciprocating piston. The maximum side thrust will occur during the expansion stroke

How to Calculate Side Thrust on Piston Skirt?

Side Thrust on Piston Skirt calculator uses Side thrust on piston = Bearing Pressure for Piston Skirt*Diameter of Cylinder Bore*Length of Piston Skirt to calculate the Side thrust on piston, Side thrust on piston skirt is the force acting on the sides of a piston skirt. Side thrust on piston is denoted by F_a symbol.

How to calculate Side Thrust on Piston Skirt using this online calculator? To use this online calculator for Side Thrust on Piston Skirt, enter Bearing Pressure for Piston Skirt (P_b), Diameter of Cylinder Bore (D_i) & Length of Piston Skirt (l_s) and hit the calculate button. Here is how the Side Thrust on Piston Skirt calculation can be explained with given input values -> 0.012864 = 400000*0.18*0.16.

FAQ

What is Side Thrust on Piston Skirt?

Side thrust on piston skirt is the force acting on the sides of a piston skirt and is represented as F_a = P_b*D_i*l_s or Side thrust on piston = Bearing Pressure for Piston Skirt*Diameter of Cylinder Bore*Length of Piston Skirt. Bearing Pressure for Piston Skirt is the compressive force acting on the contact area between two components having relative motion between them, Diameter of Cylinder Bore is the internal surface diameter of an engine cylinder & Length of piston skirt is the total length of a piston skirt used for bearing side thrust.

How to calculate Side Thrust on Piston Skirt?

Side thrust on piston skirt is the force acting on the sides of a piston skirt is calculated using Side thrust on piston = Bearing Pressure for Piston Skirt*Diameter of Cylinder Bore*Length of Piston Skirt. To calculate Side Thrust on Piston Skirt, you need Bearing Pressure for Piston Skirt (P_b), Diameter of Cylinder Bore (D_i) & Length of Piston Skirt (l_s). With our tool, you need to enter the respective value for Bearing Pressure for Piston Skirt, Diameter of Cylinder Bore & Length of Piston Skirt 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 Side thrust on piston?

In this formula, Side thrust on piston uses Bearing Pressure for Piston Skirt, Diameter of Cylinder Bore & Length of Piston Skirt. We can use 1 other way(s) to calculate the same, which is/are as follows -

Side thrust on piston = Coefficient of Friction for Piston Skirt*pi*Diameter of Cylinder Bore^2*Maximum Gas Pressure inside Cylinder/4

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