Length of crank pin of centre crankshaft for max torque given allowable bearing pressure Calculator

✖Force on connecting rod is the force acting on the connecting rod of an IC Engine during operation.ⓘ Force on connecting rod [P_cr]			+10% -10%
✖Diameter of crank pin is the diameter of the crank pin used in connecting the connecting rod with the crank.ⓘ Diameter of Crank Pin [d_c]			+10% -10%
✖Bearing Pressure in Crank Pin is the compressive force acting on the contact area between two components of crank pin and bushing having no relative motion between them.ⓘ Bearing Pressure in Crank Pin [P_bPin]			+10% -10%

✖Length of Crank Pin is the size of the crankpin from one end to the other and tells how long is the crankpin.ⓘ Length of crank pin of centre crankshaft for max torque given allowable bearing pressure [l_c]

⎘ Copy

👎

Formula

✖

Length of crank pin of centre crankshaft for max torque given allowable bearing pressure

Formula

`"l"_{"c"} = ("P"_{"cr"})/("d"_{"c"}*"P"_{"bPin"})`

Example

`"43.04348mm"=("19800N")/("50mm"*"9.2N/mm²")`

Calculator

LaTeX

Reset

👍

Download IC Engine Formula PDF PDF Image

Length of crank pin of centre crankshaft for max torque given allowable bearing pressure Solution

STEP 0: Pre-Calculation Summary

Formula Used

Length of Crank Pin = (Force on connecting rod)/(Diameter of Crank Pin*Bearing Pressure in Crank Pin)
l_c = (P_cr)/(d_c*P_bPin)
This formula uses 4 Variables

Variables Used

Length of Crank Pin - (Measured in Meter) - Length of Crank Pin is the size of the crankpin from one end to the other and tells how long is the crankpin.
Force on connecting rod - (Measured in Newton) - Force on connecting rod is the force acting on the connecting rod of an IC Engine during operation.
Diameter of Crank Pin - (Measured in Meter) - Diameter of crank pin is the diameter of the crank pin used in connecting the connecting rod with the crank.
Bearing Pressure in Crank Pin - (Measured in Pascal) - Bearing Pressure in Crank Pin is the compressive force acting on the contact area between two components of crank pin and bushing having no relative motion between them.

STEP 1: Convert Input(s) to Base Unit

Force on connecting rod: 19800 Newton --> 19800 Newton No Conversion Required
Diameter of Crank Pin: 50 Millimeter --> 0.05 Meter (Check conversion here)
Bearing Pressure in Crank Pin: 9.2 Newton per Square Millimeter --> 9200000 Pascal (Check conversion here)

STEP 2: Evaluate Formula

Substituting Input Values in Formula

l_c = (P_cr)/(d_c*P_bPin) --> (19800)/(0.05*9200000)

Evaluating ... ...

l_c = 0.0430434782608696

STEP 3: Convert Result to Output's Unit

0.0430434782608696 Meter -->43.0434782608696 Millimeter (Check conversion here)

FINAL ANSWER

43.0434782608696 ≈ 43.04348 Millimeter <-- Length of Crank Pin

(Calculation completed in 00.004 seconds)

You are here -

Home » Physics » IC Engine » Design of IC Engine Components » Crankshaft » Design of Centre Crankshaft » Design of Crank Pin at Angle of Maximum Torque » Length of crank pin of centre crankshaft for max torque given allowable bearing pressure

Credits

Created by Saurabh Patil

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

Saurabh Patil has created this Calculator and 700+ more calculators!

Verified by Anshika Arya

National Institute Of Technology (NIT), Hamirpur

Anshika Arya has verified this Calculator and 2500+ more calculators!

< 8 Design of Crank Pin at Angle of Maximum Torque Calculators

Diameter of crank pin of centre crankshaft for max torque

Go Diameter of Crank Pin = ((16/(pi*Shear stress in central plane of crank pin))*sqrt((Vertical Reaction at Bearing 1 due to Radial Force*Centre Crankshaft Bearing1 Gap from CrankPinCentre)^2+(Horizontal Force at Bearing1 by Tangential Force*Distance between crank pin and crankshaft)^2))^(1/3)

Shear stress in crankpin of centre crankshaft for max torque

Go Shear stress in central plane of crank pin = (16/(pi*Diameter of Crank Pin^3))*sqrt((Vertical Reaction at Bearing 1 due to Radial Force*Centre Crankshaft Bearing1 Gap from CrankPinCentre)^2+(Horizontal Force at Bearing1 by Tangential Force*Distance between crank pin and crankshaft)^2)

Diameter of crank pin of centre crankshaft for max torque given bending and torsional moment

Go Diameter of Crank Pin = ((16/(pi*Shear stress in central plane of crank pin))*sqrt((Bending Moment at central plane of crankpin^2)+(Torsional Moment at central plane of crankpin^2)))^(1/3)

Shear stress in crankpin of centre crankshaft for max torque given bending and torsional moment

Go Shear stress in central plane of crank pin = (16/(pi*Diameter of Crank Pin^3))*sqrt((Bending Moment at central plane of crankpin^2)+(Torsional Moment at central plane of crankpin^2))

Bending moment at central plane of crank pin of centre crankshaft at max torque

Go Bending Moment at central plane of crankpin = Vertical Reaction at Bearing 1 due to Radial Force*Centre Crankshaft Bearing1 Gap from CrankPinCentre

Torsional moment at central plane of crank pin of centre crankshaft at max torque

Go Torsional Moment at central plane of crankpin = Horizontal Force at Bearing1 by Tangential Force*Distance between crank pin and crankshaft

Length of crank pin of centre crankshaft for max torque given allowable bearing pressure

Go Length of Crank Pin = (Force on connecting rod)/(Diameter of Crank Pin*Bearing Pressure in Crank Pin)

Bearing pressure at crank pin bush of centre crankshaft for max torque

Go Bearing Pressure in Crank Pin = Force on connecting rod/(Diameter of Crank Pin*Length of Crank Pin)

Length of crank pin of centre crankshaft for max torque given allowable bearing pressure Formula

Length of Crank Pin = (Force on connecting rod)/(Diameter of Crank Pin*Bearing Pressure in Crank Pin)
l_c = (P_cr)/(d_c*P_bPin)

Details about Crankshaft used in Internal combustion Engine

In a multi-cylinder engine more complex engine crankshaft is used while in a small engine simple design is sufficient. The flywheel or crankshaft pulley is mounted on the crank to store the generated energy and to use for further work. A flywheel will also reduce the pulsation characteristic of the four-stroke engine. For the smooth and vibration-free running of the engine, the crankshaft is mounted in Main Bearing. Engine Bearings quantity depends upon various factors like the design of an engine, the number of cylinders, the design of crankshaft, etc. But there are always at least two such bearings, one at the drive end and the other at the non-drive end are used. In general, the crankshaft of a four-cylinder engine has three main journals, four crankpins, four counterweights, and two crank webs. The counterweight reduces the bending load on the crankshaft and also helps the engine not to shake when the crank mechanism is rotating. Crankshaft balancing mostly depends on counterweights.

How to Calculate Length of crank pin of centre crankshaft for max torque given allowable bearing pressure?

Length of crank pin of centre crankshaft for max torque given allowable bearing pressure calculator uses Length of Crank Pin = (Force on connecting rod)/(Diameter of Crank Pin*Bearing Pressure in Crank Pin) to calculate the Length of Crank Pin, Length of crank pin of centre crankshaft for max torque given allowable bearing pressure is the total length of the crank pin in the crankpin-connecting rod bush when the center crankshaft is designed for maximum torsional moment. Length of Crank Pin is denoted by l_c symbol.

How to calculate Length of crank pin of centre crankshaft for max torque given allowable bearing pressure using this online calculator? To use this online calculator for Length of crank pin of centre crankshaft for max torque given allowable bearing pressure, enter Force on connecting rod (P_cr), Diameter of Crank Pin (d_c) & Bearing Pressure in Crank Pin (P_bPin) and hit the calculate button. Here is how the Length of crank pin of centre crankshaft for max torque given allowable bearing pressure calculation can be explained with given input values -> 41250 = (19800)/(0.05*9200000).

FAQ

What is Length of crank pin of centre crankshaft for max torque given allowable bearing pressure?

Length of crank pin of centre crankshaft for max torque given allowable bearing pressure is the total length of the crank pin in the crankpin-connecting rod bush when the center crankshaft is designed for maximum torsional moment and is represented as l_c = (P_cr)/(d_c*P_bPin) or Length of Crank Pin = (Force on connecting rod)/(Diameter of Crank Pin*Bearing Pressure in Crank Pin). Force on connecting rod is the force acting on the connecting rod of an IC Engine during operation, Diameter of crank pin is the diameter of the crank pin used in connecting the connecting rod with the crank & Bearing Pressure in Crank Pin is the compressive force acting on the contact area between two components of crank pin and bushing having no relative motion between them.

How to calculate Length of crank pin of centre crankshaft for max torque given allowable bearing pressure?

Length of crank pin of centre crankshaft for max torque given allowable bearing pressure is the total length of the crank pin in the crankpin-connecting rod bush when the center crankshaft is designed for maximum torsional moment is calculated using Length of Crank Pin = (Force on connecting rod)/(Diameter of Crank Pin*Bearing Pressure in Crank Pin). To calculate Length of crank pin of centre crankshaft for max torque given allowable bearing pressure, you need Force on connecting rod (P_cr), Diameter of Crank Pin (d_c) & Bearing Pressure in Crank Pin (P_bPin). With our tool, you need to enter the respective value for Force on connecting rod, Diameter of Crank Pin & Bearing Pressure in Crank Pin and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.

Home

FREE PDFs

🔍 Search