Wahl Factor for Engine Valve Spring given Mean Coil Diameter and Wire Diameter Calculator

✖Shear Stress in Valve Spring is the stress induced into the spring due to its compression and expansion.ⓘ Shear Stress in Valve Spring [f_s]			+10% -10%
✖Wire Diameter of Valve Spring is the diameter of the wire of a valve spring, which constitutes the coils of the spring.ⓘ Wire Diameter of Valve Spring [d_w]			+10% -10%
✖Spring Index for Valve Spring is the ratio of the mean coil diameter of the spring to the diameter of the spring Wire.ⓘ Spring Index for Valve Spring [C]			+10% -10%
✖Axial Force on Valve Spring is the force acting at the ends of spring trying to compress or expand it in the axial direction.ⓘ Axial Force on Valve Spring [P]			+10% -10%

✖Wahl Factor of Valve Spring is a stress factor used in order to take into account the effect of direct shear and change in coil curvature.ⓘ Wahl Factor for Engine Valve Spring given Mean Coil Diameter and Wire Diameter [K]

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Formula

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Wahl Factor for Engine Valve Spring given Mean Coil Diameter and Wire Diameter

Formula

K = \frac{π \cdot f s \cdot {d w}^{2}}{8 \cdot C \cdot P}

Example

1.3102 = \frac{π \cdot 300 N/mm² \cdot {5.5 mm}^{2}}{8 \cdot 8 \cdot 340 N}

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Wahl Factor for Engine Valve Spring given Mean Coil Diameter and Wire Diameter Solution

STEP 0: Pre-Calculation Summary

Formula Used

Wahl Factor of Valve Spring = (pi*Shear Stress in Valve Spring*Wire Diameter of Valve Spring^2)/(8*Spring Index for Valve Spring*Axial Force on Valve Spring)
K = (pi*f_s*d_w^2)/(8*C*P)
This formula uses 1 Constants, 5 Variables

Constants Used

pi - Archimedes' constant Value Taken As 3.14159265358979323846264338327950288

Variables Used

Wahl Factor of Valve Spring - Wahl Factor of Valve Spring is a stress factor used in order to take into account the effect of direct shear and change in coil curvature.
Shear Stress in Valve Spring - (Measured in Pascal) - Shear Stress in Valve Spring is the stress induced into the spring due to its compression and expansion.
Wire Diameter of Valve Spring - (Measured in Meter) - Wire Diameter of Valve Spring is the diameter of the wire of a valve spring, which constitutes the coils of the spring.
Spring Index for Valve Spring - Spring Index for Valve Spring is the ratio of the mean coil diameter of the spring to the diameter of the spring Wire.
Axial Force on Valve Spring - (Measured in Newton) - Axial Force on Valve Spring is the force acting at the ends of spring trying to compress or expand it in the axial direction.

STEP 1: Convert Input(s) to Base Unit

Shear Stress in Valve Spring: 300 Newton per Square Millimeter --> 300000000 Pascal (Check conversion here)
Wire Diameter of Valve Spring: 5.5 Millimeter --> 0.0055 Meter (Check conversion here)
Spring Index for Valve Spring: 8 --> No Conversion Required
Axial Force on Valve Spring: 340 Newton --> 340 Newton No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

K = (pi*f_s*d_w^2)/(8*C*P) --> (pi*300000000*0.0055^2)/(8*8*340)

Evaluating ... ...

K = 1.31020006118232

STEP 3: Convert Result to Output's Unit

1.31020006118232 --> No Conversion Required

FINAL ANSWER

1.31020006118232 ≈ 1.3102 <-- Wahl Factor of Valve Spring

(Calculation completed in 00.004 seconds)

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Home » Physics » IC Engine » Design of IC Engine Components » Mechanical » Valve Spring » Wahl Factor for Engine Valve Spring given Mean Coil Diameter and Wire Diameter

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< Valve Spring Calculators

Diameter of Wire of Engine Valve Spring

Go Wire Diameter of Valve Spring = sqrt((8*Wahl Factor of Valve Spring*((Initial Spring Force on Valve+Stiffness of Valve Spring*Lift of Valve)*Spring Index for Valve Spring))/(pi*Shear Stress in Valve Spring))

Diameter of Wire of Engine Valve Spring given Torsional Shear Stress in Wire

Go Wire Diameter of Valve Spring = sqrt((8*Wahl Factor of Valve Spring*Axial Force on Valve Spring*Spring Index for Valve Spring)/(pi*Shear Stress in Valve Spring))

Spring Index of Engine Valve Spring given Shear Stress, Maximum Force and Wire Diameter

Go Spring Index for Valve Spring = (pi*Shear Stress in Valve Spring*Wire Diameter of Valve Spring^2)/(8*Wahl Factor of Valve Spring*Axial Force on Valve Spring)

Diameter of Wire of Engine Valve Spring given Mean Coil Diameter

Go Wire Diameter of Valve Spring = Mean Coil Diameter of Valve Spring/8

Wahl Factor for Engine Valve Spring given Mean Coil Diameter and Wire Diameter Formula

Wahl Factor of Valve Spring = (pi*Shear Stress in Valve Spring*Wire Diameter of Valve Spring^2)/(8*Spring Index for Valve Spring*Axial Force on Valve Spring)
K = (pi*f_s*d_w^2)/(8*C*P)

A Helical Spring

The helical spring, a type of spring in which wire is wrapped in a coil that resembles a screw thread, is probably the most commonly used mechanical spring. It can be designed to carry, pull, or push loads. Twisted helical (torsion) springs are used in engine starters and hinges. Helical tension and compression springs have numerous uses, notably automobile suspension systems, gun-recoil mechanisms, and closing valves on engines.

How to Calculate Wahl Factor for Engine Valve Spring given Mean Coil Diameter and Wire Diameter?

Wahl Factor for Engine Valve Spring given Mean Coil Diameter and Wire Diameter calculator uses Wahl Factor of Valve Spring = (pi*Shear Stress in Valve Spring*Wire Diameter of Valve Spring^2)/(8*Spring Index for Valve Spring*Axial Force on Valve Spring) to calculate the Wahl Factor of Valve Spring, The Wahl factor for engine valve spring given mean coil diameter and wire diameter is a stress factor used in order to take into account the effect of direct shear stress and the change in the spring coil curvature. Wahl Factor of Valve Spring is denoted by K symbol.

How to calculate Wahl Factor for Engine Valve Spring given Mean Coil Diameter and Wire Diameter using this online calculator? To use this online calculator for Wahl Factor for Engine Valve Spring given Mean Coil Diameter and Wire Diameter, enter Shear Stress in Valve Spring (f_s), Wire Diameter of Valve Spring (d_w), Spring Index for Valve Spring (C) & Axial Force on Valve Spring (P) and hit the calculate button. Here is how the Wahl Factor for Engine Valve Spring given Mean Coil Diameter and Wire Diameter calculation can be explained with given input values -> 1.3102 = (pi*300000000*0.0055^2)/(8*8*340).

FAQ

What is Wahl Factor for Engine Valve Spring given Mean Coil Diameter and Wire Diameter?

The Wahl factor for engine valve spring given mean coil diameter and wire diameter is a stress factor used in order to take into account the effect of direct shear stress and the change in the spring coil curvature and is represented as K = (pi*f_s*d_w^2)/(8*C*P) or Wahl Factor of Valve Spring = (pi*Shear Stress in Valve Spring*Wire Diameter of Valve Spring^2)/(8*Spring Index for Valve Spring*Axial Force on Valve Spring). Shear Stress in Valve Spring is the stress induced into the spring due to its compression and expansion, Wire Diameter of Valve Spring is the diameter of the wire of a valve spring, which constitutes the coils of the spring, Spring Index for Valve Spring is the ratio of the mean coil diameter of the spring to the diameter of the spring Wire & Axial Force on Valve Spring is the force acting at the ends of spring trying to compress or expand it in the axial direction.

How to calculate Wahl Factor for Engine Valve Spring given Mean Coil Diameter and Wire Diameter?

The Wahl factor for engine valve spring given mean coil diameter and wire diameter is a stress factor used in order to take into account the effect of direct shear stress and the change in the spring coil curvature is calculated using Wahl Factor of Valve Spring = (pi*Shear Stress in Valve Spring*Wire Diameter of Valve Spring^2)/(8*Spring Index for Valve Spring*Axial Force on Valve Spring). To calculate Wahl Factor for Engine Valve Spring given Mean Coil Diameter and Wire Diameter, you need Shear Stress in Valve Spring (f_s), Wire Diameter of Valve Spring (d_w), Spring Index for Valve Spring (C) & Axial Force on Valve Spring (P). With our tool, you need to enter the respective value for Shear Stress in Valve Spring, Wire Diameter of Valve Spring, Spring Index for Valve Spring & Axial Force on Valve Spring 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 Wahl Factor of Valve Spring?

In this formula, Wahl Factor of Valve Spring uses Shear Stress in Valve Spring, Wire Diameter of Valve Spring, Spring Index for Valve Spring & Axial Force on Valve Spring. We can use 1 other way(s) to calculate the same, which is/are as follows -

Wahl Factor of Valve Spring = (pi*Shear Stress in Valve Spring*Wire Diameter of Valve Spring^2)/(8*Spring Index for Valve Spring*(Initial Spring Force on Valve+Stiffness of Valve Spring*Lift of Valve))

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