Nominal Diameter of Tappet or Stud of Rocker Arm of Engine Valve given its Core Diameter Calculator

✖Total Force on Rocker Arm of Exhaust Valve is the total force acting onto the rocker arm of the exhaust valve.ⓘ Total Force on Rocker Arm of Exhaust Valve [P_e]			+10% -10%
✖Compressive Stress in Tappet or stud is the force per unit area that is responsible for the deformation of the tappet such that the volume of the material reduces and its length decreases.ⓘ Compressive Stress in Tappet [σ_c]			+10% -10%

✖Nominal Diameter is defined as the mean or average outside diameter of a profile.ⓘ Nominal Diameter of Tappet or Stud of Rocker Arm of Engine Valve given its Core Diameter [D_N]

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Nominal Diameter of Tappet or Stud of Rocker Arm of Engine Valve given its Core Diameter Solution

STEP 0: Pre-Calculation Summary

Formula Used

Nominal Diameter = (sqrt((4*Total Force on Rocker Arm of Exhaust Valve)/(pi*Compressive Stress in Tappet)))/0.8
D_N = (sqrt((4*P_e)/(pi*σ_c)))/0.8
This formula uses 1 Constants, 1 Functions, 3 Variables

Constants Used

pi - Archimedes' constant Value Taken As 3.14159265358979323846264338327950288

Functions Used

sqrt - A square root function is a function that takes a non-negative number as an input and returns the square root of the given input number., sqrt(Number)

Variables Used

Nominal Diameter - (Measured in Meter) - Nominal Diameter is defined as the mean or average outside diameter of a profile.
Total Force on Rocker Arm of Exhaust Valve - (Measured in Newton) - Total Force on Rocker Arm of Exhaust Valve is the total force acting onto the rocker arm of the exhaust valve.
Compressive Stress in Tappet - (Measured in Pascal) - Compressive Stress in Tappet or stud is the force per unit area that is responsible for the deformation of the tappet such that the volume of the material reduces and its length decreases.

STEP 1: Convert Input(s) to Base Unit

Total Force on Rocker Arm of Exhaust Valve: 1926 Newton --> 1926 Newton No Conversion Required
Compressive Stress in Tappet: 36.5 Newton per Square Millimeter --> 36500000 Pascal (Check conversion here)

STEP 2: Evaluate Formula

Substituting Input Values in Formula

D_N = (sqrt((4*P_e)/(pi*σ_c)))/0.8 --> (sqrt((4*1926)/(pi*36500000)))/0.8

Evaluating ... ...

D_N = 0.0102458214067811

STEP 3: Convert Result to Output's Unit

0.0102458214067811 Meter -->10.2458214067811 Millimeter (Check conversion here)

FINAL ANSWER

10.2458214067811 ≈ 10.24582 Millimeter <-- Nominal Diameter

(Calculation completed in 00.004 seconds)

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Home » Physics » IC Engine » Design of IC Engine Components » Rocker Arm » Mechanical » Design of Tappet » Nominal Diameter of Tappet or Stud of Rocker Arm of Engine Valve given its Core Diameter

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

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< Design of Tappet Calculators

Core Diameter of Tappet or Stud of Rocker Arm of Engine Valve

LaTeX Go Core Diameter of Tappet = sqrt((4*(Gas Load on Exhaust Valve+Inertia Force on Valve+Spring Force))/(pi*Compressive Stress in Tappet))

Compressive Stress in Tappet of Rocker Arm of Engine Valve

LaTeX Go Compressive Stress in Tappet = (4*(Gas Load on Exhaust Valve+Inertia Force on Valve+Spring Force))/(pi*Core Diameter of Tappet^2)

Compressive Force on Tappet of Rocker Arm of Engine Valve given Stress in Tappet

LaTeX Go Compressive Force on Tappet = (Compressive Stress in Tappet*pi*Core Diameter of Tappet^2)/4

Compressive Force on Tappet of Rocker Arm of Engine Valve

LaTeX Go Compressive Force on Tappet = Gas Load on Exhaust Valve+Inertia Force on Valve+Spring Force

Nominal Diameter of Tappet or Stud of Rocker Arm of Engine Valve given its Core Diameter Formula

LaTeX Go

Nominal Diameter = (sqrt((4*Total Force on Rocker Arm of Exhaust Valve)/(pi*Compressive Stress in Tappet)))/0.8
D_N = (sqrt((4*P_e)/(pi*σ_c)))/0.8

Engine Valve Motion

The motion of the engine valves is driven by the camshaft of the engine, which contains a series of lobes or cams that serve to create the linear motion of the valve from the rotation of the camshaft. The number of cam lobes on the camshaft is equal to the number of valves in the engine. Regardless of the engine design, the basic movement of the engine valves occurs by the cam riding against a lifter or a tappet that provides a force that presses against the valve stem and compresses the valve spring, thereby removing the spring tension that keeps the valve in the closed position. This movement of the valve stem lifts the valve off the seat in the cylinder head and opens the valve. Once the camshaft rotates further and the cam lobe moves so that the eccentric portion is no longer directly in contact with the lifter or tappet, the spring pressure closes the valve as the valve stem rides on the centric portion of the cam lobe.

How to Calculate Nominal Diameter of Tappet or Stud of Rocker Arm of Engine Valve given its Core Diameter?

Nominal Diameter of Tappet or Stud of Rocker Arm of Engine Valve given its Core Diameter calculator uses Nominal Diameter = (sqrt((4*Total Force on Rocker Arm of Exhaust Valve)/(pi*Compressive Stress in Tappet)))/0.8 to calculate the Nominal Diameter, The Nominal diameter of tappet or stud of rocker arm of engine valve given its core diameter is the outside or major diameter of the tappet or stud threads. Nominal Diameter is denoted by D_N symbol.

How to calculate Nominal Diameter of Tappet or Stud of Rocker Arm of Engine Valve given its Core Diameter using this online calculator? To use this online calculator for Nominal Diameter of Tappet or Stud of Rocker Arm of Engine Valve given its Core Diameter, enter Total Force on Rocker Arm of Exhaust Valve (P_e) & Compressive Stress in Tappet (σ_c) and hit the calculate button. Here is how the Nominal Diameter of Tappet or Stud of Rocker Arm of Engine Valve given its Core Diameter calculation can be explained with given input values -> 10245.82 = (sqrt((4*1926)/(pi*36500000)))/0.8.

FAQ

What is Nominal Diameter of Tappet or Stud of Rocker Arm of Engine Valve given its Core Diameter?

The Nominal diameter of tappet or stud of rocker arm of engine valve given its core diameter is the outside or major diameter of the tappet or stud threads and is represented as D_N = (sqrt((4*P_e)/(pi*σ_c)))/0.8 or Nominal Diameter = (sqrt((4*Total Force on Rocker Arm of Exhaust Valve)/(pi*Compressive Stress in Tappet)))/0.8. Total Force on Rocker Arm of Exhaust Valve is the total force acting onto the rocker arm of the exhaust valve & Compressive Stress in Tappet or stud is the force per unit area that is responsible for the deformation of the tappet such that the volume of the material reduces and its length decreases.

How to calculate Nominal Diameter of Tappet or Stud of Rocker Arm of Engine Valve given its Core Diameter?

The Nominal diameter of tappet or stud of rocker arm of engine valve given its core diameter is the outside or major diameter of the tappet or stud threads is calculated using Nominal Diameter = (sqrt((4*Total Force on Rocker Arm of Exhaust Valve)/(pi*Compressive Stress in Tappet)))/0.8. To calculate Nominal Diameter of Tappet or Stud of Rocker Arm of Engine Valve given its Core Diameter, you need Total Force on Rocker Arm of Exhaust Valve (P_e) & Compressive Stress in Tappet (σ_c). With our tool, you need to enter the respective value for Total Force on Rocker Arm of Exhaust Valve & Compressive Stress in Tappet 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 Nominal Diameter?

In this formula, Nominal Diameter uses Total Force on Rocker Arm of Exhaust Valve & Compressive Stress in Tappet. We can use 1 other way(s) to calculate the same, which is/are as follows -

Nominal Diameter = (sqrt((4*(Gas Load on Exhaust Valve+Inertia Force on Valve+Spring Force))/(pi*Compressive Stress in Tappet)))/0.8

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