Initial Spring Force on Exhaust Valve Calculator

✖Maximum Suction Pressure is the amount of pressure generated by the gases during its flow from an obstruction.ⓘ Maximum Suction Pressure [P_s]			+10% -10%
✖Diameter of Valve Head is the diameter of the top part of valve of an IC engine, valve intakes and exhausts gases to and from an engine.ⓘ Diameter of Valve Head [d_v]			+10% -10%

✖Spring Force on Rocker Arm Valve is the force exerted by a compressed or stretched spring upon any object that is attached to it.ⓘ Initial Spring Force on Exhaust Valve [P_sr]

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Formula

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Initial Spring Force on Exhaust Valve

Formula

`"P"_{"sr"} = (pi*"P"_{"s"}*"d"_{"v"}^2)/4`

Example

`"100.1383N"=(pi*"0.051N/mm²"*("50mm")^2)/4`

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Initial Spring Force on Exhaust Valve Solution

STEP 0: Pre-Calculation Summary

Formula Used

Spring Force on Rocker Arm Valve = (pi*Maximum Suction Pressure*Diameter of Valve Head^2)/4
P_sr = (pi*P_s*d_v^2)/4
This formula uses 1 Constants, 3 Variables

Constants Used

pi - Archimedes' constant Value Taken As 3.14159265358979323846264338327950288

Variables Used

Spring Force on Rocker Arm Valve - (Measured in Newton) - Spring Force on Rocker Arm Valve is the force exerted by a compressed or stretched spring upon any object that is attached to it.
Maximum Suction Pressure - (Measured in Pascal) - Maximum Suction Pressure is the amount of pressure generated by the gases during its flow from an obstruction.
Diameter of Valve Head - (Measured in Meter) - Diameter of Valve Head is the diameter of the top part of valve of an IC engine, valve intakes and exhausts gases to and from an engine.

STEP 1: Convert Input(s) to Base Unit

Maximum Suction Pressure: 0.051 Newton per Square Millimeter --> 51000 Pascal (Check conversion here)
Diameter of Valve Head: 50 Millimeter --> 0.05 Meter (Check conversion here)

STEP 2: Evaluate Formula

Substituting Input Values in Formula

P_sr = (pi*P_s*d_v^2)/4 --> (pi*51000*0.05^2)/4

Evaluating ... ...

P_sr = 100.138265833175

STEP 3: Convert Result to Output's Unit

100.138265833175 Newton --> No Conversion Required

FINAL ANSWER

100.138265833175 ≈ 100.1383 Newton <-- Spring Force on Rocker Arm Valve

(Calculation completed in 00.004 seconds)

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Created by Saurabh Patil

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

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National Institute Of Technology (NIT), Hamirpur

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< 16 Force on Rocker Arm of Valves Calculators

Total Force on Rocker Arm of Exhaust Valve given Suction Pressure

Go Total Force on Rocker Arm of Exhaust Valve = (pi*Back Pressure on Engine Valve*Diameter of Valve Head^2)/4+Mass of Valve*Acceleration of Valve+(pi*Maximum Suction Pressure*Diameter of Valve Head^2)/4

Total Force on Rocker Arm of Inlet Valve given Suction Pressure

Go Total Force on Rocker Arm of Inlet Valve = Mass of Valve*Acceleration of Valve+(pi*Maximum Suction Pressure*Diameter of Valve Head^2)/4

Total Force on Rocker Arm of Exhaust Valve given Bending Moment near Boss of Rocker Arm

Go Total Force on Rocker Arm of Exhaust Valve = Bending Moment in Rocker Arm/(Length of Rocker Arm on Exhaust Valve Side-Diameter of Fulcrum Pin)

Downward Inertia Force on Exhaust Valve given Total Force on Rocker Arm of Exhaust Valve

Go Inertia Force on Valve = Total Force on Rocker Arm of Exhaust Valve-(Spring Force on Rocker Arm Valve+Gas Load on Exhaust Valve)

Initial Spring Force on Exhaust Valve given Total Force on Rocker Arm of Exhaust Valve

Go Spring Force on Rocker Arm Valve = Total Force on Rocker Arm of Exhaust Valve-(Inertia Force on Valve+Gas Load on Exhaust Valve)

Gas Load on Exhaust Valve given Total Force on Rocker Arm of Exhaust Valve

Go Gas Load on Exhaust Valve = Total Force on Rocker Arm of Exhaust Valve-(Inertia Force on Valve+Spring Force on Rocker Arm Valve)

Total Force on Rocker Arm of Exhaust Valve

Go Total Force on Rocker Arm of Exhaust Valve = Gas Load on Exhaust Valve+Inertia Force on Valve+Spring Force on Rocker Arm Valve

Maximum Suction Pressure on Exhaust Valve

Go Maximum Suction Pressure = (4*Spring Force on Rocker Arm Valve)/(pi*Diameter of Valve Head^2)

Back Pressure when Exhaust Valve Opens

Go Back Pressure on Engine Valve = (4*Gas Load on Exhaust Valve)/(pi*Diameter of Valve Head^2)

Initial Spring Force on Exhaust Valve

Go Spring Force on Rocker Arm Valve = (pi*Maximum Suction Pressure*Diameter of Valve Head^2)/4

Gas Load on Exhaust Valve when it Opens

Go Gas Load on Exhaust Valve = (pi*Back Pressure on Engine Valve*Diameter of Valve Head^2)/4

Downward Inertia Force on Valve given Total Force on Rocker Arm of Inlet Valve

Go Inertia Force on Valve = Total Force on Rocker Arm of Inlet Valve-Spring Force on Rocker Arm Valve

Initial Spring Force on Valve given Total Force on Rocker Arm of Inlet Valve

Go Spring Force on Rocker Arm Valve = Total Force on Rocker Arm of Inlet Valve-Inertia Force on Valve

Total Force on Rocker Arm of Inlet Valve

Go Total Force on Rocker Arm of Inlet Valve = Inertia Force on Valve+Spring Force on Rocker Arm Valve

Bending Stress in Rocker Arm near Boss of Rocker Arm given Bending Moment

Go Bending Stress in Rocker Arm = Bending Moment in Rocker Arm/(37*Thickness of Rocker Arm Web^3)

Downward Inertia Force on Exhaust Valve as it Moves Upwards

Go Inertia Force on Valve = Mass of Valve*Acceleration of Valve

Initial Spring Force on Exhaust Valve Formula

Spring Force on Rocker Arm Valve = (pi*Maximum Suction Pressure*Diameter of Valve Head^2)/4
P_sr = (pi*P_s*d_v^2)/4

Engine Valve Materials

The inlet valve is subjected to comparatively less temperature than the exhaust valve. Therefore, inlet valves are made of nickel-chromium steel. The exhaust valves are made of heat-resistant silicon–chromium steel. For heavy-duty engines, valves are made of chromium-vanadium steel. The valves are heat treated and surface hardness for inlet and exhaust valves is in the range of 250 to 300 HB.

How to Calculate Initial Spring Force on Exhaust Valve?

Initial Spring Force on Exhaust Valve calculator uses Spring Force on Rocker Arm Valve = (pi*Maximum Suction Pressure*Diameter of Valve Head^2)/4 to calculate the Spring Force on Rocker Arm Valve, Initial spring force on exhaust valve is the amount of force exerted by the spring onto the exhaust valve during its opening. Spring Force on Rocker Arm Valve is denoted by P_sr symbol.

How to calculate Initial Spring Force on Exhaust Valve using this online calculator? To use this online calculator for Initial Spring Force on Exhaust Valve, enter Maximum Suction Pressure (P_s) & Diameter of Valve Head (d_v) and hit the calculate button. Here is how the Initial Spring Force on Exhaust Valve calculation can be explained with given input values -> 100.1383 = (pi*51000*0.05^2)/4.

FAQ

What is Initial Spring Force on Exhaust Valve?

Initial spring force on exhaust valve is the amount of force exerted by the spring onto the exhaust valve during its opening and is represented as P_sr = (pi*P_s*d_v^2)/4 or Spring Force on Rocker Arm Valve = (pi*Maximum Suction Pressure*Diameter of Valve Head^2)/4. Maximum Suction Pressure is the amount of pressure generated by the gases during its flow from an obstruction & Diameter of Valve Head is the diameter of the top part of valve of an IC engine, valve intakes and exhausts gases to and from an engine.

How to calculate Initial Spring Force on Exhaust Valve?

Initial spring force on exhaust valve is the amount of force exerted by the spring onto the exhaust valve during its opening is calculated using Spring Force on Rocker Arm Valve = (pi*Maximum Suction Pressure*Diameter of Valve Head^2)/4. To calculate Initial Spring Force on Exhaust Valve, you need Maximum Suction Pressure (P_s) & Diameter of Valve Head (d_v). With our tool, you need to enter the respective value for Maximum Suction Pressure & Diameter of Valve Head 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 Spring Force on Rocker Arm Valve?

In this formula, Spring Force on Rocker Arm Valve uses Maximum Suction Pressure & Diameter of Valve Head. We can use 2 other way(s) to calculate the same, which is/are as follows -

Spring Force on Rocker Arm Valve = Total Force on Rocker Arm of Exhaust Valve-(Inertia Force on Valve+Gas Load on Exhaust Valve)
Spring Force on Rocker Arm Valve = Total Force on Rocker Arm of Inlet Valve-Inertia Force on Valve

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