Lift of Engine Valve Solution

STEP 0: Pre-Calculation Summary
Formula Used
Lift of Valve = Force to Lift Engine Valve/Stiffness of Valve Spring
hmax = P2/k
This formula uses 3 Variables
Variables Used
Lift of Valve - (Measured in Meter) - Lift of Valve is the height to which the valve is lifted during operation for the flow of gases.
Force to Lift Engine Valve - (Measured in Newton) - Force to Lift Engine Valve is the amount of force (a push or pull upon the valve) that is required to lift the valve.
Stiffness of Valve Spring - (Measured in Newton per Meter) - Stiffness of Valve Spring is a measure of the resistance offered by an elastic valve spring to deformation, every object in this universe has some stiffness.
STEP 1: Convert Input(s) to Base Unit
Force to Lift Engine Valve: 250 Newton --> 250 Newton No Conversion Required
Stiffness of Valve Spring: 9.3 Newton per Millimeter --> 9300 Newton per Meter (Check conversion here)
STEP 2: Evaluate Formula
Substituting Input Values in Formula
hmax = P2/k --> 250/9300
Evaluating ... ...
hmax = 0.0268817204301075
STEP 3: Convert Result to Output's Unit
0.0268817204301075 Meter -->26.8817204301075 Millimeter (Check conversion here)
FINAL ANSWER
26.8817204301075 26.88172 Millimeter <-- Lift of Valve
(Calculation completed in 00.004 seconds)

Credits

Created by Saurabh Patil
Shri Govindram Seksaria Institute of Technology and Science (SGSITS ), Indore
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6 Valve Lift Calculators

Valve Seat Angle given Maximum Lift of Valve
Go Valve Seat Angle = arccos(Diameter of Port/(4*Lift of Valve))
Maximum Lift of Valve given Diameter of Port and Valve Seat Angle
Go Lift of Valve = Diameter of Port/(4*cos(Valve Seat Angle))
Diameter of Port given Maximum Lift of Valve
Go Diameter of Port = 4*Lift of Valve*cos(Valve Seat Angle)
Force Required to Lift Engine Valve
Go Force to Lift Engine Valve = Stiffness of Valve Spring*Lift of Valve
Lift of Engine Valve
Go Lift of Valve = Force to Lift Engine Valve/Stiffness of Valve Spring
Maximum Lift of Valve for Flat Headed Valves
Go Lift of Valve = Diameter of Port/4

Lift of Engine Valve Formula

Lift of Valve = Force to Lift Engine Valve/Stiffness of Valve Spring
hmax = P2/k

Working of Valve Spring

The purpose of the valve spring is to exert a force on the rocker arm in order to maintain contact between the follower and cam at the other end. During the suction stroke, the initial spring force keeps the valve closed against negative pressure inside the cylinder. The total force acting on the spring of the exhaust valve consists of two factors, the initial spring force and force required to lift the valve.

How to Calculate Lift of Engine Valve?

Lift of Engine Valve calculator uses Lift of Valve = Force to Lift Engine Valve/Stiffness of Valve Spring to calculate the Lift of Valve, The Lift of engine valve is the height to which the engine valve is lifted during operation for the flow of gases. Lift of Valve is denoted by hmax symbol.

How to calculate Lift of Engine Valve using this online calculator? To use this online calculator for Lift of Engine Valve, enter Force to Lift Engine Valve (P2) & Stiffness of Valve Spring (k) and hit the calculate button. Here is how the Lift of Engine Valve calculation can be explained with given input values -> 26881.72 = 250/9300.

FAQ

What is Lift of Engine Valve?
The Lift of engine valve is the height to which the engine valve is lifted during operation for the flow of gases and is represented as hmax = P2/k or Lift of Valve = Force to Lift Engine Valve/Stiffness of Valve Spring. Force to Lift Engine Valve is the amount of force (a push or pull upon the valve) that is required to lift the valve & Stiffness of Valve Spring is a measure of the resistance offered by an elastic valve spring to deformation, every object in this universe has some stiffness.
How to calculate Lift of Engine Valve?
The Lift of engine valve is the height to which the engine valve is lifted during operation for the flow of gases is calculated using Lift of Valve = Force to Lift Engine Valve/Stiffness of Valve Spring. To calculate Lift of Engine Valve, you need Force to Lift Engine Valve (P2) & Stiffness of Valve Spring (k). With our tool, you need to enter the respective value for Force to Lift Engine Valve & Stiffness of 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 Lift of Valve?
In this formula, Lift of Valve uses Force to Lift Engine Valve & Stiffness of Valve Spring. We can use 2 other way(s) to calculate the same, which is/are as follows -
  • Lift of Valve = Diameter of Port/(4*cos(Valve Seat Angle))
  • Lift of Valve = Diameter of Port/4
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