✖Air mass flow rate is the mass of intake air that is flowing per unit time.ⓘ Air Mass Flow Rate [m_af]			+10% -10%
✖Crankshaft revolutions per power stroke is defined as the number of crankshaft rotations when the ic engine takes one complete cycle.ⓘ Crankshaft revolutions per power stroke [n_R]			+10% -10%
✖Air density at intake is defined as the density of air recorded at intake manifold at atmospheric pressure and room temperature.ⓘ Air density at intake [ρ_a]			+10% -10%
✖Theoretical volume of engine is defined as the total volume of the combustion chamber including swept volume and clearance volume.ⓘ Theoretical volume of engine [V_te]			+10% -10%
✖Engine Speed is the speed at which the crankshaft of the engine rotates.ⓘ Engine Speed [N]			+10% -10%

✖Volumetric efficiency of IC engine is defined as the ratio of mass density of air-fuel mixture drawn into the cylinder to the mass density of the same volume of air in the intake manifold.ⓘ Volumetric efficiency of IC engine [η_v]

⎘ Copy

👎

Formula

✖

Volumetric efficiency of IC engine

Formula

`"η"_{"v"} = ("m"_{"af"}*"n"_{"R"})/("ρ"_{"a"}*"V"_{"te"}*"N")`

Example

`"0.019622"=("0.9kg/s"*"2")/("57.63kg/m³"*"0.0038m³"*"4000rev/min")`

Calculator

LaTeX

Reset

👍

Download IC Engine Formula PDF PDF Image

Volumetric efficiency of IC engine Solution

STEP 0: Pre-Calculation Summary

Formula Used

Volumetric efficiency of IC Engine = (Air Mass Flow Rate*Crankshaft revolutions per power stroke)/(Air density at intake*Theoretical volume of engine*Engine Speed)
η_v = (m_af*n_R)/(ρ_a*V_te*N)
This formula uses 6 Variables

Variables Used

Volumetric efficiency of IC Engine - Volumetric efficiency of IC engine is defined as the ratio of mass density of air-fuel mixture drawn into the cylinder to the mass density of the same volume of air in the intake manifold.
Air Mass Flow Rate - (Measured in Kilogram per Second) - Air mass flow rate is the mass of intake air that is flowing per unit time.
Crankshaft revolutions per power stroke - Crankshaft revolutions per power stroke is defined as the number of crankshaft rotations when the ic engine takes one complete cycle.
Air density at intake - (Measured in Kilogram per Cubic Meter) - Air density at intake is defined as the density of air recorded at intake manifold at atmospheric pressure and room temperature.
Theoretical volume of engine - (Measured in Cubic Meter) - Theoretical volume of engine is defined as the total volume of the combustion chamber including swept volume and clearance volume.
Engine Speed - (Measured in Radian per Second) - Engine Speed is the speed at which the crankshaft of the engine rotates.

STEP 1: Convert Input(s) to Base Unit

Air Mass Flow Rate: 0.9 Kilogram per Second --> 0.9 Kilogram per Second No Conversion Required
Crankshaft revolutions per power stroke: 2 --> No Conversion Required
Air density at intake: 57.63 Kilogram per Cubic Meter --> 57.63 Kilogram per Cubic Meter No Conversion Required
Theoretical volume of engine: 0.0038 Cubic Meter --> 0.0038 Cubic Meter No Conversion Required
Engine Speed: 4000 Revolution per Minute --> 418.879020457308 Radian per Second (Check conversion here)

STEP 2: Evaluate Formula

Substituting Input Values in Formula

η_v = (m_af*n_R)/(ρ_a*V_te*N) --> (0.9*2)/(57.63*0.0038*418.879020457308)

Evaluating ... ...

η_v = 0.0196223798994493

STEP 3: Convert Result to Output's Unit

0.0196223798994493 --> No Conversion Required

FINAL ANSWER

0.0196223798994493 ≈ 0.019622 <-- Volumetric efficiency of IC Engine

(Calculation completed in 00.004 seconds)

You are here -

Home » Physics » IC Engine » Engine Performance Parameters » Mechanical » For 4 Stroke Engine » Volumetric efficiency of IC engine

Credits

Created by Syed Adnan

Ramaiah University of Applied Sciences (RUAS), bangalore

Syed Adnan has created this Calculator and 200+ more calculators!

Verified by Anshika Arya

National Institute Of Technology (NIT), Hamirpur

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

< 24 For 4 Stroke Engine Calculators

Volumetric efficiency of IC engine

Go Volumetric efficiency of IC Engine = (Air Mass Flow Rate*Crankshaft revolutions per power stroke)/(Air density at intake*Theoretical volume of engine*Engine Speed)

Rate of heat conduction of engine wall

Go Rate of Heat Conduction of Engine Wall = ((Thermal conductivity of material)*Surface Area of Engine Wall*Temperature Difference across Engine Wall)/Thickness of Engine Wall

Indicated Power of Four-stroke Engine

Go Indicated Power = (Number of Cylinders*Mean Effective Pressure*Stroke Length*Area of Cross Section*(Engine Speed))/(2)

Brake power measured with dynamo meter

Go Brake Power = (pi*Pulley Diameter*(Engine Speed*60)*(Dead weight-Spring Scale Reading))/60

Volumetric Efficiency for 4S engines

Go Volumetric Efficiency = ((2*Air Mass Flow Rate)/(Air density at intake*Piston Swept Volume*(Engine Speed)))*100

Brake Mean Effective Pressure of 4S Engines given Brake power

Go Brake Mean Effective Pressure = (2*Brake Power)/(Stroke Length*Area of Cross Section*(Engine Speed))

Fuel conversion efficiency

Go Fuel conversion efficiency = Work done per Cycle in IC Engine/(Mass of Fuel Added per Cycle*Heating Value of the Fuel)

Bmep given engine torque

Go Brake Mean Effective Pressure = (2*pi*Engine Torque*Engine Speed)/Mean Piston Speed

Combustion efficiency

Go Combustion efficiency = Heat added by combustion per cycle/(Mass of Fuel Added per Cycle*Heating Value of the Fuel)

Work done per cycle in ic engine

Go Work done per Cycle in IC Engine = (Indicated engine power*Crankshaft revolutions per power stroke)/Engine RPM

Intake air mass of engine cylinder

Go Mass of Air at Intake = (Air Mass Flow Rate*Crankshaft revolutions per power stroke)/Engine RPM

Displaced volume in engine cylinder

Go Displaced volume = (Piston Stroke*pi*(Engine cylinder bore in meter^2))/4

Intake air density

Go Air density at intake = Intake Air Pressure/([R]*Intake Air Temperature)

Thermal efficiency of IC engine

Go Thermal Efficiency of IC Engine = Work done per Cycle in IC Engine/Heat added by combustion per cycle

Indicated mean effective pressure given mechanical efficiency

Go Indicated Mean Effective Pressure = Brake Mean Effective Pressure/Mechanical Efficiency of IC Engine

Frictional mean effective pressure

Go Frictional Mean Effective Pressure = Indicated Mean Effective Pressure-Brake Mean Effective Pressure

Volumetric efficiency of IC engine given actual volume of engine cylinder

Go Volumetric efficiency of IC Engine = Actual volume of intake air/Theoretical volume of engine

Connecting rod length to crank radius ratio

Go Connecting rod length to crank radius ratio = Connecting rod length/Crank Radius of Engine

Ratio of cylinder bore to piston stroke

Go Connecting rod length to crank radius ratio = Connecting rod length/Crank Radius of Engine

Total cylinder volume of IC engine

Go Total Volume of an Engine = Total Number of Cylinders*Total Volume of Engine Cylinder

Fuel conversion efficiency given thermal conversion efficiency

Go Fuel conversion efficiency = Combustion efficiency*Thermal Conversion Efficiency

Actual intake air volume per cylinder

Go Actual volume of intake air = Mass of Air at Intake/Air density at intake

Frictional power of engine

Go Frictional power of engine = Indicated Power-Brake Power

Horsepower of engine

Go Horsepower of Engine = (Engine Torque*Engine RPM)/5252

Volumetric efficiency of IC engine Formula

Volumetric efficiency of IC Engine = (Air Mass Flow Rate*Crankshaft revolutions per power stroke)/(Air density at intake*Theoretical volume of engine*Engine Speed)
η_v = (m_af*n_R)/(ρ_a*V_te*N)

What is volumetric efficiency of IC engine?

Volumetric efficiency of IC engine is defined as the ratio of the mass density of the air-fuel mixture drawn into the cylinder at atmospheric pressure (during the intake stroke) to the mass density of the same volume of air in the intake manifold. By volumetric efficiency we measure the capacity of the engine to fill the available geometric volume of the engine with air.

How to Calculate Volumetric efficiency of IC engine?

Volumetric efficiency of IC engine calculator uses Volumetric efficiency of IC Engine = (Air Mass Flow Rate*Crankshaft revolutions per power stroke)/(Air density at intake*Theoretical volume of engine*Engine Speed) to calculate the Volumetric efficiency of IC Engine, The Volumetric efficiency of IC engine formula is defined as the ratio of the mass density of the air-fuel mixture drawn into the cylinder at atmospheric pressure (during the intake stroke) to the mass density of the same volume of air in the intake manifold. Volumetric efficiency of IC Engine is denoted by η_v symbol.

How to calculate Volumetric efficiency of IC engine using this online calculator? To use this online calculator for Volumetric efficiency of IC engine, enter Air Mass Flow Rate (m_af), Crankshaft revolutions per power stroke (n_R), Air density at intake (ρ_a), Theoretical volume of engine (V_te) & Engine Speed (N) and hit the calculate button. Here is how the Volumetric efficiency of IC engine calculation can be explained with given input values -> 0.019622 = (0.9*2)/(57.63*0.0038*418.879020457308).

FAQ

What is Volumetric efficiency of IC engine?

The Volumetric efficiency of IC engine formula is defined as the ratio of the mass density of the air-fuel mixture drawn into the cylinder at atmospheric pressure (during the intake stroke) to the mass density of the same volume of air in the intake manifold and is represented as η_v = (m_af*n_R)/(ρ_a*V_te*N) or Volumetric efficiency of IC Engine = (Air Mass Flow Rate*Crankshaft revolutions per power stroke)/(Air density at intake*Theoretical volume of engine*Engine Speed). Air mass flow rate is the mass of intake air that is flowing per unit time, Crankshaft revolutions per power stroke is defined as the number of crankshaft rotations when the ic engine takes one complete cycle, Air density at intake is defined as the density of air recorded at intake manifold at atmospheric pressure and room temperature, Theoretical volume of engine is defined as the total volume of the combustion chamber including swept volume and clearance volume & Engine Speed is the speed at which the crankshaft of the engine rotates.

How to calculate Volumetric efficiency of IC engine?

The Volumetric efficiency of IC engine formula is defined as the ratio of the mass density of the air-fuel mixture drawn into the cylinder at atmospheric pressure (during the intake stroke) to the mass density of the same volume of air in the intake manifold is calculated using Volumetric efficiency of IC Engine = (Air Mass Flow Rate*Crankshaft revolutions per power stroke)/(Air density at intake*Theoretical volume of engine*Engine Speed). To calculate Volumetric efficiency of IC engine, you need Air Mass Flow Rate (m_af), Crankshaft revolutions per power stroke (n_R), Air density at intake (ρ_a), Theoretical volume of engine (V_te) & Engine Speed (N). With our tool, you need to enter the respective value for Air Mass Flow Rate, Crankshaft revolutions per power stroke, Air density at intake, Theoretical volume of engine & Engine Speed 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 Volumetric efficiency of IC Engine?

In this formula, Volumetric efficiency of IC Engine uses Air Mass Flow Rate, Crankshaft revolutions per power stroke, Air density at intake, Theoretical volume of engine & Engine Speed. We can use 1 other way(s) to calculate the same, which is/are as follows -

Volumetric efficiency of IC Engine = Actual volume of intake air/Theoretical volume of engine

Home

FREE PDFs

🔍 Search