Compression Ratio given Clearance and Swept Volume Calculator

✖Swept volume is the volume between the top dead center (TDC) and bottom dead center (BDC).ⓘ Swept volume [V_s]			+10% -10%
✖The clearance volume is the volume remaining above the piston of an engine when it reaches top dead center.ⓘ Clearance Volume [V_c]			+10% -10%

✖Compression ratio is ratio between volume of cylinder and combustion chamber.ⓘ Compression Ratio given Clearance and Swept Volume [r]

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Formula

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Compression Ratio given Clearance and Swept Volume

Formula

`"r" = 1+("V"_{"s"}/"V"_{"c"})`

Example

`"1.01178"=1+("1178cm³"/"0.10m³")`

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Compression Ratio given Clearance and Swept Volume Solution

STEP 0: Pre-Calculation Summary

Formula Used

Compression Ratio = 1+(Swept volume/Clearance Volume)
r = 1+(V_s/V_c)
This formula uses 3 Variables

Variables Used

Compression Ratio - Compression ratio is ratio between volume of cylinder and combustion chamber.
Swept volume - (Measured in Cubic Meter) - Swept volume is the volume between the top dead center (TDC) and bottom dead center (BDC).
Clearance Volume - (Measured in Cubic Meter) - The clearance volume is the volume remaining above the piston of an engine when it reaches top dead center.

STEP 1: Convert Input(s) to Base Unit

Swept volume: 1178 Cubic Centimeter --> 0.001178 Cubic Meter (Check conversion here)
Clearance Volume: 0.1 Cubic Meter --> 0.1 Cubic Meter No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

r = 1+(V_s/V_c) --> 1+(0.001178/0.1)

Evaluating ... ...

r = 1.01178

STEP 3: Convert Result to Output's Unit

1.01178 --> No Conversion Required

FINAL ANSWER

1.01178 <-- Compression Ratio

(Calculation completed in 00.020 seconds)

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Credits

Created by Akshat Nama

Indian Institute of Information Technology, Design And Manufacturing (IIITDM ), Jabalpur

Akshat Nama has created this Calculator and 4 more calculators!

Verified by Prasana Kannan

Sri sivasubramaniyanadar college of engineering (ssn college of engineering), Chennai

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< 16 Fuel Injection in IC Engine Calculators

Actual Fuel Velocity of Injection Considering Orifice Flow Coefficient

Go Actual Fuel Velocity of Injection = Flow Coefficient of Orifice*sqrt((2*(Injection Pressure-Pressure in Cylinder during Fuel Injection)*100000)/Density of Fuel)

Volume of Fuel Injected Per Second in Diesel Engine

Go Volume of Fuel Injected per Second = Area of All Orifices of Fuel Injectors*Actual Fuel Velocity of Injection*Total Time Taken for Fuel Injection*Number of Injections per Minute/60

Fuel Jet Velocity

Go Fuel Jet Velocity = Coefficient of Discharge*sqrt(((2*(Fuel Injection Pressure-Pressure of charge inside the cylinder))/Density of Fuel))

Mass of air taken in each cylinder

Go Mass of Air Taken in Each Cylinder = (Intake Air Pressure*(Clearance Volume+Displaced Volume))/([R]*Intake Air Temperature)

Energy Content per Unit Cylinder Volume of Mixture Formed in Cylinder of Diesel Engine

Go Energy Content per Unit Cylinder in Diesel Engine = (Density of Air*Lower Heating Value of Fuel)/(Relative Air Fuel Ratio*Stoichiometric Air Fuel Ratio)

Energy Content Per Unit Cylinder Volume of Mixture Formed Prior to Induction into Cylinder

Go Energy Content per Unit Cylinder = (Density of Mixture*Lower Heating Value of Fuel)/(Relative Air Fuel Ratio*Stoichiometric Air Fuel Ratio+1)

Fuel Velocity at Time of Release into Engine Cylinder

Go Fuel Velocity at Tip of Nozzle = sqrt(2*Specific Volume of Fuel*(Injection Pressure-Pressure in Cylinder during Fuel Injection))

Area of all Orifices of Fuel Injectors

Go Area of All Orifices of Fuel Injectors = pi/4*Diameter of Fuel Orifice^2*Number of Orifices

Total Time Taken for Fuel Injection in One Cycle

Go Total Time Taken for Fuel Injection = Time of Fuel Injection in Crank Angle/360*60/Engine RPM

Fuel Consumption Per Cycle

Go Fuel Consumption per Cycle = Fuel Consumption per Cylinder/(60*Number of Cycles per Minute)

Volume of Fuel Injected Per Cycle

Go Volume of Fuel Injected per Cycle = Fuel Consumption per Cycle/Specific Gravity of Fuel

Fuel Consumption per Cylinder

Go Fuel Consumption per Cylinder = Fuel Consumption per Hour/Number of Orifices

Fuel Consumption Per Hour in Diesel Engine

Go Fuel Consumption per Hour = Brake Specific Fuel Consumption*Brake Power

Compression Ratio given Clearance and Swept Volume

Go Compression Ratio = 1+(Swept volume/Clearance Volume)

Engine Capacity

Go Engine Capacity = Swept volume*Number of Cylinders

Number of Fuel Injections Per Minute for Four Stroke Engine

Go Number of Injections per Minute = Engine RPM/2

Compression Ratio given Clearance and Swept Volume Formula

Compression Ratio = 1+(Swept volume/Clearance Volume)
r = 1+(V_s/V_c)

What is Compression Ratio ?

The compression ratio is the ratio between the volume of the cylinder and combustion chamber in an internal combustion engine at their maximum and minimum values.

How to Calculate Compression Ratio given Clearance and Swept Volume?

Compression Ratio given Clearance and Swept Volume calculator uses Compression Ratio = 1+(Swept volume/Clearance Volume) to calculate the Compression Ratio, The Compression Ratio given Clearance and Swept Volume is the ratio of the total cylinder volume when the piston is at the bottom dead center to the clearance volume. Compression Ratio is denoted by r symbol.

How to calculate Compression Ratio given Clearance and Swept Volume using this online calculator? To use this online calculator for Compression Ratio given Clearance and Swept Volume, enter Swept volume (V_s) & Clearance Volume (V_c) and hit the calculate button. Here is how the Compression Ratio given Clearance and Swept Volume calculation can be explained with given input values -> 1.01178 = 1+(0.001178/0.1).

FAQ

What is Compression Ratio given Clearance and Swept Volume?

The Compression Ratio given Clearance and Swept Volume is the ratio of the total cylinder volume when the piston is at the bottom dead center to the clearance volume and is represented as r = 1+(V_s/V_c) or Compression Ratio = 1+(Swept volume/Clearance Volume). Swept volume is the volume between the top dead center (TDC) and bottom dead center (BDC) & The clearance volume is the volume remaining above the piston of an engine when it reaches top dead center.

How to calculate Compression Ratio given Clearance and Swept Volume?

The Compression Ratio given Clearance and Swept Volume is the ratio of the total cylinder volume when the piston is at the bottom dead center to the clearance volume is calculated using Compression Ratio = 1+(Swept volume/Clearance Volume). To calculate Compression Ratio given Clearance and Swept Volume, you need Swept volume (V_s) & Clearance Volume (V_c). With our tool, you need to enter the respective value for Swept volume & Clearance Volume and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.

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