Fuel conversion efficiency Solution

STEP 0: Pre-Calculation Summary
Formula Used
Fuel conversion efficiency = Work done per cycle in ic engine/(Mass of fuel added per cycle*Heating value of the fuel)
ηf = W/(mf*QHV)
This formula uses 4 Variables
Variables Used
Fuel conversion efficiency - Fuel conversion efficiency is defined as the ratio of the work produced per cycle to the amount of fuel energy supplied per cycle that can be released in the combustion process.
Work done per cycle in ic engine - (Measured in Joule) - Work done per cycle in ic engine is defined as work done to push the piston downwards during the power stroke of the otto cycle in ic engine.
Mass of fuel added per cycle - Mass of fuel added per cycle is defined as the fuel that gets combustible in one cycle.
Heating value of the fuel - (Measured in Joule per Kilogram) - Heating value of the fuel is defined as the chemical energy per unit mass of the fuel.
STEP 1: Convert Input(s) to Base Unit
Work done per cycle in ic engine: 100 Kilojoule --> 100000 Joule (Check conversion here)
Mass of fuel added per cycle: 0.005 --> No Conversion Required
Heating value of the fuel: 50000 Kilojoule per Kilogram --> 50000000 Joule per Kilogram (Check conversion here)
STEP 2: Evaluate Formula
Substituting Input Values in Formula
ηf = W/(mf*QHV) --> 100000/(0.005*50000000)
Evaluating ... ...
ηf = 0.4
STEP 3: Convert Result to Output's Unit
0.4 --> No Conversion Required
FINAL ANSWER
0.4 <-- Fuel conversion efficiency
(Calculation completed in 00.004 seconds)

Credits

Created by Syed Adnan
Ramaiah University of Applied Sciences (RUAS), bangalore
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National Institute Of Technology (NIT), Hamirpur
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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 in rps)
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
Brake power measured with dynamo meter
Go Brake power measured with dynamo meter = (pi*Pulley diameter*(Engine speed in rps*60)*(Dead weight-Spring scale reading))/60
Indicated Power of Four-stroke Engine
Go Indicated Power = (Number of Cylinders*Mean Effective Pressure*Stroke Length*Area of Cross Section*(Engine Speed))/(2)
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))
Work done per cycle in ic engine
Go Work done per cycle in ic engine = (Indicated engine power*Crankshaft revolutions per power stroke)/Engine Speed in rpm
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)
Combustion efficiency
Go Combustion efficiency = Heat added by combustion per cycle/(Mass of fuel added per cycle*Heating value of the fuel)
Intake air mass of engine cylinder
Go Mass of air at intake = (Air Mass Flow Rate*Crankshaft revolutions per power stroke)/Engine Speed in rpm
Bmep given engine torque
Go Bmep = (2*pi*Engine Torque*Engine Speed)/Mean Piston Speed
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
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
Frictional power of engine
Go Frictional power of engine = Indicated Power of Engine-Brake power of engine
Actual intake air volume per cylinder
Go Actual volume of intake air = Mass of air at intake/Air density at intake
Horsepower of engine
Go Horsepower of engine = (Engine Torque*Engine RPM)/5252
Indicated mean effective pressure given mechanical efficiency
Go Imep = Bmep/Mechanical efficiency of ic engine
Frictional mean effective pressure
Go Fmep = Imep-Bmep

Fuel conversion efficiency Formula

Fuel conversion efficiency = Work done per cycle in ic engine/(Mass of fuel added per cycle*Heating value of the fuel)
ηf = W/(mf*QHV)

What is fuel conversion efficiency?

Fuel conversion efficiency is the ratio of the work produced per cycle to the amount of fuel energy supplied per cycle that can be released in the combustion process. The fuel conversion efficiency is defined as the ratio between the useful mechanical work produced by the engine and the theoretical energy content of the fuel mass.

How to Calculate Fuel conversion efficiency?

Fuel conversion efficiency calculator uses Fuel conversion efficiency = Work done per cycle in ic engine/(Mass of fuel added per cycle*Heating value of the fuel) to calculate the Fuel conversion efficiency, The Fuel conversion efficiency formula is defined as the ratio of the work produced per cycle to the amount of fuel energy supplied per cycle that can be released in the combustion process. Fuel conversion efficiency is denoted by ηf symbol.

How to calculate Fuel conversion efficiency using this online calculator? To use this online calculator for Fuel conversion efficiency, enter Work done per cycle in ic engine (W), Mass of fuel added per cycle (mf) & Heating value of the fuel (QHV) and hit the calculate button. Here is how the Fuel conversion efficiency calculation can be explained with given input values -> 0.4 = 100000/(0.005*50000000).

FAQ

What is Fuel conversion efficiency?
The Fuel conversion efficiency formula is defined as the ratio of the work produced per cycle to the amount of fuel energy supplied per cycle that can be released in the combustion process and is represented as ηf = W/(mf*QHV) or Fuel conversion efficiency = Work done per cycle in ic engine/(Mass of fuel added per cycle*Heating value of the fuel). Work done per cycle in ic engine is defined as work done to push the piston downwards during the power stroke of the otto cycle in ic engine, Mass of fuel added per cycle is defined as the fuel that gets combustible in one cycle & Heating value of the fuel is defined as the chemical energy per unit mass of the fuel.
How to calculate Fuel conversion efficiency?
The Fuel conversion efficiency formula is defined as the ratio of the work produced per cycle to the amount of fuel energy supplied per cycle that can be released in the combustion process is calculated using Fuel conversion efficiency = Work done per cycle in ic engine/(Mass of fuel added per cycle*Heating value of the fuel). To calculate Fuel conversion efficiency, you need Work done per cycle in ic engine (W), Mass of fuel added per cycle (mf) & Heating value of the fuel (QHV). With our tool, you need to enter the respective value for Work done per cycle in ic engine, Mass of fuel added per cycle & Heating value of the fuel 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 Fuel conversion efficiency?
In this formula, Fuel conversion efficiency uses Work done per cycle in ic engine, Mass of fuel added per cycle & Heating value of the fuel. We can use 1 other way(s) to calculate the same, which is/are as follows -
  • Fuel conversion efficiency = Combustion efficiency*Thermal conversion efficiency
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