Frictional power of engine Solution

STEP 0: Pre-Calculation Summary
Formula Used
Frictional power of engine = Indicated Power of Engine-Brake power of engine
F.P = IP-B.P
This formula uses 3 Variables
Variables Used
Frictional power of engine - (Measured in Watt) - Frictional power of engine is defined as the power loss in overcoming the friction between piston and cylinder walls.
Indicated Power of Engine - (Measured in Watt) - Indicated Power of Engine is the total power produced due to combustion of fuel within the IC engine's cylinder in one complete cycle neglecting any losses.
Brake power of engine - (Measured in Watt) - Brake power of engine is defined as the actual power available at the crankshaft and is the power output of the engine.
STEP 1: Convert Input(s) to Base Unit
Indicated Power of Engine: 4950 Watt --> 4950 Watt No Conversion Required
Brake power of engine: 4000 Watt --> 4000 Watt No Conversion Required
STEP 2: Evaluate Formula
Substituting Input Values in Formula
F.P = IP-B.P --> 4950-4000
Evaluating ... ...
F.P = 950
STEP 3: Convert Result to Output's Unit
950 Watt --> No Conversion Required
FINAL ANSWER
950 Watt <-- Frictional power of engine
(Calculation completed in 00.004 seconds)

Credits

Created by Syed Adnan
Ramaiah University of Applied Sciences (RUAS), bangalore
Syed Adnan has created this Calculator and 200+ more calculators!
Verified by Kartikay Pandit
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

Frictional power of engine Formula

Frictional power of engine = Indicated Power of Engine-Brake power of engine
F.P = IP-B.P

What is frictional power of engine?

The Friction Power formula is defined as the difference between the indicated power and brake power of an IC engine. The friction power is defined as the difference. between the power delivered to the piston while. the working fluid is contained within the cylinder, and the usable work delivered to the drive shaft.

How to Calculate Frictional power of engine?

Frictional power of engine calculator uses Frictional power of engine = Indicated Power of Engine-Brake power of engine to calculate the Frictional power of engine, The Frictional power of engine formula is defined as the power that is used to overcome the frictional resistance between piston and the cylinder walls. Frictional power of engine is denoted by F.P symbol.

How to calculate Frictional power of engine using this online calculator? To use this online calculator for Frictional power of engine, enter Indicated Power of Engine (IP) & Brake power of engine (B.P) and hit the calculate button. Here is how the Frictional power of engine calculation can be explained with given input values -> 950 = 4950-4000.

FAQ

What is Frictional power of engine?
The Frictional power of engine formula is defined as the power that is used to overcome the frictional resistance between piston and the cylinder walls and is represented as F.P = IP-B.P or Frictional power of engine = Indicated Power of Engine-Brake power of engine. Indicated Power of Engine is the total power produced due to combustion of fuel within the IC engine's cylinder in one complete cycle neglecting any losses & Brake power of engine is defined as the actual power available at the crankshaft and is the power output of the engine.
How to calculate Frictional power of engine?
The Frictional power of engine formula is defined as the power that is used to overcome the frictional resistance between piston and the cylinder walls is calculated using Frictional power of engine = Indicated Power of Engine-Brake power of engine. To calculate Frictional power of engine, you need Indicated Power of Engine (IP) & Brake power of engine (B.P). With our tool, you need to enter the respective value for Indicated Power of Engine & Brake power of engine 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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