Mechanical Efficiency of IC engine Calculator

✖Brake Power is the power available at the crankshaft.ⓘ Brake Power [BP]			+10% -10%
✖Indicated Power is the total power produced due to combustion of fuel within the IC engine's cylinder in one complete cycle neglecting any losses.ⓘ Indicated Power [IP]			+10% -10%

✖Mechanical Efficiency (in %) is the ratio of the power delivered by a mechanical system to the power supplied to it.ⓘ Mechanical Efficiency of IC engine [η_m]

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Mechanical Efficiency of IC engine Solution

STEP 0: Pre-Calculation Summary

Formula Used

Mechanical Efficiency = (Brake Power/Indicated Power)*100
η_m = (BP/IP)*100
This formula uses 3 Variables

Variables Used

Mechanical Efficiency - Mechanical Efficiency (in %) is the ratio of the power delivered by a mechanical system to the power supplied to it.
Brake Power - (Measured in Watt) - Brake Power is the power available at the crankshaft.
Indicated Power - (Measured in Watt) - Indicated Power is the total power produced due to combustion of fuel within the IC engine's cylinder in one complete cycle neglecting any losses.

STEP 1: Convert Input(s) to Base Unit

Brake Power: 0.55 Kilowatt --> 550 Watt (Check conversion here)
Indicated Power: 0.9 Kilowatt --> 900 Watt (Check conversion here)

STEP 2: Evaluate Formula

Substituting Input Values in Formula

η_m = (BP/IP)*100 --> (550/900)*100

Evaluating ... ...

η_m = 61.1111111111111

STEP 3: Convert Result to Output's Unit

61.1111111111111 --> No Conversion Required

FINAL ANSWER

61.1111111111111 ≈ 61.11111 <-- Mechanical Efficiency

(Calculation completed in 00.004 seconds)

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Created by Aditya Prakash Gautam

Indian Institute of Technology (IIT (ISM) ), Dhanbad, Jharkhand

Aditya Prakash Gautam has created this Calculator and 25+ more calculators!

Verified by Anshika Arya

National Institute Of Technology (NIT), Hamirpur

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< Important Formulas of Engine Dynamics Calculators

Brake Power given Mean Effective Pressure

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

Beale Number

LaTeX Go Beale Number = Engine Power/(Average Gas Pressure*Piston Swept Volume*Engine Frequency)

Brake specific fuel consumption

LaTeX Go Brake Specific Fuel Consumption = Fuel Consumption in IC engine/Brake Power

Brake Power given Mechanical Efficiency

LaTeX Go Brake Power = (Mechanical Efficiency/100)*Indicated Power

< Power and Efficiency Calculators

Brake Power given Mean Effective Pressure

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

Indicated Power given Mechanical Efficiency

LaTeX Go Indicated Power = Brake Power/(Mechanical Efficiency/100)

Brake Power given Mechanical Efficiency

LaTeX Go Brake Power = (Mechanical Efficiency/100)*Indicated Power

Mechanical Efficiency of IC engine

LaTeX Go Mechanical Efficiency = (Brake Power/Indicated Power)*100

Mechanical Efficiency of IC engine Formula

LaTeX Go

Mechanical Efficiency = (Brake Power/Indicated Power)*100
η_m = (BP/IP)*100

What factors affect Mechanical Efficiency ?

Mechanical efficiency is the ratio of brake power (delivered power) to the indicated power (power provided to the piston). Factors affecting mechanical efficiency includes lubrication (tribology), vibration, lost motion, dry friction, fluid viscosity, heat insulation, cooling measures, corrosion.

How to Calculate Mechanical Efficiency of IC engine?

Mechanical Efficiency of IC engine calculator uses Mechanical Efficiency = (Brake Power/Indicated Power)*100 to calculate the Mechanical Efficiency, The Mechanical Efficiency of IC Engine formula is defined as the ratio of brake power to the indicated power of an IC engine. Mechanical Efficiency is denoted by η_m symbol.

How to calculate Mechanical Efficiency of IC engine using this online calculator? To use this online calculator for Mechanical Efficiency of IC engine, enter Brake Power (BP) & Indicated Power (IP) and hit the calculate button. Here is how the Mechanical Efficiency of IC engine calculation can be explained with given input values -> 550 = (550/900)*100.

FAQ

What is Mechanical Efficiency of IC engine?

The Mechanical Efficiency of IC Engine formula is defined as the ratio of brake power to the indicated power of an IC engine and is represented as η_m = (BP/IP)*100 or Mechanical Efficiency = (Brake Power/Indicated Power)*100. Brake Power is the power available at the crankshaft & Indicated Power is the total power produced due to combustion of fuel within the IC engine's cylinder in one complete cycle neglecting any losses.

How to calculate Mechanical Efficiency of IC engine?

The Mechanical Efficiency of IC Engine formula is defined as the ratio of brake power to the indicated power of an IC engine is calculated using Mechanical Efficiency = (Brake Power/Indicated Power)*100. To calculate Mechanical Efficiency of IC engine, you need Brake Power (BP) & Indicated Power (IP). With our tool, you need to enter the respective value for Brake Power & Indicated Power 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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