Brake Mean Effective Pressure Calculator

✖Mechanical Efficiency is measure of the effectiveness with which a mechanical system performs.ⓘ Mechanical Efficiency [η_m]			+10% -10%
✖Indicated Mean Effective Pressure can be thought of as the pressure that persists in the cylinder during the entirety of one cycle of the engine.ⓘ Indicated Mean Effective Pressure [IMEP]			+10% -10%

✖Brake Mean Effective Pressure is a measure of the average pressure exerted on the piston during the power stroke, and is calculated by dividing net work output of engine by the displacement volume.ⓘ Brake Mean Effective Pressure [BMEP]

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Formula

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Brake Mean Effective Pressure

Formula

`"BMEP" = "η"_{"m"}*"IMEP"`

Example

`"4.7645Bar"="0.733"*"6.5Bar"`

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Brake Mean Effective Pressure Solution

STEP 0: Pre-Calculation Summary

Formula Used

Brake Mean Effective Pressure = Mechanical Efficiency*Indicated Mean Effective Pressure
BMEP = η_m*IMEP
This formula uses 3 Variables

Variables Used

Brake Mean Effective Pressure - (Measured in Pascal) - Brake Mean Effective Pressure is a measure of the average pressure exerted on the piston during the power stroke, and is calculated by dividing net work output of engine by the displacement volume.
Mechanical Efficiency - Mechanical Efficiency is measure of the effectiveness with which a mechanical system performs.
Indicated Mean Effective Pressure - (Measured in Pascal) - Indicated Mean Effective Pressure can be thought of as the pressure that persists in the cylinder during the entirety of one cycle of the engine.

STEP 1: Convert Input(s) to Base Unit

Mechanical Efficiency: 0.733 --> No Conversion Required
Indicated Mean Effective Pressure: 6.5 Bar --> 650000 Pascal (Check conversion here)

STEP 2: Evaluate Formula

Substituting Input Values in Formula

BMEP = η_m*IMEP --> 0.733*650000

Evaluating ... ...

BMEP = 476450

STEP 3: Convert Result to Output's Unit

476450 Pascal -->4.7645 Bar (Check conversion here)

FINAL ANSWER

4.7645 Bar <-- Brake Mean Effective Pressure

(Calculation completed in 00.004 seconds)

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Credits

Created by Nisarg

Indian Institute of Technology,Roorlee (IITR), Roorkee

Nisarg has created this Calculator and 100+ more calculators!

Verified by Parminder Singh

Chandigarh University (CU), Punjab

Parminder Singh has verified this Calculator and 600+ more calculators!

< 25 Diesel Engine Power Plant Calculators

Overall Efficiency or Brake Thermal Efficiency using Brake Mean Effective Pressure

Go Brake Thermal Efficiency = (Brake Mean Effective Pressure*Piston Area*Stroke of Piston*(RPM/2)*Number of Cylinders)/(Fuel Consumption Rate*Calorific Value*60)

Break Power given Bore and Stroke

Go Brake Power of 4 Stroke = (Mechanical Efficiency*Indicated Mean Effective Pressure*Piston Area*Stroke of Piston*(RPM/2)*Number of Cylinders)/60

Indicated Power of 2 Stroke Engine

Go Indicated Power of 2 Stroke Engine = (Indicated Mean Effective Pressure*Piston Area*Stroke of Piston*RPM*Number of Cylinders)/60

Indicated Power of 4 Stroke Engine

Go Indicated Power of 4 Stroke = (Indicated Mean Effective Pressure*Piston Area*Stroke of Piston*(RPM/2)*Number of Cylinders)/60

Brake Power using Break Mean Effective Pressure

Go Brake Power of 4 Stroke = (Brake Mean Effective Pressure*Piston Area*Stroke of Piston*(RPM/2)*Number of Cylinders)/60

Overall Efficiency or Brake Thermal Efficiency using Mechanical Efficiency

Go Brake Thermal Efficiency = (Mechanical Efficiency*Indicated Power of 4 Stroke)/(Fuel Consumption Rate*Calorific Value)

Overall Efficiency or Brake Thermal Efficiency using Friction Power and Indicated Power

Go Brake Thermal Efficiency = (Indicated Power of 4 Stroke-Friction Power)/(Fuel Consumption Rate*Calorific Value)

Thermal Efficiency using Indicated Mean Effective Pressure and Break Mean Effective Pressure

Go Indicated Thermal Efficiency = Brake Thermal Efficiency*Indicated Mean Effective Pressure/Brake Mean Effective Pressure

Thermal Efficiency using Indicated Power and Brake Power

Go Indicated Thermal Efficiency = Brake Thermal Efficiency*Indicated Power of 4 Stroke/Brake Power of 4 Stroke

Thermal Efficiency using Indicated Power and Fuel Consumption Rate

Go Indicated Thermal Efficiency = Indicated Power of 4 Stroke/(Fuel Consumption Rate*Calorific Value)

Mechanical Efficiency using Indicated Power and Friction Power

Go Mechanical Efficiency = (Indicated Power of 4 Stroke-Friction Power)/Indicated Power of 4 Stroke

Brake Thermal Efficiency of Diesel Engine Power Plant

Go Brake Thermal Efficiency = Brake Power of 4 Stroke/(Fuel Consumption Rate*Calorific Value)

Mechanical Efficiency using Break Power and Friction Power

Go Mechanical Efficiency = Brake Power of 4 Stroke/(Brake Power of 4 Stroke+Friction Power)

Work Done per Cycle

Go Work = Indicated Mean Effective Pressure*Piston Area*Stroke of Piston

Brake Mean Effective Pressure

Go Brake Mean Effective Pressure = Mechanical Efficiency*Indicated Mean Effective Pressure

Break Power of 4 Stroke Diesel Engine

Go Brake Power of 4 Stroke = (2*pi*Torque*(RPM/2))/60

Brake Specific Fuel Consumption given Brake Power and Fuel Consumption Rate

Go Brake Specific Fuel Consumption = Fuel Consumption Rate/Brake Power of 4 Stroke

Break Power of 2 Stroke Diesel Engine

Go Brake Power of 2 Stroke = (2*pi*Torque*RPM)/60

Thermal Efficiency of Diesel Engine Power Plant

Go Indicated Thermal Efficiency = Brake Thermal Efficiency/Mechanical Efficiency

Break Power given Mechanical Efficiency and Indicated Power

Go Brake Power of 4 Stroke = Mechanical Efficiency*Indicated Power of 4 Stroke

Mechanical Efficiency of Diesel Engine

Go Mechanical Efficiency = Brake Power of 4 Stroke/Indicated Power of 4 Stroke

Indicated Power using Brake Power and Friction Power

Go Indicated Power of 4 Stroke = Brake Power of 4 Stroke+Friction Power

Friction Power of Diesel Engine

Go Friction Power = Indicated Power of 4 Stroke-Brake Power of 4 Stroke

Brake Mean Effective Pressure given Torque

Go Brake Mean Effective Pressure = Proportionality Constant*Torque

Area of Piston given Piston Bore

Go Piston Area = (pi/4)*Piston Bore^2

Brake Mean Effective Pressure Formula

Brake Mean Effective Pressure = Mechanical Efficiency*Indicated Mean Effective Pressure
BMEP = η_m*IMEP

What is a Diesel Engine Power Plant?

A Diesel Engine Power Plant(also known as Stand-by power station) uses a diesel engine as prime mover for the generation of electrical energy. This power station is generally compact and thus can be located where it is actually required. This kind of power station can be used to produce limited amounts of electrical energy.

What are the types of Diesel Engines?

Diesel engines can be classified into two-stroke and four-stroke engines, as well as inline and V-type engines. Two-stroke engines are simpler and more compact than four-stroke engines, but are less fuel efficient and emit more pollutants. Four-stroke engines are more complex but offer better fuel efficiency and lower emissions. Inline engines are simpler and more compact than V-type engines, but V-type engines are smoother and more powerful.

How to Calculate Brake Mean Effective Pressure?

Brake Mean Effective Pressure calculator uses Brake Mean Effective Pressure = Mechanical Efficiency*Indicated Mean Effective Pressure to calculate the Brake Mean Effective Pressure, The Brake Mean Effective Pressure formula is defined as a calculation of the engine cylinder pressure that would give the measured brake horsepower. Brake Mean Effective Pressure is denoted by BMEP symbol.

How to calculate Brake Mean Effective Pressure using this online calculator? To use this online calculator for Brake Mean Effective Pressure, enter Mechanical Efficiency (η_m) & Indicated Mean Effective Pressure (IMEP) and hit the calculate button. Here is how the Brake Mean Effective Pressure calculation can be explained with given input values -> 4.8E-5 = 0.733*650000.

FAQ

What is Brake Mean Effective Pressure?

The Brake Mean Effective Pressure formula is defined as a calculation of the engine cylinder pressure that would give the measured brake horsepower and is represented as BMEP = η_m*IMEP or Brake Mean Effective Pressure = Mechanical Efficiency*Indicated Mean Effective Pressure. Mechanical Efficiency is measure of the effectiveness with which a mechanical system performs & Indicated Mean Effective Pressure can be thought of as the pressure that persists in the cylinder during the entirety of one cycle of the engine.

How to calculate Brake Mean Effective Pressure?

The Brake Mean Effective Pressure formula is defined as a calculation of the engine cylinder pressure that would give the measured brake horsepower is calculated using Brake Mean Effective Pressure = Mechanical Efficiency*Indicated Mean Effective Pressure. To calculate Brake Mean Effective Pressure, you need Mechanical Efficiency (η_m) & Indicated Mean Effective Pressure (IMEP). With our tool, you need to enter the respective value for Mechanical Efficiency & Indicated Mean Effective Pressure 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 Brake Mean Effective Pressure?

In this formula, Brake Mean Effective Pressure uses Mechanical Efficiency & Indicated Mean Effective Pressure. We can use 1 other way(s) to calculate the same, which is/are as follows -

Brake Mean Effective Pressure = Proportionality Constant*Torque

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