Bmep given engine torque Solution

STEP 0: Pre-Calculation Summary
Formula Used
Bmep = (2*pi*Engine Torque*Engine Speed)/Mean Piston Speed
Bmep = (2*pi*T*N)/sp
This formula uses 1 Constants, 4 Variables
Constants Used
pi - Archimedes' constant Value Taken As 3.14159265358979323846264338327950288
Variables Used
Bmep - (Measured in Pascal) - Bmep is defined as the average pressure which, if imposed on the pistons uniformly from the top to the bottom of each power stroke, would produce the measured power output.
Engine Torque - (Measured in Newton Meter) - Engine Torque is defined as a rotating force produced by a engine's crankshaft due to power developed during power stroke in IC engine.
Engine Speed - (Measured in Radian per Second) - Engine Speed is the speed at which the crankshaft of the engine rotates.
Mean Piston Speed - (Measured in Meter per Second) - Mean Piston Speed is the average speed of the piston over one engine revolution.
STEP 1: Convert Input(s) to Base Unit
Engine Torque: 140000 Newton Millimeter --> 140 Newton Meter (Check conversion here)
Engine Speed: 4000 Revolution per Minute --> 418.879020457308 Radian per Second (Check conversion here)
Mean Piston Speed: 4.5 Meter per Second --> 4.5 Meter per Second No Conversion Required
STEP 2: Evaluate Formula
Substituting Input Values in Formula
Bmep = (2*pi*T*N)/sp --> (2*pi*140*418.879020457308)/4.5
Evaluating ... ...
Bmep = 81881.1624344975
STEP 3: Convert Result to Output's Unit
81881.1624344975 Pascal --> No Conversion Required
FINAL ANSWER
81881.1624344975 โ‰ˆ 81881.16 Pascal <-- Bmep
(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

Bmep given engine torque Formula

Bmep = (2*pi*Engine Torque*Engine Speed)/Mean Piston Speed
Bmep = (2*pi*T*N)/sp

What is the brake mean effective pressure?

Bmep is the average (mean) pressure which, if imposed on the pistons uniformly from the top to the bottom of each power stroke, would produce the measured (brake) power output. Brake Mean Effective Pressure (BMEP) is another very effective yardstick for comparing the performance of an engine of a given type to another of the same type, and for evaluating the reasonableness of performance claims or requirements.

How to Calculate Bmep given engine torque?

Bmep given engine torque calculator uses Bmep = (2*pi*Engine Torque*Engine Speed)/Mean Piston Speed to calculate the Bmep, The Bmep given engine torque formula is defined as the average pressure which, if imposed on the pistons uniformly from the top to the bottom of each power stroke, would produce the measured power output. Bmep is denoted by Bmep symbol.

How to calculate Bmep given engine torque using this online calculator? To use this online calculator for Bmep given engine torque, enter Engine Torque (T), Engine Speed (N) & Mean Piston Speed (sp) and hit the calculate button. Here is how the Bmep given engine torque calculation can be explained with given input values -> 81881.16 = (2*pi*140*418.879020457308)/4.5.

FAQ

What is Bmep given engine torque?
The Bmep given engine torque formula is defined as the average pressure which, if imposed on the pistons uniformly from the top to the bottom of each power stroke, would produce the measured power output and is represented as Bmep = (2*pi*T*N)/sp or Bmep = (2*pi*Engine Torque*Engine Speed)/Mean Piston Speed. Engine Torque is defined as a rotating force produced by a engine's crankshaft due to power developed during power stroke in IC engine, Engine Speed is the speed at which the crankshaft of the engine rotates & Mean Piston Speed is the average speed of the piston over one engine revolution.
How to calculate Bmep given engine torque?
The Bmep given engine torque formula is defined as the average pressure which, if imposed on the pistons uniformly from the top to the bottom of each power stroke, would produce the measured power output is calculated using Bmep = (2*pi*Engine Torque*Engine Speed)/Mean Piston Speed. To calculate Bmep given engine torque, you need Engine Torque (T), Engine Speed (N) & Mean Piston Speed (sp). With our tool, you need to enter the respective value for Engine Torque, Engine Speed & Mean Piston Speed 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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