Brake output per displacement of piston Calculator

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✖Brake power per cylinder per stroke is defined as the partial brake power utilized to move the piston during any stroke considering single cylinder.ⓘ Brake power per cylinder per stroke [W⋅_b]			+10% -10%
✖Displaced volume is defined as the volume covered by the piston during one complete stroke in IC engine.ⓘ Displaced volume [V_d]			+10% -10%

✖Brake output per displacement is defined as the brake power obtained per single displacement of piston from TDC to BDC or vice versa.ⓘ Brake output per displacement of piston [BOPD]

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Formula

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Brake output per displacement of piston

Formula

`"BOPD" = "W⋅"_{"b"}/"V"_{"d"}`

Example

`"799.2008W/m³"="4000W"/"5.005m³"`

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Brake output per displacement of piston Solution

STEP 0: Pre-Calculation Summary

Formula Used

Brake output per displacement = Brake power per cylinder per stroke/Displaced volume
BOPD = W⋅_b/V_d
This formula uses 3 Variables

Variables Used

Brake output per displacement - (Measured in Watt Per Cubic Meter) - Brake output per displacement is defined as the brake power obtained per single displacement of piston from TDC to BDC or vice versa.
Brake power per cylinder per stroke - (Measured in Watt) - Brake power per cylinder per stroke is defined as the partial brake power utilized to move the piston during any stroke considering single cylinder.
Displaced volume - (Measured in Cubic Meter) - Displaced volume is defined as the volume covered by the piston during one complete stroke in IC engine.

STEP 1: Convert Input(s) to Base Unit

Brake power per cylinder per stroke: 4000 Watt --> 4000 Watt No Conversion Required
Displaced volume: 5.005 Cubic Meter --> 5.005 Cubic Meter No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

BOPD = W⋅_b/V_d --> 4000/5.005

Evaluating ... ...

BOPD = 799.200799200799

STEP 3: Convert Result to Output's Unit

799.200799200799 Watt Per Cubic Meter --> No Conversion Required

FINAL ANSWER

799.200799200799 ≈ 799.2008 Watt Per Cubic Meter <-- Brake output per displacement

(Calculation completed in 00.004 seconds)

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Home » Physics » IC Engine » Fundamentals of IC Engine » Brake output per displacement of piston

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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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< 22 Fundamentals of IC Engine Calculators

Overall heat transfer coefficient of IC engine

Go Overall Heat Transfer Coefficient = 1/((1/Heat Transfer Coefficient on Gas Side)+(Thickness of Engine Wall/Thermal conductivity of material)+(1/Heat Transfer Coefficient on Coolant Side))

Fuel Jet Velocity

Go Fuel jet velocity = Coefficient of Discharge*sqrt(((2*(Fuel injection pressure-Pressure of charge inside the cylinder))/Fuel Density))

Rate of convection heat transfer between engine wall and coolant

Go Rate of Convection Heat Transfer = Convection Heat Transfer Coefficient*Surface Area of Engine Wall*(Engine Wall Surface Temperature-Temperature of Coolant)

Mass of air taken in each cylinder

Go Mass of air taken in each cylinder = (Intake air pressure*(Clearance volume+Displaced volume))/([R]*Intake air temperature)

Heat transfer across engine wall given overall heat transfer coefficient

Go Heat Transfer across Engine Wall = Overall Heat Transfer Coefficient*Surface Area of Engine Wall*(Gas side temperature-Coolant Side Temperature)

Power produced by IC engine given work done by engine

Go Power produced by IC engine = Work done per operating cycle*(Engine speed in rps/Crankshaft revolutions per power stroke)

Engine displacement given number of cylinders

Go Engine Displacement = Engine bore*Engine bore*Stroke Length*0.7854*Number of Cylinders

Rate of cooling of engine

Go Rate of Cooling = Rate of Cooling Constant*(Engine Temperature-Engine surrounding Temperature)

Time taken for engine to cool

Go Time taken to cool Engine = (Engine Temperature-Final Engine Temperature)/Rate of Cooling

Engine rpm

Go Engine RPM = (Speed of vehicle in mph*Gear Ratio of Transmission*336)/Tire Diameter

Kinetic energy stored in flywheel of IC engine

Go Kinetic energy stored in the flywheel = (Flywheel moment of inertia*(Flywheel angular velocity^2))/2

Swept Volume

Go Swept volume = (((pi/4)*Inner Diameter of Cylinder^2)*Stroke Length)

Work done per operating cycle in IC engine

Go Work done per operating cycle = Mean effective pressure in pascals*Displacement volume of piston

Brake output per displacement of piston

Go Brake output per displacement = Brake power per cylinder per stroke/Displaced volume

Engine specific volume

Go Engine specific volume = Displaced volume/Brake power per cylinder per stroke

Brake specific power

Go Brake specific power = Brake power per cylinder per stroke/Area of Piston

Equivalence ratio

Go Equivalence ratio = Actual Air Fuel Ratio/Stoichiometric Air Fuel Ratio

Brake work per cylinder per stroke

Go Brake work per cylinder per stroke = Bmep*Displaced volume

Compression Ratio given Clearance and Swept Volume

Go Compression Ratio = 1+(Swept volume/Clearance volume)

Engine Capacity

Go Engine capacity = Swept volume*Number of Cylinders

Mean piston speed

Go Mean Piston Speed = 2*Stroke Length*Engine Speed

Peak torque of engine

Go Peak Torque of Engine = Engine Displacement*1.25

Brake output per displacement of piston Formula

Brake output per displacement = Brake power per cylinder per stroke/Displaced volume
BOPD = W⋅_b/V_d

What is brake output per displacement of piston?

It is defined as the brake power output per unit of piston displacement. It is a parameter which relates the power of an engine with its size.

How to Calculate Brake output per displacement of piston?

Brake output per displacement of piston calculator uses Brake output per displacement = Brake power per cylinder per stroke/Displaced volume to calculate the Brake output per displacement, The Brake output per displacement of piston formula is defined as the brake power obtained per single displacement of piston from TDC to BDC or vice versa. Brake output per displacement is denoted by BOPD symbol.

How to calculate Brake output per displacement of piston using this online calculator? To use this online calculator for Brake output per displacement of piston, enter Brake power per cylinder per stroke (W⋅_b) & Displaced volume (V_d) and hit the calculate button. Here is how the Brake output per displacement of piston calculation can be explained with given input values -> 799.2008 = 4000/5.005.

FAQ

What is Brake output per displacement of piston?

The Brake output per displacement of piston formula is defined as the brake power obtained per single displacement of piston from TDC to BDC or vice versa and is represented as BOPD = W⋅_b/V_d or Brake output per displacement = Brake power per cylinder per stroke/Displaced volume. Brake power per cylinder per stroke is defined as the partial brake power utilized to move the piston during any stroke considering single cylinder & Displaced volume is defined as the volume covered by the piston during one complete stroke in IC engine.

How to calculate Brake output per displacement of piston?

The Brake output per displacement of piston formula is defined as the brake power obtained per single displacement of piston from TDC to BDC or vice versa is calculated using Brake output per displacement = Brake power per cylinder per stroke/Displaced volume. To calculate Brake output per displacement of piston, you need Brake power per cylinder per stroke (W⋅_b) & Displaced volume (V_d). With our tool, you need to enter the respective value for Brake power per cylinder per stroke & Displaced volume 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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