Work Output for Diesel Cycle Solution

STEP 0: Pre-Calculation Summary
Formula Used
Work Output of Diesel Cycle = Pressure at Start of Isentropic Compression*Volume at Start of Isentropic Compression*(Compression Ratio^(Heat Capacity Ratio-1)*(Heat Capacity Ratio*(Cut-off Ratio-1)-Compression Ratio^(1-Heat Capacity Ratio)*(Cut-off Ratio^(Heat Capacity Ratio)-1)))/(Heat Capacity Ratio-1)
Wd = P1*V1*(r^(γ-1)*(γ*(rc-1)-r^(1-γ)*(rc^(γ)-1)))/(γ-1)
This formula uses 6 Variables
Variables Used
Work Output of Diesel Cycle - (Measured in Joule) - Work output of diesel cycle is the net difference between the work done on the gas during compression and the work done by the gas during expansion. It is the area enclosed by p-v diagram.
Pressure at Start of Isentropic Compression - (Measured in Pascal) - Pressure at Start of Isentropic Compression refers to the pressure exerted by the charge inside the wall of the cylinder at the start of the reversible adiabatic compression process in IC engine.
Volume at Start of Isentropic Compression - (Measured in Cubic Meter) - Volume at Start of Isentropic Compression is the volume of the engine cylinder before reversible adiabatic process, keeping entropy as constant. It is essentially the swept volume of the cylinder.
Compression Ratio - Compression ratio refers to how much the air-fuel mixture is squeezed in the cylinder before ignition. It's essentially the ratio between the volume of the cylinder at BDC to TDC.
Heat Capacity Ratio - The Heat Capacity Ratio or, adiabatic index quantifies the relationship between heat added at constant pressure and the resulting temperature increase compared to heat added at constant volume.
Cut-off Ratio - Cut-off ratio is the ratio of the cylinder volume at the start of compression stroke to the volume at the end of expansion stroke. It's a measure of piston's compression of the charge before ignition.
STEP 1: Convert Input(s) to Base Unit
Pressure at Start of Isentropic Compression: 110 Kilopascal --> 110000 Pascal (Check conversion ​here)
Volume at Start of Isentropic Compression: 0.65 Cubic Meter --> 0.65 Cubic Meter No Conversion Required
Compression Ratio: 20 --> No Conversion Required
Heat Capacity Ratio: 1.4 --> No Conversion Required
Cut-off Ratio: 1.95 --> No Conversion Required
STEP 2: Evaluate Formula
Substituting Input Values in Formula
Wd = P1*V1*(r^(γ-1)*(γ*(rc-1)-r^(1-γ)*(rc^(γ)-1)))/(γ-1) --> 110000*0.65*(20^(1.4-1)*(1.4*(1.95-1)-20^(1-1.4)*(1.95^(1.4)-1)))/(1.4-1)
Evaluating ... ...
Wd = 511423.307925302
STEP 3: Convert Result to Output's Unit
511423.307925302 Joule -->511.423307925302 Kilojoule (Check conversion ​here)
FINAL ANSWER
511.423307925302 511.4233 Kilojoule <-- Work Output of Diesel Cycle
(Calculation completed in 00.007 seconds)

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Air Standard Cycles Calculators

Mean Effective Pressure in Dual Cycle
​ LaTeX ​ Go Mean Effective Pressure of Dual Cycle = Pressure at Start of Isentropic Compression*(Compression Ratio^Heat Capacity Ratio*((Pressure Ratio in Dual Cycle-1)+Heat Capacity Ratio*Pressure Ratio in Dual Cycle*(Cut-off Ratio-1))-Compression Ratio*(Pressure Ratio in Dual Cycle*Cut-off Ratio^Heat Capacity Ratio-1))/((Heat Capacity Ratio-1)*(Compression Ratio-1))
Mean Effective Pressure in Diesel Cycle
​ LaTeX ​ Go Mean Effective Pressure of Diesel Cycle = Pressure at Start of Isentropic Compression*(Heat Capacity Ratio*Compression Ratio^Heat Capacity Ratio*(Cut-off Ratio-1)-Compression Ratio*(Cut-off Ratio^Heat Capacity Ratio-1))/((Heat Capacity Ratio-1)*(Compression Ratio-1))
Mean Effective Pressure in Otto Cycle
​ LaTeX ​ Go Mean Effective Pressure of Otto Cycle = Pressure at Start of Isentropic Compression*Compression Ratio*(((Compression Ratio^(Heat Capacity Ratio-1)-1)*(Pressure Ratio-1))/((Compression Ratio-1)*(Heat Capacity Ratio-1)))
Work Output for Otto Cycle
​ LaTeX ​ Go Work Output of Otto Cycle = Pressure at Start of Isentropic Compression*Volume at Start of Isentropic Compression*((Pressure Ratio-1)*(Compression Ratio^(Heat Capacity Ratio-1)-1))/(Heat Capacity Ratio-1)

Work Output for Diesel Cycle Formula

​LaTeX ​Go
Work Output of Diesel Cycle = Pressure at Start of Isentropic Compression*Volume at Start of Isentropic Compression*(Compression Ratio^(Heat Capacity Ratio-1)*(Heat Capacity Ratio*(Cut-off Ratio-1)-Compression Ratio^(1-Heat Capacity Ratio)*(Cut-off Ratio^(Heat Capacity Ratio)-1)))/(Heat Capacity Ratio-1)
Wd = P1*V1*(r^(γ-1)*(γ*(rc-1)-r^(1-γ)*(rc^(γ)-1)))/(γ-1)

How diesel engines Works?

Diesel engines differ from gasoline engines by using compressed air for ignition. Here's the basic process:

1. Intake: Fresh air gets sucked into the cylinder by a descending piston.
2. Compression: The piston rises, squeezing the air to a high pressure, which also heats it significantly.
3. Injection & Ignition: Near the top, a fine mist of diesel fuel is injected. The hot compressed air ignites the fuel without a spark plug.
4. Combustion & Power: Rapid burning creates hot, high-pressure gas that pushes the piston down, generating power.
5. Exhaust: The piston rises again, forcing out the burned gases through an open exhaust valve.

The cycle then repeats. Diesel engines are known for their efficiency and torque, making them ideal for powering trucks and heavy machinery.

How to Calculate Work Output for Diesel Cycle?

Work Output for Diesel Cycle calculator uses Work Output of Diesel Cycle = Pressure at Start of Isentropic Compression*Volume at Start of Isentropic Compression*(Compression Ratio^(Heat Capacity Ratio-1)*(Heat Capacity Ratio*(Cut-off Ratio-1)-Compression Ratio^(1-Heat Capacity Ratio)*(Cut-off Ratio^(Heat Capacity Ratio)-1)))/(Heat Capacity Ratio-1) to calculate the Work Output of Diesel Cycle, Work Output for Diesel Cycle refers to the net mechanical work obtained by the diesel engine during the power stroke. This work is calculated as the area enclosed by the pressure-volume (P-V) diagram of the diesel cycle. It represents the usable energy extracted from the fuel by the engine. It is a crucial parameter for determining the efficiency of the engine. Work Output of Diesel Cycle is denoted by Wd symbol.

How to calculate Work Output for Diesel Cycle using this online calculator? To use this online calculator for Work Output for Diesel Cycle, enter Pressure at Start of Isentropic Compression (P1), Volume at Start of Isentropic Compression (V1), Compression Ratio (r), Heat Capacity Ratio (γ) & Cut-off Ratio (rc) and hit the calculate button. Here is how the Work Output for Diesel Cycle calculation can be explained with given input values -> 0.511423 = 110000*0.65*(20^(1.4-1)*(1.4*(1.95-1)-20^(1-1.4)*(1.95^(1.4)-1)))/(1.4-1).

FAQ

What is Work Output for Diesel Cycle?
Work Output for Diesel Cycle refers to the net mechanical work obtained by the diesel engine during the power stroke. This work is calculated as the area enclosed by the pressure-volume (P-V) diagram of the diesel cycle. It represents the usable energy extracted from the fuel by the engine. It is a crucial parameter for determining the efficiency of the engine and is represented as Wd = P1*V1*(r^(γ-1)*(γ*(rc-1)-r^(1-γ)*(rc^(γ)-1)))/(γ-1) or Work Output of Diesel Cycle = Pressure at Start of Isentropic Compression*Volume at Start of Isentropic Compression*(Compression Ratio^(Heat Capacity Ratio-1)*(Heat Capacity Ratio*(Cut-off Ratio-1)-Compression Ratio^(1-Heat Capacity Ratio)*(Cut-off Ratio^(Heat Capacity Ratio)-1)))/(Heat Capacity Ratio-1). Pressure at Start of Isentropic Compression refers to the pressure exerted by the charge inside the wall of the cylinder at the start of the reversible adiabatic compression process in IC engine, Volume at Start of Isentropic Compression is the volume of the engine cylinder before reversible adiabatic process, keeping entropy as constant. It is essentially the swept volume of the cylinder, Compression ratio refers to how much the air-fuel mixture is squeezed in the cylinder before ignition. It's essentially the ratio between the volume of the cylinder at BDC to TDC, The Heat Capacity Ratio or, adiabatic index quantifies the relationship between heat added at constant pressure and the resulting temperature increase compared to heat added at constant volume & Cut-off ratio is the ratio of the cylinder volume at the start of compression stroke to the volume at the end of expansion stroke. It's a measure of piston's compression of the charge before ignition.
How to calculate Work Output for Diesel Cycle?
Work Output for Diesel Cycle refers to the net mechanical work obtained by the diesel engine during the power stroke. This work is calculated as the area enclosed by the pressure-volume (P-V) diagram of the diesel cycle. It represents the usable energy extracted from the fuel by the engine. It is a crucial parameter for determining the efficiency of the engine is calculated using Work Output of Diesel Cycle = Pressure at Start of Isentropic Compression*Volume at Start of Isentropic Compression*(Compression Ratio^(Heat Capacity Ratio-1)*(Heat Capacity Ratio*(Cut-off Ratio-1)-Compression Ratio^(1-Heat Capacity Ratio)*(Cut-off Ratio^(Heat Capacity Ratio)-1)))/(Heat Capacity Ratio-1). To calculate Work Output for Diesel Cycle, you need Pressure at Start of Isentropic Compression (P1), Volume at Start of Isentropic Compression (V1), Compression Ratio (r), Heat Capacity Ratio (γ) & Cut-off Ratio (rc). With our tool, you need to enter the respective value for Pressure at Start of Isentropic Compression, Volume at Start of Isentropic Compression, Compression Ratio, Heat Capacity Ratio & Cut-off Ratio 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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