Diesel Efficiency Calculator

✖Compression ratio is ratio between volume of cylinder and combustion chamber.ⓘ Compression Ratio [r]			+10% -10%
✖Gamma is ratio of heat capacities at constant pressure and volume.ⓘ Gamma [Y]			+10% -10%
✖Cutoff Ratio is ratio of final to initial volume.ⓘ Cutoff Ratio [Cr]			+10% -10%

✖Diesel efficiency is a combustion process of a reciprocating internal combustion engine.ⓘ Diesel Efficiency [DE]

⎘ Copy

👎

Formula

✖

Diesel Efficiency

Formula

DE = 1 - \frac{1}{r^{Y} - 1} \cdot ({Cr}^{Y} - \frac{1}{Y \cdot (Cr - 1)})

Example

1.096396 = 1 - \frac{1}{{1.75}^{2.6} - 1} \cdot ({1.2}^{2.6} - \frac{1}{2.6 \cdot (1.2 - 1)})

Calculator

LaTeX

Reset

👍

Download Thermal Efficiency Formulas PDF PDF Image

Diesel Efficiency Solution

STEP 0: Pre-Calculation Summary

Formula Used

Diesel Efficiency = 1-1/(Compression Ratio^Gamma-1)*(Cutoff Ratio^Gamma-1/(Gamma*(Cutoff Ratio-1)))
DE = 1-1/(r^Y-1)*(Cr^Y-1/(Y*(Cr-1)))
This formula uses 4 Variables

Variables Used

Diesel Efficiency - Diesel efficiency is a combustion process of a reciprocating internal combustion engine.
Compression Ratio - Compression ratio is ratio between volume of cylinder and combustion chamber.
Gamma - Gamma is ratio of heat capacities at constant pressure and volume.
Cutoff Ratio - Cutoff Ratio is ratio of final to initial volume.

STEP 1: Convert Input(s) to Base Unit

Compression Ratio: 1.75 --> No Conversion Required
Gamma: 2.6 --> No Conversion Required
Cutoff Ratio: 1.2 --> No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

DE = 1-1/(r^Y-1)*(Cr^Y-1/(Y*(Cr-1))) --> 1-1/(1.75^2.6-1)*(1.2^2.6-1/(2.6*(1.2-1)))

Evaluating ... ...

DE = 1.09639616031208

STEP 3: Convert Result to Output's Unit

1.09639616031208 --> No Conversion Required

FINAL ANSWER

1.09639616031208 ≈ 1.096396 <-- Diesel Efficiency

(Calculation completed in 00.004 seconds)

You are here -

Home » Engineering » Mechanical » Thermodynamics » Thermal Efficiency » Diesel Efficiency

Credits

Created by Anirudh Singh

National Institute of Technology (NIT), Jamshedpur

Anirudh Singh has created this Calculator and 300+ more calculators!

Verified by Team Softusvista

Softusvista Office (Pune), India

Team Softusvista has verified this Calculator and 1100+ more calculators!

< Thermal Efficiency Calculators

Brayton Cycle Efficiency

Go Thermal Efficiency of Brayton Cycle = 1-1/(Pressure Ratio^((Gamma-1)/Gamma))

Carnot Cycle Efficiency of Heat Engine using Temperature of Source and Sink

Go Carnot Cycle Efficiency = 1-Initial Temperature/Final Temperature

Brake Thermal Efficiency

Go Brake Thermal Efficiency = Brake Power/Heat Energy

Compressor Efficiency

Go Compressor Efficiency = Kinetic Energy/Work

Diesel Efficiency Formula

Diesel Efficiency = 1-1/(Compression Ratio^Gamma-1)*(Cutoff Ratio^Gamma-1/(Gamma*(Cutoff Ratio-1)))
DE = 1-1/(r^Y-1)*(Cr^Y-1/(Y*(Cr-1)))

What is the diesel cycle?

The Diesel cycle is assumed to have constant pressure during the initial part of the combustion phase .This is an idealized mathematical model: real physical diesels do have an increase in pressure during this period, but it is less pronounced than in the Otto cycle

How to Calculate Diesel Efficiency?

Diesel Efficiency calculator uses Diesel Efficiency = 1-1/(Compression Ratio^Gamma-1)*(Cutoff Ratio^Gamma-1/(Gamma*(Cutoff Ratio-1))) to calculate the Diesel Efficiency, Diesel Efficiency in a cycle is a combustion process of a reciprocating internal combustion engine. In it, fuel is ignited by heat generated during the compression of air in the combustion chamber, into which fuel is then injected. Diesel Efficiency is denoted by DE symbol.

How to calculate Diesel Efficiency using this online calculator? To use this online calculator for Diesel Efficiency, enter Compression Ratio (r), Gamma (Y) & Cutoff Ratio (Cr) and hit the calculate button. Here is how the Diesel Efficiency calculation can be explained with given input values -> -0.728809 = 1-1/(1.75^2.6-1)*(1.2^2.6-1/(2.6*(1.2-1))).

FAQ

What is Diesel Efficiency?

Diesel Efficiency in a cycle is a combustion process of a reciprocating internal combustion engine. In it, fuel is ignited by heat generated during the compression of air in the combustion chamber, into which fuel is then injected and is represented as DE = 1-1/(r^Y-1)*(Cr^Y-1/(Y*(Cr-1))) or Diesel Efficiency = 1-1/(Compression Ratio^Gamma-1)*(Cutoff Ratio^Gamma-1/(Gamma*(Cutoff Ratio-1))). Compression ratio is ratio between volume of cylinder and combustion chamber, Gamma is ratio of heat capacities at constant pressure and volume & Cutoff Ratio is ratio of final to initial volume.

How to calculate Diesel Efficiency?

Diesel Efficiency in a cycle is a combustion process of a reciprocating internal combustion engine. In it, fuel is ignited by heat generated during the compression of air in the combustion chamber, into which fuel is then injected is calculated using Diesel Efficiency = 1-1/(Compression Ratio^Gamma-1)*(Cutoff Ratio^Gamma-1/(Gamma*(Cutoff Ratio-1))). To calculate Diesel Efficiency, you need Compression Ratio (r), Gamma (Y) & Cutoff Ratio (Cr). With our tool, you need to enter the respective value for Compression Ratio, Gamma & Cutoff Ratio and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.

Home

FREE PDFs

🔍 Search