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Air-Standard Otto Cycle Thermal Efficiency & Compression Ratio Calculator

Easily calculate and compute air-standard otto cycle thermal efficiency & compression ratio calculator with accurate equations, live formulas, and expert guidance.

Engine volumetric compression ratio.

Ratio of specific heats Cp/Cv (1.4 for air at standard temperature).

Ambient manifold air temperature.

Specific heat input from spark combustion.

Calculated Result
60.96 %

Otto Thermal Efficiency

Otto Thermal Efficiency

60.96 %

Thermal Efficiency Percent

60.96

Net Specific Work Kj Per Kg

853.4

End Compression Temp K

763.7

Peak Combustion Temp K

2713.5

60.96 — %

Calculation Breakdown

  1. Applied FormulaComputes the ideal thermodynamic thermal efficiency, peak cycle temperatures, and net specific work of spark-ignition gasoline engines based on the Otto cycle.\eta_{th} = 1 - r^{1 - \gamma}, \quad T_2 = T_1 r^{\gamma - 1}, \quad T_3 = T_2 + \frac{q_{in}}{c_v}

Otto Cycle Efficiency Metric Output

Interactive visualization based on your current inputs

Calculated Value
0.015304661Otto Thermal Efficiency

What Is the Air-Standard Otto Cycle Thermal Efficiency & Compression Ratio Calculator?

This tool computes air-standard otto cycle thermal efficiency & compression ratio calculator with high precision arithmetic.

How Does the Air-Standard Otto Cycle Thermal Efficiency & Compression Ratio Calculator Work?

Computes the ideal thermodynamic thermal efficiency, peak cycle temperatures, and net specific work of spark-ignition gasoline engines based on the Otto cycle.

Air-Standard Otto Cycle Thermal Efficiency & Compression Ratio Calculator Formula & Variables

The core mathematical equation utilized by this calculator is expressed as:

ηth=1−r1−γ,T2=T1rγ−1,T3=T2+qincv\eta_{th} = 1 - r^{1 - \gamma}, \quad T_2 = T_1 r^{\gamma - 1}, \quad T_3 = T_2 + \frac{q_{in}}{c_v}

Computes the ideal thermodynamic thermal efficiency, peak cycle temperatures, and net specific work of spark-ignition gasoline engines based on the Otto cycle.

How to Use the Air-Standard Otto Cycle Thermal Efficiency & Compression Ratio Calculator

  1. Enter your parameters into the designated input fields to calculate the result immediately.

Step-by-Step Example Calculation

Air-Standard Otto Cycle Thermal Efficiency & Compression Ratio Calculator Example

Input Values:

compressionRatioR:10.5
specificHeatRatioGamma:1.4
inletTempCelsius:25.0
heatAddedKjPerKg:1400.0
Worked Steps: Sample evaluation based on standard reference conditions.

Understanding Your Result

The calculated primary figure indicates the optimal or required %.

Factors That Affect the Result

  • Measurement tolerances, operational variance, and real-world conditions.

When Should You Use This Calculator?

  • Everyday budgeting, technical homework, professional estimation, and household projects.

Assumptions & Limitations

  • Assumes standard atmospheric or environmental parameters unless specified.

Frequently Asked Questions

Calculation Accuracy & Reference Note

Double-precision IEEE 754 arithmetic with validated empirical constants.

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