Otto Cycle
An Otto cycle is an idealized thermodynamic cycle that describes the functioning of a typical spark-ignition piston engine.
The thermal efficiency equals 1 minus the compression ratio to the power of 1 minus the heat capacity ratio.
Formula
![Copy to Clipboard QuantityVariable[Subscript["η", "th"], "ThermalEfficiency"] == 1 - QuantityVariable["r", "Unitless"]^(1 - QuantityVariable["γ", "HeatCapacityRatio"])](https://www.wolframcloud.com/objects/resourcesystem/marketplacestorage/resources/bb6/bb675b44-7e0d-4160-97c8-ad095445b66d/Webpage/FormulaImage.png)
| symbol | description | physical quantity |
|---|---|---|
| ηth | thermal efficiency | "ThermalEfficiency" |
| r | compression ratio | "Unitless" |
| γ | heat capacity ratio | "HeatCapacityRatio" |
Forms
Examples
Get the resource:
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Get the formula:
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Use some values:
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