EngiRef / Formulas
Otto Cycle Efficiency
Thermal efficiency of ideal Otto cycle
Cycles
Source Details
Id
thermo-otto-efficiency
Name
Otto Cycle Efficiency
Discipline
thermodynamics
Category
Cycles
Latex
\eta = 1 - \frac{1}{r^{\gamma-1}}
Description
Thermal efficiency of ideal Otto cycle
Conditions
Ideal spark-ignition engine cycle
Variables
[
{
"symbol": "η",
"name": "Efficiency",
"unit": "",
"siUnit": ""
},
{
"symbol": "r",
"name": "Compression Ratio",
"unit": "",
"siUnit": ""
},
{
"symbol": "γ",
"name": "Specific Heat Ratio",
"unit": "",
"siUnit": ""
}
]Solve For
η, r
Tags
otto, cycle, efficiency, compression, engine
Is Custom
false