Diesel Cycle Efficiency Calculator

Efficiency (η):

Compression Ratio (r):

Heat Capacity Ratio (γ):

Cutoff Ratio (ρ):

How This Is Calculated

$$ \eta = 1- \frac{1}{r^{\gamma - 1}} \left( \frac{\rho^\gamma - 1}{\gamma (\rho - 1)} \right) $$ where:

η = Efficiency (Dimensionless)

r = Compression Ratio (Dimensionless)

γ = Heat Capacity Ratio (Dimensionless)

ρ = Cutoff Ratio (Dimensionless)

Assumptions

The working fluid behaves as an ideal gas.
Compression and expansion stages are adiabatic.
There are no heat losses to surroundings.
Specific heats remain constant.

Related Calculators

Diesel Cycle Cutoff Ratio

Diesel Cycle Heat

Diesel Cycle Work