Question 8.40: In an engine working on the Otto cycle between given lower a...

Applied Thermodynamics

In an engine working on the Otto cycle between given lower and upper limits of absolute temperature, $T_{1} and T_{2}$ respectively, show that for maximum work to be done per kg, the ratio of compression is given by :

r = $( \frac{T_{3}}{T_{1}})^{1.25}$

where, γ = Ratio of specific heats = 1.4

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