OTTO CYCLE PROCESSES

1-2 Isentropic Compression

2-3 Constant Volume Heating

3-4 Isentropic Expansion

4-1 Constant Volume Heating

OTTO CYCLE EFFICIENCY ($η_.otto$)

$$η_.otto ={\frac{Heat supplied-Heat rejected}{Heat supplied}} \\$$ $$ = \cfrac {m Cv (T3-T2) - m Cv (T4-T1)} {m Cv (T3-T2)}$$ $$=\cfrac{T3-T2-(T4-T1)}{T3-T2} \$$

$$=1-\frac{(T4-T1)}{T3-T2}\rightarrow \require{enclose} {\enclose{circle}{1}}\\ $$

Now,we have, Compression ratio, …