Otto Cycle Calculator

This calculator calculates equations commonly used for the Otto Power Cycle.
Inputs﻿﻿k
:4.00​
﻿
﻿﻿r(p)
:5.00​
﻿
﻿﻿V(0)
:60.00atm​
﻿
﻿﻿V(1)
:125.00atm​
﻿
﻿﻿V(2)
:60.00atm​
﻿
﻿﻿V(3)
:100.00atm​
﻿
﻿﻿V(4)
:80.00atm​
﻿
Output﻿﻿r(k) (eqn 1)
:2.08​
﻿
﻿
rk, equation 1=V1V2r_{k,\ equation\ 1}=\frac{V_1}{V_2}rk, equation 1​=V2​V1​​
﻿﻿r(k) (eqn 2)
:101.00​
﻿
﻿
rk, equation 2=1+%c%cr_{k,\ equation\ 2}=\frac{1+\%c}{\%c}rk, equation 2​=%c1+%c​
﻿﻿r(k) (eqn 3)
:0.80​
﻿
﻿
rk, equation 3=rer_{k,\ equation\ 3}=r_erk, equation 3​=re​
﻿﻿r(e)
:0.80​
﻿
﻿
﻿
re=V4V3r_e=\frac{V_4}{V_3}re​=V3​V4​​
﻿﻿c
:1.00​
﻿
﻿
c=V2V0c=\frac{V_2}{V_0}c=V0​V2​​
﻿﻿η
:0.89​
﻿
﻿
η=1−1rkk−1\eta=1-\frac{1}{r_k^{k-1}}η=1−rkk−1​1​
﻿﻿MEP
:16.03​
﻿
﻿
MEP=[(rp−1)(rkk−1)](k−1)(1−1rk)MEP=\frac{[(r_p-1)(r_k^{k-1})]}{(k-1)(1-\frac{1}{r_k})}MEP=(k−1)(1−rk​1​)[(rp​−1)(rkk−1​)]​
The following are the variables for the equations
Otto CycleIn using the calculators and inputting values above, refer to Figure 1 and the different states of the Otto cycle.
﻿
Figure 1: Pressure vs Volume Graph for an Otto Cycle
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