Heat and Thermodynamics

9.13 Efficiency of Otto Cycle

The indicator diagram for an Otto cycle is as shown in Fig. 9.18. It may be assumed that the work done in filling the cylinder with charge represented by EA and that of exhausting the cylinder along AE balance each other.

 

 

Fig. 9.18 Otto cycle

 

We shall represent the volumes and temperatures at points A, B, C, D by V_A, V_B, V_C, V_D and T_A, T_B, T_C, T_D, respectively.

Table 9.5 gives full description of the different operations.

 

Table 9.5 Characteristics of different operations of Otto cycle

 

The work done by ...