Comparison between Otto cycle and diesel cycle is summarized in Table 6.2b.
Table 6.2b Comparison Between Otto Cycle and Diesel Cycle
| Otto cycle | Diesel cycle |
|---|---|
| In Otto cycle, heat added and rejected at constant volume.For same compression ratio, Otto cycle is more efficient than that of diesel cycle.Otto cycle is used in S.I engines. | In diesel cycle, heat is added at constant pressure and heat is rejected at constant volume.Compression ratio of diesel cycle is more than that of Otto cycle.Diesel cycle is used in CI engines. |
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