Question: A dual cycle attempts to model an SI engine more realistically. It models the combustion process in two steps. First some heat is added at

A dual cycle attempts to model an SI engine more realistically. It models the combustion process in two steps. First some heat is added at constant volume, then the rest is added at constant pressure. Draw the dual cycle in the pV- and ST-planes. How are the Otto and Diesel cycles related to the dual cycle?

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