Pv diagrams

i'm looking for help to a question that i have, i have tried every thing to find an answer to it. the qustion is "how would would an increase in fuel burned affect the PV daigram of a given engine.

i belief it has to do with changing of the pressure and volume figures on the PV diagram. if anybody would be able to help that would be great.


Science Advisor
Homework Helper
What determines the volume and volume changes of an engine? How is pressure produced?

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