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What is the difference between Otto engine and Carnot engine

  1. Nov 29, 2016 #1
    What is the key difference between Otto engine and Carnot engine?
    Other than it is reversible or not, it seems to me they are so similar.
  2. jcsd
  3. Nov 29, 2016 #2


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    Staff: Mentor

    Have you looked at a PV diagram for both? What is the maximum efficiency of both cycles?
  4. Nov 29, 2016 #3
    efficiency is max for carnot engine...
    the pv diagram looks a little bit different shape.
    however, why?
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