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  3. an ideal otto engine has a compression ratio of 10

An ideal Otto engine has a compression ratio of 10 and uses air as the working...

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Mechanical Engineering

An ideal Otto engine has a compression ratio of 10 and uses airas the working fluid. The state of air at the beginning of thecompression process is 100 kPa and 27 0C. The maximumtemperature in the cycle is 2100K. (R=0.287 for air) (usingvariable specific heat)

  1. Draw the P-v diagram of the Otto cycle
  2. Determine the specific internal energies at the beginning andthe end of the compression,
  3. Determine the specific internal energies before and after theexpansion
  4. Determine the specific heat input, heat rejection and net-workoutput.
  5. Determine the thermal efficiency.
  6. If the amount of air in one cylinder at the beginning ofcompression is 500 cm3, how much power can the enginedeliver for an 8 cylinder engine running at 2000rpm?

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