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Mean effective pressure at a given compression ratio is maximum when the fuel-air ratio is

Mean effective pressure at a given compression ratio is maximum when the fuel-air ratio is Correct Answer Higher than stoichiometric

Concept:

  • Mean effective pressure is the average pressure inside the cylinder of an internal combustion engine based on the calculated or measured power.

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  • Mean effective pressure increases with compression ratio because of an increase in efficiency.
  • At a fixed compression ratio, maximum MEP occurs at a slightly rich fuel-air ratio similar to the case of maximum combustion temperature.

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