In an internal combustion (reciprocating) engine, assuming that the specific heats are varying due to the temperature, if the compression starts at 95 kPa pressure and 290 K temperature, the expansion starts at 1800 K, and the compression ratio is 20,

a) Calculate the thermal efficiency of the ideal Otto cycle.

b) Calculate the mean effective pressure (MEP).

c) Calculate the thermal efficiency of the ideal Diesel cycle.

d) Find out the cut-off ratio of the ideal Diesel cycle.

Answer rating: 100% (QA)

To calculate the values requested well use the ideal Otto and Diesel cycles assuming air as the working fluid The ideal cycles assume ideal gas behavi... View the full answer