A diesel engine has a compression ratio of 22 : 1. The conditions in the cylinder at the start of compression are p = 101.3 kPa and T = 325 K. Calculate the pressure and temperature at the end of...

A diesel engine has a compression ratio of 22 : 1. The conditions in the cylinder at the start of compression are p = 101.3 kPa and T = 325 K. Calculate the pressure and temperature at the end of compression, assuming the compression process is isentropic: r Diesel engine

(a) ~ssume the cylinder contains an ideal gas with y = 1.4 and R = 287 J/kg . K. - Hot Rankine cycle boiler cooled diesel diesel exhaust exhaust 400 KI

(b) Assume the cylinder contains air which may be regarded as a semi perfect gas (use the gas tables).

(c) Compare the work of compression in (a) and (b) above. In practice, heat losses reduce the final compression temperature by 100 K. For a diesel engine operating at an equivalence ratio_ of 0.75 (full load):

(d) Calculate the ratio of heat loss during compression to the fuel energy added per cycle.