(Solved): An air standard Diesel cycle has a compression ratio of \( r=17.9 \) and a cutoff ratio of rc \( = ...

An air standard Diesel cycle has a compression ratio of \( r=17.9 \) and a cutoff ratio of rc \( =2 \).9. The temperature and pressure at the beginning of the compression stroke are \( 284.17 \mathrm{~K} \) and \( 145.5 \mathrm{kPa} \) respectively. At the end of the heat addition stroke, the temperature is \( 1919.6 \mathrm{~K} \). Assume \( k=1.6 \) and calculate the pressure at the end of the isentropic expansion stroke in \( \mathrm{kPa} \). a. \( 329.78 \) b. \( 1561.04 \) c. \( 3636.21 \) d. \( 824.09 \) e. None of the above