(6 points) An ideal Diesel cycle operates with a compression ratio of 14 and a cutoff ratio of 2.1. At the beginning of the compression process, the air is at 14.8 psia and 73F. Accounting for variable specific heats with temperature, determine: the maximum temperature during the cycle F the maximum pressure during the cycle psia the specific net work output Btu/lbm the mean effective pressure (MEP) for the cycle 106.07 psia the thermal efficiency 53.7 % What is the thermal efficiency of this Diesel cycle if the cold-air standard assumption is used? %