122. The charge in a Diesel engine consists of 18.34 grams of fuel, with lower heating value of

42,571 kJ/kg, and 409 grams of fuel and products of combustion. At the beginning of

compression, T1 = 60°C. Let rk = 14. For constant cp = 1.11 kJ/kg-°C, what should be the cut-off

ratio in the corresponding ideal cycle?

A. 2.05 B. 2.34

C. 5.34 D. 2.97