(Requires results from Problem 11.3) Consider the same engine as in Problem 11.3 but now run as an Atkinson cycle. The volume after expansion (V₄) is still 2 L, but the volume before compression (V_1b) is 1.54 L. The compression ratio is still 9.6:1, so the minimum volume is V₂ = 0.16 L. What is the expansion ratio? Assuming that the amount of air and fuel are both reduced by the ratio of V_1b/V₄, find the work done in expansion, W_{34}, the work required by compression, W_{1b2}, and the energy input from combustion Q_{23}. Compute the efficiency and the engine’s power at 5000 rpm.