(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 (V 4 ) 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 V 2 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 V 4 , 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 engines power at 5000 rpm

Question: (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 (V

(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.

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