انوا S=C SEC Problem 5 (30 points) Car manufacturers has recently started to modify their gasoline engines to operate an

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انوا S=C SEC Problem 5 (30 points) Car manufacturers has recently started to modify their gasoline engines to operate an Atkinson cycle instead of an Otto cycle. Consider a case in which T1= 298 K, P) = 1 bar, the compression ratio r = v1/v2 = 9 and expansion ratio re = v4/v3=13. Determine: a. The temperatures T2, T3 and 14. b. The net work of the cycle and the amount of heat added. c. The efficiency of the cycle. Compare it with the efficiency of an Otto cycle having the same compression ratio. 1-2: isentropic compression d. The mean effective pressure (MEP) of the 2-3: isochoric heat addition cycle. 3-4: isentropic expansion e. Sketch the Atkinson cycle on a T-s diagram. 4-1: isobaric heat rejection The working fluid is air (perfect gas) with R=287J/kg K and k=1.4. V