Continue Diesel Cycle s=const Continue Diesel cycle efficiency: s=const For isentropic process3-→4： 1V2 V3 Vi=V,V k- Then, 1-1 =1- k。-) (const.k) ≥1 Thus,for a given r:nth.Diesel snth.ot! 上游充通大率 May15,2018 5 SHANGHAI BAO TONG LINIERSITYMay 15, 2018 5 Continue Diesel Cycle Continue Diesel cycle efficiency: k 1 k1 k1 k1 2 k 1 2 3 4 1 1 1 22 k1 k1 4 3 3 3 3 13 k1 k1 k 4 33 33 3 k c 1 22 22 2 For isentropic process 3 4: T V T V V V T TV T V V V V TV T TV VV V r T TV VV V                                    k 1 2 1 1 2 T v T v         (const. k) 4 1 3 2 k c k 1 th 2 1 c 1 T T T T 1 T Then, 1 T k 1 1 r 1 1 r k(r 1)                                    V p 1 2 4 3 V1=V4 qin V2 V3 Thus, for a given r : !   th,Diesel th,Otto