Decomposition Analysis of an Automotive Powertrain Design ...

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Index Variable Partition Description 78 c r 1 Compression ratio 79 d i 1 Intake valve diameter 80 d e 1 Exhaust valve diameter 81 n v 1 Number of valves 82 n c 1 Number of cylinders 83 i vo 1 Intake valve opening timing 84 i vc 1 Intake valve closing timing 85 e vo 1 Exhaust valve opening timing 86 e vc 1 Exhaust valve closing timing 87 i lift 1 Intake valve maximum lift 88 e lift 1 Exhaust valve maximum lift 89 C stiff 1 Valvetrain stiffness factor 90 d br 1 Diameter of rod bearing diameter 91 l br 1 Width of rod bearing 92 d bm 1 Diameter of main bearing 93 l bm 1 Width of main bearing 94 n bm 1 Number of main bearings 95 C s 1 Induction system discharge coefficient 96 C m 1 Manifold discharge coefficient 97 C p 1 Port discharge coefficient 98 L mi 1 Intake manifold runner length 99 D mi 1 Intake manifold runner diamter 100 L me 1 Exhaust manifold runner length 101 D me 1 Exhaust manifold runner diameter 102 R egr 1 Exhaust gas recirculation 103 R af 1 Air-fuel ratio 104 T acc 2 Accessory torque 105 T m 1 Temperature of charge in intake manifold 106 Z 1 Mach index 107 dp t 1 Tuning pressure 108 p it 1 Tuning manifold pressure 109 P imep 1 Indicated mean effective pressure 110 P fmep 1 Total friction mean effective pressure 111 P fpu 1 Pumping mean effective pressure 112 P fpr 1 Piston-ring interface friction mean effective pressure 113 P fmb 1 Main bearing frcition mean effective pressure 114 P fvt 1 Valvetrain friction mean effective pressure 115 P foil 1 Oil pump friction mean effective pressure 116 P fh2o 1 Water pump friction mean effective pressure 117 v type 1 Valve train type 118 P bmep 1 Brake mean effective pressure 119 R resf 1 Total residual fraction in engine
Index Variable Partition Description 120 dm f /dt 1 Fuel flow rate 121 dm nox /dt 1 NOx flow rate 122 η t 1 Thermal efficiency 123 S v 1 Surface-to-volume ratio 124 η v 1 Volumetric efficiency 125 T bd 2 Brake drag @ driving wheels 126 T bnd 2 Brake drag @ non-driving wheels
Page 1 and 2: UNIVERSITY OF MICHIGAN DEPARTMENT O
Page 3 and 4: epresentation facilitates decomposi
Page 5 and 6: of changes in these parameters on t
Page 7 and 8: The U.S. metro-highway fuel economy
Page 9 and 10: Powertrain Relationships The princi
Page 11 and 12: N ds = ξ fd N d (23) dN ds /dt =
Page 13 and 14: to be stalled (Rs = 0). Equation (3
Page 15 and 16: the surface-to-volume ratio at a vo
Page 17 and 18: intake and exhaust valve, and acros
Page 19 and 20: driveability. These values are stor
Page 21 and 22: τ dV τ 0-60 = τ :⌡ ⌠ dt dt =
Page 23 and 24: There are also several geometric co
Page 25 and 26: g 13 : ξ 1 / ξ 2 - 2.0 ≤ 0 Step
Page 27 and 28: x 2 h 2 (y, x 2 ) = 0 h 2 ( x 2 )=
Page 29 and 30: Master Problem Subproblem min f(y,
Page 31 and 32: 6 COORDINATED OPTIMIZATION SOLUTION
Page 33 and 34: educes fuel flow by 1.3%; the const
Page 35 and 36: Assanis, D.N., and Polishak, M. 198
Page 37 and 38: Patton, K.J., Nitschke, R.G., and H
Page 39 and 40: DECOMPOSITION ANALYSIS MODEL -BASED
Page 41 and 42: Master Problem Subproblem (i = 1, .
Page 43 and 44: 1 2 Impeller Stator Vortex flow dir
Page 45 and 46: Partitioned Graph Resultant FDT 111
Page 47 and 48: Table I Summary of Coordination Str
Page 49: Index Variable Partition Descriptio
Page 53 and 54: 23 Fnd Fnd - ( Wd M g - ∆Wd) (fro
Page 55 and 56: 66 67 68 69 70 71 72 73 74 75 76 77
Page 57 and 58: Appendix B: Parameters in Optimizat
Page 59 and 60: Impeller Driving Table B.4: Base to
Page 61 and 62: Table B.8: Accessory losses. Amps @

Decomposition Analysis of an Automotive Powertrain Design ...

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