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TABLE OF CONTENTS (CONTINUED)PageAppendix C Derivative of two zone thermodynamics formulas 70based on equally pressure 77Appendix D MATLAB program for mathematical model of a four stroke cycle ofa spark ignition engine gasoline fueled with water injection system 87Biography 111vi
LIST OF TABLESTablePage3-1 Solutions for the molar coefficients of the combustion products variedform equivalence ratio at compression stroke 184-1 An assumption on engine specification for calculation ofmathematical models 294-2 The molar water injection-fuel ratio for calculation of mathematical models 30A-1 Maximum Available Energy of Combustion, Lower Heat of CombustionThe stoichiometric air-fuel 62A-2 Curve fit coefficients and formula for calculating the thermodynamicsproperties of various ideal gasses, specific heat at constant pressure, enthalpy,and entropy for temperature range ( 300 > T < 1000 K)63A-3 Curve fit coefficients for calculating the thermodynamics properties of variousideal gasses, specific heat at constant pressure, enthalpy, and entropy fortemperature range (1000 < T < 3000 K)64A-4 Curve fit coefficients and formula for calculating the thermodynamicsproperties of selected fuels, (300 ≥T≤3000 K)65A-5 Curve fit coefficients and formula for calculating the equilibrium constants 66vii
Page 1 and 2: ANALYSIS OF WATER INJECTION INTO HI
Page 3 and 4: Thesis CertificateThe Graduate Coll
Page 5 and 6: ชื่อ : นายปรม
Page 7: TABLE OF CONTENTSPageAbstract (in E
Page 11 and 12: LIST OF FIGURES (CONTINUED)FigurePa
Page 13 and 14: LIST OF ABBREVIATIONS, SYMBOLS AND
Page 15 and 16: CHAPTER 1INTRODUCTION1.1 Background
Page 17 and 18: 31.6.6 Water injected is assumed to
Page 19 and 20: 6for these working fluid models can
Page 22 and 23: CHAPTER 3METHODOLOGY FOR ANALYSIS O
Page 24 and 25: 11perform the necessary calculation
Page 26 and 27: 13h b P T w−0.2 0.8 −0.55 0.8=
Page 28 and 29: 15the procedure required Nitrogen(
Page 30 and 31: 171N22 NEq.3-461 1O+2N2 NOEq.3-472
Page 32 and 33: 19∂y1 cy ∂y1 cy ∂y 1 c ∂y 1
Page 34 and 35: 211/2( cy )∂y ∂∂c ∂y∂T
Page 36 and 37: 23[ A][ ∂y/ ∂ P] + [ ∂f / ∂
Page 38 and 39: 25⎛ • • •ln ln ⎞⎛⎞( )
Page 40 and 41: 27( θ= −π)θ>θ bθ>θ W( θ=π
Page 42 and 43: CHAPTER 4RESULTS AND DISCUSSIONThis
Page 44 and 45: 31FIGURE 4-1 Comparison of an actua
Page 46 and 47: 33FIGURE 4-4 Schematic of the port
Page 48 and 49: 35Temperature (K)250023002100190017
Page 50 and 51: 37cylinder temperature. So, a more
Page 52 and 53: 39Thermal efficiency (%)43424140393
Page 54 and 55: 41Theoretically, the high useful co
Page 56 and 57: 43Thermal efficiency (%)46454443424
Page 58 and 59:
45injection-fuel ratio increases gr
Page 60 and 61:
47Thermal efficiency (%)44434241403
Page 62 and 63:
49When considering relative tempera
Page 64 and 65:
51Temperature (K)240021001800150012
Page 66 and 67:
53When considering relative tempera
Page 68 and 69:
55Temperature (K)220019001600130010
Page 70 and 71:
CHAPTER 5CONCLUSIONS AND SUGGESTION
Page 72 and 73:
REFERENCES1. Ricardo, H.R. The High
Page 74:
APPENDIX ADerivative equations of i
Page 78 and 79:
64TABLE A-3 Curve fit coefficients
Page 80 and 81:
66TABLE A-5 Curve fit coefficients
Page 82 and 83:
68The following is the derivative v
Page 84 and 85:
70From the definition of entropyh =
Page 86 and 87:
72• ⎛ ⎞ • ⎛Tb∂u •b∂
Page 88 and 89:
74• ⎛1 ⎞ •∂u ⎛∂ ∂
Page 90 and 91:
76⎛ • • •ln ln ⎞⎛⎞( )
Page 92 and 93:
78The following is the derivative v
Page 94 and 95:
80From the definition of entropy h
Page 96 and 97:
82• ⎛ Tb u ⎞ • • ⎛bmTb
Page 98 and 99:
84• ⎛1 ⎞ • •∂u ⎛ ⎞
Page 100 and 101:
86• • • ⎛ u ⎞bmb( hW ub)
Page 102 and 103:
88Appendix D MATLAB program scripts
Page 104 and 105:
90[thetawater,pTbWQlHl2]=ode45('Rat
Page 106 and 107:
92-0.69353550E-14 -0.14245228E+05 0
Page 108 and 109:
940.21*(1-phi) 0 0]';dcdT=0;else %
Page 110 and 111:
96dfdp=zeros(4,1);dYdT=zeros(11,1);
Page 112 and 113:
98dcdT(1)=-dKdT(1)*sqrt(patm)/K(1)^
Page 114 and 115:
100Iter=Iter+1;[hb,u,v,s,Y,cp,dlvlT
Page 116 and 117:
102yprime(2)=-Const1/cpb/x*Qconvb+v
Page 118 and 119:
104masswaterin=massfuel*mwpmf;% Tot
Page 120 and 121:
106savefile = 'Volume.mat';RTWV=RTW
Page 122 and 123:
108p=pTarray(:,1);T=pTarray(:,2);hc
Page 124 and 125:
110gamma_der_tautau = 0;for i = 1 :
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