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基于HCNG发动机的NO_x排放预测模型开发和应用

摘要第3-4页
abstract第4页
CHAPTER 1 INTRODUCTION第17-24页
CHAPTER 2 EXPERIMENTATION第24-30页
    2.1 Experimental apparatus第24-25页
    2.2 NO_x reduction techniques by experimentations第25-30页
        2.2.1 By lean burn mixture第25-28页
        2.2.2 By spark variation第28-30页
CHAPTER 3 VALIDATION OF THE PRESSURE第30-57页
    3.1 Quasi-dimensional combustion model第30-34页
        3.1.1. Main model第30-31页
        3.1.2. Sub-model第31-34页
            3.1.2.1 Mass burning rate (Entrainment model)第31-32页
            3.1.2.2 Laminar burning speed第32-33页
            3.1.2.3 Adiabatic flame temperature第33页
            3.1.2.4 Flame Delay第33页
            3.1.2.5 Area of the flame front第33页
            3.1.2.6 Heat transfer coefficient第33-34页
    3.2 Calibration第34-40页
        3.2.1 Procedure for Calibration第34-35页
        3.2.2 Calibration of the Dongfeng engine第35-36页
        3.2.3 Calibration of the WP6 Engine第36-38页
        3.2.4 Comparison of the Calibration of the Coefficient of the WP6 and Dongfeng Engine第38-40页
            3.2.4.1 Turbulent intensity coefficient第38-39页
            3.2.4.2 Taylor length scale coefficient第39页
            3.2.4.3 Ignition lag co-efficients第39-40页
    3.3 Pressure data第40-50页
        3.3.1 Pressure data of the Dongfeng engine第40-41页
        3.3.2 Pressure profile of the Dongfeng engine第41-43页
        3.3.3 Pressure data of the WP6 engine第43-46页
        3.3.4 Pressure profile of the WP6 engine第46-49页
        3.3.5 Comparison of pressure curves by variation of the spark timing第49-50页
    3.4 Sensitivity of some important parameter for simulation第50-57页
        3.4.1 Time of delay第50-52页
        3.4.2 LT Micro-scale length-L_T第52-53页
        3.4.3 SL (Laminar burning speed)第53-54页
        3.4.4 Turbulent velocit第54-55页
        3.4.5 Theoretical calculation of the characteristics time第55-57页
CHAPTER 4 NO_x VALIDATION第57-100页
    4.1 NO_x mechanisms第57-70页
        4.1.1 Thermal NO mechanisms第57-61页
        4.1.2 Prompt NO第61-65页
        4.1.3 NO due to N_2O mechanism第65-68页
        4.1.4 Percentage Contribution of NO第68-70页
    4.2 Validation of the NO_x model第70-87页
        4.2.1 Validation model on the basis of the TD第70-73页
            4.2.1.1 On the basis of the temperature duration第70-72页
            4.2.1.2 Range of the TD model第72-73页
        4.2.2 Validation model on the basis of the three-zone第73-83页
            4.2.2.1 The three zone model第73-80页
            4.2.2.2 Validation of the NO_x第80-82页
            4.2.2.3 Range of Three Zone Space Model第82-83页
        4.2.3 Comparison of the different NO_x model第83-87页
            4.2.3.1 By CFD(literature Review)第83-84页
            4.2.3.2 By Dawyer Model第84-85页
            4.2.3.3 Kurt model第85页
            4.2.3.4 Comparison of the three models第85-87页
    4.3 NO_x reduction techniques第87-96页
        4.3.1 Lean Burn Mixture Validation第87页
        4.3.2 By Spark timing (Validation)第87-88页
        4.3.3 Exhaust gas recirculation第88-96页
            4.3.3.1 Model第88-90页
            4.3.3.2 Hydrogen Percentage and EGR第90-91页
            4.3.3.3 Throttle Position and EGR第91-94页
            4.3.3.4 Spark Timing and EGR第94-96页
    4.4 NO_x model by curve fitting第96-100页
        4.4.1 AFR as a factor第96页
        4.4.2 MAP as a factor第96-97页
        4.4.3 Hydrogen percentage as a factor第97页
        4.4.4 Error correction第97-98页
        4.4.5 Validation第98-100页
CHAPTER 5 CONCLUSION第100-102页
FUTURE RECOMMENDATION第102-103页
REFERENCES第103-111页
Acknowledgement第111-112页
Personal Statement第112-113页
Appendix第113-130页
Resume第130-131页
附件第131-132页

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