文摘
英文文摘
论文说明:Nomenclatur
声明
CHAPTER 1 INTRODUCTION
1.1 Introduction
1.1.1 World emission standards
1.1.1 Measuring Absolute Fuel Efficiency
1.2 Current and Near-Future Engine Technology
1.2.1 Lean Burn
1.2.2 Stratified Charge Combustion
1.2.3 Direct Injection
1.2.4 Controlled Auto-Ignition
1.3 Advanced Diagnostics for Study of Combustion Mechanics
1.3.1 Laser Spectrum Diagnostics is Advanced Tools on Combustion Study
1.3.2 Elementary Conception of Laser Spectrum Diagnostics
1.4 Laser Diagnostics for Engine Combustion
1.4.1 Coherent Anti-strokes Raman Spectroscopy(CARS)
1.4.2 Laser Induced Fluorescence Technique
1.4.3 Absorption Spectroscopy
1.4.4Laser-Induced Phoshorescence
1.5 Project Objective
1.6 Thesis Structure
CHAPTER 2 DESIGN OF SIDE-INDUCTION OPTICAL ENGlNE
2.1 Introduction
2.2 Basic Design of the Engine
2.2.1 Concept Design of Cylinder Head
2.2.2 Selection of Original Engine
2.2.3 Design of Cylinder Head
2.3 Other Modification of Engine
2.3.1 Block
2.3.2 Intake System and Fuel Supply System
2.3.3 Piston
2.3.4 Camshaft and Valve Gear
2.3.5 Optical Windows
2.3.6 Spark Plug
2.4 Control System
2.4.1 Engine Test Bed
2.4.2 Spark and Laser Timing control Box
2.4.3 Fuel Injection
2.4.4 Temperature Monitoring and Control
2.5 Data-Acquisition and Heat Release Analysis
2.5.1 Data-acquisiton
2.5.2 Heat Release
2.5.3 Exhaust Gas Analysis
2.6 Intial Engine Testing
2.7 Acquisition of Stratified and Homogenous Charge
2.8 Summary
CHAPTER 3 PLANAR LASER INDUCED FLUORESCENCE AND CALIBRATION
3.1 Introduction
3.2 Principles of Fluorescence
3.3 Suitable Fuel and Dopant Selection
3.3.1 Requirement for a Dopent
3.3.2 Selection of Dopant
3.3.3 Temperature and Pressure Dependence
3.4 Experimental PLIF Setup
3.4.1 Selection of Suitable Laser and ICCD Camera
3.4.2 Transmitting Optics
3.4.3 Engine Adaptations for Optical Measurement
3.4.4 Experimental Method
3.5 Quantitative AFR Measurement
3.6 Temperature Correction
3.7 Summary
4.1 Introduction
4.2 Experimentation
4.2.1 Test Procedures
4.2.2 Determination of Firing Lambda
4.2.3 Data Synchronization
4.3 Charge Structure and Heat Release Analysis
4.3.1 PLIF images
4.3.2 Heat-Release Analysis
4.4 Exhaust Emissions
4.5 Summary
5 LASER INDUCED PHOSPHORESCENCE THERMOGRAPHY AND CALIBRATION
5.1 Introduction
5.2 Principles of phosphorescence
5.3The nature of phosphor
5.4 Theoty of LIP thermometry
5.4.1 Line-intensity based approaches
5.4.1 Decay time method
5.4 Choice of phosphor and laser
5.5 Systemic calibration
5.5.1 Test cell
5.5.2 Image doubler
5.5.3 Calibration
5.6 Summary
6 TWO DIMENSlONAL GAS-PHASE TEMPERATURE MEASUREMENTS lN ENGINE COMBUSTION USING PHOSPHOR THERMOMETRY
6.1 Induction
6.2 Setup and Synchronization
6.2.1 Setup
6.2.2 Synchronization
6.2.3 Phosphor seeding system
6.2.4 Measurement area
6.2 Temperature meaurement of compression stroke
6.2.1 Temperature distribution
6.2.1 Histograms of temperature distribution
6.3 Combutsion temperature measurements using LIP
6.3.1 2D temperature distribution
6.4.3 Compare between LIP results with numerical results
6.4.4Discussion
6.5 Summary
7 CONCLUSIONS
7.1 Main conclusions
7.2 Innovations of thesis
7.3 Suggests for future study
Reference
Acknowledgement
PAPER PUBLISHING LIST DURlNG PH.D STUDY
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