Practical diesel-engine combustion analysis

Title:

Personal Author:

Hsu, Bertrand D.

Publication Information:

Warrendale, Pa. : Society of Automotive Engineers, 2002

ISBN:

9780768009149

Subject Term:

Diesel motor -- Combustion

Diesel motor -- Fuel systems

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Library	Item Barcode	Call Number	Material Type	Item Category 1	Status
Searching... PSZ JB	30000010039877	TJ797 H75 2002	Open Access Book	Book	Searching... Unknown
Searching... PSZ JB	30000010046787	TJ797 H75 2002	Open Access Book	Book	Searching... Unknown

This book examines some basic characteristics of diesel engine combustion process, and describes the commonly used tool to analyze combustion - heat release analysis. In addition, it describes the performance changes that might be encountered in the engine user environment, with a goal of helping the reader analyze his own practical combustion problems.

Acknowledgments	p. vii
Preface	p. ix
I Combustion and Fuel-Injection Processes in the Diesel Engine	p. 1
1.1 Diesel-Engine Fuel Injection and Spray Combustion	p. 2
1.1.1 Kinetically and Diffusion-Controlled Combustion Phenomena in the Diesel Engine	p. 2
1.1.2 Diesel-Engine Fuel-Injection Process	p. 3
1.1.3 Spray Combustion in the Diesel Engine	p. 6
1.2 DI Diesel-Engine Combustion Process	p. 7
1.2.1 General Combustion Process	p. 7
1.2.2 Ignition Delay Period	p. 8
1.2.3 Kinetic or Premixed Burning Period	p. 9
1.2.4 Diffusion Burning Period	p. 9
1.2.5 After Burning Period	p. 10
References	p. 10
II Heat Release and Its Effect on Engine Performance	p. 13
2.1 Calculating Heat Release	p. 13
2.1.1 Heat-Release Calculation Basics	p. 15
2.1.2 Cylinder-Charge Molar Change during Combustion	p. 17
2.1.3 Cylinder-Pressure Data Smoothing and Calculation Interval	p. 19
2.2 Heat Release, Relative Cycle Efficiency, and Peak Cylinder Pressure	p. 21
2.2.1 Air-Cycle Analysis	p. 21
2.2.2 Case of Combustion before Top Dead Center (TDC)	p. 22
2.2.3 Case of Combustion after TDC	p. 24
2.2.4 Relative Cycle Efficiency and Peak Cylinder-Firing Pressure	p. 26
2.3 Pressure Data Collection for Heat-Release Calculation	p. 30
2.3.1 Synchronization of Cylinder Pressure and Volume (TDC Correction)	p. 30
2.3.2 Flush-Mounting the Pressure Transducer	p. 33
2.3.3 Some Other Aspects Associated with Cylinder-Pressure Measurements	p. 35
References	p. 37
III Combustion Analysis Associated with Fuel Efficiency and Smoke	p. 39
3.1 Fuel-Injection Related	p. 39
3.1.1 Injector Hole Length versus Diameter (L/D) Ratio	p. 39
3.1.2 Fuel-Injection Pressure	p. 42
3.1.3 Injector-Flow Rate	p. 45
3.1.4 Secondary Injection	p. 47
3.1.5 Injector-Sac Volume	p. 50
3.2 Combustion-Chamber Related	p. 53
3.2.1 Combustion-Chamber Bowl Shape	p. 53
3.2.2 Injector-Spray Position	p. 56
3.2.3 Combustion-Chamber Insulation	p. 58
References	p. 60
IV Combustion Analysis Associated with NO[subscript x] and Roughness	p. 61
4.1 NO[subscript x] Emissions	p. 61
4.1.1 NO[subscript x] Formation	p. 61
4.1.2 Injection-Timing Retard	p. 64
4.1.3 Lower Inlet Air Temperature	p. 69
4.1.4 Higher Compression Ratio, Lower Inlet Air Temperature, and Injection-Timing Retard	p. 73
4.1.5 Water-Emulsified Diesel-Fuel Combustion	p. 77
4.1.6 Higher Fuel-Injection Pressure	p. 80
4.2 Combustion Roughness (Noise Emissions)	p. 85
4.2.1 Origin of Combustion Roughness	p. 85
4.2.2 Measurement of Combustion Roughness	p. 86
4.2.3 Sample of Combustion Roughness Comparison	p. 88
References	p. 91
V Combustion Analysis of Various Operation Conditions	p. 93
5.1 Effects of Fuel	p. 93
5.1.1 Fuel Temperature Effect	p. 93
5.1.2 Fuel Composition Effect	p. 98
5.2 Effects of Inlet Air Manifold Condition	p. 105
5.2.1 Inlet Manifold Air Temperature (MAT) Effect	p. 105
5.2.2 Inlet Manifold Air Pressure (MAP) Effect	p. 108
References	p. 110
VI Alternate Fuels Combustion Analysis	p. 113
6.1 The High-Pressure-Injection Natural-Gas-Fueled Diesel Engine	p. 113
6.2 "H-Process" Natural-Gas Dual-Fueled Diesel-Engine Combustion	p. 116
6.3 Coal-Water-Slurry-Fueled Diesel-Engine Combustion	p. 123
6.3.1 CWS Ignition	p. 125
6.3.2 CWS Combustion	p. 127
6.3.3 Emissions of Coal-Fueled Engine Combustion	p. 129
6.3.4 CWS Fuel Spray and Wall Impingement	p. 129
6.3.5 Conclusions	p. 130
References	p. 131
Index	p. 135
About the Author	p. 147

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