9781118533314

Since the publication of the Second Edition in 2001, there have been considerable advances and developments in the field of internal combustion engines. These include the increased importance of biofuels, new internal combustion processes, more stringent emissions requirements and characterization, and more detailed engine performance modeling, instrumentation, and control. There have also been changes in the instructional methodologies used in the applied thermal sciences that require inclusion in a new edition. These methodologies suggest that an increased focus on applications, examples, problem-based learning, and computation will have a positive effect on learning of the material, both at the novice student, and practicing engineer level. This Third Edition mirrors its predecessor with additional tables, illustrations, photographs, examples, and problems/solutions. All of the software is ‘open source’, so that readers can see how the computations are performed. In addition to additional java applets, there is companion Matlab code, which has become a default computational tool in most mechanical engineering programs.

Colin R. Ferguson was the author of the first edition of Internal Combustion Engines in 1986, and was listed on the 2001 second edition for continuity. He did not participate in the second edition, and for continuity was listed in the second edition as an affiliate faculty member in Mechanical Engineering at Colorado State University. He is listed in this third edition again for continuity.

Allan T Kirkpatrick is Professor of Mechanical Engineering at Colorado State University, USA.? He obtained his Ph. D in Mechanical Engineering in 1981 from Massachusetts Institute of Technology, and his current society memberships include American Society of Mechanical Engineers, and Society of Automotive Engineers (SAE). He is the author of numerous journals articles and conference proceedings, and is the co-author of Internal Combustion Engines, Second Edition (Wiley).

Preface xi

Acknowledgments xiii

1. Introduction to Internal Combustion Engines 1

1.1 Introduction 1

1.2 Historical Background 4

1.3 Engine Cycles 5

1.4 Engine Performance Parameters 9

1.5 Engine Configurations 16

1.6 Examples of Internal Combustion Engines 23

1.7 Alternative Power Plants 26

1.8 References 29

1.9 Homework 30

2. Heat Engine Cycles 32

2.1 Introduction 32

2.2 Constant Volume Heat Addition 33

2.3 Constant Pressure Heat Addition 36

2.4 Limited Pressure Cycle 37

2.5 Miller Cycle 39

2.6 Finite Energy Release 41

2.7 Ideal Four-Stroke Process and Residual Fraction 54

2.8 Discussion of Gas Cycle Models 62

2.9 References 63

2.10 Homework 64

3. Fuel, Air, and Combustion Thermodynamics 66

3.1 Introduction 66

3.2 Thermodynamic Properties of Ideal Gas Mixtures 66

3.3 Liquid--Vapor--Gas Mixtures 72

3.4 Stoichiometry 76

3.5 Low-Temperature Combustion Modeling 79

3.6 General Chemical Equilibrium 84

3.7 Chemical Equilibrium using Equilibrium Constants 89

3.8 References 94

3.9 Homework 94

4. Fuel--Air Combustion Processes 97

4.1 Introduction 97

4.2 Combustion and the First Law 97

4.3 Maximum Work and the Second Law 103

4.4 Fuel--Air Otto Cycle 108

4.5 Four-Stroke Fuel--Air Otto Cycle 113

4.6 Homogeneous Two-Zone Finite Heat Release Cycle 116

4.7 Comparison of Fuel--Air Cycles with Actual Spark Ignition Cycles 123

4.8 Limited Pressure Fuel--Air Cycle 125

4.9 Comparison of Limited Pressure Fuel--Air Cycles with Actual Compression Ignition Cycles 128

4.10 References 129

4.11 Homework 129

5. Intake and Exhaust Flow 131

5.1 Introduction 131

5.2 Valve Flow 131

5.3 Intake and Exhaust Flow 147

5.4 Superchargers and Turbochargers 150

5.5 Effect of Ambient Conditions on Engine and Compressor Mass Flow 158

5.6 References 159

5.7 Homework 160

6. Fuel and Airflow in the Cylinder 163

6.1 Introduction 163

6.2 Carburetion 163

6.3 Fuel Injection--Spark Ignition 166

6.4 Fuel Injection--Compression Ignition 168

6.5 Large-Scale in-Cylinder Flow 174

6.6 In-Cylinder Turbulence 180

6.7 Airflow in Two-Stroke Engines 185

6.8 References 193

6.9 Homework 195

7. Combustion Processes in Engines 197

7.1 Introduction 197

7.2 Combustion in Spark Ignition Engines 198

7.3 Abnormal Combustion (Knock) in Spark Ignition Engines 206

7.4 Combustion in Compression Ignition Engines 214

7.5 Low-Temperature Combustion 225

7.6 References 229

7.7 Homework 231

8. Emissions 234

8.1 Introduction 234

8.2 Nitrogen Oxides 235

8.3 Carbon Monoxide 243

8.4 Hydrocarbons 245

8.5 Particulates 249

8.6 Emissions Regulation and Control 251

8.7 References 258

8.8 Homework 259

9. Fuels 262

9.1 Introduction 262

9.2 Hydrocarbon Chemistry 263

9.3 Refining 266

9.4 Fuel Properties 267

9.5 Gasoline Fuels 269

9.6 Alternative Fuels for Spark Ignition Engines 274

9.7 Hydrogen 281

9.8 Diesel Fuels 282

9.9 References 286

9.10 Homework 287

10. Friction and Lubrication 288

10.1 Introduction 288

10.2 Friction Coefficient 288

10.3 Friction Mean Effective Pressure 291

10.4 Friction Measurements 291

10.5 Friction Modeling 294

10.6 Journal Bearing Friction 295

10.7 Piston and Ring Friction 298

10.8 Valve Train Friction 306

10.9 Accessory Friction 308

10.10 Pumping Mean Effective Pressure 310

10.11 Overall Engine Friction Mean Effective Pressure 311

10.12 Lubrication 312

10.13 References 315

10.14 Homework 316

11. Heat and Mass Transfer 318

11.1 Introduction 318

11.2 Engine Cooling Systems 319

11.3 Engine Energy Balance 320

11.4 Cylinder Heat Transfer 324

11.5 Heat Transfer Modeling 326

11.6 Heat Transfer Correlations 330

11.7 Heat Transfer in the Exhaust System 338

11.8 Radiation Heat Transfer 339

11.9 Mass Loss or Blowby 340

11.10 References 342

11.11 Homework 344

12. Engine Testing and Control 346

12.1 Introduction 346

12.2 Instrumentation 347

12.3 Combustion Analysis 354

12.4 Exhaust Gas Analysis 358

12.5 Control Systems in Engines 366

12.6 Vehicle Emissions Testing 369

12.7 References 370

12.8 Homework 370

13. Overall Engine Performance 372

13.1 Introduction 372

13.2 Effect of Engine and Piston Speed 372

13.3 Effect of Air--Fuel Ratio and Load 373

13.4 Engine Performance Maps 376

13.5 Effect of Engine Size 379

13.6 Effect of Ignition and Injection Timing 380

13.7 Effect of Compression Ratio 383

13.8 Vehicle Performance Simulation 383

13.9 References 384

13.10 Homework 385

Appendices 387

A Physical Properties of Air 387

B Thermodynamic Property Tables for Various Ideal Gases 389

C Curve-Fit Coefficients for Thermodynamic Properties of Various Fuels and Ideal Gases 397

D Conversion Factors and Physical Constants 401

E Thermodynamic Analysis of Mixtures 403

E.1 Thermodynamic Derivatives 403

E.2 Numerical Solution of Equilibrium Combustion Equations 405

E.3 Isentropic Compression/Expansion with Known Δ P 408

E.4 Isentropic Compression/Expansion with Known Δ v 409

E.5 Constant Volume Combustion 410

E.6 Quality of Exhaust Products 411

E.7 References 412

F Computer Programs 413

F.1 Volume.m 414

F.2 Velocity.m 414

F.3 BurnFraction.m 414

F.4 FiniteHeatRelease.m 415

F.5 FiniteHeatMassLoss.m 417

F.6 FourStrokeOtto.m 420

F.7 RunFarg.m 421

F.8 farg.m 422

F.9 fuel.m 425

F.10 RunEcp.m 426

F.11 ecp.m 427

F.12 AdiabaticFlameTemp.m 437

F.13 OttoFuel.m 438

F.14 FourStrokeFuelAir.m 440

F.15 Homogeneous.m 444

F.16 Friction.m 450

F.17 WoschniHeatTransfer.m 451

Index 455

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Internal Combustion Engines Applied Thermosciences

Internal Combustion Engines Applied Thermosciences

1118533313

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