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Vehicle noise, vibration, and emissions are only a few of the factors that can have a detrimental effects on overall performance of an engine. These aspects are benchmarks for choice of customers while choosing a vehicle or for engineers while choosing an engine for industrial applications. It is important that mechanical and automotive engineers have some knowledge in this area, as a part of their well-rounded training for designing and selecting various types of engines. This volume is a valuable introductory text and a handy reference for any engineer, manager, or technician working in this area. The automotive industry, and other industries that make use of engines in their industrial applications, account for billions, or even trillions, of dollars of revenue worldwide and are important in the daily lives of many, if not most, of the people living on this planet. This is an area that affects a staggering number of people, and the information needed by engineers and technicians concerning the performance of various types of engines is of paramount importance in designing and selecting engines and the processes into which they are introduced.
List of contents
Preface ix
Introduction xi
1 Introduction to Combustion Engines 1
1.1 Historical Background 1
1.2 Classifications 6
1.3 Engine Components 11
References 23
2 Gasoline Engine Technology 27
2.1 Introduction 27
2.2 Background 29
2.3 Charge Delivery Systems 32
2.4 Carburetor 33
2.5 Fuel Injection Systems 38
2.6 Injection Systems 40
2.7 Sensors 43
References 46
3 Diesel Engine Technology 49
3.1 Introduction 49
3.2 Injection Systems 57
References 65
4 Turbocharging 69
4.1 Introduction 69
4.2 Background 70
4.3 Conclusions 75
References 76
5 Combustion Based Noise 77
5.1 Introduction 77
5.2 Background 78
5.3 Conclusions 80
References 83
6 Superchargers 87
6.1 Introduction 87
6.2 Roots Supercharger 90
6.3 Centrifugal Supercharger 91
6.4 Screw Supercharger 92
References 94
7 Materials for Engine 95
7.1 Introduction 95
7.2 Structural Properties 96
7.3 Non-Structural Properties 97
7.4 Cast Iron 100
7.5 Aluminum 101
References 101
8 Vehicle Noise and Vibration 103
8.1 Introduction 103
8.2 Vehicle Systems 104
8.3 Transfer Paths 105
8.4 Features of NVH 106
8.5 Importance of Vehicle NVH 113
References 115
9 Power Train NVH 121
9.1 Introduction 121
9.2 Engine Vibrations 122
9.3 Combustion Noise 130
9.4 Spectrum Characteristics of Cylinder Pressure 134
9.5 Relationship between the Spectrum of Cylinder Pressure and Noise 138
9.6 Motion Based Noise 150
9.7 Piston Slap 152
9.8 Bearing Noise 168
9.9 Oil Pump Noise 172
Contents vii
9.10 Timing Chain and Belt Noise 176
9.11 Transmission Whine 180
9.12 Rattle 185
9.13 Clutch Noise 189
9.14 Flow Noise 196
9.15 Muffler 200
References 203
10 Body and Chassis System 211
10.1 Introduction 211
10.2 Vehicle Interior NVH 215
10.3 NVH Damping 226
References 237
11 Vehicle Testing 243
11.1 Introduction 243
11.2 Decomposition of Various Sources 244
11.3 Interior Noise 246
11.4 Psychoacoustic Analysis 247
11.5 Conclusions 251
References 251
Index 255
About the author
Aman Gupta holds a masters degree from Punjab Technical University, and he has written or co-written several books and papers.?His areas of research include heat transfer, thermal engineering, and solid mechanics.
Shubham Sharma holds a masters degree from Punjab Technical University.?His area of research is in mechanical engineering, and he is a consultant in the field of combustion engines.
Sunny Narayan holds a masters degree from the University of Bristol in the United Kingdom and has several books and papers to his credit. He is a member of SAE, ASME and INCE and is a freelance tutor. His area of research includes combustion engines, focusing on noise and vibration aspects of engines.
Summary
Vehicle noise, vibration, and emissions are only a few of the factors that can have a detrimental effects on overall performance of an engine. These aspects are benchmarks for choice of customers while choosing a vehicle or for engineers while choosing an engine for industrial applications. It is important that mechanical and automotive engineers have some knowledge in this area, as a part of their well-rounded training for designing and selecting various types of engines. This volume is a valuable introductory text and a handy reference for any engineer, manager, or technician working in this area. The automotive industry, and other industries that make use of engines in their industrial applications, account for billions, or even trillions, of dollars of revenue worldwide and are important in the daily lives of many, if not most, of the people living on this planet. This is an area that affects a staggering number of people, and the information needed by engineers and technicians concerning the performance of various types of engines is of paramount importance in designing and selecting engines and the processes into which they are introduced.
