Contents Introduction 1. An Overview of the Development of Electric Locomotives in China 2 2. A Summary of the HXD Series of AC Transmission Electric Locomotives 3 3. The HXD1D Electric Locomotive 4 4. The HXD3 Electric Locomotive 6 Chapter 1 Electric Locomotive Body 1.1 Locomotive Body Equipment Arrangement 10 1.2 Ventilation and Cooling System 34 1.3 Air Pipeline System 45 1.4 Coupler-buffer Unit 57 Exercises 69 Chapter 2 Electric Locomotive Bogie 2.1 An Overview of the Bogie 72 2.2 Bogie Frame and Auxiliary Devices 76 2.3 Elastic Suspension Device 84 2.4 Wheelset Drive Device 96 2.5 Traction and Brake Devices 117 Exercises 134 Chapter 3 Assembly and Commissioning of the Electric Locomotive 3.1 Main Technical Parameters 138 3.2 Final Assembly and Commissioning 145 Exercises 150 Chapter 4 Electric Locomotive Maintenance During Operation 4.1 Works of Service Preparation 154 4.2 Inspection During Preparation 157 4.3 Case Analysis of Locomotive Failures 164 Exercises 173 References 175