Diesel Engine Technology covers the design, construction, operation, diagnosis, service, and repair of both mobile and stationary diesel engines. Content relates to on- and off-road vehicles, as well as marine, agricultural, and industrial applications. This new edition features a new chapter sequence, offering shorter, more focused chapters on essential content. New chapters cover Preventive Maintenance, Engine Brakes, Turbochargers, Cold Starting Aids, Hydraulic Electronic Unity Injection Systems, Common Rail Fuel Injection Systems, Electronics Troubleshooting, and Alternative Fuel Technologies. This text is a valuable resource for anyone involved in the service and repair of diesel engines, as well as those preparing for ASE Medium/Heavy Truck Test T2—Diesel Engines, Test T6—Electrical/Electronic Systems, and Test T8—Preventive Maintenance Inspection.

Table of Contents

Abbreviated Contents

Diesel Engine Technology 10e, Online Textbook

• Diesel Engine Technology
• Copyright © 2026 by The Goodheart-Willcox Company, Inc.
• Preface
• About the Authors
• Reviewers
• Acknowledgments
• New to This Edition
• Credentialing Partners and Support
• • ASE Education Foundation Connections
  • AED Connections
• Tools for Student and Instructor Success
• • Student Tools
  • Instructor Tools
• Features of the Textbook
• • Chapter Opening Materials
  • Additional Features
  • Illustrations
  • End-of-Chapter Content
• Brief Contents
• Contents
• Chapter 1 Introduction to Diesel Engines
• • Chapter 1 Learning Outcomes
  • Chapter 1 Key Terms
  • Chapter 1 Introduction
  • 1.1 The Diesel Engine
  • 1.2 Advantages of Diesel Engines Over Gasoline Engines
  • 1.3 Diesel Drawbacks
  • 1.4 Diesel Engine Applications
  • 1.5 Diesel Engine History
  • Chapter 1 Review and Assessment
• Chapter 2 Career Opportunities and Workplace Ethics
• • Chapter 2 Learning Outcomes
  • Chapter 2 Key Terms
  • Chapter 2 Introduction
  • 2.1 Careers in the Diesel Industry
  • 2.2 Industry Certifications
  • 2.3 Succeeding in the Workplace
  • 2.4 Applying for a Position
  • 2.5 Leaving a Job
  • Chapter 2 Review and Assessment
• Chapter 3 Shop Safety
• • Chapter 3 Learning Outcomes
  • Chapter 3 Key Terms
  • Chapter 3 Introduction
  • 3.1 Personal Safety
  • 3.2 Shop Safety Rules
  • 3.3 Fire Prevention
  • 3.4 Hazardous Materials
  • Chapter 3 Review and Assessment
• Chapter 4 Basic Hand Tools
• • Chapter 4 Learning Outcomes
  • Chapter 4 Key Terms
  • Chapter 4 Introduction
  • 4.1 Hand Tool Safety and Storage
  • 4.2 Standard and Metric Tools
  • 4.3 Hand Tools
  • 4.4 Specialized Diesel Tools and Equipment
  • 4.5 Electrical Test Equipment
  • Chapter 4 Review and Assessment
• Chapter 5 Air and Power Tools
• • Chapter 5 Learning Outcomes
  • Chapter 5 Key Terms
  • Chapter 5 Introduction
  • 5.1 Electric Power Tools
  • 5.2 Air Tools
  • 5.3 Hydraulic Tools
  • 5.4 Welding and Cutting Equipment
  • Chapter 5 Review and Assessment
• Chapter 6 Precision Measuring
• • Chapter 6 Learning Outcomes
  • Chapter 6 Key Terms
  • Chapter 6 Introduction
  • 6.1 Precision Measurements
  • 6.2 Distance Measuring Tools
  • 6.3 Gauges and Specialty Measuring Tools
  • Chapter 6 Review and Assessment
• Chapter 7 Fasteners and Sealing Methods
• • Chapter 7 Learning Outcomes
  • Chapter 7 Key Terms
  • Chapter 7 Introduction
  • 7.1 Threaded Fasteners
  • 7.2 Nonthreaded Fasteners
  • 7.3 Broken Fastener Removal
  • 7.4 Thread Repairs
  • 7.5 Sealants and Adhesives
  • Chapter 7 Review and Assessment
• Chapter 8 Principles of Engine Operation
• • Chapter 8 Learning Outcomes
  • Chapter 8 Key Terms
  • Chapter 8 Introduction
  • 8.1 Major Engine Components
  • 8.2 Diesel Engine Classifications
  • 8.3 Engine Performance Terms and Formulas
  • Chapter 8 Review and Assessment
• Chapter 9 Preventive Maintenance
• • Chapter 9 Learning Outcomes
  • Chapter 9 Key Terms
  • Chapter 9 Introduction
  • 9.1 Understanding Maintenance Schedules
  • 9.2 Walk-Around Inspection
  • 9.3 Oil Sampling
  • 9.4 Oil and Filter Service
  • 9.5 Fuel System Service
  • 9.6 Cooling System Service
  • 9.7 Servicing the Air Inlet System
  • 9.8 Electrical System Maintenance
  • 9.9 Emissions Component Maintenance
  • 9.10 Additional Engine Maintenance
  • 9.11 Winterizing Engines
  • 9.12 Diesel Engine Storage
  • Chapter 9 Review and Assessment
• Chapter 10 Engine Blocks
• • Chapter 10 Learning Outcomes
  • Chapter 10 Key Terms
  • Chapter 10 Introduction
  • 10.1 Cylinder Blocks
  • 10.2 Accessing Diesel Engine Components
  • 10.3 Engine Block Cleaning
  • 10.4 Cylinder Block Inspection
  • 10.5 Servicing Cylinder Liners
  • 10.6 Cylinder Reconditioning
  • Chapter 10 Review and Assessment
• Chapter 11 Crankshafts
• • Chapter 11 Learning Outcomes
  • Chapter 11 Key Terms
  • Chapter 11 Introduction
  • 11.1 Crankshaft Construction
  • 11.2 Crankshaft Inspection and Service
  • 11.3 Bearings
  • 11.4 Checking Bearing Clearance
  • 11.5 Installing Main Bearings
  • 11.6 Crankshaft Oil Seals
  • 11.7 Flywheel
  • 11.8 Vibration Dampers
  • Chapter 11 Review and Assessment
• Chapter 12 Pistons, Rings, and Connecting Rods
• • Chapter 12 Learning Outcomes
  • Chapter 12 Key Terms
  • Chapter 12 Introduction
  • 12.1 Diesel Pistons
  • 12.2 Piston Rings
  • 12.3 Piston Pins (Wrist Pins)
  • 12.4 Connecting Rods
  • Chapter 12 Review and Assessment
• Chapter 13 Cylinder Heads and Related Components
• • Chapter 13 Learning Outcomes
  • Chapter 13 Key Terms
  • Chapter 13 Introduction
  • 13.1 Cylinder Head
  • 13.2 Valves
  • Chapter 13 Review and Assessment
• Chapter 14 Camshaft and Valve Train Components
• • Chapter 14 Learning Outcomes
  • Chapter 14 Key Terms
  • Chapter 14 Introduction
  • 14.1 Valve Train
  • 14.2 Disassembling, Inspecting, and Servicing the Valve Train
  • 14.3 Assembling the Valve Train Components
  • Chapter 14 Review and Assessment
• Chapter 15 Engine Brakes
• • Chapter 15 Learning Outcomes
  • Chapter 15 Key Terms
  • Chapter 15 Introduction
  • 15.1 Engine Brakes
  • 15.2 Exhaust Brakes
  • 15.3 Compression Release
  • 15.4 Other Brake Retarders
  • 15.5 Engine Brake Adjustment
  • 15.6 Engine Brake Troubleshooting
  • Chapter 15 Review and Assessment
• Chapter 16 Lubrication Systems
• • Chapter 16 Learning Outcomes
  • Chapter 16 Key Terms
  • Chapter 16 Introduction
  • 16.1 Lubrication Systems
  • 16.2 Lubrication System Components
  • 16.3 Oil Pressure Indication Systems
  • 16.4 Crankcase Ventilation Systems
  • Chapter 16 Review and Assessment
• Chapter 17 Cooling Systems
• • Chapter 17 Learning Outcomes
  • Chapter 17 Key Terms
  • Chapter 17 Introduction
  • 17.1 Cooling Systems
  • 17.2 Water Manifolds
  • 17.3 Water Pumps
  • 17.4 Belt Drives and Fans
  • 17.5 Cooling System Service
  • Chapter 17 Review and Assessment
• Chapter 18 Air Intake Systems
• • Chapter 18 Learning Outcomes
  • Chapter 18 Key Terms
  • Chapter 18 Introduction
  • 18.1 Air Intakes
  • 18.2 Scavenging and Supercharging
  • 18.3 Air Cleaners
  • 18.4 Intake Air Silencers
  • 18.5 Blowers
  • 18.6 Intake Air Passages
  • Chapter 18 Review and Assessment
• Chapter 19 Turbochargers
• • Chapter 19 Learning Outcomes
  • Chapter 19 Key Terms
  • Chapter 19 Introduction
  • 19.1 Turbochargers
  • 19.2 Turbocharger Components
  • 19.3 Types of Turbochargers
  • 19.4 Turbocharger Inspection, Troubleshooting, and Service
  • Chapter 19 Review and Assessment
• Chapter 20 Emission Regulations and Controls
• • Chapter 20 Learning Outcomes
  • Chapter 20 Key Terms
  • Chapter 20 Introduction
  • 20.1 Standards for Emissions
  • 20.2 Exhaust Gas Recirculation
  • 20.3 Diesel Oxidation Catalysts
  • 20.4 Diesel Particulate Filter
  • 20.5 Selective Catalytic Reduction
  • Chapter 20 Review and Assessment
• Chapter 21 Exhaust Systems and Aftertreatment
• • Chapter 21 Learning Outcomes
  • Chapter 21 Key Terms
  • Chapter 21 Introduction
  • 21.1 Exhaust System
  • 21.2 Exhaust System Components
  • 21.3 Exhaust Piping
  • 21.4 Exhaust System Service
  • 21.5 Exhaust Pyrometers
  • Chapter 21 Review and Assessment
• Chapter 22 Basics of Electricity
• • Chapter 22 Learning Outcomes
  • Chapter 22 Key Terms
  • Chapter 22 Introduction
  • 22.1 Principles of Electricity
  • 22.2 Electrical Circuits
  • 22.3 Basic Circuit Conditions
  • 22.4 Electrical System Components
  • 22.5 Semiconductor Devices
  • Chapter 22 Review and Assessment
• Chapter 23 Batteries
• • Chapter 23 Learning Outcomes
  • Chapter 23 Key Terms
  • Chapter 23 Introduction
  • 23.1 Batteries
  • 23.2 Battery Safety
  • 23.3 Battery Ratings
  • 23.4 Battery Preventive Maintenance
  • 23.5 Battery Testing
  • 23.6 Battery Charging
  • 23.7 Jump-Starting Diesel Engines
  • Chapter 23 Review and Assessment
• Chapter 24 Diesel Engine Charging Systems
• • Chapter 24 Learning Outcomes
  • Chapter 24 Key Terms
  • Chapter 24 Introduction
  • 24.1 Charging System
  • 24.2 Alternators
  • 24.3 Voltage Regulators
  • 24.4 Service Precautions
  • 24.5 Charging System Problems
  • 24.6 Alternator Removal and Installation
  • 24.7 Drive Belt Service
  • Chapter 24 Review and Assessment
• Chapter 25 Diesel Starting Systems
• • Chapter 25 Learning Outcomes
  • Chapter 25 Key Terms
  • Chapter 25 Introduction
  • 25.1 Starting System
  • 25.2 Electric Starting System
  • 25.3 Troubleshooting Electric Starting Systems
  • 25.4 Air Starting System
  • 25.5 Troubleshooting Air Starting Systems
  • Chapter 25 Review and Assessment
• Chapter 26 Cold Starting Aids
• • Chapter 26 Learning Outcomes
  • Chapter 26 Key Terms
  • Chapter 26 Introduction
  • 26.1 Starting a Cold Diesel Engine
  • 26.2 Cold Starting Aids
  • 26.3 Auxiliary Power Unit
  • Chapter 26 Review and Assessment
• Chapter 27 Diesel Fuels and Filters
• • Chapter 27 Learning Outcomes
  • Chapter 27 Key Terms
  • Chapter 27 Introduction
  • 27.1 Hydrocarbon Fuels
  • 27.2 Diesel Fuel Grades
  • 27.3 Diesel Fuel Properties and Characteristics
  • 27.4 Fuel Additives
  • 27.5 Fuel Handling and Storage
  • 27.6 Diesel Fuel Filters
  • 27.7 Filtration Systems
  • 27.8 Servicing Fuel Filters
  • 27.9 Fuel Heaters and Coolers
  • Chapter 27 Review and Assessment
• Chapter 28 Fuel Delivery Systems
• • Chapter 28 Learning Outcomes
  • Chapter 28 Key Terms
  • Chapter 28 Introduction
  • 28.1 Fuel Delivery System Components and Operating Fundamentals
  • 28.2 Fuel Delivery System Types
  • 28.3 Fuel Tanks
  • 28.4 Fuel Gauge Systems
  • 28.5 Fuel Lines
  • 28.6 Fuel Transfer Pumps (Supply Pumps)
  • Chapter 28 Review and Assessment
• Chapter 29 Fuel Injection Fundamentals
• • Chapter 29 Learning Outcomes
  • Chapter 29 Key Terms
  • Chapter 29 Introduction
  • 29.1 Types of Fuel Injection Systems
  • 29.2 Diesel Fuel Injection System Tasks
  • 29.3 Governing Engine Speed
  • Chapter 29 Review and Assessment
• Chapter 30 Injection Nozzles
• • Chapter 30 Learning Outcomes
  • Chapter 30 Key Terms
  • Chapter 30 Introduction
  • 30.1 Nozzles and Nozzle Holders
  • 30.2 Types of Injector Nozzles
  • 30.3 Servicing Fuel Injector Holders and Nozzles
  • Chapter 30 Review and Assessment
• Chapter 31 Diesel Injection Pumps
• • Chapter 31 Learning Outcomes
  • Chapter 31 Key Terms
  • Chapter 31 Introduction
  • 31.1 Injection Pumps
  • 31.2 Inline Pump Testing and Service
  • 31.3 Distributor Pump Calibration
  • 31.4 Basic Troubleshooting
  • 31.5 Acceleration Smoke Controls
  • Chapter 31 Review and Assessment
• Chapter 32 Unit Fuel Injection Systems
• • Chapter 32 Learning Outcomes
  • Chapter 32 Key Terms
  • Chapter 32 Introduction
  • 32.1 Basics of Unit Injection
  • 32.2 Mechanical Unit Injectors (MUI)
  • 32.3 Electronic Unit Injectors (EUI)
  • 32.4 Hydraulic Electronic Unit Injectors (HEUI)
  • 32.5 Unit Injector Troubleshooting and Service
  • Chapter 32 Review and Assessment
• Chapter 33 Electronic Engine Controls and Common Rail Fuel Injection
• • Chapter 33 Learning Outcomes
  • Chapter 33 Key Terms
  • Chapter 33 Introduction
  • 33.1 Diesel Engine Control Systems
  • 33.2 High-Pressure Common Rail Electronic Fuel Injection Systems
  • 33.3 Engine Diagnostic System Operation
  • 33.4 Electronic Engine Control System Overviews
  • 33.5 Troubleshooting Electronic Engine Controls
  • Chapter 33 Review and Assessment
• Chapter 34 Diesel Engine Troubleshooting
• • Chapter 34 Learning Outcomes
  • Chapter 34 Key Terms
  • Chapter 34 Introduction
  • 34.1 Troubleshooting
  • 34.2 Primary Engine Checks
  • 34.3 General Test Procedures
  • Chapter 34 Review and Assessment
• Chapter 35 Advanced Electrical Troubleshooting
• • Chapter 35 Learning Outcomes
  • Chapter 35 Key Terms
  • Chapter 35 Introduction
  • 35.1 Accurate Electrical Diagnosis
  • 35.2 Common Electrical Issues
  • 35.3 Safety Precautions and Best Practices
  • 35.4 Advanced Troubleshooting Techniques
  • 35.5 Systematic Approach to Diagnosis
  • 35.6 Trends in Electrical Diagnosis
  • Chapter 35 Review and Assessment
• Chapter 36 Engine Reassembly and Installation
• • Chapter 36 Learning Outcomes
  • Chapter 36 Key Terms
  • Chapter 36 Introduction
  • 36.1 Establish Good Work Habits
  • 36.2 Cylinder Block, Sleeves, and Crankshaft Assembly
  • 36.3 Cylinder Head Reassembly and Installation
  • 36.4 Rebuilt Engine Run-In Procedures
  • Chapter 36 Review and Assessment
• Chapter 37 Alternative Fuels
• • Chapter 37 Learning Outcomes
  • Chapter 37 Key Terms
  • Chapter 37 Introduction
  • 37.1 Alternative Fuels in Commercial Trucking
  • 37.2 Challenges in Alternative Fuel Adoption
  • 37.3 Types of Alternative Fuels
  • 37.4 Emerging Technologies
  • Chapter 37 Review and Assessment
• Appendix A
• • Troubleshooting Engine and Fuel System Problems
• Appendix B
• • Useful Tables
• Glossary
• Index