Browse Learn C1214

Exhaust Gas Recirculation (EGR) for Diesel Engines C1214

Meeting the requirements of heavy-duty engine emissions regulations is a challenge for all engine manufacturers. Since the introduction of Exhaust Gas Recirculation (EGR) in medium and heavy-duty diesel engines, these systems have become more sophisticated and tightly integrated with emission control systems.

This 2-day seminar will explore the advantages and disadvantages of EGR and the most effective implementation of various EGR systems. This seminar will begin by defining EGR and why it is used in diesel engines, along with an explanation of the mechanisms by which EGR is able to reduce NOx. This seminar will then move into implementation of EGR systems and examples of these systems on medium and heavy-duty diesel engines. In addition, the impact of EGR on various engine components will be discussed and will include EGR coolers, valves and piping. Finally, a section will be devoted to the comparison between EGR and SCR and their future roles in reducing NOx emissions, as well as their impact on fuel efficiency and CO2 emissions. Emphasized in this comparison is the use of EGR in novel combustion systems and its ability to reduce emissions in-cylinder.

Learning Objectives
By attending this seminar you will be able to:
  • Define EGR
  • Recognize the different types of EGR systems used in diesel engines
  • Evaluate the overall advantages and disadvantages of EGR systems in diesel engines
  • Identify the impact of EGR on the combustion process
  • Identify the impact of EGR on NOx and PM emissions
  • Compare and evaluate EGR and SCR systems as a means to meeting emissions regulations

Who Should Attend
This seminar is designed for engineers and managers working in diesel combustion and emissions control technologies.

A basic understanding of diesel engine technologies and emissions formation will be beneficial.


  • Fundamentals of Exhaust Gas Recirculation
    • Defining EGR
    • Purpose of EGR
    • How EGR works
    • Why EGR is used in diesel engines
  • Types of EGR Systems and Implementation
    • HPL EGR
    • LPL EGR
    • Combination HPL and LPL
    • Venturi-Assisted EGR
    • Dedicated EGR
  • Advantages and Disadvantages
    • EGR in general
    • HPL EGR
    • LPL EGR
  • Impact of EGR
    • On emissions
    • On fuel economy
    • On engine wear
  • Opportunities for Unique EGR System Implementations
    • Air-Augmented EGR systems
    • EGR filtration systems
  • EGR System Design
    • Calculations
    • Modeling and Simulation
  • Controls
    • System delay and control
    • Model-Based control system
    • Optimizing for BSFC
    • Optimizing for smoke
    • Optimizing for NEDC
    • Strategy for hybrid EGR
    • Throttle control valve
  • Impact of Turbocharging on EGR Performance
  • EGR Coolers and Mixers
    • Installation
    • Design
    • Effects of EGR
  • Examples of Production EGR Systems
    • Cummins
    • Volvo
    • Mack
    • Detroit Diesel
    • Navistar
  • Issues and Challenges of EGR Implementation
    • Primary issues
    • Power density
    • Component design
    • Performance and combustion
    • Components
  • Effect of EGR on Diesel Combustion
    • Emissions
    • Fuel consumption
    • Torque and power
    • Temperature
  • EGR and Selective Catalytic Reduction (SCR) Systems Comparison
    • General comparisons
    • Future roles in reducing emissions
Magdi Khair

Dr. Khair is a consultant at Magdiesel Technologies. He has recently retired from Watlow Electric where he was Chief Technologist in Watlow's Diesel Emission Space. He was previously an Institute Engineer at Southwest Research Institute. He had prior assignments at Allied Signal Automotive Catalyst, Ford New Holland, Ford Tractor Operations, Bendix Diesel Operations, and the Chrysler Corporation. He has worked with diesel engines and their emission control systems. Dr. Khair has an extensive background in diesel aftertreatment, stratified charge, and gas turbine engines since 1970. He was involved with developing emission control systems to help diesel and alternative combustion engines meet future regulated limits. He has co-authored Diesel Emissions and Their Control, a comprehensive textbook, and continues to present seminars in diesel engine technology, selective catalytic reduction for diesel engines, and exhaust gas recirculation.

Dr. Khair holds a B.S. in Automotive Engineering from Cairo, Egypt, a M.S. in Thermodynamics from the University of Birmingham, England, a MBA from Michigan State University USA, and a Ph.D. in Engineering Management from Warren National University. Dr. Khair holds 20 US patents in the areas of fuel injection, turbocharging, exhaust gas recirculation and filtration, and diesel aftertreatment systems.

Hotel & Travel Information

Fees: $1370.00
SAE Members: $1096.00 - $1233.00

1.3 CEUs
You must complete all course contact hours and successfully pass the learning assessment to obtain CEUs.

“Any questions or confusion I had about EGR were finally cleared up. Excellent class and instructor!”
Alan M. Dyrussel
Diesel Technician
Cascade Engineering


“Great course. Good material. Excellent presentation.”
Andrei Rodulescu
Valvetrain Technical Specialist


“Clear and concise information, well presented”
Alan Thomson
Service Tech
Inland Truck Parts and Service


"Course and instruction: 60% New 40% Review = 100% Excellent"
David Chekas
Senior Engineer
John Deere Power Systems


"Extremely informative, Dr. Khair is a tremendous resource.”
Chuck Cant
Sales Manager
TE Connectivity



To register, click the Register button above or contact SAE Customer Service 1-877-606-7323 (724-776-4970 outside the U.S. and Canada) or at

Duration: 2 Days
September 11-12, 2018 (8:30 a.m. - 4:30 p.m.) - Troy, Michigan
October 18-19, 2018 (8:30 a.m. - 4:30 p.m.) - Gothenburg, Sweden   Delivered in   English