Emissions-Related OBD Systems:  A Design Overview
I.D. # C0708 Duration 1 Day

On-board diagnostics, required by governmental regulations, provide a means for reducing harmful pollutants into the environment. Since being mandated in 1996, the regulations have continued to evolve and require engineers to design systems that meet strict guidelines. This one day seminar is designed to provide an overview of the fundamental design objectives and the features needed to achieve those objectives for generic on-board diagnostics. The basic structure of an on-board diagnostic will be described along with the system definitions needed for successful implementation.

Please note that because of proprietary considerations, this class does not provide details of algorithm design, algorithm performance, or algorithm application. The class will cover general OBD algorithm designs and the features required to promote sound OBD system design.

Individuals desiring a more in-depth look at On-Board Diagnostics should consider attending SAE seminar ID# C0707 Designing On-Board Diagnostics for Light and Medium Duty Emissions Control Systems.
Learning Objectives
By attending this seminar, you will be able to:
  • Articulate the underlying design objectives of on-board diagnostic systems
  • Apply the design features that all diagnostics need for successful implementation
  • Apply basic design techniques to deal with variation
  • Use a diagnostic design template in the development of an on-board diagnostic
Who Should Attend
This course is designed for engineers involved in either the design or control of on-board diagnostic systems for engines or transmissions for light and medium duty on-road vehicles. Individuals working in the heavy duty industry may also find the information interesting, but should note that the examples will be geared towards spark ignition engines and light and medium duty regulations. In addition, engineers involved in engine and transmission hardware will benefit by obtaining a better understanding of the design of OBD systems. Engineers new to the area of OBD system design and engineers involved in the design of control systems wishing to obtain a better understanding of OBD requirements will also find the course valuable.
Prerequisites
An undergraduate engineering degree or a strong technical background is highly recommended. A basic knowledge of college algebra, college physics, and a familiarity with modern engine or transmission systems is required
Seminar Content
  • Fundamental Design Objectives for OBD Systems
  • Basic Design Features for OBD Systems
  • Defining "Good" vs. "Bad" Systems
  • Exercise: Defining Good vs. Defective Systems
  • Anatomy of an On-Board Diagnostic
  • Diagnostic Modeling
  • Understanding and Dealing with Variation
    • Decision making processes
    • Design guidelines for Exponentially Weighted Moving Averages (EWMA)
Instructor(s): John Van Gilder
John Van Gilder is currently a Technical Fellow, OBD II Development, in the General Motors Powertrain Group where he is responsible for implementing statistical techniques in OBD design, model based on-board diagnostic design, development of OBD requirements for new powertrain systems, and in-use assessment of OBD systems. Prior to that, Mr. Van Gilder was a Product Assurance Engineer at Delphi where he focused on improving design and manufacturing process reliability, including implementation of quality tools such as design of experiments, quality function deployment, statistical process control, etc. for spark plugs and exhaust oxygen sensors. Mr. Van Gilder was also a Commissioned Officer in the United States Navy working in materials research and development. He has organized and presented at numerous SAE OBD and Powertrain Controls technical meetings. Mr. Van Gilder has a B.S.E. in Engineering Physics from the University of Michigan, a M.S. E. in Nuclear Engineering from the Bettis Atomic Power Laboratory and a M.S.E. in Reliability Engineering from Kettering University and is a Professional Engineer in the state of Michigan.
Fees: $805 SAE Members*: $645 - $725
* The appropriate SAE Member discount will be applied through the Registration process.  Discounts vary according to level of membership: Elite Member 20%; Premium Member 15%; Classic Member 10%
CEU .7