CHASSIS AND VEHICLE DYNAMICS
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 vehicle brake and suspension systems is required. Topical Outline DAY ONE • Tire-Road Interface Characteristics −− Defining slip −− Longitudinal mu-slip relationship −− Lateral mu-slip relationship −− The friction circle • Hydraulic Brake System Overview −− What do braking systems do? −− How does each component contribute? −− What are the underlying fundamental relationships? −− How does this apply to brake control systems? • Stability, Steerability, Stopping Distance −− Stability −− Steerability −− Stopping Distance −− Illustrate with friction circle • Mechanization of ABS
The seminar begins by defining the tire-road interface and analyzing fundamental vehicle dynamics. Following an in-depth study of system electronics, hydraulic hardware, and sensor requirements, the participants learn about the control strategies employed by anti-lock brakes (ABS), dynamic rear proportioning (DRP), traction control (TCS), and electronic stability control (ESC) with a heavy emphasis placed on the resulting vehicle dynamics. The seminar concludes with a study of unique applications, a look forward to advanced brake control system integration, and an overview of Federal Motor Vehicle Safety Standard 126. Over 500 pages of detailed course notes and illustrations are provided for on-the-job reference. This course has been approved by the Accreditation Commission for Traffic Accident Reconstruction (ACTAR) for 13 Continuing Education Units (CEUs). Upon completion of this seminar, accredited reconstructionists should mail a copy of their course certificate and the $5 student CEU fee to ACTAR, PO Box 1493, North Platte, NE 69103. Learning Objectives By attending this seminar, you will be able to: • Analyze brake system design parameters and their vehicle performance effects • Evaluate the compromises between stability, steerability, and stopping distance • Identify the discrete mechanical components required for ABS • Specify fundamental ABS performance attributes • Calculate dynamic brake balance and explain the benefits of DRP • Reconcile TCS performance expectations vs. method of implementation • Define ESC perfornance metrics and physical limitations • Assess features such as adaptive cruise control and brake assist • Interpret federal requirements for the performance of ESC Who Should Attend This course has been developed for engineers involved in all fields related to the design or development of vehicle dynamics, vehicle braking systems, powertrain systems, chassis systems, or suspension systems. In addition, this course can be valuable to those with component design responsibilities in brake, chassis, suspension, or tire disciplines. Individuals new to the field of brake control systems will benefit most from the material; this introductory course is not intended for individuals with significant experience with brake control systems. In addition, please note that because of proprietary considerations this class does not provide details of algorithm design, algorithm performance, or algorithm application. Instead, the course places strong emphasis on vehicle dynamic responses. This classroom seminar is equivalent to the On Demand Course, Introduction to Brake Control Systems: ABS, TCS, and ESC (ID# PD730501)
−− ECU functions and components −− HCU functions and components −− ABS hold, release, and apply functions −− Diagnostics and warning lamp considerations • ABS Sensor Overview −− The role of sensors −− Wheel speed sensors −− Brake apply state sensors −− Longitudinal accelerometers • ABS Performance
−− ABS objectives and strategies −− Basics of ABS wheel control
−− ABS performance on homogeneous surfaces −− ABS performance under other conditions
DAY TWO • DRP Performance
−− Weight transfer and brake proportioning −− Looking back: the proportioning valve
−− DRP strategies, wheel control, and performance −− DRP benefits, design compromises, and limitations • Mechanization of TCS and ESC −− Additional ECU functions and components −− Additional HCU functions and components −− Pressure build sequence • TCS Performance
−− TCS objectives and strategies −− Basics of TCS wheel control −− TCS performance under various conditions −− Driveline architecture interactions
13
3 ways to get a no-obligation price quote to deliver a course to your company: Call SAE Corporate Learning at +1.724.772.8529 | Fill out the online quote request at sae.org/corplearning | Email us at corplearn@sae.org
Made with FlippingBook Online newsletter