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Introduction to Cooling Airflow Systems Web Seminar RePlay PD331240ON

Vehicle functional requirements, diesel emission regulations, and subsystem thermal limits all have a direct impact on the design of a powertrain cooling airflow system. Severe duty cycles, minimal ram air, fouling, and sometimes unconventional package layouts present unique challenges to the designer. This course introduces many airflow integration issues and vehicle-level trade-offs that effect system performance and drive the design.

The goal of this course is to introduce engineers and managers to the basic principles of diesel cooling airflow systems for commercial and off-road vehicles. Participants will learn about vehicle/product constraints, integration issues, cooling airflow, system resistance, fans, shrouds, radiators, coolers, estimating heat rejection, thermal recirculation, and overall system performance. Basic concepts will be reinforced with examples and a cooling performance calculation of a diesel cooling system.

Objectives

By participating in this course, you will be able to:

  • Define vehicle requirements and many cooling airflow system integration issues
  • Describe heat exchanger sizing considerations, design alternatives, and thermal effectiveness
  • List fan/shroud aerodynamic design parameters, guidelines, and installation effects
  • Apply the fan laws to evaluate alternative designs
  • Calculate fan operating point and airflow using component pressure-loss coefficients
  • Estimate engine heat rejection to coolant, including Exhaust Gas Recirculation (EGR)
  • Calculate steady-state thermal performance of a diesel cooling airflow system

Materials Provided

  • 90 days of online single-user access (from date of purchase) to the six session,
    approximately twelve hour, recorded presentation
  • Course workbook (downloadable, .pdf's) including the following SAE Papers:

    • 2002-01-0256, Cooling Inlet Aerodynamic Performance and System Resistance
    • 850281, An Automotive Front-End Design Approach for Improved Aerodynamics and Cooling
    • 900001, Heavy Truck Cooling Systems and
    • 740691, Designing the Engine Cooling Fan

  • Online learning assessment
  • Instructor follow up to your content questions
  • 1.2 CEUs* (upon completion of all course modules and satisfactory assessment score)

*SAE International is authorized by IACET to offer CEUs for this course.

Is this Web Seminar RePlay for You?

OEM and supplier engineers and managers who are involved with vehicle cooling systems, or who interface with vehicle program management on these issues, will benefit from this web seminar. Graduate-level students interested in cooling systems will also find it instructive.

For More Details

Email CustomerService@sae.org, or call 1-877-606-7323 (U.S. and Canada) or 724-776-4970 (outside US and Canada).

Related Topics
Session 1: Vehicle Perspective
  • Overview Typical Cooling Airflow Systems
  • Design Drivers
  • A Classification of Vehicle Cooling Systems
  • Industrial Air-cooled Heat Exchanger Assemblies
  • Impact of System & Sub-system Requirements
  • Thermal Recirculation
  • Design Challenges
Session 2: Key Concepts – System Heat Transfer Equation and Pressure Losses
  • 1st Law of Aerodynamics
  • Radiator Heat Transfer Equation
  • Definition of Standard Air
  • Airflow Terminology and Standard Cubic Feet per Minute (SCFM)
  • Bernoulli’s Equation and Ram Pressure
  • Pressure Loss Coefficient
  • Vehicle Air Flow Restrictions – Flow Energy Losses
  • Construct a System Pressure Loss Curve
Session 3: Fan Airflow
  • Fan Classification and Specific Speed
  • Fan Characteristic Curve and System Matching
  • Air Performance Test Chambers (AMCA)
  • Axial Fan Systems, Pusher and Puller
  • Exercise the Fan Laws to Evaluate Design Alternatives
  • Shroud Design Considerations
  • Vehicle Installation Effects – Fan Position, Tip Clearance, Radiator Proximity
Session 4: Fan and Ram Airflow Map
  • Ram Airflow
  • Flow Energy Balance Equation
  • Fan Operation with Ram
  • Ram Total-Pressure Recovery
  • Calculate System Loss Curve, Fan Operating Point and Cooling Airflow
Session 5: Compact Heat Exchangers
  • Thermal Classification of Heat Exchangers
  • Compact Heat Exchangers in Vehicle Applications
  • Radiator Effectiveness and Louvered Fins
  • Charge Air Coolers, Performance Calculation Against Requirements
  • Air-Side Fouling Study and Heat Exchanger Design Considerations
  • Thermal Accumulation Calculation
Session 6: Estimating Powertrain Heat Rejection
  • SAE Dynamometer Gross Power Test Procedures
  • Dynamometer Data on Engine Heat Rejection
  • Brake Mean Effective Pressure (BMEP), A Power Density
  • Specific Heat Rejection (SHR) Characteristic Curve
  • EGR Heat Rejection to Coolant
  • Evaluation of Diesel Cooling System
  • Tools and Methods for System Development

  • Windows 7, 8, 10 (other operating systems and mobile platforms are not supported but may work)
  • Internet Explorer 11, Mozilla Firefox 37+ , Google Chrome 42+ (other browsers are not supported)
  • Broadband-1Mbps minimum

Joe J. Doe
Jack Williams

Mr. Williams is the principal at Airflow & Aerodynamics Engineering, LLC and an independent consultant specializing in the design and development of thermal management systems and vehicle aerodynamics. He is an adjunct faculty member at the Lawrence Technological University (LTU) and a guest lecturer for their MSAE Program on Automotive Mechanical Systems. In addition to his consulting work, he conducts professional development seminars for engineers on cooling systems, HEV battery thermal management, and road vehicle aerodynamics. Mr. Williams has over thirty years engineering management experience in product development at Ford Motor Co. Additionally, he was an aerodynamics project leader with the USAF Aeronautical Systems Division at Wright-Patterson Air Force Base, Ohio where he specialized in engine/aircraft integration, gas turbine engine performance, inlet design, and aircraft mission analysis. An active member of the SAE, Mr. Williams has authored over twenty technical papers, given invited lectures at major mid-west universities, and has received professional awards and international recognition for his innovative work. He is a recipient of the Henry Ford II Technology Award, the SAE Industrial Lectureship Award, the SAE Oral Presentation Award, and the SAE Forest R. McFarland Award. He holds a B.S. in Aeronautical Engineering from the University of Detroit and an M.S. in Aerospace/Mechanical Engineering from the United States Air Force Institute of Technology.

1.2 CEUs

Testimonial

“It's a good course that covers the basic of cooling airflow design, together with some more advanced insights into the area...”
Peter Gullberg.
Technology Specialist
Volvo Trucks Technology

Access Period:90 Days

Duration: 12 Hours
Members save up to 20% off list price.
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Special Offers: To cost effectively train multiple team members, contact Corporate Learning Solutions for discount pricing. Email corplearn@sae.org, call 724-772-8529, or complete a Corporate Learning Solutions Request Form.

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