Automotive Heat Transfer
I.D. # C1230 Duration 2 Days
Heat transfer affects the performance, emissions and durability of the engine as well as the design, packaging, material choice and fatigue life of vehicle components. This course covers the broad range of heat transfer considerations that arise during the design and development of the engine and the vehicle with a primary focus on computational models and experimental validation covering the flow of heat from its origin in the engine cylinders and its transfer via multiple paths through engine components. Specifically, the course will cover heat transfer design considerations related to the following: engine cooling and lubrication systems as well as bay-to-bay breathing; exhaust system and after-treatment components; tail pipe gas temperatures, as well as thermal interactions between the engine and its exhaust system with the components in the vehicle under-hood and under-body; turbochargers; passenger cabin HVAC system, including windshield de-icing; battery cooling; heat exchangers and challenges associated with predicting thermal mechanical fatigue life of components.
Learning Objectives

By attending this seminar, you will be able to:

  • Formulate solutions to heat transfer problems to optimize component design for durability and cost
  • Make more reliable predictions of engine in-cylinder heat transfer rates (and therefore thermal stresses and fatigue life) for engine components, namely, the cylinder head, piston, cylinder liner, valves and ports
  • Optimize design decisions for above engine components by improving trade-offs between material choices, design, durability, packaging, heat flow map and cost
  • Specify thermal boundary conditions for under-hood and under-body CFD models early in a vehicle development program when only high level engine and performance metrics have been defined.
  • Predict energy losses due to bay-to-bay breathing
  • Describe techniques to facilitate thermal management of exhaust aftertreatment devices (DOC, SOC, particulate filters) and tail pipe exit gas temperatures for diesel vehicles
Who Should Attend
This course will be valuable to engine and vehicle engineers dealing with heat transfer issues. Specifically thermal and structural analysis engineers will learn best practices for making reliable analysis predictions. Hardware release engineers will gain a better appreciation of the limits and capabilities of the analysis and measurement technologies that drive their decisions. Supervisory and managerial persons with the responsibility for solving thermal problems that arise during sub-system design and development will gain a better appreciation of the uncertainties and trade-offs behind the thermal decisions for which they are ultimately responsible. Vehicle thermal engineers will gain knowledge to assist them in making design and packaging decisions in the early stages of vehicle development. This unique course will give in-depth insights into thermal considerations spanning the entire vehicle, providing subsystem specialists with an overall perspective of the other vehicle system issues and constraints with which they may not be familiar.
Prerequisites
Participants should have a mechanical engineering degree or equivalent experience.
Seminar Content

Day One

  • Introduction
    • Engine and exhaust components
    • Heat transfer CFD
  • Engine In-Cylinder Heat Transfer
    • Background
    • Benchmark in-cylinder measurements
    • Interaction of heat transfer with combustion
    • Zero & multi-dimensional modeling
    • Standard and modified wall functions
    • Low Reynolds Number Model
    • Heat transfer coefficients
    • Validation with measurements
  • Engine Component and Sub-System Heat Transfer
    • Overview
    • Piston, liner, head and valve temperatures
    • Bay-to-bay breathing
    • Engine cooling system considerations
    • Engine lubrication system considerations
Day Two
  • Exhaust System Heat Transfer
    • Interaction with under-hood components
    • Design decisions early in a vehicle program
    • Turbochargers
    • After treatment devices
    • Tail pipe gas temperatures
    • Materials, properties and temperatures
    • Thermo-mechanical fatigue
  • Heating, Ventilation and Air Conditioning
    • Passenger compartment human comfort
    • Energy transactions and heat transfer parameters
    • Energy balances
    • Air management
    • Refrigeration considerations
    • Windshield de-icing
  • Heat Exchangers
  • Battery Cooling
  • Best Practices and Challenges
    • Best practices for heat transfer modeling
    • Challenges in simulation and measurement

Instructor(s): Raj P. Ranganathan
Dr. Raj Ranganathan is currently a Senior Vice President (Technical) for Showatech, Inc. Prior to his current position, he was a Director at CD-Adapco. In addition, Dr. Ranganathan worked for General Motors and Caterpillar in the U.S. primarily in gasoline and diesel engines. He received GM¿s highest award for innovation, the 2007 Boss Kettering Award. He has been associated with SAE for 20 years and received the Forest McFarland Award in 2006. Raj has co-authored over 40 papers, patents, patents pending and proprietary research reports. Dr. Ranganathan received both a M.S. and Ph.D. in Mechanical Engineering with specialization in the area of heat transfer from Purdue University.
Fees: $1225 SAE Members*: $980 - $1103
* 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 1.3