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Analytical Study of Thermal Management: A Case Study of Underhood Configurations
Technical Paper
2015-01-0335
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Due to ever-tightening CO2 regulations on passenger vehicles, it is necessary to find novel methods to improve powertrain system efficiency. These increases in efficiency should generally be cost effective so that the customer perceives that they add value. One approach for improving system efficiency has been the use of thermal energy management. For example, changing the flow of, or reusing “waste” heat from the powertrain to improve efficiency.
Due to the interactions involved with thermal management, a system level approach is useful for exploring, selecting, and developing alternative solutions. It provides a structured approach to augment the right kind of synergies between subsystems and mitigate unintended consequences. However, one challenge with using these approaches early in a program is having appropriate metrics for assessing key aspects of the system behaviors. This paper discusses a metric for use in analytical studies of vehicle thermal management which enables comparison of system architectures and their implications on subsystem thermal interactions.
A case study of underhood configurations is considered to illustrate the application of this metric. Inclusion and placement of underhood technologies such as active and passive aerodynamic systems (e.g., active grille shutters and belly pans, respectively) are evaluated. Using a system integrated thermal management model, such a metric enables decision-making regarding (1) technologies to be implemented based on benefits and trade-offs; (2) sizing and selection of components or entire systems for a chosen technology; and (3) the system level impacts of these decisions. This methodology yields system level thermal behaviors in a robust manner to provide comparative feedback about underhood architectures, with respect to some predetermined baseline.
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Citation
Makam, S., Dubbs, C., Roosien, Y., Lin, F. et al., "Analytical Study of Thermal Management: A Case Study of Underhood Configurations," SAE Technical Paper 2015-01-0335, 2015, https://doi.org/10.4271/2015-01-0335.Also In
References
- Jansen , W. Current Challenges in Vehicle Thermal Management Keynote Presentation at SAE Thermal Management Systems Symposium Sept. 2014
- Shayler , P. , Christian , S. , and Ma , T. A Model for the Investigation of Temperature, Heat Flow and Friction Characteristics During Engine Warm-Up SAE Technical Paper 931153 1993 10.4271/931153
- Gamma Technologies Modeling Applications Manual Cooling Systems and Thermal Management Applications Manual Oakmont, IL
- Maxwell , A. S. , Broughton , W. R. , Dean , G. , Sims , G. D. Review of accelerated ageing methods and lifetime prediction techniques for polymeric materials NPL Report, DEPC MPR 016 March 2005 1744-0270
- Pfeifer , C. Evolution of Active Grille Shutters SAE Technical Paper 2014-01-0633 2014 10.4271/2014-01-0633
- Makam , S. , Roosien , Y. , Dubbs , C. , Lin , F. , Resh , W. Analytical Approaches to Thermal Management: Impact of Underhood Modeling GT Conference 2014 - Vehicle and Powertrain System Simulation November 2014