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Modeling, Validation and Analysis of an Advanced Thermal Management System for Conventional Automotive Powertrains

Agarwal, Neeraj R.
http://rave.ohiolink.edu/etdc/view?acc_num=osu1338383355

Abstract Details

2012, Master of Science, Ohio State University, Mechanical Engineering.
Reducing vehicle fuel consumption while maintaining same or better performance characteristics has been one of the main focuses of auto car manufacturers. In this sense, OEMs are introducing thermal management system (TMS) in modern vehicles that help attain rapid fluid warm-up during cold-start conditions. This leads to lower fluid viscosities early on in a drive cycle and hence reduced losses in the engine and powertrain components, resulting in lower fuel consumption. Rapid fluid warm-up also helps improve passenger comfort by providing necessary heating or cooling on demand. Through this work, a model characterizing the low frequency energy and power transfer in the engine and powertrain components is formulated. An advanced TMS consisting of components for waste heat energy recovery is proposed and its model is formulated. The combined set of these models is called the Vehicle Energy Simulator (VES). The model is thoroughly calibrated and validated using experimental data from steady state and transient testing; results are included in detail. The validated VES is then used to investigate control strategies for valves that are part of the TMS, used to control fluid flow to the various heat exchangers in order to attain rapid warm-up of coolant, engine oil and transmission fluid. It is seen that, the use of advanced TMS, over a conventional thermal management system, results in 3.4% reduction in fuel consumption. The investigation leads to recommendation of a reasonable first generation for a genetic algorithm optimization to be used to find the “optimal trajectory” for thermal-system-valve actuation during a drive cycle for reducing fuel consumption.
Marcello Canova, PhD (Advisor)
Giorgio Rizzoni, PhD (Committee Member)
Fabio Chiara, PhD (Committee Member)
Shawn Midlam-Mohler, PhD (Committee Member)
293 p.
Automotive Engineering; Engineering
Engine Thermal Management; Engine Modeling; Heat Exchanger Modeling; Thermal Management System; Control-Oriented Model

Recommended Citations

Citations

  • Agarwal, N. R. (2012). Modeling, Validation and Analysis of an Advanced Thermal Management System for Conventional Automotive Powertrains [Master's thesis, Ohio State University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=osu1338383355

    APA Style (7th edition)

  • Agarwal, Neeraj. Modeling, Validation and Analysis of an Advanced Thermal Management System for Conventional Automotive Powertrains. 2012. Ohio State University, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=osu1338383355.

    MLA Style (8th edition)

  • Agarwal, Neeraj. "Modeling, Validation and Analysis of an Advanced Thermal Management System for Conventional Automotive Powertrains." Master's thesis, Ohio State University, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=osu1338383355

    Chicago Manual of Style (17th edition)

osu1338383355
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© 2012, all rights reserved.
This open access ETD is published by The Ohio State University and OhioLINK.