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Model-Based Design and Analysis of Thermal Systems for the Ohio State EcoCAR Mobility Challenge Vehicle

Dalke, Phillip Allen
http://rave.ohiolink.edu/etdc/view?acc_num=osu159545443238678

Abstract Details

2020, Master of Science, Ohio State University, Mechanical Engineering.
The Ohio State EcoCAR team is a student project team at The Ohio State University providing real-world engineering experience and learning opportunities to engineering students. The EcoCAR Mobility Challenge is sponsored by the U.S. Department of Energy, General Motors, and The Mathworks and challenges twelve universities across the United States and Canada to redesign and reengineer a 2019 Chevrolet Blazer into a hybrid-electric vehicle. The goal of the competition is for students to develop and implement technologies to reduce the vehicle’s environmental impact while maintaining performance and to enhance the vehicle with connected and automated technologies for a future in the mobility-as-a-service market. The transition from conventional to hybrid vehicle requires the addition of several hybrid powertrain components, including electric motors, power inverters, and a high voltage battery. These new components have thermal cooling requirements and require the integration of a dedicated thermal management system to prevent components from overheating and to maintain optimal operating temperature. This work models the thermal systems of the internal combustion engine and hybrid powertrain components to provide estimates for component temperatures during steady-state operation and predetermined drive cycles. The GT-Suite modeling software package from Gamma Technologies was chosen to model the two thermal systems because of its extensive library of pre-validated automotive grade component models. This library allowed component models to be built quickly and without extensive data collection. The thermal system models were integrated with a full-vehicle model of the OSU EcoCAR team’s vehicle in Simulink. This work seeks to provide a reasonable approximation of the integrated thermal systems in the OSU EcoCAR vehicle, with provisions to update and calibrate the model in the future. The model provides both steady-state and drive cycle feedback from a Simulink input. A sensitivity analysis was performed to determine the most influential model parameters to help prioritize future calibration efforts. It was determined that the radiator heat transfer rate had the most significant impact on the engine cooling loop temperatures and the electronics coolant pump flow rate had the most significant impact on the hybrid powertrain component temperatures.
Shawn Midlam-Mohler (Advisor)
Giorgio Rizzoni (Committee Member)
113 p.
Engineering; Mechanical Engineering
thermal; automotive; thermal management; ecocar; GT Suite; thermal model; hybrid; hybrid vehicle; hybrid thermal system; hybrid thermal management; engine thermal model; radiator model;

Recommended Citations

Citations

  • Dalke, P. A. (2020). Model-Based Design and Analysis of Thermal Systems for the Ohio State EcoCAR Mobility Challenge Vehicle [Master's thesis, Ohio State University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=osu159545443238678

    APA Style (7th edition)

  • Dalke, Phillip. Model-Based Design and Analysis of Thermal Systems for the Ohio State EcoCAR Mobility Challenge Vehicle. 2020. Ohio State University, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=osu159545443238678.

    MLA Style (8th edition)

  • Dalke, Phillip. "Model-Based Design and Analysis of Thermal Systems for the Ohio State EcoCAR Mobility Challenge Vehicle." Master's thesis, Ohio State University, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=osu159545443238678

    Chicago Manual of Style (17th edition)

osu159545443238678
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This open access ETD is published by The Ohio State University and OhioLINK.