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Hariharan_Rangarajan_MSME.pdf (4.19 MB)

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Development and Testing of Control Strategies for the Ohio State University EcoCAR Mobility Challenge Hybrid Vehicle

Rangarajan, Hariharan
http://rave.ohiolink.edu/etdc/view?acc_num=osu1626892484088926

Abstract Details

2021, Master of Science, Ohio State University, Mechanical Engineering.
The EcoCAR Mobility Challenge is a four-year design cycle which tasks teams with designing a hybrid Chevrolet Blazer that serves the commuter market by efficiently providing a Mobility-as-a-Service. In Year 1 of the competition the OSU EcoCAR team selected a series-parallel hybrid architecture and defined vehicle performance goals to be achieved at the end of the development cycle. In Year 2, the stock GM Blazer was modified and hybrid propulsion components – a downsized 2.0L engine, P0 motor and P4 motor – were integrated and rear powertrain modifications were made. A full vehicle model, driver model, and HIL test harness for the EcoCAR hybrid vehicle was set up and the development of a Hybrid Supervisory Controller (HSC) was started. Components were bench tested after integration into the vehicle. In Year 3, the various algorithms necessary to achieve baseline functionality of the EcoCAR vehicle were developed and tested. A V-systems engineering process was followed to design control strategies from defined system requirements and constraints. Engine torque control was achieved by manipulating ACC (Adaptive Cruise Control) CAN messages through an Engine Control Module gateway. A simple REM torque assist strategy and a series charging algorithm utilizing the BAS were developed and implemented in the vehicle. The vehicle completed 200+ miles of VIL testing at the Transportation Research Center (TRC), maintaining SoC between 30-80% and meeting acceleration requests in performance mode. Methods to improve fuel economy with an energy management strategy has also been discussed for refining the HSC in Year 4.
Shawn Midlam-Mohler (Advisor)
Rizzoni Giorgio (Committee Member)
102 p.
Automotive Engineering; Mechanical Engineering
Control strategy series parallel hybrid EcoCAR Rule-Based functionality torque assist heuristic calibration requirements baseline functionality system safety vehicle development process

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Citations

  • Rangarajan, H. (2021). Development and Testing of Control Strategies for the Ohio State University EcoCAR Mobility Challenge Hybrid Vehicle [Master's thesis, Ohio State University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=osu1626892484088926

    APA Style (7th edition)

  • Rangarajan, Hariharan. Development and Testing of Control Strategies for the Ohio State University EcoCAR Mobility Challenge Hybrid Vehicle. 2021. Ohio State University, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=osu1626892484088926.

    MLA Style (8th edition)

  • Rangarajan, Hariharan. "Development and Testing of Control Strategies for the Ohio State University EcoCAR Mobility Challenge Hybrid Vehicle." Master's thesis, Ohio State University, 2021. http://rave.ohiolink.edu/etdc/view?acc_num=osu1626892484088926

    Chicago Manual of Style (17th edition)

osu1626892484088926
105
© 2021, all rights reserved.
This open access ETD is published by The Ohio State University and OhioLINK.