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Modeling and Analysis of Crankshaft Energy Harvesting for Vehicle Fuel Economy Improvement

Grimm, Benjamin Mihuta
http://rave.ohiolink.edu/etdc/view?acc_num=osu1339685318

Abstract Details

2012, Master of Science, Ohio State University, Mechanical Engineering.
Vehicle fuel economy improvement is currently a widespread theme in the automotive industry. To this effect, the U.S. Department of Energy has initiated a large-scale research project aimed specifically at the topic. In collaboration with Chrysler LLC, the Center for Automotive Research (CAR) at The Ohio State University has been commissioned to develop a Vehicle Energy Manager (VEM) designed to optimize energy flows within a vehicle. A comprehensive, forward-looking Vehicle Energy Simulator (VES) was developed as part of this project to serve as a control development platform for the VEM. The work presented herein relates to crankshaft energy harvesting as it pertains to conventional vehicles that are not equipped with the required hardware for typical regenerative braking. Rather, detailed management of engine-level ancillary loads coupled with driveline control strategies optimized for energy harvesting have been explored. Moreover, investigation of the potentials for kinetic energy recovery by displacing the use of friction brakes has been performed. It was found that, by reducing pumping losses during deceleration fuel shutoff (DFSO) and displacing 20% of the braking requirement during a FTP, a 1.8 MPG improvement could be realized for the vehicle studied. The energy recovery component corresponding to PMEP reduction through manipulation of throttle has been optimized by identifying instantaneous engine and powertrain states that maximize harvesting opportunities. Additional gains would accrue as the brake displacement percentage increases to near-hybrid levels.
Marcello Canova, PhD (Advisor)
Giorgio Rizzoni, PhD (Committee Member)
Fabio Chiara, PhD (Committee Member)
Shawn Midlam-Mohler, PhD (Committee Member)
206 p.
Mechanical Engineering
regenerative braking; crankshaft energy harvesting, DFSO, deceleration fuel shutoff, vehicle energy analysis

Recommended Citations

Citations

  • Grimm, B. M. (2012). Modeling and Analysis of Crankshaft Energy Harvesting for Vehicle Fuel Economy Improvement [Master's thesis, Ohio State University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=osu1339685318

    APA Style (7th edition)

  • Grimm, Benjamin. Modeling and Analysis of Crankshaft Energy Harvesting for Vehicle Fuel Economy Improvement. 2012. Ohio State University, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=osu1339685318.

    MLA Style (8th edition)

  • Grimm, Benjamin. "Modeling and Analysis of Crankshaft Energy Harvesting for Vehicle Fuel Economy Improvement." Master's thesis, Ohio State University, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=osu1339685318

    Chicago Manual of Style (17th edition)

osu1339685318
1,094
© 2012, all rights reserved.
This open access ETD is published by The Ohio State University and OhioLINK.