INCREASED FUEL ECONOMY IN TRANSPORTATION SYSTEMS BY USE OF ENERGY MANEGEMENT--THIRD YEAR'S PROGRAM

The results are reported of the third year of a three-year research program, the overall goal of which has been to conceive and evalaute practical ways to increase automobile fuel economy by energy management within the engine-transmission-vehicle system. The detailed design, construction, and preliminary evaluation of a Flywheel Energy Management Powerplant (FEMP) installed in a Pinto was studied. The vehicle has been built to experimentally verify performance simulations and to allow the practical aspects of a real flywheel vehicle to be studied. The FEMP consists basically of an internal combustion engine, a high-speed energy-storage flywheel, and a hydrostatic power-split continuously-variable transmission (CVT) system. The flywheel drives the car, and the engine comes on to "Recharge" it (with efficient wide-open throttle operation) only when the flywheel speed drops below a predetermined value. The concept also permits effective and efficient regenerative braking. Computer simulations have indicated an improvement in city fuel mileage of about 50%, with improvements of 100% appearing feasible with further research. Preliminary testing of the car shows favorable performance.

  • Supplemental Notes:
    • Sponsored by DOT, Office of the Secretary
  • Corporate Authors:

    University of Wisconsin, Madison

    Department of Civil and Environmental Engineering
    1415 Engineering Drive
    Madison, WI  USA  53706
  • Authors:
    • Beachley, N H
    • Frank, A A
  • Publication Date: 1976-7

Media Info

  • Features: Figures; Tables;
  • Pagination: 63 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00159620
  • Record Type: Publication
  • Source Agency: National Technical Information Service
  • Report/Paper Numbers: DOT-TST-77-21 Final Rpt.
  • Contract Numbers: DOT-OS-30112-Mod 3
  • Files: TRIS
  • Created Date: Dec 8 1977 12:00AM