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.
- Sponsored by DOT, Office of the Secretary
University of Wisconsin, MadisonDepartment of Civil and Environmental Engineering
1415 Engineering Drive
Madison, WI USA 53706
- Beachley, N H
- Frank, A A
- Publication Date: 1976-7
- Features: Figures; Tables;
- Pagination: 63 p.
- TRT Terms: Automobiles; Braking; Electric power plants; Energy; Flywheels; Fuel consumption; Internal combustion engines; Transmissions; Transportation; Vehicle power plants
- Uncontrolled Terms: Transportation systems
- Old TRIS Terms: Automobile engines
- Subject Areas: Economics; Energy; Safety and Human Factors; Society; Transportation (General);
- 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