Design study of flywheel: CVT - heat engine vehicle propulsion system - Phase I. Final report, Volume 1

Technical Report · Tue Dec 01 04:00:00 EST 1981

OSTI ID:5229305

Kalns, I

This report describes work under Lawrence Livermore National Laboratory subcontract 9515409 to make a preliminary design of a vehicle propulsion system as Phase I of a broader effort to successfully demonstrate mechanical energy storage technology potential for fuel economy improvement in vehicular systems. A heat engine-flywheel-CVT (continuously variable transmission) drivetrain and controls for an automotive propulsion system were conceptualized. Two preliminary layouts of the engine-flywheel-CVT system were completed and indicate compact size and suitability for installation in an x-body car. A mathematical model was formulated, and computer simulations of the system were performed over the Federal Urban Driving Cycle. They indicated 15% and 34% fuel economy improvement over a conventionally equipped vehicle. Efficiency tests of a potentially suitable continuously variable element of the advanced transmission were made to provide data for the computer simulation. Based on the results of the study, future research should concentrate on advanced CVT transmissions for flywheel propulsion to substantially broaden their high efficiency ratio range, and estimates of life cycle cost benefits should be made.

• Research Organization: Lawrence Livermore National Lab., CA (USA); Eaton Corp., Southfield, MI (USA). Engineering and Research Center
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 5229305
• Report Number(s): UCRL-15471-Vol.1; ERC-TR-8148; ON: DE82017556
• Country of Publication: United States
• Language: English

Related Subjects

25 ENERGY STORAGE
250500 -- Energy Storage-- Flywheels
33 ADVANCED PROPULSION SYSTEMS
330400* -- Advanced Propulsion Systems-- Hybrid Systems
330602 -- Vehicle Design Factors-- Engine-Transmission Matching
AUTOMOBILES
COMPUTERIZED SIMULATION
COST
DATA
DESIGN
ENERGY CONSUMPTION
ENERGY STORAGE
ENGINES
EXPERIMENTAL DATA
FLYWHEEL ENERGY STORAGE
FLYWHEEL-POWERED VEHICLES
FUEL ECONOMY
HEAT ENGINES
HYBRID SYSTEMS
INFORMATION
INTERNAL COMBUSTION ENGINES
MACHINE PARTS
MECHANICAL TRANSMISSIONS
NUMERICAL DATA
PERFORMANCE
PERFORMANCE TESTING
SIMULATION
STORAGE
TESTING
THEORETICAL DATA
VEHICLES