INCREASED FUEL ECONOMY IN TRANSPORTATION SYSTEMS BY USE OF ENERGY MANAGEMENT. VOLUME II. DIGITAL AUTOMOTIVE PROPULSION SIMULATOR PROGRAMS AND DESCRIPTION

Computer simulation programs are developed to simulate the performance of current motor vehicles over all types of driving cycles. The simulation includes the effect of the dynamic interactions among the powerplant and drivetrain components, and is quite sophisticated so as to accurately predict the performance changes produced by a wide range of vehicle modifications. Two versions have been developed - a real-time hybrid computer simulation and an all-digital batch program. The simulation results agree very well with experimental data for fuel consumption and NOX emissions. Better experimental transient emissions data are required, however, before it will be possible to accurately model HC and CO emissions. Simulation of vehicles with Continuously Variable Transmissions as a replacement for the current automatic transmission has shown that a considerable improvement in fuel mileage over present-day automobiles is possible. The report has been prepared in three volumes. Volume I contains the results and general discussion, Volume II is the complete documentation of the digital computer programs developed during the research effort, and Volume III presents the additional programming information necessary for running the real time interactive hybrid computer simulations.

• Supplemental Notes:
  • See also PB-248778.
• Corporate Authors:

  University of Wisconsin, Madison

  Engineering Experiment Station
  Madison, WI  United States  53706

  Department of Transportation

  Office of University Research, 1200 New Jersey Avenue, SE
  Washington, DC  United States  20590
• Authors:
  • Beachley, N H
  • Frank, A A
• Publication Date: 1974-12

Media Info

• Pagination: 337 p.

Subject/Index Terms

• TRT Terms: Automobiles; Automotive engineering; Computer programs; Digital computers; Digital simulation; Energy; Exhaust gases; Fuel consumption; Performance tests; Propulsion; Simulation; Transmissions; Vehicle drive systems; Vehicle power plants
• Identifier Terms: FORTRAN (Computer program language)
• Uncontrolled Terms: Propulsion systems; Revisions
• Old TRIS Terms: Digital systems; Motor vehicle drive systems; Motor vehicle engines
• Subject Areas: Energy; Geotechnology; Highways; Materials; Safety and Human Factors; Vehicles and Equipment;

Filing Info

• Accession Number: 00094395
• Record Type: Publication
• Source Agency: National Technical Information Service
• Report/Paper Numbers: DOT/TST-75/2-Vol-2 Final Rpt.
• Contract Numbers: DOT-OS-30112
• Files: TRIS, USDOT
• Created Date: Apr 21 1977 12:00AM