A novel logic system for minimizing on-board fuel consumption in the powertrain of a heat-engine/battery-electric hybrid vehicle is described. Performance data for highway driving are presented, indicating that specific fuel consumption, litres/100 tonne-km is lower than that of a subcompact car. The car can be driven as an all-electric, or with a heat-engine assist in the hybrid mode. The engine is not powerful enough for propulsion without electric assist, except at low speeds and with unacceptable acceleration. The logic system for management of power-sharing between the heat engine and the electric motor, which operates from lead batteries, precludes charging of the batteries from the engine. This maximizes the efficiency of use of on-board petroleum fuel when driving in the hybrid mode, and is a major factor contributing to the overall low fuel consumption characteristic.

Media Info

  • Features: Appendices; Figures; References;
  • Pagination: p. 127-150

Subject/Index Terms

Filing Info

  • Accession Number: 00399885
  • Record Type: Publication
  • Source Agency: National Highway Traffic Safety Administration
  • Report/Paper Numbers: ISATA 84008, HS-038 426
  • Files: HSL, USDOT
  • Created Date: Oct 31 1985 12:00AM