Automotive gas turbine concepts with significant technological advantages over the spark ignition (SI) engine were assessed. Possible design concepts were rated with respect to fuel economy and near-term application. A program plan which outlines the development of the improved gas turbine (IGT) concept that best met the goals and objectives of the study identifies the research and development work needed to meet the goal of entering a production engineering phase by 1983. The fuel economy goal is to show at least a 20% improvement over a conventional 1976 SI engine/vehicle system. On the basis of achieving the fuel economy goal, of overall suitability to mechanical design, and of automotive mass production cost, the powertrain selected was a single-shaft engine with a radial turbine and a continuously variable transmission (CVT). Design turbine inlet temperature was 1150 C. Reflecting near-term technology, the turbine rotor would be made of an advanced superalloy, and the transmission would be a hydromechanical CVT. With successful progress in long-lead R&D in ceramic technology and the belt-drive CVT, the turbine inlet temperature would be 1350 C to achieve near-maximum fuel economy.

  • Supplemental Notes:
    • Volume 1 is HS-030 616.
  • Corporate Authors:

    Chrysler Corporation


    National Aeronautics and Space Administration

    600 Independence Avenue, SW
    Washington, DC  United States  20546
  • Publication Date: 1979-6

Media Info

  • Features: References;
  • Pagination: 196 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00318297
  • Record Type: Publication
  • Source Agency: National Technical Information Service
  • Report/Paper Numbers: NASA-CR-159672 Final Rpt., HS-030 652, DOE/NASA/2749-79/3V3
  • Contract Numbers: DE-AC02-76CS-52749, EC-77-A-31-1040
  • Files: HSL, TRIS
  • Created Date: Sep 16 1983 12:00AM