Since the early 1960's the Federal government, mindful that motor vehicles are the major source of air pollution, has developed increasingly stringent vehicle emission standards. In the late '60's Federal and state agencies initiated a series of studies and demonstrations aimed at determining the feasibility of certain alternatives to the internal combustion engine. Studies suggested that the external combustion engine (ECE) could become a workable alternative to the ICE. Although there are several classes of the ECE, the application of modern technology appeared, according to the authors, most promising in the case of the Rankine cycle engine. In early '71, the Dallas Transit System received an UMTA grant to develop and test an ECE engine in a small coach. The objective of the program was to determine the feasibility and access the pollution reduction value of installing and operating an organic rankine cycle propulsion system in a 25-passenger bus. Phase I consisted of system definition, fabrication, systems integration, installation and operational checkout of the Rankine Cycle (ORC) propulsion system consisting of burner heater, turbine engine, regenerator, condenser, etc. The transit bus used was a Twin Coach, model TC-25, manufactured by Highway Products, Inc., Kent, OH. This phase successfully demonstrated the feasibility of installing and operating an ORC engine in an urban bus. Results of Phase IA indicate that the bus meets the '75 Heavy Duty Diesel emission limits.

  • Corporate Authors:

    Dallas Area Rapid Transit

    P.O. Boc 660163, 1401 Pacific Avenue
    Dallas, TX  United States  75266-7213
  • Authors:
    • Watkins, E H
  • Publication Date: 1974-6

Media Info

  • Pagination: 187 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00261538
  • Record Type: Publication
  • Source Agency: Urban Mass Transportation Administration
  • Report/Paper Numbers: UMTA-TX-06-0004-74-1
  • Files: TRIS, USDOT
  • Created Date: Oct 22 1974 12:00AM