PARAMETRIC SIMULATION OF THE FUEL CONSUMPTION EFFECTS OF ENGINE DESIGN VARIATION WITH ADVANCED TRANSMISSION POWERTRAINS

A generic simulation study examines the fuel economy interrelationship between basic engine design parameters and the choice of transmission, emphasizing the implications on engine design of the use of optimally shifted, advanced transmissions. A new engine model and a vehicle simulation package were combined to assess, with both conventional and optimal shifting, the fuel economy effects, without octane or emission constraints, of variation in bore-to-stroke ratio, compression ratio, cam timing, displacement, and friction level. The fuel economy interaction between the engine technology and the type of transmission was also assessed, using measured fuel flow information on a series of diesel and PROCO engines. In the course of this work, the fundamental factors which determine the fuel economy improvement associated with optimal shifting were identified. The fuel economy effects of engine changes were, in general, quantitatively similar for both conventionally and optimally shifted transmissions.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/01487191
• Supplemental Notes:
  • Passenger Car Meeting Dearborn, Michigan, October 1-4, 1984.
• Corporate Authors:

  Society of Automotive Engineers (SAE)

  400 Commonwealth Drive
  Warrendale, PA  United States  15096
• Authors:
  • Kuzak, D M
  • Belaire, R C
  • Le, S
  • Brigham, D R
• Publication Date: 1984

Media Info

• Features: Appendices; Figures; References; Tables;
• Pagination: 13 p.
• Serial:
  • SAE Technical Paper
  • Publisher: Society of Automotive Engineers (SAE)
  • ISSN: 0148-7191
  • EISSN: 2688-3627
  • Serial URL: http://papers.sae.org/

Subject/Index Terms

• TRT Terms: Compression; Continuously variable transmissions; Diesel engines; Engine displacement; Engines; Flow; Friction; Fuel conservation; Fuel consumption; Fuels; Simulation; Transmissions; Valve timing; Vehicle design
• Old TRIS Terms: Bore-to-stroke ratios; Compression ratio; Engine design; Fuel flow
• Subject Areas: Design; Energy; Safety and Human Factors; Vehicles and Equipment;

Filing Info

• Accession Number: 00395774
• Record Type: Publication
• Source Agency: National Highway Traffic Safety Administration
• Report/Paper Numbers: SAE 841243, HS-038 298
• Files: HSL, USDOT
• Created Date: Jun 30 1985 12:00AM