With the tightening of emissions standards in the United States , programmes of research being carried out by Ricardo include two concerned with reformulated fuels and two stroke petrol engines. Reformulated gasoline is described as gasoline chemically modified to reduce the most reactive exhaust products such as acetylenes and olefins. Using gas chromatography Richardo can quantify the hydrocarbons, unburnt and derived, from various petrols. Exhaust emissions are also studied before and after a catalyst. At lower temperatures only the most reactive compounds are eliminated. The relevance of this to catalyst efficiency and ageing is explored and recommendations made for the application of this to the design of fuels and catalysts. The renewed interest of companies around the world in the two-stroke engine is described and the reason suggested to be the availability of accurate fuel injection systems at reasonable cost and work on the orbital engine in Western Australia. Work carried out by Richardo on a solid injection, external scavenging 2-stroke is described. Other piston porting designs including the Chrysler and Subaru design are described. Poppet valve two strokes are thought to offer the most potential. The Toyota design and the more advanced Ricardo Flagship engine are examined in more detail. (TRRL)

  • Availability:
  • Corporate Authors:

    Mechanical Engineering Publications Limited

    P.O. Box 24, Northgate Avenue
    Bury St Edmunds, Suffolk IP32 6BW,   England 
  • Authors:
    • Bulmer, C
  • Publication Date: 0


  • English

Media Info

  • Pagination: p. 70-73
  • Serial:
    • Volume: 15
    • Issue Number: 2
    • Publisher: Institution of Mechanical Engineers
    • ISSN: 0307-6490

Subject/Index Terms

Filing Info

  • Accession Number: 00609765
  • Record Type: Publication
  • Source Agency: Transport and Road Research Laboratory (TRRL)
  • Files: ITRD, TRIS
  • Created Date: Jun 30 1991 12:00AM