EMISSION CONTROL OF TWO-STROKE MOTORCYCLE ENGINES BY THE BUTTERFLY EXHAUST VALVE

This paper discusses the butterfly exhaust valve system installed on the Yamaha RD400 Daytona Special, which is the only two-stroke cycle engine motorcycle in the controlled 400cc class. The paper also refers to the structure of the valve system and the principle of valve operation, as well as its effects on reducing exhaust emissions, improving brake specific fuel consumption, and increasing engine power at part-throttle.

• Supplemental Notes:
  • Prepared for SAE Meeting September 8-11, 1980.
• Corporate Authors:

  Society of Automotive Engineers (SAE)

  400 Commonwealth Drive
  Warrendale, PA  United States  15096
• Authors:
  • Tsuchiya, K
  • Hirano, S
  • Okamura, M
  • GOTOH, T
• Publication Date: 1980

Media Info

• Features: References;
• Pagination: 14 p.
• Serial:
  • Society of Automotive Engineers Preprint
  • Publisher: Society of Automotive Engineers (SAE)

Subject/Index Terms

• TRT Terms: Air quality management; Exhaust gases; Fuel consumption; Internal combustion engines; Machine valves; Motorcycles; Two stroke cycle engines; Vehicle power plants
• Old TRIS Terms: Automobile engines; Exhaust emission control
• Subject Areas: Energy; Highways; Vehicles and Equipment;

Filing Info

• Accession Number: 00334755
• Record Type: Publication
• Source Agency: Engineering Index
• Report/Paper Numbers: SAE 800973, HS-030 831
• Files: HSL, TRIS
• Created Date: Oct 28 1983 12:00AM