COMPUTER PREDICTION OF POWER AND NOISE FOR TWO-STROKE ENGINES WITH POWER TUNED SILENCED EXHAUSTS

A research effort sponsored by Yamaha Motors, LTD. was undertaken to investigate exhaust system and exhaust silencing concepts for two-stroke engines. A complete one-dimensional gas dynamic computer program was developed for power-tuned exhaust systems. An overall engine-model has been developed for simulation of the internal gas dynamic behavior throughout the engine. This model includes the combustion and induction aspects of the engine cycle as well as a simplified exhaust system model. Engine power and torque can be predicted. Both analytical and experimental programs are described for simulation and testing of candidate mufflers and muffling techniques. /GMRL/

• Corporate Authors:

  Society of Automotive Engineers (SAE)

  400 Commonwealth Drive
  Warrendale, PA  United States  15096
• Authors:
  • KARNOPP, D C
  • Duyer, H A
  • Margolis, D L
• Publication Date: 1975-8

Media Info

• Pagination: 14 p.

Subject/Index Terms

• TRT Terms: Computer programs; Emission control systems; Engines; Exhaust gases; Forecasting; Mathematical models; Mufflers; Noise; Power; Testing; Torque; Two stroke cycle engines
• Uncontrolled Terms: Models
• Subject Areas: Energy; Environment; Highways; Safety and Human Factors; Vehicles and Equipment;

Filing Info

• Accession Number: 00130772
• Record Type: Publication
• Report/Paper Numbers: SAE #750708
• Files: TRIS
• Created Date: Apr 21 1976 12:00AM