DIESEL EMISSIONS

Time-resolved opacity measurements have been made at the exhaust port of a direct injection diesel engine. The opacity is stratified no more than a factor of two and shows significant cycle to cycle variations only near the smoke limit. Analysis of the results leads to the conclusion that droplet hydrocarbons exist in the port and have evaporated after flowing through an exhaust pipe one meter in length. Time-average particulate emissions have been mapped as a function of speed, load, dilution ratio, and filter temperature. Particle sizes have been measured as a function of speed and load. It is concluded that a model of the dilution process must admit multicomponent condensation and multilayer adsorption.

• Corporate Authors:

  Purdue University

  Automotive Transportation Center
  West Lafayette, Indiana,   United States  47907

  Department of Transportation

  1200 New Jersey Avenue, SE
  Washington, DC  United States  20590
• Authors:
  • Ferguson, C R
  • Kizawa, H
  • Gillette, A
• Publication Date: 1981-11

Media Info

• Features: Figures; References; Tables;
• Pagination: 108 p.

Subject/Index Terms

• TRT Terms: Diesel fuels; Exhaust gases; Hydrocarbons; Particulates
• Subject Areas: Highways; Vehicles and Equipment;

Filing Info

• Accession Number: 00368860
• Record Type: Publication
• Source Agency: National Highway Traffic Safety Administration
• Report/Paper Numbers: DOT-ATC-81-12 Final Rpt., HS-033 486
• Contract Numbers: DOT-RC-92004
• Files: HSL, TRIS, USDOT
• Created Date: Nov 30 1982 12:00AM