THE USE OF A THERMOGRAVIMETRIC ANALYSER FOR THE INVESTIGATION OF PARTICULATES AND HYDROCARBONS IN DIESEL ENGINE EXHAUST

The conditions necessary for obtaining samples of diesel particulates in Constant Volume Sampling (CVS) tunnels were investigated for simultaneous analysis of gaseous hydrocarbons present in equilibrium with particulate borne hydrocarbons. Thermogravimetric analysis was developed for separating particulates components in a simple way. A reliable instrument was interfaced with a heated flame ionization detector (HFID) which gave additional or corroborative information. A system was evolved for total diesel hydrocarbon analysis, using thermogravimetry for hydrocarbons trapped on the particulate filter, and HFID for those passing through the filter. When the results were compared with total hydrocarbon analysis by the Federal Test Procedure, a small gain in hydrocarbon recovery was shown with an increase in overall information for the new system. Thermogravimetry was found to be a useful tool for diesel engine development, particularly if interfaced with a heated flame ionization analyser. Thermogravimetry offers a new way of reliably separating and describing the various groups of hydrocarbons in diesel exhaust which can be used by emissions laboratory staff. The CVS tunnel was shown to have good mixing and very low losses. Results confirm the validity of the diesel hydrocarbon analysis procedure by heated flame ionization detector (decreed by the Environmental Protection Agency), as long as the whole system is maintained at the correct temperature (190 degrees C).

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/01487191
• Supplemental Notes:
  • Presented at SAE Off-Highway Vehicle Meeting and Exposition, Milwaukee, 10-13 September 1979.
• Corporate Authors:

  Society of Automotive Engineers (SAE)

  400 Commonwealth Drive
  Warrendale, PA  United States  15096
• Authors:
  • Cuthbertson, R D
  • Stinton, H C
  • Wheeler, R W
• Publication Date: 1979

Media Info

• Features: References;
• Pagination: 20 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: Diesel engines; Exhaust gases; Hydrocarbons; Particulates; Thermogravimetric analysis
• Subject Areas: Safety and Human Factors;

Filing Info

• Accession Number: 00387452
• Record Type: Publication
• Source Agency: National Highway Traffic Safety Administration
• Report/Paper Numbers: SAE 790814, HS-029 394U
• Contract Numbers: EPA-68-02-2751
• Files: HSL, USDOT
• Created Date: Aug 30 1984 12:00AM