TESTS ON THE LONG-TERM BEHAVIOUR OF EMISSIONS FROM MOTOR VEHICLES EQUIPPED WITH CATALYTIC CONVERTERS

UNTERSUCHUNGEN ZUM LANGZEITVERHALTEN DER EMISSIONEN VON KRAFTFAHRZEUGEN MIT KATALYSATOR

On behalf of the "Hessische Landesanstalt fuer Umwelt" (Environmental Agency of the Land of Hesse), the long-term behavior of motor vehicles equipped with catalytic converters for exhaust purification was studied (91 cars, 45 VW buses, 8 measurement series). The concentrations behind the catalytic converter of carbon monoxide, hydrocarbons and nitrogen monoxide were determined in the following load states: idling, increased idling, and 7 kW output at 50 km/h. The descriptions of the test vehicles are followed by equipment, and further tests (conversion degrees, US-Test-75). The measurement results of performance/consumption and emission values were evaluated. Overall it was found that the computer-controlled catalytic converter is excellently suited to convert the above pollutants, whereby, however, catalyst ageing leads to increased NO concentrations after approximately 100,000 km running.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/3890261035
• Supplemental Notes:
  • U.S. sales only.
• Corporate Authors:

  Hessische Landesanstalt fuer Umwelt

  Wiesbaden,   Germany 
• Authors:
  • Hoene, I
  • Krowas, J
  • Weyrauther, G
• Publication Date: 1990-4

Language

• German

Media Info

• Pagination: 69 p.

Subject/Index Terms

• TRT Terms: Carbon monoxide; Catalytic converters; Emissions testing; Engine idling; Hydrocarbons; Measurement; Nitrogen compounds; Pollutants; Time duration
• Uncontrolled Terms: Long term
• Old TRIS Terms: Hydrocarbon emissions
• Subject Areas: Environment; Highways; Vehicles and Equipment;

Filing Info

• Accession Number: 00634637
• Record Type: Publication
• ISBN: 3890261035
• Report/Paper Numbers: ETDE-mf-93702119
• Files: TRIS
• Created Date: Aug 16 1993 12:00AM