CATALYST REGENERATION VIA CHEMICAL TREATMENT AND EMISSION TESTS AT IDLE SPEEDS

The present paper examines the possibility of chemical treatment of used catalysts for the purpose of improving catalytic efficiency. The proposed method inserts the catalyst in a bath of a strong organic solvent that dissolves oil, soot and fuel residues, cleaning the active surface of the catalyst. The tests were conducted at low (750 r/min) and high (3100 r/min) idle speeds. The experimental results based on CO, HC and catalyst inlet-outlet temperature difference measurements indicate that after treatment the catalytic efficiency improves considerably (greater than 25 per cent) at low idle (750 r/min). The improvement is even higher at high idle (3100 r/min), exceeding 40 per cent. Therefore, there are strong indications that, if car catalysts underwent a similar treatment at regular service intervals, eg every 20,000 km, engine emissions could be considerably reduced and catalyst operational life extended. (A)

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/09544070
• Corporate Authors:

  PROFESSIONAL ENGINEERING PUBLICATIONS LTD

  NORTHGATE AVENUE
  BURY ST EDMUNDS, SUFFOLK  United Kingdom  IP32 6BW
• Authors:
  • ARAPATSAKOS, C I
  • SPARIS, P D
• Publication Date: 1999

Language

• English

Media Info

• Features: References;
• Pagination: p. 359-64
• Serial:
  • Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering
  • Volume: 213
  • Issue Number: D4
  • Publisher: Sage Publications Limited
  • ISSN: 0954-4070
  • EISSN: 2041-2991
  • Serial URL: http://pid.sagepub.com/content/current

Subject/Index Terms

• TRT Terms: Catalytic converters; Chemistry; Economic efficiency; Engine idling; Exhaust pipes; Pollutants; Tests
• Uncontrolled Terms: Efficiency
• ITRD Terms: 1394: Catalytic converter; 7165: Chemistry; 5911: Efficiency; 2442: Emission; 1384: Exhaust pipe; 1808: Idling (engine); 6255: Test
• Subject Areas: Economics; Environment; Vehicles and Equipment;

Filing Info

• Accession Number: 00793683
• Record Type: Publication
• Source Agency: Transport Research Laboratory
• Files: ITRD
• Created Date: Jun 15 2000 12:00AM