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Catalytic cleaning of automotive exhaust gases; Katalytische Reinigung von Kraftfahrzeugabgasen

Abstract

In the Clean Air Act of 1970 the US American Government set itself the goal of reducing pollutant emissions from automobiles to 10% of the original level. While it was very ambitious at the time, this goal has meanwhile been reached, at least in terms of the amount of pollution per vehicle. The period between 1981 and 1986 alone saw emission reductions in the USA of 65% for CO, 60% for HC, and 40% for NO{sub x}. The introduction of stringent limit values in Europe is in particular predicted to bring about drastic reductions in HC emissions. By the year 2010, after the phase-out of old vehicles without a cat, HC emissions are expected to have decreased to 20% of the 1990 level. A similar development has been predicted for CO emissions. As for NO{sub x} emissions there will at least be drastic reductions in spark ignition vehicles. However, this success will be neutralised for some part by the growing number of diesel vehicles and by increasing mileage. These figures show impressively that the use of catalytic converters in road vehicles has made a substantial contribution to relieving the environment and improving the quality of life and will continue to  More>>
Authors:
Domesle, R [1] 
  1. Degussa AG, Hanau (Germany)
Publication Date:
Dec 31, 1997
Product Type:
Miscellaneous
Report Number:
ETDE-DE-778
Reference Number:
SCA: 330700; PA: DE-99:0G7731; EDB-99:062721; SN: 99002103378
Resource Relation:
Other Information: PBD: 1997; Related Information: Is Part Of Noble metal emissions. Final presentation, Hanover, October 17/18, 1996; Pohl, D. [comp.]; PB: 114 p.; Edelmetall - Emissionen. Abschlusspraesentation, Hannover, 17. und 18. Oktober 1996. Kurzfassung der Vortraege; Oekologische Forschung
Subject:
33 ADVANCED PROPULSION SYSTEMS; EXHAUST GASES; CATALYTIC CONVERTERS; NITROGEN OXIDES; HYDROCARBONS; CARBON MONOXIDE; CHEMICAL REACTION KINETICS; PERFORMANCE; ALUMINIUM OXIDES; CERIUM OXIDES; ZIRCONIUM OXIDES; PLATINUM; PALLADIUM; RHODIUM
OSTI ID:
351454
Research Organizations:
GSF - Forschungszentrum fuer Umwelt und Gesundheit GmbH, Muenchen (Germany). Projekttraegerschaft `Umwelt- und Klimaforschung`
Country of Origin:
Germany
Language:
German
Other Identifying Numbers:
Other: ON: DE99749379; TRN: DE99G7731
Availability:
OSTI as DE99749379
Submitting Site:
DE
Size:
pp. 8-16
Announcement Date:

Citation Formats

Domesle, R. Catalytic cleaning of automotive exhaust gases; Katalytische Reinigung von Kraftfahrzeugabgasen. Germany: N. p., 1997. Web.
Domesle, R. Catalytic cleaning of automotive exhaust gases; Katalytische Reinigung von Kraftfahrzeugabgasen. Germany.
Domesle, R. 1997. "Catalytic cleaning of automotive exhaust gases; Katalytische Reinigung von Kraftfahrzeugabgasen." Germany.
@misc{etde_351454,
title = {Catalytic cleaning of automotive exhaust gases; Katalytische Reinigung von Kraftfahrzeugabgasen}
author = {Domesle, R}
abstractNote = {In the Clean Air Act of 1970 the US American Government set itself the goal of reducing pollutant emissions from automobiles to 10% of the original level. While it was very ambitious at the time, this goal has meanwhile been reached, at least in terms of the amount of pollution per vehicle. The period between 1981 and 1986 alone saw emission reductions in the USA of 65% for CO, 60% for HC, and 40% for NO{sub x}. The introduction of stringent limit values in Europe is in particular predicted to bring about drastic reductions in HC emissions. By the year 2010, after the phase-out of old vehicles without a cat, HC emissions are expected to have decreased to 20% of the 1990 level. A similar development has been predicted for CO emissions. As for NO{sub x} emissions there will at least be drastic reductions in spark ignition vehicles. However, this success will be neutralised for some part by the growing number of diesel vehicles and by increasing mileage. These figures show impressively that the use of catalytic converters in road vehicles has made a substantial contribution to relieving the environment and improving the quality of life and will continue to do so in future. [Deutsch] Die amerikanische Regierung trat 1970 im Clean Air Act mit der Vorgabe an, die Schadstoffe aus Kraftfahrzeugen auf 10% des urspruenglichen Wertes mindern zu wollen. Dieses Ziel war zum damaligen Zeitpunkt sehr hochgesteckt, ist aber inzwischen erreicht worden, was die Schadstoffmenge pro Fahrzeug angeht. Allein zwischen den Jahren 1981-86 wurde eine Schadstoffreduzierung um 65% fuer CO, 60% fuer HC und 40% fuer NO{sub x} in den USA festgestellt. Durch Einfuehrung der strengen Grenzwerte in Europa ist vor allem eine drastische Verminderung der HC-Emissionen prognostiziert. Diese sollen im Jahre 2010 nach Auslaufen der Altfahrzeuge ohne Katalysator noch 20% des Niveaus von 1990 betragen. Fuer CO werden aehnliche Verhaeltnisse erwartet. Bei den NO{sub x}-Emissionen wird im PKW-Bereich fuer Ottomotorfahrzeuge ebenfalls eine drastische Reduktion erreicht werden. Jedoch werden diese Erfolge zum Teil kompensiert durch steigenden Anteil von Dieselfahrzeugen und die hoehere Fahrleistung. Diese Zahlen zeigen eindrucksvoll, dass der Katalysatoreinsatz im Bereich der Strassenfahrzeuge einen wesentlichen Beitrag zur Entlastung der Umwelt und zur Erhoehung der Lebensqualitaet geleistet hat und auch in Zukunft noch leisten wird. (orig.)}
place = {Germany}
year = {1997}
month = {Dec}
}