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EP0879633A2 Expired / Lapsed EP ⏱️ 0.0 years remaining

Process for cleaning a lean exhaust gas and catalyst system therefor

Assignee: Umicore AG and Co KG
•
Filing: 1998-04-21
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Granted: —
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Expires: 2018-04-21
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Abstract

Abstract Translated from German Die Erfindung betrifft ein Verfahren zur Reinigung des mageren Abgases von Magermotoren oder Dieselmotoren. Erfindungsgemäß wird das Abgas zunächst über einen Permanent-Reduktionskatalysator und anschließend über einen Stickoxid-Speicherkatalysator geleitet. Diese Vorgehensweise ergibt eine gleichbleibend gute Schadstoffumsetzung der Abgase bei unterschiedlichen Betriebsbedingungen sowohl bezüglich der Luftzahlen als auch bezüglich der Abgastemperaturen. The invention relates to a method for cleaning the lean exhaust gas from lean engines or diesel engines. According to the invention, the exhaust gas is first passed over a permanent reduction catalytic converter and then over a nitrogen oxide storage catalytic converter. This procedure results in consistently good pollutant conversion of the exhaust gases under different operating conditions both with regard to the air ratio and with regard to the exhaust gas temperatures.

Inventors

  • 👤 Wolfgang Dr. Strehlau
  • 👤 Egbert Dr. Lox
  • 👤 Thomas Dr. Kreuzer
  • 👤 Jürgen Höhne

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-11-01 03:26
CPC Classifications
B; B01; B01D; B01D53/00; B01D53/34; B01D53/92; B01D53/94; B01D53/9459; B01D53/9404; B01D53/9409; B01D53/9413; B01D53/9418; B01D53/9422; B01D2251/00; B01D2251/20; B01D2251/204; B01D2251/208; B01D2255/00; B01D2255/10; B01D2255/102; B01D2255/1021; B01D2255/1028; B01D2255/20; B01D2255/204; B01D2255/2042; B01D2255/206; B01D2255/2063; B01D2255/207; B01D2255/20738; B01D2255/20761; B01D2255/50; B01D2258/00; B01D2258/01; B01D2258/012; B01D53/9445; B01D53/945; B01D53/9477; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12

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