发明名称 |
PROCESS FOR REGENERATING A NITROGEN OXIDE STORAGE CATALYST |
摘要 |
The present invention provides a process and a device for regeneration of a nitrogen oxide storage catalyst in the exhaust system of a diesel engine. Th e process comprises a first and a second regeneration strategy. The first regeneration strategy is applied when the exhaust gas temperature is above a threshold value and comprises changing the air/fuel-ratio from a lean to a rich value during a first regeneration period. The second regeneration strategy is applied when the exhaust gas temperature is below a threshold value and comprises switching the air/fuel-ratio back and forth between lean and rich air/fuel-ratios, forming a sequence of between 2 and 10 rich pulses and between 2 and 10 lean pulses during a second regeneration period.
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申请公布号 |
CA2435324(A1) |
申请公布日期 |
2004.01.31 |
申请号 |
CA20032435324 |
申请日期 |
2003.07.17 |
申请人 |
OMG AG & CO. KG |
发明人 |
KREUZER, THOMAS;LOX, EGBERT;KATTWINKEL, PETER;ROHR, FRIEDEMANN;PETER, STEFAN DIETRICH |
分类号 |
F02D45/00;B01D53/94;B01D53/96;B01J38/00;F01N3/08;F01N3/20;F01N3/24;F01N3/28;F02D41/02;F02D41/04;(IPC1-7):B01D53/96;B01J38/14 |
主分类号 |
F02D45/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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