发明名称 |
Apparatus and method for monitoring NOx storage catalytic converters |
摘要 |
A method and apparatus is provided for monitoring the operation of a NOx storage catalytic converter in the exhaust stream of an internal combustion engine. The NOx content of the gas stream upstream and downstream of the catalytic converter is measured and used to determine storage efficiency. This is compared to a threshold value, and if the threshold value is not met a regeneration process is performed. The storage value is measured after regeneration to determine if the catalytic converter is faulty.
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申请公布号 |
US6499291(B2) |
申请公布日期 |
2002.12.31 |
申请号 |
US20010854735 |
申请日期 |
2001.05.14 |
申请人 |
VOLKSWAGEN AG |
发明人 |
LANG AXEL;DRUECKHAMMER JENS;SCHULZE FRANK |
分类号 |
F01N3/20;B01D53/86;B01D53/94;F01N3/08;F01N3/28;F01N9/00;F01N11/00;F02D41/02;F02D41/14;(IPC1-7):F01N3/00 |
主分类号 |
F01N3/20 |
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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