发明名称 |
Method for checking a three-way exhaust catalytic converter of an internal-combustion engine |
摘要 |
To check a three-way catalytic converter, a NOx sensor is used to determine the NOx concentration downstream of the catalytic converter that is to be diagnosed. On account of the close relationship between a NOx conversion and a HC conversion, the measured NOx concentration can be used to determine the HC conversion properties of the three-way catalytic converter.
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申请公布号 |
US6658841(B2) |
申请公布日期 |
2003.12.09 |
申请号 |
US20020042105 |
申请日期 |
2002.01.07 |
申请人 |
SIEMENS AKTIENGESELLSCHAFT |
发明人 |
BEER JOHANNES;ZHANG HONG |
分类号 |
F01N3/32;F01N11/00;F02D41/02;F02D41/06;F02D41/14;(IPC1-7):F01N3/00 |
主分类号 |
F01N3/32 |
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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