发明名称 |
Method for regenerating soot filters in the exhaust gas system of a lean mix engine, and exhaust gas system therefor |
摘要 |
To adhere to legal exhaust-gas regulations, the exhaust gases of a lean-burn engine must be freed from soot particles and nitrogen oxides. It is proposed that the cylinders of the lean-burn engine be divided into two groups which discharge their exhaust gases into two associated exhaust lines which each comprise a soot filter and which are merged at an opening-in point into a common exhaust line. The common exhaust line comprises the catalytic converter for the removal of the nitrogen oxides. By regenerating the two soot filters at different times, the exhaust-gas temperature in the common exhaust line is limited to a mean temperature between the exhaust-gas temperature of normal operation and that of regeneration operation, and the catalytic converter for the removal of the nitrogen oxides is preserved. |
申请公布号 |
US8327625(B2) |
申请公布日期 |
2012.12.11 |
申请号 |
US20080525190 |
申请日期 |
2008.01.31 |
申请人 |
ECKHOFF STEPHAN;GRISSTEDE INA;MUELLER WILFRIED;KREUZER THOMAS;UMICORE AG & CO. KG |
发明人 |
ECKHOFF STEPHAN;GRISSTEDE INA;MUELLER WILFRIED;KREUZER THOMAS |
分类号 |
F01N3/023;F01N3/10;F01N13/04 |
主分类号 |
F01N3/023 |
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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