发明名称 |
Exhaust system of multi-cylinder internal combustion engine |
摘要 |
A plurality of upstream main exhaust passages extend from cylinders of an engine. A downstream main exhaust passage is connected to the upstream main exhaust passages. A main catalytic converter is mounted in the downstream main exhaust passage. A plurality of upstream bypass exhaust passages extend from the upstream main exhaust passages. Each upstream bypass exhaust passage has a sectional area smaller than that of the corresponding upstream main exhaust passage. A downstream bypass exhaust passage is connected to the upstream bypass exhaust passages and has a downstream end connected to the downstream main exhaust passage at a position upstream of the main catalytic converter. An auxiliary catalytic converter is mounted in the downstream bypass exhaust passage. A gas flow switching device is provided which is capable of forcing the exhaust gas from the cylinders of the engine to flow toward the upstream bypass exhaust passages when assuming a given operation position.
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申请公布号 |
US7726119(B2) |
申请公布日期 |
2010.06.01 |
申请号 |
US20050145962 |
申请日期 |
2005.06.07 |
申请人 |
NISSAN MOTOR CO., LTD. |
发明人 |
I SUNGI;INOUE TAKAO;NISHIZAWA KIMIYOSHI;MITSUISHI SHUNICHI |
分类号 |
F01N3/00;F01N3/20;F01N13/02;F01N13/10;F02F1/24;F02M25/07 |
主分类号 |
F01N3/00 |
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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