发明名称 |
Exhaust gas purification device |
摘要 |
A catalytic converter (9) is interposed in an exhaust passage (3) of an internal combustion engine (1). In the converter (9), a plurality of carriers (21A-21D) are disposed in series with gaps (G1-G3). Each carrier (21A-21D) comprises a hydrocarbon trapping layer (25), a three-way catalyst layer (26) and a number of passages (24) facing the three-way catalyst layer (26). The gaps (G1-G3) interrupts heat transfer between the carriers in order to retard temperature increase in the hydrocarbon trapping layer (25) and promotes a turbulence in exhaust gas flow in the converter (9) in order to homogenize the exhaust gas dispersion in a radial direction, thereby enhancing the hydrocarbon purification performance of the converter (9). <IMAGE>
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申请公布号 |
EP1357269(A2) |
申请公布日期 |
2003.10.29 |
申请号 |
EP20030007978 |
申请日期 |
2003.04.09 |
申请人 |
NISSAN MOTOR CO., LTD. |
发明人 |
ASHIDA, MASAAKI;MORI, KOUICHI;MITSUISHI, SHUNICHI;UGOMORI, YOSHINAO |
分类号 |
B01D53/94;F01N3/08;F01N3/28;F01N13/02;(IPC1-7):F01N3/24 |
主分类号 |
B01D53/94 |
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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