发明授权
- 专利标题： Exhaust purification device of internal combustion engine
- 专利标题（中）： 内燃机排气净化装置
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申请号： US256922申请日： 1994-07-29
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公开(公告)号： US5473890A公开(公告)日： 1995-12-12
- 发明人: Shinichi Takeshima , Satomi Seto , Toshiaki Tanaka , Satoshi Iguchi , Kiyoshi Nakanishi , Kenji Katoh
- 申请人： Shinichi Takeshima , Satomi Seto , Toshiaki Tanaka , Satoshi Iguchi , Kiyoshi Nakanishi , Kenji Katoh
- 申请人地址： JPX Toyota
- 专利权人： Toyota Jidosha Kabushiki Kaisha
- 当前专利权人： Toyota Jidosha Kabushiki Kaisha
- 当前专利权人地址： JPX Toyota
- 优先权： JPX4-324279 19921203; JPX5-015602 19930202; JPX5-138586 19930610
- 主分类号： B01D53/04
- IPC分类号： B01D53/04 ; B01D53/86 ; B01D53/94 ; F01N3/08 ; F01N3/20 ; F01N9/00 ; F01N13/02 ; F02B1/04 ; F02D41/02
摘要：
An NO.sub.x absorbent (19) which absorbs NO.sub.x when an air-fuel ratio of an inflowing exhaust gas is lean, while releases the absorbed NO.sub.x when lowering an oxygen concentration in the inflowing exhaust gas, is arranged in an exhaust passage of an internal combustion engine. An SO.sub.x absorbent (18) which absorbs SO.sub.x when the air-fuel ratio of the inflowing exhaust gas is lean, while releases the absorbed SO.sub.x when the air-fuel ratio of the inflowing exhaust gas is made rich is arranged in the exhaust passage on the upstream side of the NO.sub.x absorbent (19). When the lean air-fuel mixture is burned, the SO.sub.x is absorbed into the SO.sub.x absorbent (18) and, at the same time, the NO.sub.x is absorbed into the NO.sub.x absorbent (19), and when the air-fuel ratio of the air-fuel mixture is switched from lean to rich, SO.sub.x is released from the SO.sub.x absorbent (18), and NO.sub.x is released from the SO.sub.x absorbent (19 ).
公开/授权文献
- USD311785S Manicurist stand 公开/授权日：1990-10-30