- 专利标题： Device for purifying exhaust gas of internal combustion engine
- 专利标题（中）： 内燃机废气净化装置
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申请号： US68684申请日： 1998-05-13
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公开(公告)号： US6119452A公开(公告)日： 2000-09-19
- 发明人: Yukio Kinugasa , Kouhei Igarashi , Takaaki Itou , Naoto Suzuki , Takehisa Yaegashi , Toshiaki Tanaka , Naoto Miyoshi
- 申请人： Yukio Kinugasa , Kouhei Igarashi , Takaaki Itou , Naoto Suzuki , Takehisa Yaegashi , Toshiaki Tanaka , Naoto Miyoshi
- 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： JPX7-299935 19951117
- 主分类号： B01D53/86
- IPC分类号： B01D53/86 ; B01D53/94 ; F01N3/08 ; F01N3/20 ; F01N13/02 ; F01N13/04 ; F02B1/04 ; F02D41/02 ; F02D41/14 ; F01N3/00
摘要：
A three-way catalyst (8a) is connected to a first cylinder group 1a. The exhaust gas of the first cylinder group (1a), which has passed through the three-way catalyst (8a), and the exhaust gas of a second cylinder group (1b) are introduced to an exhaust gas purifying catalyst (14). The second cylinder group (1b) performs the lean operation. The first cylinder group (1a) performs the rich operation to synthesize NH.sub.3 from NO.sub.X in the exhaust gas of the first cylinder group (1a) in the three-way catalyst (8a). In the exhaust gas purifying catalyst (14), NO.sub.X in the exhaust gas of the second cylinder group 1b is purified by NH.sub.3 from the three-way catalyst (8a). The amount of HC flowing to the three-way catalyst (8a) is obtained. When the HC amount exceeds a predetermined amount, the first cylinder group 1a must perform the lean operation temporarily, to thereby maintain the excellent catalytic activity of the three-way catalyst (8a).
公开/授权文献
- USD411075S Braided bottom loaf pan 公开/授权日：1999-06-15
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