发明授权
- 专利标题： Apparatus for controlling exhaust concentration
- 专利标题（中）： 用于控制排气浓度的装置
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申请号： US883200申请日： 1992-05-14
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公开(公告)号： US5357749A公开(公告)日： 1994-10-25
- 发明人: Minoru Ohsuga , Toshimichi Minowa , Nobuo Kurihara , Yoshishige Ohyama
- 申请人： Minoru Ohsuga , Toshimichi Minowa , Nobuo Kurihara , Yoshishige Ohyama
- 申请人地址： JPX Tokyo
- 专利权人： Hitachi Ltd.
- 当前专利权人： Hitachi Ltd.
- 当前专利权人地址： JPX Tokyo
- 优先权： JPX3-107951 19910514
- 主分类号： B01D53/30
- IPC分类号： B01D53/30 ; B01D53/94 ; F01N3/20 ; F01N3/22 ; F01N3/24 ; F01N3/28 ; F01N3/30 ; F01N9/00 ; F02B31/00 ; F02D21/08 ; F02D35/00 ; F02D41/00 ; F02D41/14 ; F02M69/08 ; F02P5/15 ; G01N33/00
摘要：
A NOx reducing catalyst can most efficiently remove both NOx and HC when concentrations of NOx and HC in exhaust have a specified relationship between them. For this purpose, an apparatus is adapted to control the concentrations of NOx and HC at an upstream of a catalyst to have a specified relationship. Sensors for detecting the concentration of NOx and HC are arranged at an upstream side of the catalyst. Additionally, a device for levelling a quantity of HC discharge is disposed to suppress variation thereof.
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