发明名称 |
EXHAUST GAS PURIFIER FOR INTERNAL-COMBUSTION ENGINE |
摘要 |
<p>In an internal combustion engine, an NO X selective reduction catalyst (15) is arranged in an engine exhaust passage, an aqueous urea solution is fed to the NO X selective reduction catalyst (15) and the ammonia generated from the aqueous urea solution is made to be adsorbed at the NO X selective reduction catalyst (15), and the adsorbed ammonia is used to selectively reduce NO X . At the time the engine is stopped, when the ammonia adsorption amount at the NO X selective reduction catalyst (15) is smaller than a predetermined target amount of adsorption, the urea necessary for making the ammonia adsorption amount at the NO X selective reduction catalyst (15) the target amount of adsorption is fed to the NO X selective reduction catalyst (15) at the time the engine is stopped.</p> |
申请公布号 |
EP2256311(A1) |
申请公布日期 |
2010.12.01 |
申请号 |
EP20090712488 |
申请日期 |
2009.02.18 |
申请人 |
TOYOTA JIDOSHA KABUSHIKI KAISHA |
发明人 |
AOYAMA, TARO;TANAI, YUTAKA |
分类号 |
F01N3/08;B01D53/86;B01D53/94;F01N3/20;F01N3/22;F01N3/24;F01N3/32;F02D41/02;F02D41/04 |
主分类号 |
F01N3/08 |
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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