基本信息:
- 专利标题： EXHAUST PURIFICATION DEVICE OF INTERNAL COMBUSTION ENGINE
- 申请号：EP13802845.1 申请日：2013-04-19
- 公开(公告)号：EP2987976B1 公开(公告)日：2018-05-23
- 发明人： NOGI, Yoshito
- 申请人： TOYOTA JIDOSHA KABUSHIKI KAISHA
- 申请人地址： 1, Toyota-cho, Toyota-shi, Aichi-ken, 471-8571 JP
- 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： 1, Toyota-cho, Toyota-shi, Aichi-ken, 471-8571 JP
- 代理机构： Kuhnen & Wacker Patent- und Rechtsanwaltsbüro PartG mbB
- 国际公布： WO2014171012 20141023
- 主分类号： F01N3/08
- IPC分类号： F01N3/08 ; F01N3/36 ; F01N3/20 ; F02D41/02 ; F02D41/40 ; F02D41/30
摘要：
In an internal combustion engine, an exhaust purification catalyst and a hydrocarbon feed valve are arranged in an exhaust passage. When the air-fuel ratio of the exhaust gas which flows into the exhaust purification catalyst should be made rich, rich control, which makes the air-fuel ratio of the exhaust gas which is exhausted from the combustion chamber rich, is performed. In order to prevent clogging of the hydrocarbon feed valve, clogging preventing injection which injects hydrocarbons from the hydrocarbon feed valve by an injection interval ”tCB is performed. The exhaust purification catalyst has an oxygen storage ability. At the initial period of rich control, clogging preventing injection is performed by a shorter injection interval ”tCS.
公开/授权文献:
- EP2987976B8 EXHAUST PURIFICATION SYSTEM FOR INTERNAL COMBUSTION ENGINE 公开/授权日：2018-08-08
IPC结构图谱:
| F | 机械工程；照明；加热；武器；爆破 |
| --F01 | 一般机器或发动机；一般的发动机装置；蒸汽机 |
| ----F01N | 一般机器或发动机的气流消音器或排气装置；内燃机的气流消音器或排气装置 |
| ------F01N3/00 | 排气或消音装置，它具有净化的、使变为无毒的或其他的排气处理装置 |
| --------F01N3/08 | .使变为无害 |