发明公开
EP2891777A1 EXHAUST PURIFICATION DEVICE FOR SPARK IGNITION INTERNAL COMBUSTION ENGINE
失效 - 权利终止
基本信息:
- 专利标题： EXHAUST PURIFICATION DEVICE FOR SPARK IGNITION INTERNAL COMBUSTION ENGINE
- 专利标题（中）：ÜUNG UNG UNG UNG UNG UNG UNG UNG UNG UNG UNG UNG UNG UNG UNG UNG UNG UNG UNG UNG UNG UNG UNG UNG
- 申请号：EP12883497.5 申请日：2012-08-28
- 公开(公告)号：EP2891777A1 公开(公告)日：2015-07-08
- 发明人： INOUE, Mikio , YOSHIDA, Kohei , BISAIJI, Yuki , SAKURAI, Kenji , NAKAMURA, Kohki
- 申请人： Toyota Jidosha Kabushiki Kaisha
- 申请人地址： 1 Toyota-cho Toyota-shi, Aichi 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 471-8571 JP
- 代理机构： Smith, Samuel Leonard
- 国际公布： WO2014033836 20140306
- 主分类号： F01N3/20
- IPC分类号： F01N3/20 ; F01N3/06 ; F02D41/02
摘要：
A three-way catalyst (20) having an oxygen storage function and an exhaust purification catalyst (22) are arranged in the exhaust passage of an internal combustion engine. During medium-load operation of the engine the degree of lean of the air-fuel ratio in the combustion chamber (5) is increased so as to increase the oxygen storage amount of the three-way catalyst (20) to the maximum oxygen storage amount, and the air-fuel ratio in the combustion chamber (5) even after the oxygen storage amount of the three-way catalyst (20) has reached the maximum oxygen storage amount is maintained at lean, after which the air-fuel ratio is returned to rich, and at this time, as the amount of poisoning of a noble metal catalyst when the air-fuel ratio in the combustion chamber (5) is rich increases, the amount of time for which the air-fuel ratio in the combustion chamber (5) is maintained at lean is increased.
摘要（中）：
具有储氧功能的三元催化剂（20）和排气净化催化剂（22）布置在内燃机的排气通道中。 在发动机的中负荷运转时，燃烧室（5）中的空燃比的倾斜度增加，以将三元催化剂（20）的储氧量增加到最大氧气储存量 ，并且即使在三元催化剂（20）的储氧量达到最大氧气储存量之后，燃烧室（5）中的空燃比仍保持在稀薄，此后返回空燃比 此时，当燃烧室（5）中的空燃比变浓时贵金属催化剂的中毒量增加，燃烧室内的空燃比的时间 （5）保持在瘦，增加。
公开/授权文献:
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 |
| ----------F01N3/10 | ..对排气的有害成分进行加热转化和催化转化 |
| ------------F01N3/18 | ...以操作方法为特点的；调节 |
| --------------F01N3/20 | ....专门适用于催化转化的 |