基本信息:
- 专利标题： ENGINE EXHAUST EMISSION CONTROL DEVICE
- 专利标题（中）：发动机排气控制装置
- 申请号：EP07744996.5 申请日：2007-06-11
- 公开(公告)号：EP2034148B1 公开(公告)日：2011-06-08
- 发明人： KATOU, Toshikazu , MATSUNAGA, Hideki , SAWAKI, Toshiki
- 申请人： Nissan Diesel Motor Co., Ltd. , Bosch Corporation
- 申请人地址： 1, Ooaza 1-chome Ageo-shi Saitama 362-8523 JP
- 专利权人： Nissan Diesel Motor Co., Ltd.,Bosch Corporation
- 当前专利权人： Nissan Diesel Motor Co., Ltd.,Bosch Corporation
- 当前专利权人地址： 1, Ooaza 1-chome Ageo-shi Saitama 362-8523 JP
- 代理机构： Liesegang, Eva
- 优先权： JP2006174859 20060626
- 国际公布： WO2008001598 20080103
- 主分类号： F01N11/00
- IPC分类号： F01N11/00 ; F01N3/20 ; B01D53/94
摘要：
An engine exhaust emission control device includes: an electric pump for inlet and pressure feed of a liquid reduction agent in a reduction agent tank; a flow rate control valve for controlling the flow rate of the liquid reduction agent fed under pressure; and an injection nozzle for injecting the liquid reduction agent having a controlled flow rate to the upstream of exhaust of NOx reduction catalyst. Upon engine start, air under a high pressure is fed back to a reduction agent supply system located at the upstream of the flow rate control valve and so as to judge whether the reduction agent supply system is clogged according to the pressure change. When the number of judgments that the reduction agent supply system is clogged exceeds a predetermined number, it is judged that a fatal clogging which cannot be easily removed has occurred in the reduction agent supply system.
摘要（中）：
一种发动机排气净化装置，其特征在于，具备：电动泵，其用于将还原剂箱内的液体还原剂导入并压送; 流量控制阀，用于控制在压力下供给的液体还原剂的流量; 以及用于将具有受控流量的液体还原剂喷射到NOx还原催化剂的排气上游的喷嘴。 发动机起动时，高压空气被返回到位于流量控制阀上游的还原剂供给系统，并根据压力变化判断还原剂供给系统是否堵塞。 当还原剂供给系统堵塞的判定次数超过规定次数时，判定在还原剂供给系统中发生了不易除去的致命堵塞。
公开/授权文献:
- EP2034148A1 ENGINE EXHAUST EMISSION CONTROL DEVICE 公开/授权日：2009-03-11
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 |
| ------F01N11/00 | 排气处理装置的监控或诊断装置 |