发明申请
WO2004104389A1 METHOD OF PURIFYING THE EXHAUST GAS OF A DIESEL ENGINE BY MEANS OF A DIESEL OXIDATION CATALYST
审中-公开
基本信息:
- 专利标题: METHOD OF PURIFYING THE EXHAUST GAS OF A DIESEL ENGINE BY MEANS OF A DIESEL OXIDATION CATALYST
- 专利标题(中):通过柴油氧化催化剂净化柴油发动机排气的方法
- 申请号:PCT/EP2004/004977 申请日:2004-05-10
- 公开(公告)号:WO2004104389A1 公开(公告)日:2004-12-02
- 发明人: GIESHOFF, Jürgen , LOX, Egbert , NEUHAUSEN, Ulrich , PFEIFER, Marcus , KREUZER, Thomas
- 申请人: UMICORE AG & CO. KG , GIESHOFF, Jürgen , LOX, Egbert , NEUHAUSEN, Ulrich , PFEIFER, Marcus , KREUZER, Thomas
- 申请人地址: Rodenbacher Chaussee 4, 63457 Hanau-Wolfgang DE
- 专利权人: UMICORE AG & CO. KG,GIESHOFF, Jürgen,LOX, Egbert,NEUHAUSEN, Ulrich,PFEIFER, Marcus,KREUZER, Thomas
- 当前专利权人: UMICORE AG & CO. KG,GIESHOFF, Jürgen,LOX, Egbert,NEUHAUSEN, Ulrich,PFEIFER, Marcus,KREUZER, Thomas
- 当前专利权人地址: Rodenbacher Chaussee 4, 63457 Hanau-Wolfgang DE
- 代理机构: VOSSIUS & PARTNER
- 优先权: DE103 20030522
- 主分类号: F01N3/20
- IPC分类号: F01N3/20
摘要:
The invention relates to a method and an apparatus for purifying the exhaust gas of a modern diesel engine (1) by means of a diesel oxidation catalyst (3). In the low load range, such diesel engines (1) have an exhaust gas temperature which can be below the light-off temperature of the oxidation catalyst (3). This results in unsatisfactory pollutant conversion during phases when the diesel engine (1) is operated at low loads and in fouling of the catalyst. The method of the invention solves the problem by, inter alia, increasing the catalyst temperature to at least a minimum temperature which ensures satisfactory pollutant conversion during phases when the engine (1) is operated at low load and a low exhaust gas temperature which is lower than the minimum temperature.
摘要(中):
本发明涉及一种通过柴油机氧化催化剂(3)净化现代柴油机(1)的废气的方法和装置。 在低负荷范围内,这种柴油发动机(1)的排气温度可低于氧化催化剂(3)的起燃温度。 这导致当柴油发动机(1)在低负载下操作并且催化剂结垢时,阶段期间污染物转化不令人满意。 本发明的方法尤其通过将催化剂温度提高到至少最低温度来解决这个问题,这确保了当发动机(1)在低负荷下运行时的阶段期间令人满意的污染物转化和较低的排气温度 比最低温度。
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 |