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    Procedure and device for controlling an exhaust gas purification system
    12.
    发明授权
    Procedure and device for controlling an exhaust gas purification system 有权
    用于控制废气净化系统的方法和装置

    公开(公告)号：US08646253B2

    公开(公告)日：2014-02-11

    申请号：US12940395

    申请日：2010-11-05

    申请人： Markus Gloeckle ,  Tobias Pfister

    发明人： Markus Gloeckle ,  Tobias Pfister

    IPC分类号： F01N3/00

    CPC分类号： F01N11/00 ,  F01N3/08 ,  F01N3/0835 ,  F01N3/101 ,  F01N3/103 ,  F01N13/009 ,  Y02T10/22 ,  Y02T10/47

    摘要： A procedure for controlling an exhaust gas purification system of a combustion engine, consisting of one or several catalytic converters for converting and/or storing at least one exhaust gas component of an exhaust gas of the combustion engine at least one of the catalytic converters is construed as oxidization catalytic converter. With the aid of the adsorption capability of at least partially uncombusted hydrocarbons of one of the catalytic converters a diagnosing forecast about the NO oxidization of the catalytic converters is derived, whereby the at least partially uncombusted hydrocarbons are introduced into the exhaust gas duct at least partially in front of the catalytic converter. With the procedure and the device for implementing the procedure the NO oxidization capability of the involved catalytic converters can be evaluated in the range of extended on-board diagnosis requirements to provide “feed-gas” for subsequent exhaust gas after-treatment systems.

    摘要翻译： 用于控制内燃机的排气净化系统的过程被解释为由一个或多个催化转化器组成，用于转化和/或存储至少一个催化转化器的内燃机的废气的至少一个排气组分 作为氧化催化转化器。 借助于催化转化器之一的至少部分未燃烧的碳氢化合物的吸附能力，得出催化转化器的NO氧化的诊断预测，由此至少部分未燃烧的烃至少部分地被引入废气管道 在催化转化器前面。 通过实施该程序的方法和装置，可以在延长的车载诊断要求的范围内评估所涉及的催化转化器的NO氧化能力，为后续废气后处理系统提供“进料气”。

    Process for reducing agent control in an exhaust gas aftertreatment system
    14.
    发明申请
    Process for reducing agent control in an exhaust gas aftertreatment system 失效
    废气后处理系统中还原剂控制的方法

    公开(公告)号：US20070110653A1

    公开(公告)日：2007-05-17

    申请号：US11599899

    申请日：2006-11-14

    申请人： Markus Gloeckle

    发明人： Markus Gloeckle

    IPC分类号： B01D53/56

    CPC分类号： B01D53/9409 ,  B01D53/9495 ,  F01N3/2073 ,  F01N3/208 ,  F01N2240/25 ,  F01N2240/28 ,  F01N2240/30 ,  F01N2610/02 ,  F01N2610/08 ,  Y02C20/10 ,  Y02T10/24

    摘要： The invention concerns a process for reducing agent control in an exhaust gas aftertreatment system of a combustion engine with an exhaust gas pipe in which in the direction of flow of the exhaust gas there is an SCR catalyzer, whereby a reducing agent generating system has an NOx and CO/H2 generating unit, an oxidation catalyzer, and a combined NOx storage/ammonia generating unit in the standard gas path of the reducing agent generating system, and ammonia is introduced as a reducing agent for the reduction of nitric oxides before the SCR catalyzer of the reducing agent generating system, whereby precursor materials for generation of ammonia are directed at least temporarily to the NOx and CO/H2 generating unit through a fuel feed and an air feed, whereby a CO/H2 reducing agent stream is temporally modulated during a rich phase with λ 30%). It can thereby be achieved that the secondary emissions from the reducing agent generating system can be lowered. Furthermore, even at high ammonia yields, the overdosing of H2/CO and thus ultimately the added fuel consumption can be limited.

    摘要翻译： 本发明涉及一种具有排气管的内燃机的废气后处理系统中的还原剂控制方法，其中在排气的流动方向上存在SCR催化剂，由此还原剂产生系统具有NO CO 2 H 2 CO 2 H 2 CO 2 H 2 CO 2 H 2 CO 2 H 2 CO 2 H 2 CO 2 H 2 CO 2 H 2 CO 2 H 2 CO 2 H 2 CO 2 H 2 CO 2 H 2 引入还原剂生成系统和氨作为用于在还原剂生成系统的SCR催化剂之前还原一氧化氮的还原剂，由此产生氨的前体材料至少暂时指向NO x CO 2 H 2 CO 2 H 2 CO 2 H 2 CO 2 H 2 CO 2 H 2 CO 2 H 2 CO 2 H 2 CO 2 H 2 CO 2 H 2 CO 2 H 2 CO 2 H 2 CO 2 H 2 CO 2 H 2 CO 2 H 2 CO 其中λ<1作为NO x SO 2储存/氨生成的还原相 单位，其中CO / H 2 H 2浓度主要保持恒定在高水平（> 30％）。 由此可以实现降低来自还原剂生成系统的二次排放。 此外，即使在高氨收率下，也可限制H 2 O / CO过量量，从而最终增加燃料消耗。