System intended to reduce the amount of NOx in the exhaust gases of a motor vehicle
    1.
    发明授权
    System intended to reduce the amount of NOx in the exhaust gases of a motor vehicle 有权
    旨在减少机动车辆废气中的NOx的量的系统

    公开(公告)号:US08728422B2

    公开(公告)日:2014-05-20

    申请号:US13825001

    申请日:2011-10-20

    Abstract: System to reduce the amount of NOx in exhaust gases of a vehicle. The system includes a storage space 1 containing an agent, a SCR catalytic converter 5, an injection module 6c to inject the agent upstream of the converter, a heat exchanger 2 containing a porous matrix, a shutter or injector 11 to control the flow rate of the agent to the exchanger, a valve 12 between the storage space and exchanger, to transfer thermal energy to gases during the starting period. The shutter or injector controls the flow of agent into the exchanger during the starting period to raise its temperature, and is closed when gases have reached a certain temperature. The valve regulates exchanger pressure during a period at operating temperature and conveys the agent to storage space when the exchanger pressure is higher than storage space pressure.

    Abstract translation: 用于减少车​​辆废气中的NOx的量的系统。 该系统包括一个储存空间1,其中包含一个试剂,一个SCR催化转换器5,一个注入模块6c,用于将该试剂注入转化器的上游,一个含有多孔基质的热交换器2,一个快门或喷射器11,以控制流量 交换器的代理,存储空间和交换器之间的阀12,以在开始期间将热能转移到气体。 快门或喷射器在启动期间控制试剂进入交换器的流量以升高其温度,并且当气体达到一定温度时闭合。 阀在工作温度期间调节换热器压力,并且当换热器压力高于储存空间压力时,将试剂输送到储存空间。

    SYSTEM INTENDED TO REDUCE THE AMOUNT OF NOX IN THE EXHAUST GASES OF A MOTOR VEHICLE

    公开(公告)号:US20130287656A1

    公开(公告)日:2013-10-31

    申请号:US13825001

    申请日:2011-10-20

    Abstract: The invention relates to a system intended to reduce the amount of NOx in the exhaust gases of a motor vehicle. The system comprises a storage space (1) containing a reducing agent; an SCR (selective catalytic reduction) catalytic converter (5) for treating the exhaust gases laden with reducing agent, and an injection module (6c) designed to inject the reducing agent from the storage space (1) into the exhaust gases of the motor vehicle upstream of the SCR catalytic converter (5). The system further comprises: at least one heat exchanger (2) connected to the storage space (1) and containing a porous matrix intended to absorb the reducing agent originating from the storage space (1); a valve or an injector (11) downstream of the storage space (1) and upstream of the exchanger (2) and designed to control the addition of reducing agent to the exchanger (2), and a valve (12) positioned between the storage space (1) and the exchanger (2). This is designed to transfer thermal energy to the exhaust gases of the motor vehicle upstream of the SCR catalytic converter (5) during a first period known as the starting period following the starting of said vehicle. The valve or the injector (11) is designed to control the rate of flow of reducing agent into the exchanger (2) during said starting period so that the absorption of the reducing agent by the porous matrix of the exchanger (2) raises the temperature thereof. The valve or the injector (11) is also designed then to be closed during a period known as the period at operating temperature when the motor vehicle is running as soon as the exhaust gases have reached a certain temperature. The valve (12) is designed firstly to regulate the pressure inside the exchanger (2) during said period at operating temperature and secondly to convey the reducing agent contained in the exchanger (2) to the storage space (1) when the pressure inside the exchanger (2) is higher than the pressure inside the storage space (1).

    Combustion control by particle filter regeneration
    5.
    发明授权
    Combustion control by particle filter regeneration 失效
    通过颗粒过滤器再生进行燃烧控制

    公开(公告)号:US06655132B2

    公开(公告)日:2003-12-02

    申请号:US09959126

    申请日:2001-12-19

    Abstract: Process and device for controlling the regeneration of an element filtering oxidable particles carried along by a gaseous stream, by periodic combustion of these particles, such as, for example, the carbon-containing particles carried along in the exhaust gas of a thermal engine (3), retained in an exhaust silencer (1). In an application to a thermal engine, the process comprises detecting the variation, measured by detectors (4, 5), in the oxygen content of the gaseous stream between at least a first point located upstream, in relation to the direction of flow, from filtering element (1) receiving the stream and at least a second point located downstream from the first one, resulting from a reaction of combustion of the particles accumulated in the filtering element, initiated by a management element (6) acting for example on the running of engine (3), which allows the latter to adjust with precision the stage of regeneration of the filtering element and therefore to limit overconsumption as far as possible.

    Abstract translation: 通过这些颗粒的周期性燃烧,例如在热发动机(3)的排气中携带的含碳颗粒,用于控制过滤由气流携带的可氧化颗粒的元件的再生的方法和装置 ),保留在排气消音器(1)中。在对热引擎的应用中,该过程包括检测在至少第一点之间的气流的氧含量中由检测器(4,5)测量的变化 从接收流的过滤元件(1)和位于第一个流的下游的至少第二点的上游流向上游,这是由积聚在过滤元件中的颗粒的燃烧反应引起的, 管理元件(6)例如用于发动机(3)的运行,这使得后者可以精确地调节过滤元件的再生阶段,并因此限制过度消耗 离子尽可能。

    Method And Device For Regenerating A Particle Filter Integrated Into And Exhaust Line Of An Internal Combustion Engine
    6.
    发明申请
    Method And Device For Regenerating A Particle Filter Integrated Into And Exhaust Line Of An Internal Combustion Engine 失效
    集成在内燃机和排气管内的颗粒过滤器的再生方法和装置

    公开(公告)号:US20070271902A1

    公开(公告)日:2007-11-29

    申请号:US10580432

    申请日:2004-11-23

    Abstract: The invention relates to a method for regenerating a particle filter (10) integrated into an exhaust line (12) of an internal combustion engine (34), wherein the exhaust gas flows into the filter via an inflow surface (16) and exit the filter via an outflow surface (18). According to the invention, the internal temperature of at least two regions of the filter (10) is monitored during regeneration of the filter; the oxygen content of the exhaust gas is reduced if at least one of the monitored temperatures rises above a critical temperature; the oxygen content of the exhaust gas is increased in order to continue regeneration if all of the monitored temperatures are below said critical temperature.

    Abstract translation: 本发明涉及一种用于再生整合到内燃机(34)的排气管(12)中的颗粒过滤器(10)的方法,其中废气经由流入表面(16)流入过滤器并离开过滤器 经由流出表面(18)。 根据本发明,在过滤器再生期间监测过滤器(10)的至少两个区域的内部温度; 如果所监测的温度中的至少一个升高到临界温度以上,则废气的氧含量降低; 如果所有监测的温度都低于所述临界温度,则排气的氧含量增加以便继续再生。

    Process and device for local and controlled regeneration of a particle filter
    7.
    发明授权
    Process and device for local and controlled regeneration of a particle filter 失效
    颗粒过滤器的局部和可控再生的工艺和装置

    公开(公告)号:US06176896B1

    公开(公告)日:2001-01-23

    申请号:US09301602

    申请日:1999-04-29

    Abstract: A process and device for local permeability evaluation and local regeneration of a particle filter consisting of several juxtaposed zones through which a flow of gas to be scrubbed is passed include the steps of and apparatus for measuring the temperature of the flow upstream from the filter, measuring the temperature in at least one of the zones forming the filter, evaluating the thermal inertia of at least one of the zones by relative measurement of the temperature or of the local resistance to the temperature upstream from the filter, deducing from this the local permeability of the filter and locally regenerating the filter.

    Abstract translation: 一种用于局部渗透性评估和局部再生的颗粒过滤器的过程和装置,该颗粒过滤器由几个平行的区域组成,通过该区域通过待擦洗的气体流,包括用于测量过滤器上游流动温度的步骤和装置, 形成过滤器的至少一个区域中的温度,通过相对测量温度或对过滤器上游温度的局部阻力来评估至少一个区域的热惯性,从此推断出该区域的局部渗透率 过滤器和本地再生过滤器。

    Exhaust gas filtering process and unit with modulable heating
    8.
    发明授权
    Exhaust gas filtering process and unit with modulable heating 失效
    废气过滤过程和可加热的单元

    公开(公告)号:US6090172A

    公开(公告)日:2000-07-18

    申请号:US968126

    申请日:1997-11-12

    Abstract: The present invention is a filtering unit providing after-treatment of the gases emited in the exhaust of Diesel engines, comprising a filtering set which includes at least one filtering element (11, 12, 13); at least one resistive element (3) which heats a zone (121, 122, 123) of one of the at least one filtering element; at least one detection device which determines fouling of the filtering set (1); a control (5), responsive to the at least one detection device, which controls independently each of the resistive elements, according to the fouling of the filtering set and electrical power available to the at least one resistive element. The resistive elements (3) can be each wound around a zone of a filtering element. The invention further relates to the associated process.

    Abstract translation: 本发明是提供柴油发动机排气中产生的气体的后处理的过滤单元,包括至少一个过滤元件(11,12,13)的过滤组件。 至少一个电阻元件(3),其加热所述至少一个过滤元件中的一个的区域(121,122,123); 至少一个检测装置,其确定过滤装置(1)的结垢; 控制器(5),响应于至少一个检测装置,其独立地控制每个电阻元件,根据滤波器组的结垢和对于至少一个电阻元件可用的电力。 电阻元件(3)可以各自缠绕在过滤元件的区域周围。 本发明还涉及相关联的方法。

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