公开(公告)号：US20090151323A1

公开(公告)日：2009-06-18

申请号：US12302540

申请日：2008-05-25

申请人： Christopher Severin ,  Juergen Schnitzler ,  Andreas Wiartalla

发明人： Christopher Severin ,  Juergen Schnitzler ,  Andreas Wiartalla

IPC分类号： F01N3/035

CPC分类号： F01N3/0814 ,  F01N3/023 ,  F01N3/0821 ,  F01N3/0828 ,  F01N3/0842 ,  F01N3/0864 ,  F01N3/0871 ,  F01N3/0885 ,  F01N11/002 ,  F01N11/007 ,  F01N13/0097 ,  F01N2560/02 ,  F02D41/027 ,  F02D41/0295 ,  F02D41/1408 ,  F02D2200/0802 ,  F02D2200/0814 ,  Y02T10/47

摘要： The invention relates to a method for operating a motor vehicle exhaust-gas aftertreatment system (1), in which oxygen is fed to and removed from the oxygen tank (8) of an exhaust-gas aftertreatment component (7). According to the invention, the oxygen quantity in the oxygen tank (8) is determined and a rich-lean cycle is influenced in accordance with the determined oxygen quantity. The invention also relates to a motor vehicle exhaust-gas aftertreatment system (1), which permits a temperature regulation of the oxygen tank (8) and/or an uninterrupted desulphation during the transition between a rich operation and a lean operation.

摘要翻译： 本发明涉及一种用于操作机动车辆排气后处理系统（1）的方法，其中向废气后处理部件（7）的氧气罐（8）供给氧气并将其从其移除。 根据本发明，确定氧气罐（8）中的氧气量，并根据确定的氧气量影响富稀循环。 本发明还涉及一种机动车排气后处理系统（1），其允许氧气罐（8）的温度调节和/或在富操作和稀薄操作之间的过渡期间的不间断脱硫。

公开(公告)号：US20090071125A1

公开(公告)日：2009-03-19

申请号：US11596987

申请日：2006-04-12

申请人： Kohei Yoshida

发明人： Kohei Yoshida

IPC分类号： F01N9/00

CPC分类号： F01N3/0885 ,  B01D53/94 ,  F01N3/0814 ,  F01N3/0821 ,  F01N3/0842 ,  F01N3/085 ,  F01N3/0871 ,  F01N11/00 ,  F01N13/009 ,  F01N2550/03 ,  F01N2560/026 ,  F01N2560/06 ,  F01N2570/04 ,  F01N2610/03 ,  F02B37/00 ,  F02D41/024 ,  F02D41/0285 ,  F02D41/146 ,  F02D41/1463 ,  F02D2200/0818 ,  Y02C20/10 ,  Y02T10/24 ,  Y02T10/26 ,  Y02T10/47

摘要： In an internal combustion engine, an SOx trap catalyst (11) able to trap SOx contained in exhaust gas is arranged in an engine exhaust passage upstream of an NOx storing catalyst (12). When whether the SOx trap catalyst (11) has deteriorated should be judged, the SOx trap catalyst (11) is raised in temperature in the state with the air-fuel ratio of the exhaust gas flowing into the SOx trap catalyst (11) maintained lean. At this time, the concentration of NOx released from the SOx trap catalyst (11) is detected by the NOx concentration sensor (24). When the NOx concentration is a set value or less, the catalyst is judged to have deteriorated.

摘要翻译： 在内燃机中，在NOx吸留催化剂（12）的上游侧的发动机排气通路内配置能够捕集废气中的SOx的SO X捕集催化剂（11）。 应当判断是否劣化了SOx捕集催化剂（11），SO x捕集催化剂（11）在流入SOx捕集催化剂（11）的废气的空燃比维持在稀薄状态的状态下升高 。 此时，由NOx浓度传感器（24）检测从SO X捕集催化剂（11）释放的NOx的浓度。 当NOx浓度为设定值以下时，判定催化剂劣化。

公开(公告)号：US20090007545A1

公开(公告)日：2009-01-08

申请号：US11816280

申请日：2006-04-06

申请人： Kazuaki Kameda

发明人： Kazuaki Kameda

IPC分类号： F01N9/00

CPC分类号： F02D41/027 ,  B01D53/9431 ,  B01D2251/20 ,  F01N3/035 ,  F01N3/0814 ,  F01N3/0821 ,  F01N3/0842 ,  F01N3/0871 ,  F01N3/106 ,  F01N11/002 ,  F01N13/009 ,  F01N13/0097 ,  F01N2260/024 ,  F01N2510/06 ,  F01N2560/06 ,  F01N2560/08 ,  F01N2560/14 ,  F01N2610/03 ,  F01N2610/1493 ,  F01N2900/08 ,  F01N2900/1811 ,  F02D2041/0265 ,  Y02T10/47

摘要： An addition valve is provided upstream of an exhaust gas purifying catalyst (NOx catalyst) in an exhaust pipe and in the vicinity of a water jacket in a cylinder head, in addition to a fuel injection valve injecting fuel for combustion in a combustion chamber. The addition valve injects a reducing agent in an addition amount in accordance with an operation state of an engine. Using an engine coolant temperature correlated to a temperature of the addition valve, a target addition interval of the addition valve is made shorter with increase in the engine coolant temperature, so that the addition amount is increased (step 130). The temperature of the exhaust gas purifying catalyst (catalyst bed temperature) is raised as a result of increase in the addition amount. Here, a target injection amount of fuel, representing one of parameters other than the addition amount that affect the catalyst bed temperature, is restricted by using an injection amount upper limit, such that the catalyst bed temperature does not exceed an upper limit of an allowable range (steps 240, 250).

摘要翻译： 除了在燃烧室内喷射用于燃烧的燃料的燃料喷射阀之外，还在排气管中的排气管和气缸盖中的水套附近的排气净化催化剂（NOx催化剂）的上游设置加法阀。 添加阀根据发动机的运转状态，以添加量注入还原剂。 使用与加法​​阀的温度相关的发动机冷却剂温度，随着发动机冷却剂温度的增加使加法阀的目标相加间隔变短，从而增加添加量（步骤130）。 废气净化催化剂的温度（催化剂床温度）由于添加量的增加而升高。 这里，通过使用喷射量上限来限制代表影响催化剂床温度的添加量以外的参数之一的燃料目标喷射量，使得催化剂床温度不超过允许的上限 范围（步骤240,250）。

公开(公告)号：US20080307772A1

公开(公告)日：2008-12-18

申请号：US12119794

申请日：2008-05-13

申请人： Jun Kawamura ,  Masakuni Yokoyama

发明人： Jun Kawamura ,  Masakuni Yokoyama

IPC分类号： F01N9/00

CPC分类号： F01N3/021 ,  F01N3/0821 ,  F01N2570/10 ,  F01N2570/14 ,  F02D35/023 ,  F02D35/028 ,  F02D41/0275 ,  F02D41/1466 ,  F02D41/2422 ,  F02D41/405 ,  F02D2200/0612 ,  F02D2200/0812 ,  F02D2200/703 ,  Y02A50/2344 ,  Y02T10/20

摘要： When it is determined that fuel in use is low-cetane fuel or a present location point is at a high altitude, a map of rich combustion, exhaust gas fuel addition or a post-injection is rewritten on the occasion of reduction of NOx to inhibit a misfire. Also, deterioration of fuel consumption due to regeneration of a diesel particulate filter is inhibited by suppressing excessive discharge of smoke due to the rich combustion. Thus, an exhaust purification device of an internal combustion engine capable of achieving both of inhibition of the deterioration in the fuel consumption due to the regeneration of the diesel particulate filter and inhibition of torque shock accompanying the misfire during the rich combustion for the NOx reduction is provided.

摘要翻译： 当确定使用中的燃料是低十六烷值燃料或当前位置点处于高空时，在减少NOx以抑制浓缩燃烧，废气燃料添加或后喷射的图中被重写 失火 此外，通过抑制由于丰富的燃烧引起的烟雾的过度排放，可以抑制由于柴油机微粒过滤器的再生引起的燃料消耗的劣化。 因此，能够实现由于柴油微粒过滤器的再生而导致的燃料消耗的劣化抑制和伴随着用于NOx还原的浓燃烧期间的失火的扭矩冲击的抑制的内燃机的排气净化装置， 提供。

公开(公告)号：US07451593B2

公开(公告)日：2008-11-18

申请号：US10554931

申请日：2004-06-22

申请人： Daiji Nagaoka ,  Masashi Gabe ,  Takayuki Sakamoto

发明人： Daiji Nagaoka ,  Masashi Gabe ,  Takayuki Sakamoto

IPC分类号： F01N3/00

CPC分类号： B01D53/9495 ,  B01D53/9431 ,  F01N3/035 ,  F01N3/0814 ,  F01N3/0821 ,  F01N3/0842 ,  F01N13/0097 ,  F02B29/0425 ,  F02B37/00 ,  F02D41/0275 ,  F02D41/029 ,  F02D41/1446 ,  F02D2200/0812 ,  F02M26/05 ,  F02M26/23 ,  F02M26/47

摘要： An exhaust gas cleaning method capable of maintaining an optimum NOx purification ratio in the continuously regenerative range of DPF in an exhaust gas cleaning system (1) having an NOx purification function and a PM purification function combined with each other and the exhaust gas cleaning system (1). In the exhaust gas cleaning system (1), NOx purification by an NOx occlusion/reduction type catalyst (42) and PM purification by a continuous regeneration type DPF (41) are preformed for exhaust gas from an internal combustion engine. When the temperature (Tent) of the exhaust gas flowing in the DPF (41b) exceeds the self-burning temperature (Tent0) of PM and the differential pressure increasing rate (dP) of a differential pressure across the DPF (41b) exceeds a specified determination value (dP0), at least either of a control to reduce the frequency of enriching the exhaust gas and a control to reduce the degree of richness is performed in a catalyst regenerative control for regenerating the NOx occlusion/reduction type catalyst (42).

摘要翻译： 一种废气净化方法，其能够在具有NOx净化功能和PM净化功能的废气净化系统（1）中将DPF的连续再生范围内的NOx净化率保持在最佳状态，并且将废气净化系统 1）。 在排气净化系统（1）中，通过NOx吸留还原型催化剂（42）进行NOx净化，通过连续再生型DPF（41）进行PM净化，从内燃机排出气体。 当在DPF（41b）中流动的废气的温度（Tent）超过PM的自燃温度（Tent 0）和DPF（41b）两端的压差的压差增加率（dP）时， 超过规定的判定值（dP 0）时，在用于再生NOx吸留还原型催化剂的催化剂再生控制中进行至少任一个降低浓缩排气的频率的控制和降低浓度的控制 （42）。

公开(公告)号：US20080241032A1

公开(公告)日：2008-10-02

申请号：US11837365

申请日：2007-08-10

申请人： Bilal Zuberi

发明人： Bilal Zuberi

IPC分类号： B01D53/56 ,  F01N3/10

CPC分类号： B01D53/944 ,  B01D2255/1021 ,  B01D2255/1025 ,  B01D2255/20723 ,  B01D2255/50 ,  B01D2255/902 ,  B01D2255/91 ,  B01D2255/9205 ,  B01D2257/404 ,  B01D2258/012 ,  B01D2258/014 ,  F01N3/0222 ,  F01N3/0253 ,  F01N3/0821 ,  F01N3/0842 ,  F01N3/0871 ,  F01N2510/06 ,  F01N2510/0684 ,  Y02T10/24

摘要： A NOx trapping filter is provided for use in emission control systems, for example, on the exhaust gas from an internal combustion engine. The NOx trapping filter has a substrate constructed using bonded fiber structures, which cooperate to form a highly uniform open cell network, as well as to provide a uniform arrangement of pores. The substrate typically is provided as a wall-flow honeycomb structure, and in one example, is manufactured using an extrusion process. In this way, the substrate has many channel walls, each having an inlet surface and an outlet surface. The inlet surface has a uniform arrangement of pores that form a soot capture zone, where soot and other particulate matter is captured from an exhaust gas. A NOx adsorber material is disposed in the filter to trap NOx during lean operation of the engine. A NOx conversion catalyst is also disposed inside the channel wall, where NOx and excess hydrocarbons in the exhaust gas are reacted to less harmful substances when the engine system is operated in a rich condition. Because of the uniform pore structure and open cell arrangement inside the channel wall, the filter is capable of being heavily loaded with catalyst, adsorber, while avoiding undue increase in backpressure to the internal combustion engine.

摘要翻译： 提供了用于排放控制系统中的NOx捕集过滤器，例如在来自内燃机的废气上。 NOx捕集过滤器具有使用结合的纤维结构构造的基底，其协作以形成高度均匀的开孔细胞网络，以及提供孔的均匀排列。 衬底通常被提供为壁流式蜂窝结构，并且在一个示例中，使用挤出工艺制造。 以这种方式，衬底具有许多通道壁，每个具有入口表面和出口表面。 入口表面具有形成烟灰捕获区的孔的均匀布置，其中从废气捕获烟灰和其它颗粒物质。 过滤器中设置有NOx吸附材料，以在发动机的稀薄操作期间捕集NOx。 NOx传递催化剂也设置在通道壁内部，当发动机系统在富状态下运行时，排气中的NOx和过量的碳氢化合物与较少的有害物质反应。 由于通道壁内均匀的孔结构和开孔方式，过滤器能够重载负载催化剂，吸附器，同时避免过度增加内燃机的背压。

公开(公告)号：US07412823B2

公开(公告)日：2008-08-19

申请号：US11455553

申请日：2006-06-19

申请人： Johannes Walter Reuter ,  James Edward McCarthy, Jr.

发明人： Johannes Walter Reuter ,  James Edward McCarthy, Jr.

IPC分类号： F01N3/00

CPC分类号： F01N3/0814 ,  F01N3/0821 ,  F01N3/0842 ,  F01N3/0885 ,  F01N3/106 ,  F01N3/2033 ,  F01N13/0097 ,  F01N2240/25 ,  F01N2240/30 ,  F01N2250/12 ,  F01N2560/06 ,  F01N2610/03 ,  F01N2610/146 ,  F02D41/028 ,  F02D41/1463 ,  F02D2041/0265 ,  F02D2200/0802 ,  F02D2200/0804 ,  Y02T10/24 ,  Y02T10/26

摘要： A fuel reformer is configured in an exhaust line upstream of a LNT. To desulfate the LNT, over a first period, fuel is provided to the exhaust to make the exhaust rich. While producing reformate, the reformer is allowed to heat to a relatively large extent, typically at least about 75° C. Before the reformer overheats, the provision of fuel is reduced and typically stopped entirely for a second period, over which the reformer cools. The heating and cooling periods are repeated to complete the desulfation process. The reduced efficiency of operating the reformer over an extended temperature range is more than compensated for by the benefits of extending the rich pulse.

摘要翻译： 燃料重整器配置在LNT上游的排气管中。 为了使LNT脱硫，在第一阶段中，向排气口提供燃料以使排气富集。 在重整产品生产过程中，重整炉允许加热到一个较大的程度，典型地至少约为75℃。在重整器过热之前，燃料的供应减少，并且通常完全停止第二个时间，重整炉冷却。 重复加热和冷却时间以完成脱硫过程。 在扩展的温度范围内降低重整器运行效率的降低，通过延长富脉冲的好处来补偿。

公开(公告)号：US07404933B2

公开(公告)日：2008-07-29

申请号：US10297729

申请日：2001-06-06

申请人： Martyn Vincent Twigg

发明人： Martyn Vincent Twigg

IPC分类号： B01D50/00

CPC分类号： F01N3/0842 ,  B01D53/9431 ,  B01D53/9495 ,  F01N3/0231 ,  F01N3/035 ,  F01N3/0814 ,  F01N3/0821 ,  F01N3/0871 ,  F01N13/0097 ,  F01N2570/14 ,  Y02A50/2344 ,  Y02T10/24

摘要： An exhaust system for a diesel engine, which engine being operable in a plurality of modes including an idling mode, wherein the engine emits a relatively cool exhaust gas, and a running mode, wherein the engine emits a relatively hot exhaust gas, includes a solid NOx absorbent, whereby NOx is absorbed by the NOx absorbent during the idling mode and is desorbed and passed to atmosphere during the running mode and/or during acceleration from idling to running as the temperature of the exhaust gas increases, wherein during all modes the engine runs lean and the exhaust gas composition is lambda>1.

摘要翻译： 一种用于柴油发动机的排气系统，该发动机可以以多种模式操作，包括空转模式，其中发动机发出相对较冷的废气，以及运行模式，其中发动机发射相对较热的废气，包括固体 NOx吸收剂，其中NO x在空转模式期间被NOx吸收剂吸收，并且在运行模式期间和/或在从排气到空运行的加速期间被解吸并传递到大气中，随着废气温度升高，其中在所有模式期间，发动机 运行贫气，排气组成为λ> 1。

公开(公告)号：US20080155972A1

公开(公告)日：2008-07-03

申请号：US11646514

申请日：2006-12-28

申请人： James Joshua Driscoll ,  Praveen Shivshankar Chavannavar ,  Cho Y. Liang ,  Thomas Edward Paulson ,  Michael L. Woods

发明人： James Joshua Driscoll ,  Praveen Shivshankar Chavannavar ,  Cho Y. Liang ,  Thomas Edward Paulson ,  Michael L. Woods

IPC分类号： F01N3/00

CPC分类号： F01N3/023 ,  F01N3/035 ,  F01N3/0814 ,  F01N3/0821 ,  F01N3/206 ,  F01N9/002 ,  F01N13/009 ,  F02B37/013 ,  F02M26/06 ,  Y02T10/24 ,  Y02T10/47

摘要： An exhaust gas treatment system of an internal combustion engine includes a selective catalytic reduction catalyst fluidly connected to the internal combustion engine, an oxidation catalyst fluidly connected upstream of the selective catalytic reduction catalyst, and a particulate filter fluidly connected upstream of the selective catalytic reduction catalyst. The exhaust gas treatment system further includes a recirculation line configured to direct a portion of an exhaust flow of the internal combustion engine toward an inlet of the engine.

摘要翻译： 内燃机的废气处理系统包括流体连接到内燃机的选择性催化还原催化剂，流体连接在选择性催化还原催化剂上游的氧化催化剂和流体连接在选择性催化还原催化剂上游的颗粒过滤器 。 废气处理系统还包括再循环管线，该再循环管线构造成将内燃机的排气流的一部分朝向发动机的入口引导。

公开(公告)号：US20080148715A1

公开(公告)日：2008-06-26

申请号：US11883443

申请日：2006-01-11

申请人： Kazuo Osumi ,  Yousuke Tanaka ,  Osamu Sakamoto ,  Junichi Oonuma ,  Kazuhiro Enoki

发明人： Kazuo Osumi ,  Yousuke Tanaka ,  Osamu Sakamoto ,  Junichi Oonuma ,  Kazuhiro Enoki

IPC分类号： F01N3/10

CPC分类号： F01N3/0821 ,  B01D53/9409 ,  B01D2255/908 ,  F01N3/0222 ,  F01N3/023 ,  F01N3/035 ,  F01N3/0842 ,  F01N3/0864 ,  F01N3/2006 ,  F01N9/002 ,  F01N13/009 ,  F01N2510/0684 ,  F01N2560/025 ,  F01N2560/06 ,  F01N2570/16 ,  F01N2900/1402 ,  F01N2900/1404 ,  F01N2900/1624 ,  F02D41/0275 ,  F02D41/029 ,  F02D41/1446 ,  Y02T10/26

摘要： In an exhaust-gas after-treatment device (10,10A) having an oxygen storage capacitor substance which releases oxygen when the exhaust-gas is rich in air-fuel ratio and storages oxygen and heats up by itself when the exhaust-gas is lean in air-fuel ratio, the air-fuel ratio for the exhaust-gas flowing into the exhaust-gas after-treatment device (10,10A) is regulated so as to alternately come into a rich condition (R) and a lean condition (L) when the temperature (Tg) of the exhaust-gas is not higher than a given temperature (Tc) and when the exhaust-gas after-treatment device (10,10A) is not in the condition of being regenerated. Thus, when an exhaust-gas after-treatment device (10,10A) having a deNOx catalyst and a DPF is not in the condition of the regeneration of deNOx catalyst, DPF regeneration, or the like, the temperature of the exhaust-gas after-treatment device (10,10A) is raised by utilizing the self-heating function of the oxygen storage capacitor substance during oxygen absorption. As a result, the purification rate for NOx and PM at the time when the temperature of the exhaust-gas is low is improved.

摘要翻译： 在具有储气电容器物质的废气后处理装置（10,10A）中，当排气富含空燃比时，能够释放氧气，并且当废气为 流入废气后处理装置（10,10A）的废气的空燃比被调整为交替地变成浓稠状态（R）和稀薄的 当废气的温度（Tg）不高于给定温度（Tc）时，以及废气后处理装置（10,10A）不处于再生状态时的条件（L）。 因此，当具有脱硝催化剂和DPF的废气后处理装置（10,10A）不处于脱硝催化剂再生，DPF再生等状态时，废气温度 在吸氧期间利用储氧电容器物质的自加热功能来提高后处理装置（10,10A）。 结果，排气温度低时NOx和PM的净化率提高。