公开(公告)号：US20040159099A1

公开(公告)日：2004-08-19

申请号：US10776244

申请日：2004-02-12

申请人： DENSO CORPORATION

发明人： Tsukasa Kuboshima ,  Shinichiro Okugawa ,  Hironobu Baba

IPC分类号： F01N003/02 ,  G06G007/70

CPC分类号： F01N9/005 ,  F01N9/002 ,  F01N2330/06 ,  F01N2430/08 ,  F01N2430/085 ,  F01N2510/065 ,  F02D41/029 ,  F02D41/1448 ,  F02D41/187 ,  F02D41/2441 ,  F02D41/2474 ,  F02D41/28 ,  F02D41/3827 ,  F02D2041/1422 ,  F02D2200/0404 ,  F02D2200/0414 ,  F02D2200/0812 ,  Y02T10/47

摘要： An engine exhaust emission control device determines a differential pressure across a diesel particulate filter (DPF) to enable regeneration of the DPF at optimal timing. An ECU estimates the temperature of a differential pressure sensor provided for the DPF from the output of an intake air temperature sensor when the engine is not running, and determines an offset correction factor for correcting the sensor's offset error. The factor is set using the sensor output at this time as sensor's offset error, and stored in a memory. When detecting the differential pressure across the DPF, the temperature of the sensor at this time is estimated, and an offset correction factor that corresponds to this estimated temperature is selected. The sensor outputs are adjusted with this offset correction factor.

摘要翻译： 发动机废气排放控制装置确定柴油机微粒过滤器（DPF）两端的差压，以便能够在最佳定时再生DPF。 当发动机未运行时，ECU从进气温度传感器的输出估计为DPF设置的差压传感器的温度，并且确定用于校正传感器偏移误差的偏移校正因子。 此时，使用传感器输出设置传感器的偏移量，并存储在存储器中。 当检测到DPF两端的差压时，估计此时的传感器的温度，并且选择对应于该估计温度的偏移校正因子。 传感器输出通过该偏移校正因子进行调整。

公开(公告)号：US20040139733A1

公开(公告)日：2004-07-22

申请号：US10752518

申请日：2004-01-08

申请人： NISSAN MOTOR CO., LTD.

发明人： Toshimasa Koga ,  Junichi Kawashima ,  Makoto Otake ,  Naoya Tsutsumoto ,  Terunori Kondou ,  Takao Inoue

IPC分类号： F01N005/04 ,  F01N003/00 ,  F01N003/02 ,  F01N007/00

CPC分类号： F02D41/064 ,  F01N3/023 ,  F01N9/002 ,  F01N2430/00 ,  F01N2900/0421 ,  F01N2900/0422 ,  F02B37/00 ,  F02D41/029 ,  F02D41/045 ,  F02D41/105 ,  F02D2041/2051 ,  F02D2041/228 ,  F02D2200/0406 ,  F02D2200/0414 ,  F02D2200/503 ,  F02M26/05 ,  Y02T10/47

摘要： In regeneration apparatus and method for a particulate filter that collects a particulate in exhaust gas of an internal combustion engine, a timing at which an accumulated particulate is combusted to regenerate the particulate filter is determined and a control is performed for a combustion of the particulate, during the control for the combustion of the particulate, a temperature of the engine exhaust gas is raised to a first target temperature set at a temperature equal to or higher than a criterion temperature which provides a criterion of whether the particulate is combusted to regenerate the particulate filter when the engine falls in a first driving region, and the engine exhaust gas temperature is raised to a second target temperature set at a temperature lower than the criterion temperature when the engine falls in a second driving region different from the first driving region.

摘要翻译： 在收集内燃机的废气中的颗粒的微粒过滤器的再生装置和方法中，确定了累积的颗粒燃烧以再生颗粒过滤器的时刻，并且进行对颗粒的燃烧的控制， 在对颗粒燃烧的控制期间，将发动机废气的温度升高到设定在等于或高于标准温度的温度的第一目标温度，该标准温度提供了颗粒是否燃烧以再生颗粒的标准 当发动机落入第一驱动区域时，当发动机落在与第一驱动区域不同的第二驱动区域中时，发动机排气温度升高到设定在比标准温度低的温度的第二目标温度。

公开(公告)号：US20040098975A1

公开(公告)日：2004-05-27

申请号：US10301296

申请日：2002-11-21

发明人： Michiel J. van Nieuwstadt ,  Devesh Upadhyay ,  Michael Goebelbecker ,  William Charles Ruona

IPC分类号： F01N003/00 ,  F01N003/10 ,  F01N003/02

CPC分类号： F01N3/035 ,  B01D53/9431 ,  B01D53/9495 ,  F01N3/023 ,  F01N3/2066 ,  F01N13/009 ,  F01N2240/16 ,  F01N2570/10 ,  F01N2570/12 ,  F01N2570/14 ,  F01N2610/03 ,  F01N2610/08 ,  F01N2610/10 ,  F01N2610/107 ,  F02D41/1475 ,  Y02A50/2325 ,  Y02A50/2344 ,  Y02T10/24

摘要： A method and a system for improved reductant delivery to an exhaust gas aftertreatment device for a lean burn internal combustion engine exhaust is presented. The system includes a heated evaporator unit into which a mixture of reductant and air in injected, wherein the mixture is vaporized and introduced into the exhaust gas aftertreatment device. Introducing the reductant mixed with air into the heated evaporator unit prevents lacquering and soot deposits on the heated element housed inside the unit, and also speeds up the vaporization process due to better reductant distribution thus reducing system response delays and improving conversion efficiency of the exhaust gas aftertreatment device. The reductant delivery system is further improved by adding a catalyst to it, and by preventing the reductant and air mixture from coming into direct contact with the surface of the heating element.

摘要翻译： 提出了一种用于改进还原剂输送到贫燃燃烧内燃机排气的废气后处理装置的方法和系统。 该系统包括加热的蒸发器单元，其中注入的还原剂和空气的混合物，其中混合物蒸发并引入废气后处理装置。 将与空气混合的还原剂引入加热的蒸发器单元防止在容纳在单元内的加热元件上的涂漆和烟灰沉积，并且还由于更好的还原剂分布而加速蒸发过程，从而减少系统响应延迟并提高废气的转化效率 后处理装置。 通过向其中加入催化剂，并且通过防止还原剂和空气混合物与加热元件的表面直接接触来进一步改进还原剂递送系统。

公开(公告)号：US20040065079A1

公开(公告)日：2004-04-08

申请号：US10416156

申请日：2003-11-04

发明人： Guenter Stephani ,  Olaf Andersen ,  Gennadi Zikoridse ,  Ernstwendelin Bach ,  Frank Bretschneider

IPC分类号： F01N003/00 ,  F01N003/02

CPC分类号： F01N3/035 ,  B01J35/0006 ,  B01J35/06 ,  B01J35/08 ,  F01N3/0226 ,  F01N3/2832 ,  F01N2330/08 ,  F01N2330/12

摘要： The invention relates to a device and a method for the aftertreatment of exhaust gases from combustion engines, in particular from internal combustion engines. The device according to the invention and the method are intended to be of simple construction, should be inexpensive to produce and operate and should have less adverse effect on the flow conditions in the exhaust gas stream. To achieve this object, at least one region which is filled with beads is provided in the exhaust-gas stream, the beads preferably being hollow beads. The exhaust gas from the combustion engine is passed through this region, and it is possible to achieve particle agglomeration with simultaneous separation of these particles. In addition, further regions which are filled with metal fibers may follow the at least one region filled with beads, and the exhaust gas is additionally passed through these further regions.

摘要翻译： 本发明涉及一种用于后处理来自内燃发动机，特别是内燃机的废气的装置和方法。 根据本发明的装置和方法旨在是简单的结构，其制造和操作应该便宜，并且对排气流中的流动条件应具有较小的不利影响。 为了达到这个目的，在排气流中设置至少一个填充有珠粒的区域，珠粒优选为中空珠粒。 来自内燃机的废气通过该区域，并且可以实现颗粒聚集同时分离这些颗粒。 此外，填充有金属纤维的其他区域可以跟随填充有珠粒的至少一个区域，并且废气另外通过这些其它区域。

公开(公告)号：US20040065078A1

公开(公告)日：2004-04-08

申请号：US10381295

申请日：2003-11-14

发明人： Adolf Schafer-Sindlinger ,  Marcus Pfeifer ,  Ulrich Hackbarth ,  Wilfried Muller ,  Egbert Lox ,  Thomas Kreuzer ,  Roger Staab ,  Michael Hoffmann ,  Jurgen Gieshoff

IPC分类号： F01N003/00 ,  F01N003/02

CPC分类号： B01J23/6562 ,  B01D53/944 ,  B01D2255/102 ,  B01D2255/202 ,  B01D2255/204 ,  B01D2255/206 ,  B01D2255/50 ,  B01D2255/908 ,  B01D2257/502 ,  B01D2257/702 ,  B01J23/56 ,  F01N3/0222 ,  F01N3/0253 ,  F01N3/035 ,  F01N2430/085 ,  F01N2510/065 ,  F01N2570/12 ,  F01N2570/16 ,  F02B3/06 ,  F02D41/024 ,  F02D41/025 ,  F02D41/029 ,  F02D41/405 ,  Y02A50/2341 ,  Y02T10/26 ,  Y02T10/44

摘要： The invention provides a process for reducing the amounts of carbon monoxide, hydrocarbons and soot particles in the lean exhaust gas from an internal combustion engine using a particle filter, wherein the soot particles have a soot ignition temperature TZ and the particle filter is regenerated from time to time by raising the temperature of the particle filter to above the soot ignition temperature and burning the soot particles, wherein the temperature of the filter is increased to the temperature required to initiate soot ignition by burning additional fuel on the catalytic coating when the exhaust gas back pressure reaches a predetermined value. The process is characterised in that the particle filter is provided with a catalytic coating comprising a first group of components for reducing the ignition temperature of soot, said first group of components contains at least one oxygen storage component and at least one platinum group metal selected from the group consisting of platinum, palladium and rhodium. In a preferred embodiment of the process the catalytic coating further comprises a second group of components for oxidising carbon monoxide and hydrocarbons, said second group of components comprises at least a support material selected from the group consisting of aluminium oxide, silicon oxide, titanium oxide, zirconium oxide and zeolite and at least one platinum group metal selected from the group consisting of platinum, palladium and rhodium deposited on said support materials.

摘要翻译： 本发明提供了一种减少来自使用颗粒过滤器的内燃机的贫废气中的一氧化碳，碳氢化合物和烟灰颗粒的量的方法，其中烟灰颗粒具有烟灰着火温度TZ，并且颗粒过滤器从时间再生 通过将颗粒过滤器的温度升高到烟炱点燃温度以上并燃烧烟灰颗粒，其中过滤器的温度通过在催化涂层上燃烧附加燃料而增加到启动烟灰点火所需的温度 背压达到预定值。 该方法的特征在于，颗粒过滤器设置有包含用于降低烟灰的点燃温度的第一组成分的催化涂层，所述第一组组分含有至少一种储氧组分和至少一种选自以下的铂族金属： 由铂，钯和铑组成的组。 在该方法的优选实施方案中，催化涂层还包含用于氧化一氧化碳和烃的第二组组分，所述第二组组分至少包含选自氧化铝，氧化硅，氧化钛， 氧化锆和沸石以及选自沉积在所述载体材料上的铂，钯和铑中的至少一种铂族金属。

公开(公告)号：US20040055283A1

公开(公告)日：2004-03-25

申请号：US10372817

申请日：2003-02-26

申请人： Hitachi, Ltd.

发明人： Yoichi Iihoshi ,  Taizo Miyazaki

IPC分类号： F01N003/00 ,  F01N003/02 ,  F01N005/02

CPC分类号： F02P5/152 ,  F01P7/164 ,  F01P2025/44 ,  F01P2025/46 ,  F02B1/12 ,  F02D41/0255 ,  F02P5/1506 ,  Y02T10/26 ,  Y02T10/46

摘要： There is provided a control system for an internal combustion engine, which aim for early warm-up of catalyst and the engine in order to control a cooling loss and a heat radiation for cooling in such a way that the warm-up of the catalyst is carried out prior to the warm-up of the engine. That is, if the temperature of the catalyst is not greater than an activation temperature, there is carried out at least one of (1) retardation control of the ignition timing, (2) stopping control of a water pump for engine cooling water, (3) lowering control of the flow rate of the cooling water, but if the temperature of the catalyst is higher than the activation temperature, there is carried out at least one of control of the water pump in accordance with a temperature of the cooling water and control of retardation of the ignition timing, until the temperature of the cooling water reaches a warm-up temperature which is a normal operation temperature of the engine.

摘要翻译： 提供了一种用于内燃机的控制系统，其目的是为了早期预热催化剂和发动机，以便控制冷却损失和用于冷却的热辐射，使得催化剂的预热为 在发动机预热之前进行。 也就是说，如果催化剂的温度不大于活化温度，则进行（1）点火正时的延迟控制，（2）停止发动机冷却水的水泵的控制中的至少一个（ 3）降低冷却水流量的控制，但是如果催化剂的温度高于活化温度，则根据冷却水的温度和水冷却水的温度进行至少一个控制， 控制点火正时的延迟，直到冷却水的温度达到作为发动机的正常工作温度的预热温度。

公开(公告)号：US20030226350A1

公开(公告)日：2003-12-11

申请号：US10243105

申请日：2002-09-13

发明人： Ke Liu

IPC分类号： F01N003/00 ,  F01N003/02

CPC分类号： F02B33/34 ,  B01D53/9431 ,  F01N3/0814 ,  F01N3/0842 ,  F01N3/0878 ,  F01N3/2066 ,  F01N3/36 ,  F01N13/009 ,  F01N2240/12 ,  F01N2240/30 ,  F01N2610/02 ,  F01N2610/03 ,  F01N2610/04 ,  Y02T10/24

摘要： Inlet air (15) humidified in an air bubbling (or other) humidifier (35) that receives water from a tank (36) is sent to a hydrogen generator (27) along with vaporized (23) diesel fuel (22) to produce hydrogen and carbon monoxide (28) for either (a) mixing with the mainstream of exhaust (18) fed to a catalytic converter (30) or (b) regenerating a pair of NOx adsorption traps (38, 39), thereby reducing oxides of nitrogen (NOx), to provide system exhaust (32) which may have less than 0.40 grams/bhp/hr of NOx and 0.28 grams/bhp/hr of non-methane hydrocarbons. In other embodiments, unhumidified air mixed with fuel feeds a homogeneous non-catalytic partial oxidizer (27) to provide the required hydrogen and carbon monoxide.

摘要翻译： 在从罐（36）接收水的空气鼓泡（或其他）加湿器（35）中加湿的入口空气（15）与蒸发的（23）柴油（22）一起被送到氢发生器（27）以产生氢气 和（a）与供给到催化转化器（30）的废气（18）的主流混合的一氧化碳（28）或（b）再生一对NOx吸附阱（38,39），从而减少氮氧化物 （NOx），以提供系统排气（32），其可以具有小于0.40克/小时的NOx和0.28克/小时的非甲烷烃。 在其它实施方案中，与燃料混合的非湿空气供给均匀的非催化部分氧化剂（27）以提供所需的氢和一氧化碳。

公开(公告)号：US20030200745A1

公开(公告)日：2003-10-30

申请号：US10063454

申请日：2002-04-24

申请人： Ford Global Technologies, Inc.

发明人： Michiel J. van Nieuwstadt ,  Tom Alan Brewbaker

IPC分类号： F01N003/00 ,  F01N003/02

CPC分类号： F01N3/0253 ,  F01N13/009 ,  F01N13/0093 ,  F01N2250/02 ,  F01N2570/14 ,  F02B37/00 ,  F02D41/0002 ,  F02D41/029 ,  F02D2041/001 ,  F02D2200/0802 ,  Y02T10/42

摘要： A system and method are described for operating a diesel engine and particulate filter during self-sustained filter regeneration. In particular, a method is described for preventing over-temperature during filter regeneration by limiting excess oxygen supplied to the particulate filter.

摘要翻译： 描述了在自持续过滤器再生期间操作柴油发动机和微粒过滤器的系统和方法。 特别地，描述了一种通过限制供应给微粒过滤器的过量氧来防止过滤器再生过程中的过热的方法。

公开(公告)号：US20030192306A1

公开(公告)日：2003-10-16

申请号：US10405647

申请日：2003-04-03

申请人： TOYOTA JIDOSHA KABUSHIKI KAISHA

发明人： Koichiro Nakatani ,  Toshiaki Tanaka ,  Shinya Hirota ,  Takamitsu Asanuma ,  Koichi Kimura ,  Shunsuke Toshioka ,  Akira Mikami

IPC分类号： F01N003/00 ,  F01N003/10 ,  F01N003/02 ,  F01N005/02

CPC分类号： F01N3/2053 ,  B01D53/9454 ,  F01N3/031 ,  F01N3/035 ,  F01N3/0821 ,  F01N3/0842 ,  F01N3/2006 ,  F01N13/011 ,  F01N2330/06 ,  F01N2340/02 ,  F01N2410/00 ,  F01N2610/03 ,  F02B37/00 ,  Y02T10/22 ,  Y02T10/26

摘要： An internal combustion engine emission control apparatus includes split passages that divide exhaust gas discharged from an internal combustion engine into a plurality of streams. Emission control catalysts are provided that individually divide the exhaust gas in the split passages, and remove a component present in the exhaust gas at a high removal rate if a temperature of exhaust gas that inflows via the split passages satisfies a predetermined temperature condition. A controller changes proportions of the amounts of flow of the exhaust gas into the split passages so that the predetermined temperature condition is satisfied in at least one split passage of the split passages. Therefore, the emission control can be performed in a broad range of changing temperatures of the exhaust gas.

摘要翻译： 内燃机排放控制装置包括将从内燃机排出的废气分成多个流的分流通道。 提供排放控制催化剂，其分开分流通道中的废气，并且如果通过分流通道流入的废气的温度满足预定的温度条件，则以高的去除速率去除废气中存在的组分。 控制器将排气流量的比例改变为分割通道，使得在分流通道的至少一个分流通道中满足预定温度条件。 因此，排气控制可以在废气的变化温度的宽范围内进行。

公开(公告)号：US20030182930A1

公开(公告)日：2003-10-02

申请号：US10397051

申请日：2003-03-24

发明人： David Alexander Goulette ,  Joseph V. Bonadies

IPC分类号： F01N003/00 ,  F01N003/02

CPC分类号： F01N3/0231 ,  F01N2240/28

摘要： An integrated non-thermal plasma reactor-diesel particulate filter exhaust treatment apparatus 10 comprises a wall flow-type substrate 12 including a plurality of alternating high voltage 20 and ground electrode layers 22 and filter layers 24 disposed between said high voltage 20 and ground electrode layers 22. Channels 34 extending through the electrode layers 20, 22 are plugged to prevent exhaust flow. A portion of the exhaust channels 18 extending through the filter layers 23 are plugged 26 such that each channel 18 is plugged only at one end 14 or 16. During operation, a plasma is generated in the filter layers 24. An exhaust stream 28 is passed through the filter channels 18 and nitrogen oxides in the exhaust stream 28 are converted in the plasma primarily to NO2 while particulate matter in the exhaust stream 28 is captured in the porous channel walls 19. The filter 24 is continuously regenerated by NO2 formed in the plasma. NO byproduct from the filter regeneration is converted back into NO2 via plasma.

摘要翻译： 集成的非热等离子体 - 柴油颗粒过滤器排气处理装置10包括壁流式衬底12，其包括多个交替的高电压20和接地电极层22以及设置在所述高电压20和接地电极层之间的过滤层24 延伸穿过电极层20,22的通道34被堵塞以防止排气流动。 延伸穿过过滤层23的排气通道18的一部分被堵塞26，使得每个通道18仅在一端14或16处堵塞。在操作期间，在过滤层24中产生等离子体。排气流28通过 通过过滤器通道18和排气流28中的氮氧化物在等离子体中主要转化为NO 2，而废气流28中的颗粒物质被捕获在多孔通道壁19中。过滤器24由等离子体中形成的NO 2连续再生 。 过滤器再生的NO副产物通过等离子体转化回NO2。