公开(公告)号：US06685900B2

公开(公告)日：2004-02-03

申请号：US09789718

申请日：2001-02-22

申请人： Rainer Domesle ,  Harald Klein ,  Thomas Kreuzer ,  Egbert Lox

发明人： Rainer Domesle ,  Harald Klein ,  Thomas Kreuzer ,  Egbert Lox

IPC分类号： B01J802

CPC分类号： B01J29/068 ,  B01D53/944 ,  B01D53/945 ,  B01J21/12 ,  B01J23/42 ,  B01J37/0246 ,  B01J37/0248 ,  F01N3/022 ,  F01N3/2803 ,  F01N2370/04 ,  Y02A50/2324 ,  Y02A50/2341 ,  Y02T10/22

摘要： A catalyst for purifying the exhaust gases of diesel engines, which catalyst contains at least one zeolite and, additionally, at least one of the support oxides aluminum oxide, silicon dioxide, titanium dioxide and aluminum silicate and at least one of the noble metals platinum, palladium, rhodium and iridium. In this catalyst the atoms of the noble metals have a mean oxidation number of less than +2.5, on average more than 3 metal ligands and less than 3 oxygen ligands and are present on the zeolites and support oxides in the form of crystallites having a mean particle size of from 1 to 6 nm.

摘要翻译： 一种用于净化柴油发动机废气的催化剂，该催化剂含有至少一种沸石，另外，至少一种载体氧化物氧化铝，二氧化硅，二氧化钛和硅酸铝以及至少一种贵金属铂， 钯，铑和铱。 在该催化剂中，贵金属的原子具有平均氧化数小于+2.5，平均多于3个金属配体和少于3个氧配体，并且存在于沸石和以平均形式存在的微晶形式的载体氧化物上 粒度为1〜6nm。

公开(公告)号：US06684628B2

公开(公告)日：2004-02-03

申请号：US09832332

申请日：2001-04-11

申请人： Ulrich Göbel ,  Lutz Marc Ruwisch ,  Egbert Lox ,  Thomas Kreuzer

发明人： Ulrich Göbel ,  Lutz Marc Ruwisch ,  Egbert Lox ,  Thomas Kreuzer

IPC分类号： F01N300

CPC分类号： F01N3/0864 ,  F01N3/0807 ,  F01N3/0842 ,  F01N11/00 ,  F01N2550/03 ,  F02D2041/147 ,  Y02T10/47

摘要： The present invention provides processes for checking the operability of a nitrogen oxide storage catalyst during operation of a lean burn engine. The processes of the present invention utilize a nitrogen oxide storage material, a catalytically active component and optionally an oxygen storage material. During lean burn engine operation, damage to the catalytically active components is detected if the nitrogen oxide storage capacity in the kinetically controlled temperature range is lowered and damage to the storage material is detected if the nitrogen oxide storage capacity is lowered in the thermodynamically controlled temperature range.

摘要翻译： 本发明提供了在稀燃发动机操作期间检查氮氧化物存储催化剂的可操作性的方法。 本发明的方法利用氮氧化物储存材料，催化活性组分和任选的储氧材料。 在稀燃发动机运转中，如果在动力学控制的温度范围内的氮氧化物存储容量降低并且如果在热力学控制的温度范围内降低了氮氧化物存储容量，则检测到对储存材料的损坏，则检测到对催化活性组分的损伤 。

公开(公告)号：US06596056B2

公开(公告)日：2003-07-22

申请号：US09745176

申请日：2000-12-22

申请人： Rainer Domesle ,  Thomas Kreuzer ,  Egbert Lox

发明人： Rainer Domesle ,  Thomas Kreuzer ,  Egbert Lox

IPC分类号： B05D722

CPC分类号： C04B41/009 ,  B01J35/04 ,  B01J37/0217 ,  C04B41/52 ,  C04B2111/0081 ,  C04B2111/00844 ,  F01N3/2828 ,  F01N2260/18 ,  Y10S55/30 ,  Y10T428/24149 ,  C04B41/502 ,  C04B41/4539 ,  C04B41/457 ,  C04B41/50 ,  C04B38/0006

摘要： A process for coating, with a suspension, a ceramic honeycomb body which has a cylindrical shape with two flat end-faces and one jacket, and through which channels parallel to the axis, formed by channel walls, run from one flat end-face to the other, the honeycomb body being coated by suitable processes. The honeycomb body is partially wetted and then coated.

摘要翻译： 一种用悬浮液涂覆陶瓷蜂窝体的方法，陶瓷蜂窝体具有两个平坦的端面和一个护套的圆柱形形状，并且通过通道壁形成的平行于轴线的通道通过该通道从一个平坦的端面延伸到 另一方面，蜂窝体被适当的工艺涂覆。 蜂窝体被部分润湿然后涂覆。

公开(公告)号：US06516611B1

公开(公告)日：2003-02-11

申请号：US09576069

申请日：2000-05-22

申请人： Adolf Schäfer-Sindlinger ,  Wolfgang Strehlau ,  Egbert Lox ,  Thomas Kreuzer ,  Ulrich Göbel

发明人： Adolf Schäfer-Sindlinger ,  Wolfgang Strehlau ,  Egbert Lox ,  Thomas Kreuzer ,  Ulrich Göbel

IPC分类号： F01N300

CPC分类号： F01N3/035 ,  B01D53/94 ,  B01D53/9431 ,  B01J35/04 ,  F01N3/0231 ,  F01N13/009 ,  F01N13/0093 ,  F01N13/0097 ,  Y02C20/10

摘要： A process for removing soot from the exhaust gas of a diesel engine by oxidizing the nitrogen monoxide present in the exhaust gas to nitrogen dioxide, separating the soot from the exhaust gas stream and oxidizing the soot using the nitrogen dioxide produced. The process is performed in at least two consecutive process stages and the soot is separated from the exhaust gas stream with an efficiency W between 0.05 and 0.95 in each process stage, wherein each process stage can be assigned a transmission for soot in accordance with T=1−W and the total transmission of the process for soot is given as the product of the transmissions of all the process stages.

摘要翻译： 通过将废气中存在的一氧化氮氧化成二氧化氮，将烟灰与排气流分离，并利用所生成的二氧化氮氧化烟炱，从柴油发动机废气中除去烟灰的方法。 该过程在至少两个连续的处理阶段中进行，并且在每个处理阶段中烟炱与废气流分离，效率W为0.05至0.95，其中每个处理阶段可根据T = 1-W，并且烟灰过程的总传输给出为所有过程阶段的传输的乘积。

公开(公告)号：US06338831B1

公开(公告)日：2002-01-15

申请号：US09276903

申请日：1999-03-26

申请人： Wolfgang Strehlau ,  Ulrich Göbel ,  Rainer Domesle ,  Egbert Lox ,  Thomas Kreuzer

发明人： Wolfgang Strehlau ,  Ulrich Göbel ,  Rainer Domesle ,  Egbert Lox ,  Thomas Kreuzer

IPC分类号： B01D5350

CPC分类号： B01J20/08 ,  B01D53/508 ,  B01D53/94 ,  B01J20/041 ,  B01J20/28042 ,  B01J20/28057 ,  B01J20/3078 ,  B01J20/3204 ,  B01J20/3236

摘要： A sulfur oxide storage material contains a magnesium-aluminum spinel (MgO.Al2O3) and can be used as a so-called “sulfur trap” to remove sulfur oxides from oxygen-containing exhaust gases of industrial processes. In particular, it can be used for the catalytic purification of exhaust gas from internal-combustion engines to remove the sulfur oxides from the exhaust gas in order to protect the exhaust gas catalysts from sulfur poisoning. The material displays a molar ratio of magnesium oxide to aluminum oxide in the range of over 1.1:1, and the magnesium oxide present in stoichiometric excess is homogeneously distributed in a highly disperse form in the storage material.

摘要翻译： 硫氧化物储存材料含有镁 - 铝尖晶石（MgO·Al 2 O 3），并且可以用作所谓的“硫阱”，以从工业过程的含氧废气中除去硫氧化物。 特别地，其可以用于从内燃机排出的废气的催化净化，以从废气中除去硫氧化物，以保护废气催化剂免受硫中毒。 该材料显示氧化铝与氧化铝的摩尔比在1.1:1以上，以化学计量过量存在的氧化镁以高分散形式均匀地分布在储存材料中。

公开(公告)号：US06334986B1

公开(公告)日：2002-01-01

申请号：US09757581

申请日：2001-01-11

申请人： Jürgen Gieshoff ,  Hans Van Den Tillaart ,  Thomas Kreuzer ,  Egbert Lox ,  Jürgen Lang

发明人： Jürgen Gieshoff ,  Hans Van Den Tillaart ,  Thomas Kreuzer ,  Egbert Lox ,  Jürgen Lang

IPC分类号： B01D5358

摘要： The invention relates to a process for the selective catalytic reduction of the nitrogen oxides contained in a lean exhaust gas from internal combustion engines by reducing the nitrogen oxides by means of ammonia on a catalyst. The process is characterized in that, in addition to the lean exhaust gas, a rich gas stream is produced that is treated in an electrical gas discharge plasma in order to form the ammonia required for the reduction.

公开(公告)号：US06220022B1

公开(公告)日：2001-04-24

申请号：US09180112

申请日：1999-08-04

申请人： Wilfried Müller ,  Jürgen Leyrer ,  Rainer Domesle ,  Klaus Ostgathe ,  Egbert Lox ,  Thomas Kreuzer

发明人： Wilfried Müller ,  Jürgen Leyrer ,  Rainer Domesle ,  Klaus Ostgathe ,  Egbert Lox ,  Thomas Kreuzer

IPC分类号： F01N310

CPC分类号： B01D53/9454 ,  Y02T10/22

摘要： A catalyst system for the treatment of exhaust gases from a diesel engine includes a first and a second catalyst reducing catalyst arranged in series in an exhaust gas treatment system. The first catalyst is located near the engine in a region of the exhaust gas treatment system in which the exhaust gas temperature reaches temperatures of more than 200° C. under full engine load. The second catalyst is located further from the engine in a region of the exhaust gas treatment system in which the exhaust gas temperature reaches a maximum of 500° C. under full engine load. The maximum nitrogen oxides reduction in the first catalyst takes place at a lower temperature than the maximum nitrogen oxides reduction in the second catalyst.

摘要翻译： 用于处理来自柴油发动机的废气的催化剂系统包括在废气处理系统中串联布置的第一和第二催化剂还原催化剂。 第一催化剂位于排气处理系统的区域内的发动机附近，其中在全发动机负荷下，废气温度达到超过200℃的温度。 第二催化剂在排气处理系统的一个区域内比发动机更远，其中在全发动机负荷下废气温度达到最大值500℃。 第一催化剂中的最大氮氧化物还原在比第二催化剂中的最大氮氧化物还原更低的温度下进行。

公开(公告)号：US6089015A

公开(公告)日：2000-07-18

申请号：US078415

申请日：1998-05-14

申请人： Wolfgang Strehlau ,  Egbert Lox ,  Thomas Kreuzer ,  Jurgen Hohne

发明人： Wolfgang Strehlau ,  Egbert Lox ,  Thomas Kreuzer ,  Jurgen Hohne

IPC分类号： F01N3/08 ,  B01D53/86 ,  B01D53/94 ,  F01N3/28 ,  F01N3/00

CPC分类号： B01D53/9459 ,  B01D53/9418 ,  B01D53/9422 ,  B01D2251/204 ,  B01D2251/208 ,  B01D2255/1021 ,  B01D2255/1028 ,  B01D2255/2042 ,  B01D2255/2063 ,  B01D2255/20738 ,  B01D2255/20761 ,  B01D2255/50 ,  B01D2258/012 ,  B01D53/945 ,  B01D53/9477 ,  Y02T10/22 ,  Y02T10/24

摘要： A method of purifying the lean exhaust gas of lean mix engines or diesel engines. The exhaust gas is first contacted with a permanent reduction catalyst and subsequently contacted with a nitrogen oxide storage catalyst. This procedure yields a uniformly good conversion of pollutants of the exhaust gases under differing operating conditions both as regards the air ratios and the exhaust gas temperatures.

摘要翻译： 一种净化稀混合发动机或柴油发动机的贫废气的方法。 废气首先与永久性还原催化剂接触，然后与氮氧化物储存催化剂接触。 该方法在空气比和废气温度下，在不同的操作条件下均衡地得到排气污染物的均匀转化。

公开(公告)号：US5934073A

公开(公告)日：1999-08-10

申请号：US78597

申请日：1998-05-14

申请人： Jurgen Gieshoff ,  Egbert Lox ,  Thomas Kreuzer

发明人： Jurgen Gieshoff ,  Egbert Lox ,  Thomas Kreuzer

IPC分类号： F01N3/20 ,  F01N3/24 ,  F01N3/28 ,  F01N5/02 ,  F02G5/02 ,  F01N3/02

CPC分类号： F01N3/2046 ,  F01N3/2006 ,  F01N3/2033 ,  F01N3/2889 ,  F01N5/02 ,  F01N2240/02 ,  F01N2610/03 ,  Y02T10/16 ,  Y02T10/26

摘要： An auxiliary heating system for a motor vehicle with an internal combustion engine. The auxiliary heating includes an emission control catalyst and a heat exchanger, integrated in the converter housing in front of and/or behind the catalyst, which provides the reaction heat released by the catalyst and the remaining heat of the exhaust gas to the heating of the passenger compartment. The heat generation may be increased by the injection of a fuel/air mixture before the catalyst and by using the catalyst as a catalytic burner and can be adapted to the heat requirements. The auxiliary heating of the invention prevents possible thermal damage of the catalyst during operation as a catalytic burner without many regulating elements by cooling the catalyst radiation. For this purpose, the heat exchanger is provided with an exchange surface which can freely exchange radiation with the radiant surface of the catalytic element.

摘要翻译： 一种具有内燃机的汽车辅助加热系统。 辅助加热包括排放控制催化剂和热交换器，其集成在催化剂前面和/或后面的转化器壳体中，其提供由催化剂释放的反应热和排气的剩余热量加热到 乘客舱。 可以通过在催化剂之前注入燃料/空气混合物并且通过使用催化剂作为催化燃烧器并且可以适应于热需求来增加发热。 本发明的辅助加热在作为催化燃烧器的操作期间可防止催化剂的热损伤，而不需要许多调节元件来冷却催化剂辐射。 为此，热交换器设置有可以与催化元件的辐射表面自由交换辐射的交换表面。

公开(公告)号：US06145303A

公开(公告)日：2000-11-14

申请号：US276131

申请日：1999-03-25

申请人： Wolfgang Strehlau ,  Ulrich Gobel ,  Egbert Lox ,  Wilfried Muller ,  Rainer Domesle

发明人： Wolfgang Strehlau ,  Ulrich Gobel ,  Egbert Lox ,  Wilfried Muller ,  Rainer Domesle

IPC分类号： B01D53/86 ,  B01D53/94 ,  B01J21/16 ,  F01N3/08 ,  F01N3/10 ,  F01N3/20 ,  F01N3/24 ,  F01N3/28 ,  F01N9/00 ,  F01N13/02 ,  F02D41/14 ,  F01N3/00 ,  B01D47/00

CPC分类号： B01D53/9422 ,  B01D53/949 ,  F01N13/009 ,  F01N3/0814 ,  F01N3/0842 ,  F01N3/085 ,  F01N3/0871 ,  B01D2255/102 ,  B01D2255/202 ,  B01D2255/204 ,  B01D2255/2061 ,  B01D2255/2063 ,  B01D2255/91 ,  F01N2340/02 ,  Y02T10/22

摘要： A process is disclosed for operating an exhaust gas treatment unit for an internal combustion engine which is operated with lean normalized air/fuel ratios over most of the operating period. The exhaust gas treatment unit contains a nitrogen oxides storage catalyst with an activity window .DELTA.T.sub.NOX for the storage of nitrogen oxides at normalized air/fuel ratios of greater than 1 and release of the nitrogen oxides at normalized air/fuel ratios of less than or equal to 1 and a sulfur trap, located upstream of the nitrogen oxides storage catalyst, with a sulfur desorption temperature T.sub.S,DeSOx above which the sulfates stored on the sulfur trap are decomposed at normalized air/fuel ratios of less than or equal to 1. The nitrogen oxides contained in the exhaust gas are stored on the nitrogen oxides storage catalyst and the sulfur oxides are stored on the sulfur trap at normalized air/fuel ratios greater than 1 and exhaust gas temperatures T.sub.K within the activity window T.sub.NOX, wherein at the same time the exhaust gas temperature just upstream of the sulfur trap is lower than its sulfur desorption temperature T.sub.S,DeSOx. By cyclic lowering of the normalized air/fuel ratio in the exhaust gas to less than 1 the stored nitrogen oxides are released again from the storage catalyst. After each predetermined number N.sub.1 of nitrogen oxides storage cycles, sulfur is removed from the sulfur trap. This takes place by raising the exhaust gas temperature just upstream of the sulfur trap to above its sulfur desorption temperature T.sub.S,DeSOx and also lowering the normalized air/fuel ratio in the exhaust gas to less than 1.

摘要翻译： 公开了一种用于操作用于内燃机的排气处理单元的方法，该内燃机在大部分操作周期内以精简的归一化空气/燃料比操作。 废气处理单元包含具有活性窗口DELTA TNOX的氮氧化物存储催化剂，用于在标准化的空气/燃料比大于1时储存氮氧化物，并且在标准化的空气/燃料比小于或等于 至1和位于氮氧化物储存催化剂上游的硫捕集器，具有硫解吸温度TS，DeSOx，其上储存在硫阱上的硫酸盐在标准化的空气/燃料比小于或等于1时分解。 废气中含有的氮氧化物被储存在氮氧化物储存催化剂上，硫氧化物以规定的大于1的空气/燃料比和废气温度TK存储在活性窗口TNOX内，其中同时 硫阱的上游排气温度低于其脱硫温度TS，DeSOx。 通过将排气中的归一化空气/燃料比循环降低到小于1，储存的氮氧化物再次从储存催化剂释放。 在氮氧化物存储循环的每个预定数量的N1之后，从硫阱中除去硫。 这通过将硫捕集器正好上游的废气温度提高到高于其硫解吸温度TS，DeSOx并且将排气中的归一化空气/燃料比降至小于1来进行。