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1. 发明授权

US06497848B1 Catalytic trap with potassium component and method of using the same 有权
标题翻译：具有钾成分的催化捕集器及其使用方法
公开(公告)号：US06497848B1
公开(公告)日：2002-12-24
申请号：US09643457
申请日：2000-08-22
申请人： Michel Deeba , Uwe Dahle , Stefan Brandt , John K. Hochmuth
发明人： Michel Deeba , Uwe Dahle , Stefan Brandt , John K. Hochmuth
IPC分类号： B01D5394
CPC分类号： B01J35/0006 , B01D53/9413 , B01J23/58 , B01J23/63 , B01J37/0242 , B01J37/0244 , B01J37/0248 , F01N3/0807 , F01N3/0814 , F01N3/0842 , F01N3/0871 , F01N2330/00 , F01N2330/06 , F01N2610/03
摘要： A catalytic trap (10, 110) effective for conversion of NOx in an exhaust gas stream is inert to high-temperature reaction with basic oxygenated compounds of lithium, sodium or potassium. The catalytic trap may be substantially free of silica components and may include a catalytic trap material (20, 120) which contains a refractory metal oxide support, e.g., alumina, having dispersed thereon a catalytic component, such as a platinum group metal catalytic component, and a NOx sorbent comprised of one or more of the basic oxygenated compounds. The catalytic trap material is coated onto a suitable carrier member (12, 112), such as one made from stainless steel, titanium, alumina, titania, zirconia or silica-leached cordierite. A method of treating a NOx-containing gas stream involves maintaining the gas stream in alternating periods of (1) lean and (2) rich or stoichiometric conditions and contacting the gas stream with the catalytic trap under conditions in which NOx is adsorbed during periods of lean operation and released and reduced to nitrogen during periods of rich operation.
摘要翻译：对废气流中的NOx转化有效的催化捕集器（10,110）对与锂，钠或钾的碱性氧化化合物的高温反应是惰性的。催化捕集器可以基本上不含二氧化硅组分，并且可以包括催化捕集材料（20,120），催化捕集材料包含难熔金属氧化物载体，例如在其上分散有催化组分如铂族金属催化组分的氧化铝，和由一种或多种碱性氧化化合物组成的NOx吸附剂。将催化捕集材料涂覆到合适的载体构件（12,112）上，例如由不锈钢，钛，氧化铝，二氧化钛，氧化锆或二氧化硅浸提的堇青石制成的载体构件。一种处理含NO x的气流的方法包括将气流保持在（1）贫和（2）富集或化学计量条件的交替时段内，并且在气体流与催化捕集器接触的条件下，精益营运，丰富经营期间释放并减少氮。

2. 发明授权

US06375910B1 Multi-zoned catalytic trap and methods of making and using the same 有权
公开(公告)号：US06375910B1
公开(公告)日：2002-04-23
申请号：US09527910
申请日：2000-03-17
申请人： Michel Deeba , Uwe Dahle , Stefan Brandt
发明人： Michel Deeba , Uwe Dahle , Stefan Brandt
IPC分类号： B01D5394
CPC分类号： B01J23/63 , B01D53/9422 , B01D2255/1021 , B01D2255/1023 , B01D2255/1025 , B01D2255/2022 , B01D2255/2027 , B01D2255/2042 , B01D2255/9022 , B01D2255/903 , B01D2258/012 , B01J23/58 , B01J35/0006 , B01J35/04 , B01J37/0242 , B01J37/0244 , B01J37/0248 , F01N3/0807 , F01N3/0814 , F01N3/0842 , F01N3/0871 , F01N3/2828 , F01N2330/00 , F01N2330/06 , F01N2570/14 , F01N2610/03 , Y02A50/2344
摘要： A multi-zoned catalytic trap for conversion of NOx in an exhaust gas stream which emanates from an engine which is operated with periodic alternations between lean, and stoichiometric or rich, conditions. The catalytic trap comprises a first zone, a second zone and, optionally, one or more intermediate zones disposed between the first zone and the second zone. Each of the zones comprises a catalytic trap material coated on a refractory carrier member. In the first zone, the catalytic trap material comprises a refractory metal oxide support having dispersed thereon a palladium catalytic component in the amount of about 30 to about 300 g/ft3, a platinum catalytic component in the amount of 0 to about 100 g/ft3 and a rhodium catalytic component in the amount of 0 to about 10 g/ft3; and a NOx sorbent comprising one or more basic oxygenated compounds of one or more alkaline earth metals and optionally, one or more basic oxygenated compounds of one or more alkali metals. In the second zone, the catalytic trap material comprises a refractory metal oxide support having dispersed thereon a palladium catalytic component in the amount of 0 to about 50 g/ft3, a platinum catalytic component in the amount of about 10 to about 100 g/ft3 and a rhodium catalytic component in the amount of about 5 to about 20 g/ft3; and a NOx sorbent comprising one or more basic oxygenated compounds of one or metals selected from the group consisting of alkali metals and alkaline earth metals. In the optional zone(s), the catalytic trap material comprises a refractory metal oxide support having dispersed thereon a palladium catalytic component in the amount of about 25 to about 75 g/ft3, a platinum catalytic component in the amount of about 5 to about 30 g/ft3 and a rhodium catalytic component in the amount of 0 to about 10 g/ft3; and a NOx sorbent comprising one or more basic oxygenated compounds of one or metals selected from the group consisting of alkali metals and alkaline earth metals.

3. 发明授权

US5251405A Method for circumferential grinding of radially non-circular workpieces 失效
标题翻译：径向非圆形工件圆周磨削的方法
公开(公告)号：US5251405A
公开(公告)日：1993-10-12
申请号：US734964
申请日：1991-07-24
申请人： Siegbert Clauss , Peter Meusburger , Stefan Brandt , Roland Schmitz , Gerhard Walz
发明人： Siegbert Clauss , Peter Meusburger , Stefan Brandt , Roland Schmitz , Gerhard Walz
IPC分类号： B24B19/08 , B24B19/12 , B24B49/04
CPC分类号： B24B19/125 , B24B19/08
摘要： A method serves for circumferential grinding of radially non-circular workpieces, in particular for grinding cams (15) or polygons. The workpiece is rotated about a first second axis (13) extending at an angle, preferably of 90.degree., relative to the first axis (18). Starting out from a raw contour, the material at the surface of the workpiece (15) is removed along spiral-shaped paths of a point of action (20), by a plurality of steps corresponding each to one rotation of the workpiece, until intermediate contours and finally a finished contour are obtained, this being achieved by rotating and/or advancing the workpiece and the grinding wheel (11) in a controlled way, in response to data records. Every time an intermediate contour is reached, a new data record is called up for the next rotation of the workpiece. One measures continuously a predetermined absolute dimension (R.sub.Gist) of the workpiece and derives therefrom the existing deviation (.increment.R.sub.G) from a given setpoint value (R.sub.GSOll). The deviation (.increment.R.sub.G) is compared (40) with threshold values and a predetermined number of steps is skipped when the actual values fall below the threshold values.
摘要翻译：一种方法用于径向非圆形工件的周向磨削，特别是用于研磨凸轮（15）或多边形。工件围绕相对于第一轴线（18）以一定角度（优选90°）延伸的第一第二轴线（13）旋转。从原始轮廓开始，沿着作用点（20）的螺旋形路径通过对应于工件的一个旋转的多个步骤将工件（15）表面处的材料移除，直到中间通过响应于数据记录，以受控的方式旋转和/或推进工件和砂轮（11）来获得轮廓并最终获得完成的轮廓。每到达到一个中间轮廓，就会调用一个新的数据记录来进行下一个工件旋转。一个连续测量工件的预定绝对尺寸（RGist），并从其中导出与给定设定值（RGSO11）的现有偏差（INCREMENT RG）。将偏差（INCREMENT RG）与阈值进行比较（40），并且当实际值低于阈值时跳过预定数量的步骤。

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