公开(公告)号：US06470676B2

公开(公告)日：2002-10-29

申请号：US09909388

申请日：2001-07-19

Applicant: Winfried Dölling ,  Lothar Hofmann

Inventor： Winfried Dölling ,  Lothar Hofmann

IPC: F01N300

CPC classification number: F01N3/2066 ,  F01N2570/14 ,  F01N2570/18 ,  F01N2610/02 ,  Y02A50/2344 ,  Y02T10/24

Abstract: A method is provided for the catalytic conversion of nitrogen oxides contained in the exhaust gas of an internal combustion engine. A reducing agent is added in a controlled manner upstream of a denitrification catalyst, as seen in exhaust gas flow direction, and in dependence on a nitrogen oxide concentration. The reducing agent is added in a superstoichiometric amount in relation to the nitrogen oxide content if an operating parameter and/or a value derived from the operating parameter falls below or exceeds a threshold value. The addition of the reducing agent is then terminated or continued in a substoichiometric manner. The invention provides a measure for obtaining an extremely high average nitrogen oxide conversion, especially under varying operating conditions of the internal combustion engine.

Abstract translation: 提供了用于催化转化内燃机排气中所含的氮氧化物的方法。 在脱氮催化剂的上游以可控的方式添加还原剂，如在废气流动方向上所看到的，并且依赖于氮氧化物浓度。 如果操作参数和/或从操作参数导出的值低于或超过阈值，则相对于氮氧化物含量以超化学计量的量加入还原剂。 然后以亚化学计量方式终止或继续加入还原剂。 本发明提供了获得极高平均氮氧化物转化率的措施，特别是在内燃机的变化的操作条件下。

公开(公告)号：US06209313B1

公开(公告)日：2001-04-03

申请号：US09188723

申请日：1998-11-09

Applicant: Gerhard Wissler ,  Günther Pajonk ,  Lothar Hofmann ,  Manfred Weigl

Inventor： Gerhard Wissler ,  Günther Pajonk ,  Lothar Hofmann ,  Manfred Weigl

IPC: F01N300

CPC classification number: F01N3/2066 ,  F01N2430/00 ,  F01N2610/02 ,  F02D21/08 ,  F02D31/008 ,  F02D41/0235 ,  F02D41/40 ,  F02D2250/36 ,  Y02T10/24 ,  Y02T10/44

Abstract: Excessive NOx emission in a diesel internal combustion engine with SCR exhaust gas treatment is detected by a control unit. The excessive NOx emission value is determined from the catalytic-converter efficiency calculated for the metering of the reducing agent. In response, measures are taken, such as delayed start of the fuel injection, deactivation of a coasting cutoff, reducing an exhaust gas recirculation rate and/or increasing the idling speed. As a result, the NOx content in the untreated exhaust gas drops, the catalytic-converter temperature increases more quickly after a cold start, and the NOx emission is reduced.

Abstract translation: 具有SCR排气处理的柴油内燃机中的NOx排放过多由控制单元检测。 根据对还原剂的计量计算的催化转化器效率来确定过量的NOx排放值。 作为响应，采取措施，例如延迟启动燃料喷射，停止滑行切断，降低废气再循环速率和/或增加怠速。 结果，未处理废气中的NOx含量下降，催化转化器温度在冷启动后升高得更快，NOx排放减少。

公开(公告)号：US20070259770A1

公开(公告)日：2007-11-08

申请号：US11647889

申请日：2006-12-29

Applicant: Lothar Hofmann ,  Jorg Munch ,  Ralf Dotzel

Inventor： Lothar Hofmann ,  Jorg Munch ,  Ralf Dotzel

IPC: B01J29/04

CPC classification number: B01D53/9418 ,  B01D2251/2067 ,  B01D2255/2065 ,  B01D2255/20738 ,  B01D2255/20761 ,  B01D2255/2092 ,  B01D2255/50 ,  B01D2258/012 ,  B01J29/46 ,  B01J29/7615 ,  B01J35/04 ,  B01J37/0009 ,  B01J2229/186 ,  B01J2229/42

Abstract: The invention relates to an extruded solid catalyst body for breaking down nitrogen oxides in the presence of a reducing agent as well as to a process for manufacture of said body. The solid catalyst body has an active material that contains 60 to 87% by weight of an ion-exchanged zeolite containing at least one metal from the group containing Cu, Hf, La, Au, In, V, lanthanoids and transition metals of group VIII of the periodic system, more than 10 to 37% by weight of aluminum oxide and 2 to 10% by weight of inorganic fibers. The solid catalyst body, the active material of which contains a zeolite can be manufactured by extrusion and has a high degree of mechanical stability at a high catalytic activity.

Abstract translation: 本发明涉及用于在还原剂存在下分解氮氧化物的挤出固体催化剂体以及制造所述体的方法。 固体催化剂体具有含有60〜87重量％的含有Cu，Hf，La，Au，In，V，镧系元素和VIII族过渡金属的至少一种金属的离子交换沸石的活性物质 的超过10至37重量％的氧化铝和2至10重量％的无机纤维。 其活性物质含有沸石的固体催化剂体可以通过挤出制造，并且在高催化活性下具有高度的机械稳定性。

公开(公告)号：US5943958A

公开(公告)日：1999-08-31

申请号：US11077

申请日：1998-01-27

Applicant: Lothar Hofmann ,  Reinhold Ippers ,  Dietmar Thauer ,  Oswald Schmidt ,  Felix Mayer

Inventor： Lothar Hofmann ,  Reinhold Ippers ,  Dietmar Thauer ,  Oswald Schmidt ,  Felix Mayer

IPC: B61G5/08 ,  B61G5/10 ,  B61D49/00

CPC classification number: B61G5/10

Abstract: A rail vehicle, has at least two vehicle sections joined pivotably to one another so as to provide an intermediate space dimension to suit relative motions while traveling around curbs as well as over dips and humps, at least one line provided for each of the vehicle sections for electrical current, air or hydraulic fluid, the at least one line having a line segment that compensates a relative motion of the vehicle sections, a sleeve which spans the intermediate space between the vehicle sections, the sleeve enveloping the line and being connected to the line in a shear-resistant manner, the line segment that compensates for the relative motions of the vehicle sections outside the sleeve extending in a horizontal disposition.

Abstract translation: PCT No.PCT / DE96 / 01324 Sec。 371日期：1998年1月27日 102（e）1998年1月27日PCT PCT 1996年7月15日PCT公布。 公开号WO97 / 05006 日期1997年2月13日一个轨道车辆具有至少两个车辆部分彼此可枢转地接合，以便提供中间空间尺寸以适应相对运动，同时绕路缘石以及超过倾斜和隆起行进，至少提供一条线 用于电流，空气或液压流体的每个车辆部分，所述至少一个线路具有补偿车辆部分的相对运动的线段，跨越车辆部分之间的中间空间的套筒，包围线路的套筒 并且以抗剪切方式连接到所述管线，所述线段补偿所述套筒外部的车辆部分在水平配置中的相对运动。

公开(公告)号：US5605126A

公开(公告)日：1997-02-25

申请号：US596013

申请日：1996-02-06

Applicant: Lothar Hofmann ,  Rudolf Schwarz ,  Andreas Deuber ,  Karl-Heinz Obermeier-Wagner

Inventor： Lothar Hofmann ,  Rudolf Schwarz ,  Andreas Deuber ,  Karl-Heinz Obermeier-Wagner

IPC: F02B3/06 ,  F02B23/06 ,  F02F3/00 ,  F02F3/28 ,  F16J1/00 ,  F02F3/26

CPC classification number: F16J1/00 ,  F02B23/0672 ,  F02F3/00 ,  F02F3/28 ,  F02B2275/14 ,  F02B3/06 ,  F05C2201/021 ,  F05C2201/0448 ,  F05C2201/0466 ,  F05C2201/0475 ,  F05C2201/0487 ,  F05C2201/903 ,  Y02T10/125

Abstract: A piston for diesel engines is made of a toughness-increasing aluminium alloy containing copper, nickel, silicon, magnesium, iron and manganese. The use of this material, which can conventionally be chill-cast, and by implying special dimensions, provides a piston which, despite its relatively light construction, provides the utmost security against cracking in the stressed regions, e.g. the piston boss or the combustion chamber recess.

Abstract translation: 用于柴油发动机的活塞由含有铜，镍，硅，镁，铁和锰的韧性增加的铝合金制成。 通常使用这种材料可以冷却铸造，并且通过暗示特殊的尺寸，可以提供一种活塞，尽管它具有相对较轻的结构，但提供了最大的安全性，可以防止在应力区域例如， 活塞凸台或燃烧室凹部。

公开(公告)号：US20090000470A1

公开(公告)日：2009-01-01

申请号：US11996758

申请日：2006-06-26

Applicant: Simon Reichstein ,  Lothar Hofmann

Inventor： Simon Reichstein ,  Lothar Hofmann

IPC: F16J1/00 ,  B23P15/10

CPC classification number: F02F3/14 ,  C21D1/09 ,  F02F3/26 ,  Y10T29/49249

Abstract: The invention relates to a method of producing a piston (1) with a combustion chamber recess (2) for an internal combustion engine, in which at least one region of the combustion chamber recess (2) comprising at least one recess base (20) is melt-treated in order to re-melt a material in the melt-treated region, so that a buildup of the material in the melt-treated region is changed in a layer with a definable depth, and relates to such a piston (1).

Abstract translation: 本发明涉及一种生产具有用于内燃机的燃烧室凹部（2）的活塞（1）的方法，其中燃烧室凹部（2）的至少一个区域包括至少一个凹座（20） 进行熔融处理以使熔融处理区域中的材料再熔融，使得在熔融处理区域内的材料的积聚在具有可定义深度的层中改变，并且涉及这种活塞（1 ）。

公开(公告)号：US06442932B1

公开(公告)日：2002-09-03

申请号：US09695519

申请日：2000-10-24

Applicant: Lothar Hofmann ,  Günther Pajonk ,  Manfred Weigl ,  Gerhard Wissler

Inventor： Lothar Hofmann ,  Günther Pajonk ,  Manfred Weigl ,  Gerhard Wissler

IPC: F01N300

CPC classification number: F01N3/208 ,  B01D53/9431 ,  B01D53/9495 ,  B60K2015/03348 ,  F01N2560/06 ,  F01N2610/02 ,  F01N2610/146 ,  F01N2900/08 ,  F01N2900/1806 ,  F01N2900/1811 ,  F01N2900/1818 ,  F23J15/003 ,  F23J2215/10 ,  F23J2219/10 ,  Y02A50/2325 ,  Y02T10/24

Abstract: To ensure the maximum possible conversion of nitrogen oxides in a DeNOx catalytic converter in an off-gas cleaning installation for reducing nitrogen oxides and, at the same time, to prevent the reducing agent which is used for the reduction from escaping into the environment, there is provision for the density of a reducing agent solution to be used to determine the volume of the reducing agent solution which is to be metered. The density is regulated in two ways, in that the temperature of the reducing agent solution is measured using a temperature sensor and set by a temperature-control device.

Abstract translation: 为了确保在用于还原氮氧化物的废气净化装置中的DeNOx催化转化器中的氮氧化物的最大可能转化，并且同时为了防止用于还原的还原剂逃逸到环境中，那里 是用于确定要计量的还原剂溶液的体积的还原剂溶液的密度的规定。 密度以两种方式调节，因为还原剂溶液的温度使用温度传感器测量并由温度控制装置设定。

公开(公告)号：US06223526B1

公开(公告)日：2001-05-01

申请号：US09471293

申请日：1999-12-24

Applicant: Gerhard Wissler ,  Günther Pajonk ,  Manfred Weigl ,  Lothar Hofmann

Inventor： Gerhard Wissler ,  Günther Pajonk ,  Manfred Weigl ,  Lothar Hofmann

IPC: F01N300

CPC classification number: F02M37/0082 ,  B60K15/03 ,  B60K2015/03118 ,  B60K2015/03348 ,  B60K2015/0467 ,  F01N3/2066 ,  F01N2610/1406 ,  Y02A50/2325 ,  Y02T10/24 ,  Y10S220/905

Abstract: A tank for a vehicle having a selective catalytic reduction exhaust gas purification system operating with a reducing agent includes a fuel space for the vehicle fuel and a reducing agent space for the reducing agent. The fuel space and the reducing agent space are combined into a single structural that can be fastened as a whole to the vehicle by brackets on the structural unit. This utilizes the limited space available in any vehicle as efficiently as possible and eliminates the need to provide mounting arrangements for separate fuel and reducing agent tanks.

Abstract translation: 具有用还原剂操作的选择性催化还原废气净化系统的车辆用罐包括用于车辆燃料的燃料空间和用于还原剂的还原剂空间。 燃料空间和还原剂空间被组合成单个结构，其可以通过结构单元上的支架整体固定到车辆上。 这尽可能有效地利用了任何车辆中可用的有限空间，并且不需要为单独的燃料和还原剂罐提供安装装置。

公开(公告)号：US4676848A

公开(公告)日：1987-06-30

申请号：US750543

申请日：1985-07-01

Applicant: Peter Ruchel ,  Lothar Hofmann

Inventor： Peter Ruchel ,  Lothar Hofmann

IPC: C22C9/00 ,  C22C9/04

CPC classification number: C22C9/04

Abstract: A brass alloy, a process for the production of a brass material or semi-finished brass product from that type of a brass alloy, as well as to the utilization of the brass material; in essence, the brass alloy for semi-finished products and semi-finished articles, which in addition to a good workability must possess a high resistance to wear, especially when employed for synchronous rings. The foregoing is possible through the intermediary of entirely determined contents of chromium and/or zircon in the previously described brass alloy. The chromium contents hereby vary, on the one hand, in dependence upon the silicon contents, and on the other hand, however, also to a lesser measure upon the remaining alloy components within the range of between 0.01 to 0.15% by weight, and preferably between 0.05 and 0.1% by weight.

Abstract translation: 一种黄铜合金，一种由该类型的黄铜合金制造黄铜材料或半成品黄铜制品的方法以及使用黄铜材料的方法; 实质上，用于半成品和半成品的黄铜合金除了具有良好的加工性之外，还必须具有高的耐磨性，特别是当用于同步环时。 前述的铜合金中的铬和/或锆石的完全确定的含量是可能的。 因此，铬含量一方面依赖于硅含量而变化，另一方面，对于剩余的合金成分在0.01〜0.15重量％的范围内，优选为 在0.05至0.1重量％之间。