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。

公开(公告)号：US20080000444A1

公开(公告)日：2008-01-03

申请号：US10592856

申请日：2005-03-09

Applicant: Lothar Hofmann ,  Klaus Lades ,  Karl-Heinz Obermeier

Inventor： Lothar Hofmann ,  Klaus Lades ,  Karl-Heinz Obermeier

IPC: F02F3/00

CPC classification number: F02F3/0084 ,  C22C9/00 ,  C22C9/04 ,  F05C2201/0475

Abstract: The invention relates to a piston for an internal combustion engine, which consists of a copper alloy. According to the method for producing such a piston, said piston is produced from a copper alloy. According to the invention, a copper alloy is used in the production of a piston for an internal combustion engine.

Abstract translation: 本发明涉及一种由铜合金组成的用于内燃机的活塞。 根据制造这种活塞的方法，所述活塞由铜合金制成。 根据本发明，铜合金用于生产用于内燃机的活塞。

公开(公告)号：US06620391B2

公开(公告)日：2003-09-16

申请号：US10201835

申请日：2002-07-24

Applicant: Raimund Müller ,  Lothar Hofmann ,  Kurt Schardt ,  Wieland Mathes

Inventor： Raimund Müller ,  Lothar Hofmann ,  Kurt Schardt ,  Wieland Mathes

IPC: B01J800

CPC classification number: F01N3/2066 ,  B01D53/8631 ,  B01D53/8656 ,  B01D53/885 ,  B01F3/04049 ,  B01F5/0065 ,  B01F5/045 ,  B01F2005/0091 ,  F01N13/0097 ,  F01N13/017 ,  F01N2240/20 ,  F01N2240/40 ,  F01N2470/22 ,  F01N2610/02 ,  Y02T10/24

Abstract: Exhaust gas to be cleaned is introduced into a conversion and mixing duct and the exhaust gas flows through the duct along a predetermined longitudinal direction. A reducing agent, such as aqueous urea solution, is injected into the exhaust gas stream in the conversion and mixing duct. The exhaust gas stream is then deflected into a reaction duct which extends parallel to or coaxially around the conversion and mixing duct. The exhaust gas then flows in the opposite direction through the reaction duct. A reduction catalyst is disposed in the reaction duct, where the reducible components of the exhaust gas are reduced. The exhaust gas cleaned in this manner is then discharged from the reaction duct.

公开(公告)号：US5974789A

公开(公告)日：1999-11-02

申请号：US28235

申请日：1998-02-23

Applicant: Wieland Mathes ,  Lothar Hofmann ,  Detlev Schoppe ,  Erwin Achleitner ,  Rainer Tost

Inventor： Wieland Mathes ,  Lothar Hofmann ,  Detlev Schoppe ,  Erwin Achleitner ,  Rainer Tost

IPC: F02B37/00 ,  B01D53/94 ,  F01N3/08 ,  F01N3/20 ,  F01N3/28 ,  F01N3/30 ,  F01N3/32 ,  F01N3/36 ,  F02B33/44 ,  F02B37/16 ,  F01N3/00

CPC classification number: F01N3/2066 ,  B01D53/9431 ,  B01D53/9495 ,  F01N3/32 ,  F02B33/44 ,  F02B37/168 ,  F01N2610/02 ,  Y02T10/144 ,  Y02T10/24

Abstract: A method and a device for decomposing nitrogen oxides in an exhaust gas of an internal combustion engine, include feeding the exhaust gas and a reactant which is sprayed into the exhaust gas through the use of compressed air, to a catalytic converter. A compressor for supplying compressed air is associated with the internal combustion engine, and part of the compressed air is diverted and used as the compressed air for injecting the reactant. The sprayed reactant is fed to the catalytic converter, together with the exhaust gas to be purified, which ensures the decomposition of the nitrogen oxides, in particular according to the method of selective catalytic reaction.

Abstract translation: 一种用于分解内燃机废气中的氮氧化物的方法和装置，包括将废气和通过使用压缩空气喷射到废气中的反应物进料到催化转化器。 用于供应压缩空气的压缩机与内燃机相关联，并且一部分压缩空气被转向并用作用于注入反应物的压缩空气。 将喷射的反应物与待纯化的废气一起进料到催化转化器，这确保氮氧化物的分解，特别是根据选择性催化反应的方法。

公开(公告)号：US08136243B2

公开(公告)日：2012-03-20

申请号：US12088117

申请日：2006-08-09

Applicant: Simon Reichstein ,  Lothar Hofmann ,  Peter Konrad

Inventor： Simon Reichstein ,  Lothar Hofmann ,  Peter Konrad

IPC: B23P15/10

CPC classification number: B23P15/10 ,  F02F3/22 ,  F02F2003/0061 ,  F16J1/09 ,  Y10T29/49249 ,  Y10T29/49254 ,  Y10T29/49263 ,  Y10T29/49265

Abstract: The invention relates to a method for producing an internal combustion engine piston which is provided with at least one cooling channel (12) and at least one reinforced piston ring groove (14) consisting in producing a piston blank (1), in forming a groove (10) provided with a cooling channel (12) and an external ring (11) in said piston blank (1), in filling the cooling channel (12) with are movable material (2), in filling the external ring with a reinforcing material (3) in removing the removable material (2) and in finish-machining the piston. A piston made of aluminum alloy and produced according to the inventive method is also disclosed.

Abstract translation: 本发明涉及一种生产内燃机活塞的方法，该内燃机活塞设有至少一个冷却通道（12）和至少一个加强的活塞环槽（14），该活塞环槽（14）由制造活塞坯件（1）组成， （10），在所述活塞坯件（1）中设置有冷却通道（12）和外环（11），用可移动材料（2）填充所述冷却通道（12），用加强件 材料（3）在去除可移除材料（2）和精加工活塞时。 还公开了根据本发明的方法制造的由铝合金制成的活塞。

公开(公告)号：US06539708B1

公开(公告)日：2003-04-01

申请号：US09640152

申请日：2000-08-16

Applicant: Lothar Hofmann ,  Wieland Mathes

Inventor： Lothar Hofmann ,  Wieland Mathes

IPC: F01N300

CPC classification number: F01N3/2066 ,  B01D53/8631 ,  B01D53/8696 ,  B01D53/90 ,  B01D53/9431 ,  B01D53/9495 ,  B01F5/0268 ,  F01N2240/20 ,  F01N2260/024 ,  F01N2570/14 ,  F01N2610/02 ,  F01N2610/102 ,  F01N2610/11 ,  F01N2610/1453 ,  F01N2610/1473 ,  F23J15/003 ,  Y02T10/24

Abstract: A metering system in a combustion unit having an exhaust-gas chamber and a reducing agent reservoir includes an electrically controllable valve for introducing the reducing agent into the exhaust-gas chamber without using compressed air. The valve has an outlet opening that opens directly into the exhaust-gas chamber. The outlet opening is fluidically connected to the reservoir through the valve. The metering system can be produced with only little technical outlay. The metering system includes a recirculating circuit, and the valve has a holding chamber for the reducing agent. The holding chamber is disposed downstream of the outlet opening in a reducing agent flow direction, and is fluidically connected into the recirculating circuit. The metering system includes a coolant circuit for cooling the valve. The valve and its outlet opening is disposed in the exhaust-gas chamber to position the principal axis of the valve at an angle of less than 90° with respect to a principal direction of flow of exhaust gas in the exhaust-gas chamber. The metering system includes a baffle disposed in the exhaust-gas chamber to cause a change in direction of reducing agent introduced therein. The combustion unit can be a diesel engine, and the reducing agent can be a urea solution.

Abstract translation: 在具有废气室和还原剂储存器的燃烧单元中的计量系统包括用于将还原剂引入排气室而不使用压缩空气的电可控阀。 该阀具有直接进入废气室的出口。 出口开口通过阀流体连接到储存器。 计量系统只能用很少的技术支出生产。 计量系统包括循环回路，并且该阀具有用于还原剂的保持室。 保持室以还原剂流动方向设置在出口开口的下游，并且流体连接到再循环回路中。 计量系统包括用于冷却阀的冷却剂回路。 阀及其出口开口设置在废气室中，以相对于废气室中废气流动的主要方向将阀的主轴定位成小于90°的角度。 计量系统包括设置在废气室中的挡板，以引起其中引入的还原剂的方向改变。 燃烧单元可以是柴油发动机，还原剂可以是尿素溶液。

公开(公告)号：US06408619B1

公开(公告)日：2002-06-25

申请号：US09596893

申请日：2000-06-19

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

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

IPC: F01N300

CPC classification number: F01N3/2066 ,  B01D53/8696 ,  B01D53/9431 ,  B01D53/9495 ,  F01N2610/02 ,  F01N2900/1818 ,  Y02T10/24

Abstract: When determining the amount of a reducing agent solution to be introduced into the exhaust gas of a combustion system, in particular of a diesel engine, for catalytically reducing the nitrogen oxides by the SCR process, the concentration of the reducing agent in the reducing agent solution as well as the parameters characterizing the operating state of the combustion system, the exhaust gas and/or the catalyst are taken into consideration. As a result, the safety margin with respect to a theoretically optimum amount to be introduced that is required to avoid a leakage of reducing agent can be reduced, whereby the conversion rate of the nitrogen oxides is improved.

Abstract translation: 当确定要引入到燃烧系统（特别是柴油发动机）的废气中的还原剂溶液的量以通过SCR方法催化还原氮氧化物时，还原剂溶液中还原剂的浓度 以及表征燃烧系统的运行状态的参数，废气和/或催化剂被考虑在内。 结果，可以减少为了避免还原剂泄漏而需要引入的理论上最佳量的安全裕度，从而提高氮氧化物的转化率。

公开(公告)号：US06401449B1

公开(公告)日：2002-06-11

申请号：US09519384

申请日：2000-03-03

Applicant: Lothar Hofmann ,  Wieland Mathes ,  Udo Klumpp

Inventor： Lothar Hofmann ,  Wieland Mathes ,  Udo Klumpp

IPC: F01N300

CPC classification number: F01N3/2066 ,  B01F3/04021 ,  B01F5/0451 ,  B01F5/0693 ,  F01N3/2892 ,  F01N2240/20 ,  F01N2570/14 ,  F01N2610/02 ,  Y02C20/10 ,  Y02T10/24

Abstract: A static mixer in the exhaust emission control system of an excess-air-operated combustion engine is formed of an expanded grid with a plurality of openings formed between crossbars. Using an expanded grid achieves both good mixing of the exhaust gas with a reducing agent in a short mixing path and properly aligns the exhaust flow.

公开(公告)号：US06273120B1

公开(公告)日：2001-08-14

申请号：US09569285

申请日：2000-05-12

Applicant: Lothar Hofmann ,  Wieland Mathes

Inventor： Lothar Hofmann ,  Wieland Mathes

IPC: G05D1113

CPC classification number: F01N3/2066 ,  B01D53/8631 ,  B01D53/8696 ,  B01D53/9431 ,  B01D53/9495 ,  F01N2610/02 ,  F01N2610/08 ,  F01N2610/1473 ,  Y02C20/10 ,  Y02T10/24 ,  Y10T137/2514

Abstract: A device for introducing a liquid reducing agent into an exhaust gas purification system includes a gas line for receiving and carrying a gas, a reducing agent line for receiving and carrying a liquid reducing agent, a mixing chamber for mixing the reducing agent with the gas, the mixing chamber fluidically connected to the gas line and to the aid reducing agent line, a metering valve disposed in the reducing agent line; and a control device for controlling a pressure in the reducing agent line dependent upon a gas pressure in the gas line. The control device can also be used for controlling the reducing agent throughput in the reducing agent line in dependence on the gas pressure in the gas line.

Abstract translation: 将液体还原剂引入废气净化系统中的装置包括用于接收和携带气体的气体管线，用于接收和运送液体还原剂的还原剂管线，用于将还原剂与气体混合的混合室， 所述混合室流体连接到所述气体管线和所述辅助还原剂管线，设置在所述还原剂管线中的计量阀; 以及用于根据气体管线中的气体压力来控制还原剂管线中的压力的​​控制装置。 控制装置还可以用于根据气体管线中的气体压力来控制还原剂管线中的还原剂生产量。

公开(公告)号：US5943858A

公开(公告)日：1999-08-31

申请号：US974259

申请日：1997-11-19

Applicant: Lothar Hofmann ,  Oliver Pfaff ,  Udo Klumpp ,  Wieland Mathes

Inventor： Lothar Hofmann ,  Oliver Pfaff ,  Udo Klumpp ,  Wieland Mathes

IPC: B01D53/86 ,  B01D53/94 ,  F01N3/20 ,  F01N3/00 ,  B29C45/20 ,  A62C5/00

CPC classification number: F01N3/2066 ,  B01D53/8631 ,  B01D53/9431 ,  F01N2610/02 ,  F01N2610/08 ,  Y02T10/24

Abstract: A premixing chamber of a nebulizing device for an exhaust gas purification system serves to mix a compressed gas such as compressed air, for example, with a reducing agent such as urea solution, for example. The premixing chamber is set up on the carburetor principle and includes a compressed gas feed having a taper and a reducing agent feed opening in the region of the taper. The premixing chamber ensures that no deposits originating from the reducing agent can settle in the region of the mixing route. The premixing chamber is provided, in particular, for an exhaust gas purification system of a vehicle fitted with a regulated diesel catalytic converter as well as for stationary diesel engines of up to about 1000 kW (mechanical power).

Abstract translation: 用于排气净化系统的雾化装置的预混合室用于例如将诸如压缩空气的压缩气体与例如尿素溶液等还原剂混合。 预混合室设置在化油器原理上，并且包括在锥形区域中具有锥形和还原剂进料口的压缩气体进料。 预混合室确保源自还原剂的沉积物不会沉淀在混合路线的区域。 特别地，预混合室用于装配有调节柴油催化转化器的车辆的排气净化系统以及高达约1000kW（机械功率）的固定式柴油发动机。