公开(公告)号：US07624570B2

公开(公告)日：2009-12-01

申请号：US11494372

申请日：2006-07-27

Applicant: Johannes Walter Reuter ,  Subbaraya Radhamohan ,  Dmitry Arie Shamis ,  Christian Thomas Chimner

Inventor： Johannes Walter Reuter ,  Subbaraya Radhamohan ,  Dmitry Arie Shamis ,  Christian Thomas Chimner

IPC: F01N3/00

CPC classification number: F01N3/0842 ,  B01D53/90 ,  B01D53/9409 ,  B01D53/9495 ,  B01D2251/2062 ,  B01D2251/208 ,  B01D2258/012 ,  F01N3/0821 ,  F01N3/0871 ,  F01N13/0097 ,  F01N13/02 ,  F01N2250/12 ,  F01N2570/14 ,  F01N2610/04 ,  F02D41/0275 ,  Y02A50/2325 ,  Y02T10/24

Abstract: A method is provided for regenerating a LNT in a diesel engine exhaust aftertreatment system. Typically, the aftertreatment system comprises a fuel reformer, a LNT, and a SCR catalyst in that order. Over the course of the regeneration, the concentration or flow rate of syn gas is increased, peaked, and then reduced. Preferably, the syn gas concentration or flow rate and the fuel reformer temperature are simultaneously controlled using at least a fuel injector and an engine intake air throttle. The pattern of increasing the syn gas concentration or flow rate during a first part of the regeneration and decreasing the syn gas concentration of flow rate in a latter part of the regeneration reduces the fuel penalty for the regeneration and improves the ammonia production rate as compared to a system in which the syn gas concentration or flow rate is essentially constant throughout the regeneration.

Abstract translation: 提供了一种用于在柴油发动机排气后处理系统中再生LNT的方法。 通常，后处理系统依次包括燃料重整器，LNT和SCR催化剂。 在再生过程中，合成气的浓度或流量增加，峰值，然后降低。 优选地，使用至少燃料喷射器和发动机进气节流阀同时控制合成气浓度或流量和燃料重整器温度。 在再生的第一部分中增加合成气体浓度或流量的模式，并且在再生后期部分降低合成气体流速浓度降低了再生的燃料损失，并且提高了氨生产率，与 其中合成气浓度或流速在整个再生过程中基本上恒定的系统。

公开(公告)号：US20060179825A1

公开(公告)日：2006-08-17

申请号：US11059498

申请日：2005-02-16

Applicant: Haoran Hu ,  Subbaraya Radhamohan ,  Karen Bevan ,  James McCarthy ,  Johannes Reuter ,  Vishal Singh ,  Wayne Kaboord ,  Fred Begale ,  Dawn Becher

Inventor： Haoran Hu ,  Subbaraya Radhamohan ,  Karen Bevan ,  James McCarthy ,  Johannes Reuter ,  Vishal Singh ,  Wayne Kaboord ,  Fred Begale ,  Dawn Becher

IPC: F01N3/00 ,  F01N3/02

CPC classification number: F01N3/2066 ,  B01D46/0036 ,  B01D46/0063 ,  B01D46/2418 ,  B01D53/04 ,  B01D53/9431 ,  B01D53/944 ,  B01D2251/30 ,  B01D2251/40 ,  B01D2251/60 ,  B01D2253/102 ,  B01D2253/104 ,  B01D2253/108 ,  B01D2255/2063 ,  B01D2257/402 ,  B01D2257/404 ,  B01D2258/012 ,  B01D2259/40086 ,  B01D2259/40088 ,  B01D2259/4566 ,  B01D2279/30 ,  F01N3/0231 ,  F01N3/025 ,  F01N3/027 ,  F01N3/035 ,  F01N3/0814 ,  F01N3/0821 ,  F01N3/0835 ,  F01N3/0842 ,  F01N3/0871 ,  F01N3/0878 ,  F01N13/009 ,  F01N13/0097 ,  F01N13/017 ,  F01N2240/20 ,  F01N2240/30 ,  F01N2330/06 ,  F01N2330/10 ,  F01N2330/12 ,  F01N2330/14 ,  F01N2330/22 ,  F01N2370/24 ,  F01N2410/12 ,  F01N2430/06 ,  F01N2510/065 ,  F01N2570/14 ,  F01N2610/02 ,  Y02A50/2325 ,  Y02A50/2344 ,  Y02C20/10 ,  Y02T10/24

Abstract: One concept of the inventors relates to a system and method in which a particulate filter comprises at least about 40% by weight of an NOx adsorbant. The filter can be used as both an NOx trap and a particulate filter. By constructing the filter elements using a substantial amount of NOx adsorbant, a large volume of NOx adsorbant can be incorporated into the particulate filter, which substantially reduces the volume and expense of an exhaust system that includes both a catalytic diesel particulate filter and an NOx trap having a large quantity of NOx adsorbant. In a preferred embodiment, the filter also oxidizes NO to NO2. In another preferred embodiment, an SCR catalyst is position downstream of the filter elements.

Abstract translation: 本发明人的一个概念涉及一种系统和方法，其中颗粒过滤器包含至少约40重量％的NOx吸附剂。 该过滤器既可用作NOx捕集器又可用作微粒过滤器。 通过使用大量的NOx吸附剂来构建过滤元件，可以将大量的NOx吸附剂并入微粒过滤器中，这大大降低了排气系统的体积和费用，该排气系统包括催化柴油微粒过滤器和NOx捕集器 具有大量的NOx吸附剂。 在优选的实施方案中，过滤器也将NO氧化为NO 2。 在另一优选实施例中，SCR催化剂位于过滤元件的下游。

公开(公告)号：US20060174608A1

公开(公告)日：2006-08-10

申请号：US11052647

申请日：2005-02-07

Applicant: Haoran Hu ,  Subbaraya Radhamohan ,  Karen Bevan ,  James McCarthy ,  Johannes Reuter ,  Vishal Singh ,  Jiyang Yan

Inventor： Haoran Hu ,  Subbaraya Radhamohan ,  Karen Bevan ,  James McCarthy ,  Johannes Reuter ,  Vishal Singh ,  Jiyang Yan

IPC: F01N3/10 ,  F01N3/00

CPC classification number: B01D53/90 ,  B01D53/9431 ,  B01D53/96 ,  B60L11/1887 ,  B60L11/1892 ,  B60L11/1894 ,  F01N3/0871 ,  F01N3/20 ,  F01N9/00 ,  F01N2240/30 ,  F02N11/04 ,  F02N11/0814 ,  F02N2200/061 ,  H01M8/0618 ,  H01M8/12 ,  H01M16/006 ,  H01M2250/20 ,  H01M2250/40 ,  Y02E60/525 ,  Y02E60/56 ,  Y02T10/20 ,  Y02T10/47 ,  Y02T90/32 ,  Y02T90/34

Abstract: The invention relates to a power generation system with a continuously operating fuel reformer. Preferably, the fuel reformer is either off, warming up, or operating with an essentially constant fueling rate. Some of the reformed fuel is intermittently used to regenerate a NOx trap that treats the exhaust of an internal combustion engine. Any reformed fuel not used for other purposes is supplied to a fuel cell. The fuel reformer does not shut down between NOx trap regeneration cycles except when the engine is also shut down. The invention substantially eliminates issues of reformer response time as they relate to NOx trap regeneration.

Abstract translation: 本发明涉及具有连续运行的燃料重整器的发电系统。 优选地，燃料重整器关闭，预热或以基本恒定的加油速率运行。 一些重整燃料被间歇地用于再生处理内燃机排气的NOx捕集器。 未用于其他目的的任何重整燃料都被供应到燃料电池。 除了发动机也关闭之外，燃油重整器不会在NOx捕集器再生循环之间关闭。 本发明基本上消除了与NOx捕集器再生有关的重整器响应时间的问题。

公开(公告)号：US06729314B2

公开(公告)日：2004-05-04

申请号：US10073713

申请日：2002-02-11

Applicant: Subbaraya Radhamohan ,  Simon T. Joque

Inventor： Subbaraya Radhamohan ,  Simon T. Joque

IPC: F02B47108

CPC classification number: F02M26/48 ,  F02M26/54 ,  F02M26/67

Abstract: A method of operating a control system to move an EGR valve (24) toward its seat (32), in which the control system includes an actuator (16) operable in response to an electrical position command signal (84, 86). The method comprises the steps of determining (102) if the valve is being commanded toward a closed position, and determining (106) if the valve is still at least a predetermined distance (X) from a Stage 1 Position. If both answers are affirmative, the valve is commanded toward the Stage 1 Position, then the logic determines when the valve is within a predetermined tolerance (T) of the Stage 1 Position, and when it is, the logic provides a position command signal corresponding to an unchanging position of the valve for a predetermined period of time (Y), while any overshoot of the valve position settles out, and the valve position stabilizes before the logic proceeds with the rest of the closing operations. The result is greatly reduced stress on the valve (24) and the gear train which drives the valve.

Abstract translation: 一种操作控制系统以使EGR阀（24）向其座（32）移动的方法，其中所述控制系统包括响应于电位置指令信号（84,86）而可操作的致动器（16）。 该方法包括以下步骤：确定（102）是否将阀门指向关闭位置，以及确定（106）阀是否仍然距离阶段1位置至少预定的距离（X）。 如果两个答案都是肯定的，则阀被指示到阶段1位置，则逻辑确定阀门何时在第一阶段位置的预定公差（T）内，并且当它是时，逻辑提供对应的位置命令信号 到阀的不变位置达预定时间段（Y），而阀位置的任何过冲都会停止，并且在其余的关闭操作之前，阀位稳定。 结果是大大减少了驱动阀门的阀门（24）和齿轮系的应力。