公开(公告)号：US06941746B2

公开(公告)日：2005-09-13

申请号：US10718839

申请日：2003-11-20

申请人： Theodore J. Tarabulski ,  Jeffrey A. Brooks

发明人： Theodore J. Tarabulski ,  Jeffrey A. Brooks

IPC分类号： F01N3/20 ,  F01N13/02 ,  F01N3/00

CPC分类号： F01N3/208 ,  F01N3/2885 ,  F01N3/2892 ,  F01N13/0097 ,  F01N2230/04 ,  F01N2240/20 ,  F01N2560/026 ,  F01N2560/06 ,  F01N2560/07 ,  F01N2570/18 ,  F01N2610/02 ,  F01N2610/146 ,  F01N2900/0408 ,  F01N2900/0412 ,  F01N2900/08 ,  F01N2900/1814 ,  Y02A50/2325 ,  Y02T10/24

摘要： The present invention provides for the retrofitting diesel truck engines with a system to reduce NOx emissions. The SCR system of the present invention, including a controller, a reagent tank, and an injection system, is installed on a vehicle. A NOx detector is temporarily installed as part of the system. The vehicle is then operated to collect engine parameters including fuel injection timing, RPM, load, exhaust heat, exhaust flow rate, and the like, together with measurements of the NOx emissions under various operating conditions. Based on the recorded data at various operating conditions, a reagent injection strategy is developed and installed at the reagent injection controller. During vehicle operation, the injector injects reagent into the exhaust system based on control signals from the reagent injection controller in accordance with the injection strategy in order to reduce NOx emissions at the various operating conditions.

摘要翻译： 本发明提供了一种用于减少NOx排放的系统来改进柴油卡车发动机。 本发明的SCR系统，包括控制器，试剂罐和注射系统，安装在车辆上。 作为系统的一部分临时安装NOx检测器。 然后操作车辆以收集包括燃料喷射正时，RPM，负载，排热，排气流量等的发动机参数，以及在各种操作条件下的NOx排放的测量。 基于各种操作条件下记录的数据，开发试剂注入策略并安装在试剂注射控制器上。 在车辆操作期间，喷射器根据喷射策略基于来自试剂喷射控制器的控制信号将试剂注入到排气系统中，以便在各种操作条件下减少NOx排放。

公开(公告)号：US20110016848A1

公开(公告)日：2011-01-27

申请号：US12936151

申请日：2008-04-02

申请人： Jeffrey A. Brooks

发明人： Jeffrey A. Brooks

IPC分类号： F01N3/00 ,  F01N3/023 ,  F01N3/10 ,  F01N9/00

CPC分类号： F01N3/025 ,  F01N3/0231 ,  F01N3/027 ,  F01N3/035 ,  F01N3/0807 ,  F01N3/0814 ,  F01N3/0842 ,  F01N3/103 ,  F01N3/2006 ,  F01N3/2033 ,  F01N3/2066 ,  F01N9/002 ,  F01N13/009 ,  F01N2240/14 ,  F01N2240/16 ,  F01N2250/02 ,  F01N2250/04 ,  F01N2250/06 ,  F01N2250/12 ,  F01N2250/14 ,  F01N2560/06 ,  F01N2610/02 ,  F01N2610/03 ,  F01N2900/1404 ,  Y02T10/24 ,  Y02T10/26 ,  Y02T10/47

摘要： A system for treating diesel exhaust gases includes an engine for producing a diesel exhaust stream, a diesel particulate filter downstream of the engine and adapted to remove particulates from the exhaust stream, a heater upstream of the filter adapted to deliver energy in sufficient amounts to the exhaust stream to cause active regeneration of the filter, and a diesel oxidation catalyst upstream of the heater adapted to cause passive regeneration of the filter when the exhaust stream is above a light-off temperature of the diesel oxidation catalyst. A NOx reduction catalyst can be provided downstream of the heater. Methods for treating diesel exhaust gases are also disclosed.

摘要翻译： 一种用于处理柴油机废气的系统包括用于产生柴油机废气流的发动机，在发动机下游的柴油微粒过滤器，并且适于从排气流中除去微粒;过滤器上游的加热器，其适于将足够量的能量输送到 废气流以引起过滤器的主动再生，以及当排气流高于柴油机氧化催化剂的起燃温度时，加热器上游的柴油氧化催化剂适于引起过滤器的被动再生。 可以在加热器的下游设置NOx还原催化剂。 还公开了处理柴油机废气的方法。