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1. 发明授权

US08506893B2 Selective catalytic reduction catalyst system with expanded temperature window 有权
标题翻译：选择性催化还原催化剂体系具有扩展的温度窗口
公开(公告)号：US08506893B2
公开(公告)日：2013-08-13
申请号：US12108175
申请日：2008-04-23
申请人： Harendra S Gandhi , Joseph Robert Theis
发明人： Harendra S Gandhi , Joseph Robert Theis
IPC分类号： B01D50/00
CPC分类号： B01D53/9418 , B01D53/9477 , B01D2251/2062 , B01D2255/20738 , B01D2255/20761 , Y02T10/24
摘要： According to one embodiment of the present invention a selective reduction catalyst system with a broad temperature window for lean-burn gasoline and diesel engines is disclosed. The system includes a first and second zone, wherein the first zone is composed of an iron SCR catalyst and a second zone is composed of a copper SCR catalyst, and wherein the second zone is positioned downstream of the first zone. In another embodiment, a small copper SCR catalyst is placed in front of a second zone composed of an iron SCR catalyst and a third zone composed of a copper SCR catalyst, wherein the volume of the first copper SCR catalyst is a fraction of the volume of the second copper SCR catalyst. In yet another embodiment, a diverter valve would be included in the system to eliminate any NOx penalty produced by the front Cu SCR catalyst.
摘要翻译：根据本发明的一个实施方案，公开了一种具有用于稀燃汽油和柴油发动机的宽温度窗口的选择还原催化剂体系。该系统包括第一和第二区域，其中第一区域由铁SCR催化剂组成，第二区域由铜SCR催化剂组成，并且其中第二区域位于第一区域的下游。在另一个实施方案中，将小铜SCR催化剂放置在由铁SCR催化剂构成的第二区域的前面，以及由铜SCR催化剂组成的第三区域，其中第一铜SCR催化剂的体积为第二铜SCR催化剂。在另一个实施例中，系统中将包括一个分流阀，以消除由前Cu SCR催化剂产生的任何NOx损失。

2. 发明授权

US07181905B2 Lean-burn engine exhaust air-fuel and temperature management strategy for improved catalyst durability 有权
标题翻译：精益燃烧发动机尾气空气燃料和温度管理策略，提高催化剂耐久性
公开(公告)号：US07181905B2
公开(公告)日：2007-02-27
申请号：US10726746
申请日：2003-12-02
申请人： Gopichandra Surnilla , Harendra S. Gandhi , Christian T. Goralski, Jr. , Robert W. McCabe , George Graham , Hungwen Jen
发明人： Gopichandra Surnilla , Harendra S. Gandhi , Christian T. Goralski, Jr. , Robert W. McCabe , George Graham , Hungwen Jen
IPC分类号： F01N3/00
CPC分类号： F02D41/12 , F02D41/0235 , F02D41/123 , F02D2200/0802
摘要： A system is described for improving engine and vehicle performance by considering the effects of exhaust conditions on catalyst particle growth. Specifically, engine operation is adjusted to reduce operating in such conditions, and a diagnostic routine is described for determining the effects of any operation that can cause such particle growth. Further, routines are described for controlling various vehicle conditions, such as deceleration fuel shut-off, to reduce effects of the particle growth on emission performance.
摘要翻译：通过考虑排气条件对催化剂颗粒生长的影响，描述了一种改进发动机和车辆性能的系统。具体地说，调节发动机运转以减少在这种情况下的运转，并且描述了用于确定任何能够引起这种颗粒生长的操作的影响的诊断程序。此外，描述了用于控制各种车辆状态（例如减速燃料切断）的例程，以减少颗粒生长对排放性能的影响。

3. 发明授权

US08375701B2 Hydrocarbon retaining and purging system 有权
标题翻译：烃保留和净化系统
公开(公告)号：US08375701B2
公开(公告)日：2013-02-19
申请号：US12182777
申请日：2008-07-30
申请人： Jason Aaron Lupescu , Shane Elwart , James Michael Kerns , Michael James Uhrich , Harendra S. Gandhi
发明人： Jason Aaron Lupescu , Shane Elwart , James Michael Kerns , Michael James Uhrich , Harendra S. Gandhi
IPC分类号： F02M25/06
CPC分类号： F01N3/0871 , F01N3/0807 , F01N3/0835 , F01N2370/04 , F01N2550/03 , Y02T10/20
摘要： Method and systems are provided for operating an engine having a hydrocarbon retaining system coupled to an engine exhaust and an engine intake. During an engine cold start, routing exhaust gas to the hydrocarbon retaining system to store hydrocarbons in the hydrocarbon retaining system. Then, depending on temperature, the hydrocarbons are purged with varying amounts of exhaust gas and fresh air in order to maintain proper temperature control.
摘要翻译：提供了用于操作具有耦合到发动机排气和发动机进气口的烃保持系统的发动机的方法和系统。在发动机冷启动期间，将废气排放到烃保留系统以将碳氢化合物储存在烃保持系统中。然后，根据温度，用不同量的废气和新鲜空气吹扫碳氢化合物，以保持适当的温度控制。

4. 发明申请

US20090120071A1 Hydrocarbon Retaining System for Flex-Fuel Combustion Engine 有权
标题翻译：用于Flex燃料燃烧发动机的烃保留系统
公开(公告)号：US20090120071A1
公开(公告)日：2009-05-14
申请号：US12147292
申请日：2008-06-26
申请人： Harendra S. Gandhi , Michael James Uhrich , Shane Elwart , James Michael Kerns , Jason Aaron Lupescu
发明人： Harendra S. Gandhi , Michael James Uhrich , Shane Elwart , James Michael Kerns , Jason Aaron Lupescu
IPC分类号： F01N9/00
CPC分类号： F02D41/0025 , F01N5/02 , F02B23/104 , F02B2075/125 , F02D13/0207 , F02D13/0219 , F02D19/084 , F02D19/088 , F02D41/062 , F02M25/0809 , F02M25/0854 , F02M25/089 , Y02T10/123 , Y02T10/16 , Y02T10/36
摘要： Systems, methods, and computer readable storage media are described in which exhaust gas is routed to a hydrocarbon retaining device during starting, and purged to the engine intake manifold. Various alternative approaches are described for controlling operation and diagnosing degradation. Further, various interrelated configurations are described.
摘要翻译：描述了系统，方法和计算机可读存储介质，其中废气在启动期间被引导到碳氢化合物保持装置，并被清除到发动机进气歧管。描述了用于控制操作和诊断降解的各种替代方法。此外，描述了各种相关的配置。

5. 发明授权

US07284368B2 Computer device to control operation during catalyst desulfurization to preserve catalytic function 有权
标题翻译：控制催化剂脱硫操作的计算机装置，保持催化功能
公开(公告)号：US07284368B2
公开(公告)日：2007-10-23
申请号：US10726745
申请日：2003-12-02
申请人： Gopichandra Surnilla , Harendra S. Gandhi , Christian T. Goralski, Jr. , Robert W. McCabe , George Graham , Hungwen Jen
发明人： Gopichandra Surnilla , Harendra S. Gandhi , Christian T. Goralski, Jr. , Robert W. McCabe , George Graham , Hungwen Jen
IPC分类号： F01N3/00
CPC分类号： F02D41/028 , F02D41/1408
摘要： A system is described for improving engine and vehicle performance by considering the effects of exhaust conditions on catalyst particle growth. Specifically, engine operation is adjusted to reduce operating in such conditions, and a diagnostic routine is described for determining the effects of any operation that can cause such particle growth. Further, routines are described for controlling various vehicle conditions, such as deceleration fuel shut-off, to reduce effects of the particle growth on emission performance.
摘要翻译：通过考虑排气条件对催化剂颗粒生长的影响，描述了一种改进发动机和车辆性能的系统。具体地说，调节发动机运转以减少在这种情况下的运转，并且描述了用于确定任何能够引起这种颗粒生长的操作的影响的诊断程序。此外，描述了用于控制各种车辆状态（例如减速燃料切断）的例程，以减少颗粒生长对排放性能的影响。

6. 发明授权

US08844274B2 Compact diesel engine exhaust treatment system 有权
标题翻译：紧凑型柴油机废气处理系统
公开(公告)号：US08844274B2
公开(公告)日：2014-09-30
申请号：US12351174
申请日：2009-01-09
申请人： Christine Kay Lambert , Yinyan Huang , Douglas A. Dobson , Harendra S. Gandhi
发明人： Christine Kay Lambert , Yinyan Huang , Douglas A. Dobson , Harendra S. Gandhi
IPC分类号： F01N3/00 , F01N3/02 , F01N3/10 , F01N3/035 , B01D53/94 , F01N3/20 , F01N13/02
CPC分类号： F01N3/035 , B01D53/9472 , B01D53/9477 , B01D2251/2062 , B01D2251/2067 , B01D2255/1021 , B01D2255/1023 , B01D2255/20738 , B01D2255/20761 , B01D2255/9025 , B01D2255/9032 , B01D2255/9035 , B01D2255/9155 , B01D2255/9205 , B01D2258/012 , F01N3/106 , F01N3/2066 , F01N13/009 , F01N13/02 , F01N2510/06 , F01N2610/02 , Y02A50/2325 , Y02T10/24
摘要： A diesel engine exhaust treatment system and method is provided which utilizes a diesel particulate filter positioned in the exhaust gas stream of a vehicle which includes an SCR catalyst, an ammonia oxidation catalyst, and/or a diesel oxidation catalyst. The system is capable of performing multiple functions including converting NOx to N2, converting HC and CO to H2O and CO2, trapping particulates, and minimizing ammonia emissions. The system is more compact and efficient than prior systems utilizing separate catalyst units, and minimizes backpressure while maximizing catalyst performance.
摘要翻译：提供一种柴油发动机排气处理系统和方法，其利用位于车辆的排气流中的柴油微粒过滤器，其包括SCR催化剂，氨氧化催化剂和/或柴油氧化催化剂。该系统能够执行多种功能，包括将NOx转化为N2，将HC和CO转化为H 2 O和CO 2，捕获颗粒，并最大限度地减少氨的排放。该系统比使用分离的催化剂单元的现有系统更紧凑和有效，并且使反压最小化同时最大化催化剂性能。

7. 发明授权

US08261531B2 Hydrocarbon retaining system for flex-fuel combustion engine 有权
标题翻译：用于柔性燃料燃烧发动机的碳氢化合物保留系统
公开(公告)号：US08261531B2
公开(公告)日：2012-09-11
申请号：US12147292
申请日：2008-06-26
申请人： Harendra S. Gandhi , Michael James Uhrich , Shane Elwart , James Michael Kerns , Jason Aaron Lupescu
发明人： Harendra S. Gandhi , Michael James Uhrich , Shane Elwart , James Michael Kerns , Jason Aaron Lupescu
IPC分类号： F01N3/00 , F01N3/10 , F02M37/20 , F02M33/02 , F02B25/06 , F02B13/00
CPC分类号： F02D41/0025 , F01N5/02 , F02B23/104 , F02B2075/125 , F02D13/0207 , F02D13/0219 , F02D19/084 , F02D19/088 , F02D41/062 , F02M25/0809 , F02M25/0854 , F02M25/089 , Y02T10/123 , Y02T10/16 , Y02T10/36
摘要： Systems, methods, and computer readable storage media are described in which exhaust gas is routed to a hydrocarbon retaining device during starting, and purged to the engine intake manifold. Various alternative approaches are described for controlling operation and diagnosing degradation. Further, various interrelated configurations are described.
摘要翻译：描述了系统，方法和计算机可读存储介质，其中废气在启动期间被引导到碳氢化合物保持装置，并被清除到发动机进气歧管。描述了用于控制操作和诊断降解的各种替代方法。此外，描述了各种相关的配置。

8. 发明授权

US08062618B2 Exhaust aftertreatment system and method of treating exhaust gas 有权
标题翻译：排气后处理系统及废气处理方法
公开(公告)号：US08062618B2
公开(公告)日：2011-11-22
申请号：US12425986
申请日：2009-04-17
申请人： Lifeng Xu , Harendra S Gandhi , Robert Walter McCabe , Clifford Norman Montreuil
发明人： Lifeng Xu , Harendra S Gandhi , Robert Walter McCabe , Clifford Norman Montreuil
IPC分类号： B01D53/56
CPC分类号： F01N3/0814 , B01D53/9422 , B01D53/944 , B01D53/9481 , B01D2255/1021 , B01D2255/1023 , B01D2255/1025 , B01D2255/202 , B01D2255/204 , B01D2255/20738 , B01D2255/20761 , B01D2255/50 , B01D2255/9022 , B01D2258/012 , B01J23/58 , B01J29/072 , F01N3/021 , F01N3/0842 , F01N13/0093 , F01N2370/04 , Y02T10/24
摘要： A diesel exhaust aftertreatment system and method are provided. The system includes a lean NOx trap for reducing NOx and a transition metal-exchanged zeolite booster catalyst positioned downstream from the lean NOx trap for further reducing NOx. The lean NOx trap includes a NOx adsorbent material and one or more platinum group metals, and has a platinum group metal loading of less than about 90 g/ft3. The aftertreatment system provides high NOx conversion over a broad temperature range without the use of ammonia as a major reductant.
摘要翻译：提供柴油机废气后处理系统和方法。该系统包括用于还原NOx的贫NOx捕集器和位于贫NOx捕集器下游的用于进一步还原NOx的过渡金属交换的沸石增效催化剂。贫NOx捕集器包括NOx吸附剂材料和一种或多种铂族金属，并且具有小于约90g / ft 3的铂族金属负载量。后处理系统在宽的温度范围内提供高的NOx转化率，而不使用氨作为主要的还原剂。

9. 发明授权

US5307627A Method and apparatus for oxidizing hydrocarbons from exhaust gases 失效
标题翻译：从废气中氧化烃类的方法和装置
公开(公告)号：US5307627A
公开(公告)日：1994-05-03
申请号：US1601
申请日：1993-01-07
申请人： Louis R. Christensen , Matthew J. Gladd , Harendra S. Gandhi
发明人： Louis R. Christensen , Matthew J. Gladd , Harendra S. Gandhi
IPC分类号： F01N3/08 , F01N3/20 , F01N13/02 , F02M25/07
CPC分类号： F01N3/0835 , F01N13/009 , F01N3/0878 , F01N3/2013 , F01N2250/12 , F01N2410/12 , F01N3/20 , F02M26/15 , Y02T10/26
摘要： An apparatus and method for oxidizing hydrocarbons in gases exhausted from an internal combustion engine 10. The method comprises passing exhaust gases, during initial operation of the engine, through a hydrocarbon trap 24, where the hydrocarbons in the exhaust gases are adsorbed before the gases are exhausted into the atmosphere. After a catalyst 16 is heated to the light-off temperature for hydrocarbons, the gases are prevented from passing through the hydrocarbon trap 24 and are passed through the catalyst 16 before being exhausted into the atmosphere. When the engine 10 speed is at steady state, such that the oxidation of hydrocarbons by the catalyst 16 is at peak efficiency, a portion of the gases exiting the catalyst 16 is diverted to pass through and flush hydrocarbons from the hydrocarbon trap 24 while the remaining gas is exhausted into the atmosphere. The diverted gases containing the flushed hydrocarbons desorbed from the hydrocarbon trap 24 are then passed through the catalyst 16. After the hydrocarbons have been desorbed from the hydrocarbon trap 24, all gases passing through the catalyst 16 are exhausted into the atmosphere.
摘要翻译：一种用于对从内燃机10排出的气体中的碳氢化合物进行氧化的装置和方法。该方法包括在发动机的初始运行期间使废气通过烃捕集器24，其中废气中的烃被吸附在气体之前用尽了气氛。在将催化剂16加热到烃的起燃温度之后，防止气体通过烃阱24，并在排入大气之前通过催化剂16。当发动机10转速处于稳定状态时，使得催化剂16对烃的氧化达到峰值效率，则一部分离开催化剂16的气体被转向通过并从烃阱24中冲洗烃，而其余的气体已经排放到大气中。然后将含有从烃捕获器24解吸的冲洗烃的转移气体通过催化剂16.在烃从烃捕获器24解吸后，通过催化剂16的所有气体排放到大气中。

10. 发明授权

US4808441A Metal articles having corrosion-resistant epoxy coatings 失效
标题翻译：具有耐腐蚀环氧涂层的金属制品
公开(公告)号：US4808441A
公开(公告)日：1989-02-28
申请号：US50126
申请日：1987-05-15
申请人： Mohinder S. Chattha , Harendra S. Gandhi
发明人： Mohinder S. Chattha , Harendra S. Gandhi
IPC分类号： B05D7/14 , B05D5/00 , B05D7/24 , B32B15/092 , C08G59/50 , C08G59/58 , C09D163/00 , B05D3/02 , B32B15/08 , B32B27/38 , F01N7/16
CPC分类号： C08G59/5033 , C08G59/504 , C08G59/58 , C09D163/00 , Y10T428/31529
摘要： This invention is directed to the use of particularly defined epoxy-amine compositions as a protective coating on metals which are exposed to a high temperature, corrosive environment. The metal may be that employed in motor vehicle exhaust system components, such as mufflers and tailpipes. The epoxy-amine compositions comprises epoxy resin component, aromatic amine component, optionally, acid component selected from polycarboxylic acid and anhydrides thereof and optionally, polyol component.

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