公开(公告)号：US20100186390A1

公开(公告)日：2010-07-29

申请号：US12360901

申请日：2009-01-28

申请人： Kevin L. Perry ,  David J. Cleary ,  Kushal Narayanaswamy ,  Paul M. Najt ,  Wei Li ,  James Donald Smith ,  Chang H. Kim ,  Thompson M. Sloane

发明人： Kevin L. Perry ,  David J. Cleary ,  Kushal Narayanaswamy ,  Paul M. Najt ,  Wei Li ,  James Donald Smith ,  Chang H. Kim ,  Thompson M. Sloane

IPC分类号： F01N3/20 ,  F02D41/30

CPC分类号： F01N3/2073 ,  F01N2240/25 ,  F01N2570/14 ,  Y02A50/2344

摘要： A method for controlling a powertrain includes selectively initiating an ammonia generation cycle, including injecting fuel into a combustion chamber of an engine before a primary combustion event to a calibrated air fuel ratio in a range lean of stoichiometry based upon generation of NOx within the combustion chamber, injecting fuel into the combustion chamber after the primary combustion event based upon an overall air fuel ratio in a range rich of stoichiometry and resulting generation of molecular hydrogen, and utilizing a catalyst device between the engine and a selective catalytic reduction device to produce ammonia.

摘要翻译： 一种用于控制动力系的方法包括选择性地启动氨生成循环，包括在初级燃烧事件之前将燃料喷射到发动机的燃烧室内，以基于燃烧室内的NOx的产生而以不足于化学计量的范围的校准空燃比 在一次燃烧事件之后，基于在大量化学计量的范围内的总体空气燃料比并且产生分子氢，并且利用发动机和选择性催化还原装置之间的催化剂装置产生氨，将燃料喷射到燃烧室中。

公开(公告)号：US20100186391A1

公开(公告)日：2010-07-29

申请号：US12360908

申请日：2009-01-28

申请人： Paul M. Najt ,  Kushal Narayanaswamy ,  Kevin L. Perry ,  David J. Cleary ,  James Donald Smith ,  Wei Li ,  Chang H. Kim

发明人： Paul M. Najt ,  Kushal Narayanaswamy ,  Kevin L. Perry ,  David J. Cleary ,  James Donald Smith ,  Wei Li ,  Chang H. Kim

IPC分类号： F01N3/20 ,  F02D41/30

CPC分类号： B01D53/9431 ,  B01D53/8696 ,  B01D53/9477 ,  B01D2251/2062 ,  B01D2251/2067 ,  F01N3/2073 ,  F01N2240/25 ,  F01N2570/14 ,  Y02A50/2344

摘要： A method for controlling a powertrain includes selectively initiating an ammonia generation cycle including injecting fuel into a combustion chamber of an engine before a primary combustion event to a calibrated air fuel ratio in a range lean of stoichiometry based upon generation of NOx within the combustion chamber, injecting fuel into the powertrain after the primary combustion event based upon an overall air fuel ratio in a range rich of stoichiometry and resulting generation of molecular hydrogen, utilizing a hydrogen forming catalyst to reform the injected fuel, and utilizing a catalyst device between the engine and the selective catalytic reduction device to produce ammonia.

摘要翻译： 一种用于控制动力系的方法包括选择性地启动氨生成循环，包括基于燃烧室内的NOx的产生，在一次燃烧事件之前将燃料喷射到发动机的燃烧室内，使其在基于化学计量的范围内的校准空燃比， 在一次燃烧事件之后，基于总体空燃比在大量化学计量的范围内将燃料喷射到动力总成中，并产生分子氢，利用形成氢的催化剂来重整喷射的燃料，并且利用在发动机和 选择性催化还原装置产生氨。

公开(公告)号：US08216521B2

公开(公告)日：2012-07-10

申请号：US12624709

申请日：2009-11-24

申请人： Wei Li ,  Paul M. Najt ,  Kushal Narayanaswamy ,  Kevin L. Perry ,  Chang H. Kim

发明人： Wei Li ,  Paul M. Najt ,  Kushal Narayanaswamy ,  Kevin L. Perry ,  Chang H. Kim

IPC分类号： B01D50/00

CPC分类号： F01N3/2073 ,  B01D53/8634 ,  B01D53/9454 ,  B01D53/9477 ,  B01D2255/1021 ,  B01D2255/1023 ,  B01D2255/1025 ,  B01D2255/206 ,  B01D2255/20715 ,  B01D2255/20746 ,  B01D2255/2092 ,  B01D2255/502 ,  B01D2255/504 ,  B01D2255/908 ,  F01N3/035 ,  F01N2610/02 ,  Y02T10/22 ,  Y02T10/24

摘要： An exhaust gas aftertreatment system for treating an engine-out exhaust gas feedstream of a spark-ignition direct-injection engine includes a multi-stage catalytic converter comprising a converter inlet, a converter outlet, and a substrate having a first end associated with the converter inlet and a second end associated with the converter outlet. The substrate further includes a multiplicity of flow passages between the first and second ends of the substrate, a first surface location corresponding to the first end of the substrate, and a second surface location corresponding to the second end of the substrate. The first and second washcoat stages include washcoats formulated to generate hydrogen and ammonia from the engine-out exhaust gas feedstream. An ammonia-selective catalytic reduction device is downstream of the first and second washcoat stages.

摘要翻译： 一种用于处理火花点火直喷式发动机的发动机排气进料流的废气后处理系统包括多级催化转化器，其包括转化器入口，转换器出口和具有与转换器相关联的第一端的基板 入口和与转换器出口相关联的第二端。 衬底还包括在衬底的第一和第二端之间的多个流动通道，对应于衬底的第一端的第一表面位置和对应于衬底的第二端的第二表面位置。 第一和第二洗涂阶段包括配制成从发动机排出的废气进料流产生氢气和氨的洗涂层。 氨选择性催化还原装置在第一和第二洗涂阶段的下游。

公开(公告)号：US20120060472A1

公开(公告)日：2012-03-15

申请号：US12881233

申请日：2010-09-14

申请人： Wei Li ,  Chang H. Kim ,  Kevin L. Perry ,  Paul M. Najt ,  Kushal Narayanaswamy

发明人： Wei Li ,  Chang H. Kim ,  Kevin L. Perry ,  Paul M. Najt ,  Kushal Narayanaswamy

IPC分类号： F01N3/00 ,  F01N3/10

CPC分类号： B01D53/9445 ,  B01D53/9422 ,  B01D53/944 ,  B01D53/9477 ,  B01D2255/204 ,  B01D2255/2063 ,  B01D2255/20746 ,  B01D2255/402 ,  B01D2255/911 ,  B01D2258/012 ,  F01N3/101 ,  F01N3/103 ,  F01N3/2066 ,  F01N3/2073 ,  F01N13/009 ,  F01N2370/02 ,  Y02T10/22 ,  Y02T10/24

摘要： An exhaust aftertreatment system that receives an exhaust flow from a lean-burn engine and a method for treating the exhaust flow are described. The exhaust aftertreatment system may include a three-way-catalyst, an oxidation catalyst, and a NH3—SCR catalyst. The three-way-catalyst passively generates NH3 from native NOX contained in the exhaust flow when an A/F mixture supplied to the engine is cycled from lean to rich. The generated NH3 is then stored in the NH3—SCR catalyst to facilitate NOX reduction when the A/F mixture supplied to the engine is cycled back to lean. The oxidation catalyst is located upstream of the NH3—SCR catalyst and operates to lower the NO to NO2 molar ratio of the NOX fed to the NH3—SCR catalyst. The oxidation catalyst comprises perovskite oxide particles.

摘要翻译： 描述了从贫燃发动机接收废气流的排气后处理系统和排气流处理方法。 排气后处理系统可以包括三元催化剂，氧化催化剂和NH 3 -SCR催化剂。 当提供给发动机的A / F混合物从稀释循环到浓缩时，三元催化剂被动地从排气流中包含的天然NOX产生NH 3。 然后将生成的NH 3储存在NH3-SCR催化剂中，以便当提供给发动机的A / F混合物循环回稀释时促进NO x还原。 氧化催化剂位于NH3-SCR催化剂的上游，并可以降低进料到NH3-SCR催化剂的NOX的NO2摩尔比。 氧化催化剂包括钙钛矿氧化物颗粒。

公开(公告)号：US20100293930A1

公开(公告)日：2010-11-25

申请号：US12624709

申请日：2009-11-24

申请人： Wei Li ,  Paul M. Najt ,  Kushal Narayanaswamy ,  Kevin L. Perry ,  Chang H. Kim

发明人： Wei Li ,  Paul M. Najt ,  Kushal Narayanaswamy ,  Kevin L. Perry ,  Chang H. Kim

IPC分类号： F01N3/10

CPC分类号： F01N3/2073 ,  B01D53/8634 ,  B01D53/9454 ,  B01D53/9477 ,  B01D2255/1021 ,  B01D2255/1023 ,  B01D2255/1025 ,  B01D2255/206 ,  B01D2255/20715 ,  B01D2255/20746 ,  B01D2255/2092 ,  B01D2255/502 ,  B01D2255/504 ,  B01D2255/908 ,  F01N3/035 ,  F01N2610/02 ,  Y02T10/22 ,  Y02T10/24

摘要： An exhaust gas aftertreatment system for treating an engine-out exhaust gas feedstream of a spark-ignition direct-injection engine includes a multi-stage catalytic converter comprising a converter inlet, a converter outlet, and a substrate having a first end associated with the converter inlet and a second end associated with the converter outlet. The substrate further includes a multiplicity of flow passages between the first and second ends of the substrate, a first surface location corresponding to the first end of the substrate, and a second surface location corresponding to the second end of the substrate. A first washcoat stage is applied to the substrate at the first surface location corresponding to the first end of the substrate. A second washcoat stage is applied to the substrate at the second surface location corresponding to the second end of the substrate. The first and second washcoat stages include washcoats formulated to generate hydrogen and ammonia from the engine-out exhaust gas feedstream. An ammonia-selective catalytic reduction device is downstream of the first and second washcoat stages.

摘要翻译： 一种用于处理火花点火直喷式发动机的发动机排气进料流的废气后处理系统包括多级催化转化器，其包括转化器入口，转换器出口和具有与转换器相关联的第一端的基板 入口和与转换器出口相关联的第二端。 衬底还包括在衬底的第一和第二端之间的多个流动通道，对应于衬底的第一端的第一表面位置和对应于衬底的第二端的第二表面位置。 在对应于衬底的第一端的第一表面位置处，将第一洗涂阶段施加到衬底。 在对应于衬底的第二端的第二表面位置处，将第二洗涂层阶段施加到衬底。 第一和第二洗涂阶段包括配制成从发动机排出的废气进料流产生氢气和氨的洗涂层。 氨选择性催化还原装置在第一和第二洗涂阶段的下游。

公开(公告)号：US09714625B2

公开(公告)日：2017-07-25

申请号：US13192859

申请日：2011-07-28

申请人： Min Sun ,  Kevin L. Perry ,  Donovan L. Dibble ,  Chang H. Kim ,  Mary Beth Furness

发明人： Min Sun ,  Kevin L. Perry ,  Donovan L. Dibble ,  Chang H. Kim ,  Mary Beth Furness

IPC分类号： F01N3/00 ,  F02D41/14 ,  F01N11/00

CPC分类号： F02D41/146 ,  F01N11/00 ,  F01N2560/021 ,  F01N2560/025 ,  F01N2560/026 ,  F02D41/1443 ,  F02D41/1446 ,  F02D41/1454 ,  F02D41/1461 ,  F02D2041/1468 ,  Y02T10/22 ,  Y02T10/47

摘要： A system according to the principles of the present disclosure includes an air/fuel ratio determination module and an emission level determination module. The air/fuel ratio determination module determines an air/fuel ratio based on input from an air/fuel ratio sensor positioned downstream from a three-way catalyst that is positioned upstream from a selective catalytic reduction (SCR) catalyst. The emission level determination module selects one of a predetermined value and an input based on the air/fuel ratio. The input is received from a nitrogen oxide sensor positioned downstream from the three-way catalyst. The emission level determination module determines an ammonia level based on the one of the predetermined value and the input received from the nitrogen oxide sensor.

公开(公告)号：US08919099B2

公开(公告)日：2014-12-30

申请号：US13157669

申请日：2011-06-10

申请人： Min Sun ,  Kevin L. Perry ,  Chang H. Kim

发明人： Min Sun ,  Kevin L. Perry ,  Chang H. Kim

IPC分类号： F01N3/00 ,  F01N3/20 ,  F02D41/02 ,  F02D41/14

CPC分类号： F01N3/2073 ,  F02D41/0235 ,  F02D41/1446 ,  F02D2041/1433 ,  F02D2041/1469 ,  Y02T10/22

摘要： A system according to the principles of the present disclosure includes a rate determination module, a storage level determination module, and an air/fuel ratio control module. The rate determination module determines an ammonia generation rate in a three-way catalyst based on a reaction efficiency and a reactant level. The storage level determination module determines an ammonia storage level in a selective catalytic reduction (SCR) catalyst positioned downstream from the three-way catalyst based on the ammonia generation rate. The air/fuel ratio control module controls an air/fuel ratio of an engine based on the ammonia storage level.

摘要翻译： 根据本公开的原理的系统包括速率确定模块，存储水平确定模块和空燃比控制模块。 速率确定模块基于反应效率和反应物水平来确定三元催化剂中的氨生成速率。 存储水平确定模块基于氨产生速率确定位于三元催化剂下游的选择性催化还原（SCR）催化剂中的氨储存水平。 空气/燃料比控制模块基于氨储存水平来控制发动机的空燃比。

公开(公告)号：US20130025261A1

公开(公告)日：2013-01-31

申请号：US13192859

申请日：2011-07-28

申请人： Min Sun ,  Kevin L. Perry ,  Donovan L. Dibble ,  Chang H. Kim ,  Mary Beth Furness

发明人： Min Sun ,  Kevin L. Perry ,  Donovan L. Dibble ,  Chang H. Kim ,  Mary Beth Furness

IPC分类号： F01N3/18

CPC分类号： F02D41/146 ,  F01N11/00 ,  F01N2560/021 ,  F01N2560/025 ,  F01N2560/026 ,  F02D41/1443 ,  F02D41/1446 ,  F02D41/1454 ,  F02D41/1461 ,  F02D2041/1468 ,  Y02T10/22 ,  Y02T10/47

摘要： A system according to the principles of the present disclosure includes an air/fuel ratio determination module and an emission level determination module. The air/fuel ratio determination module determines an air/fuel ratio based on input from an air/fuel ratio sensor positioned downstream from a three-way catalyst that is positioned upstream from a selective catalytic reduction (SCR) catalyst. The emission level determination module selects one of a predetermined value and an input based on the air/fuel ratio. The input is received from a nitrogen oxide sensor positioned downstream from the three-way catalyst. The emission level determination module determines an ammonia level based on the one of the predetermined value and the input received from the nitrogen oxide sensor.

摘要翻译： 根据本发明的原理的系统包括空/燃比确定模块和排放水平确定模块。 空气/燃料比确定模块基于位于位于选择性催化还原（SCR）催化剂上游的三元催化剂下游的空气/燃料比传感器的输入来确定空燃比。 排放水平确定模块基于空燃比选择预定值和输入中的一个。 从位于三元催化剂下游的氮氧化物传感器接收输入。 发射电平确定模块基于预定值和从氮氧化物传感器接收的输入中的一个来确定氨水平。

公开(公告)号：US20120311998A1

公开(公告)日：2012-12-13

申请号：US13157669

申请日：2011-06-10

申请人： Min Sun ,  Kevin L. Perry ,  Chang H. Kim

发明人： Min Sun ,  Kevin L. Perry ,  Chang H. Kim

IPC分类号： F01N9/00 ,  F02D41/00

CPC分类号： F01N3/2073 ,  F02D41/0235 ,  F02D41/1446 ,  F02D2041/1433 ,  F02D2041/1469 ,  Y02T10/22

摘要： A system according to the principles of the present disclosure includes a rate determination module, a storage level determination module, and an air/fuel ratio control module. The rate determination module determines an ammonia generation rate in a three-way catalyst based on a reaction efficiency and a reactant level. The storage level determination module determines an ammonia storage level in a selective catalytic reduction (SCR) catalyst positioned downstream from the three-way catalyst based on the ammonia generation rate. The air/fuel ratio control module controls an air/fuel ratio of an engine based on the ammonia storage level.

摘要翻译： 根据本公开的原理的系统包括速率确定模块，存储水平确定模块和空燃比控制模块。 速率确定模块基于反应效率和反应物水平来确定三元催化剂中的氨生成速率。 存储水平确定模块基于氨产生速率确定位于三元催化剂下游的选择性催化还原（SCR）催化剂中的氨储存水平。 空气/燃料比控制模块基于氨储存水平来控制发动机的空燃比。

公开(公告)号：US20130019589A1

公开(公告)日：2013-01-24

申请号：US13185531

申请日：2011-07-19

申请人： Chang H. Kim ,  Gongshin Qi ,  Wei Li

发明人： Chang H. Kim ,  Gongshin Qi ,  Wei Li

IPC分类号： F01N3/035

CPC分类号： B01D53/9477 ,  B01D53/9409 ,  B01D53/9495 ,  F01N3/2066 ,  F01N3/2803 ,  F01N13/0093 ,  F01N2610/02 ,  Y02C20/10 ,  Y02T10/22 ,  Y02T10/24

摘要： An internal combustion engine configured to operate in a compression-ignition combustion mode includes an exhaust aftertreatment system. The exhaust aftertreatment system includes a catalyst device fluidly coupled upstream of an ammonia-selective catalytic reduction device. The, catalyst device includes first, second, and third elements fluidly coupled in series. The first element includes a three-way catalytic element, the second element includes a NOx adsorber, and the third element includes an oxidation catalytic element.

摘要翻译： 构造成以压缩点火燃烧模式工作的内燃机包括排气后处理系统。 排气后处理系统包括在氨选择性催化还原装置的上游流体耦合的催化剂装置。 催化剂装置包括串联流体耦合的第一，第二和第三元件。 第一元件包括三元催化元件，第二元件包括NOx吸附器，第三元件包括氧化催化元件。