Methods for reducing emissions from diesel engines
    3.
    发明授权
    Methods for reducing emissions from diesel engines 失效
    减少柴油发动机排放的方法

    公开(公告)号:US07987663B2

    公开(公告)日:2011-08-02

    申请号:US11948305

    申请日:2007-11-30

    IPC分类号: F01N3/36

    摘要: A method is provided for operating a diesel engine with reduced emissions. The method comprises combusting a first biodiesel blend fuel in a diesel engine resulting in the production of diesel exhaust gases containing NOx. The diesel exhaust gases are admixed with a second biodiesel blend fuel, and the second biodiesel blend fuel is hydrolyzed to form reducing agents. The diesel exhaust gases containing NOx are passed through an NOx-reducing catalyst to reduce the NOx through a selective catalytic reduction reaction with the reducing agents. The invention further provides a method for operating a diesel engine with reduced emissions, comprising combusting a first biodiesel blend fuel in a diesel engine resulting in the production of diesel exhaust gases containing NOx. A second biodiesel blend fuel is converted in a fuel processor thereby forming reducing agents, and the diesel exhaust gases are admixed with the reducing agents. The diesel exhaust gases containing NOx are passed through an NOx-reducing catalyst to reduce the NOx through a selective catalytic reduction reaction with the reducing agents.

    摘要翻译: 提供了一种以减少排放来操作柴油发动机的方法。 该方法包括在柴油发动机中燃烧第一生物柴油混合燃料,导致生产含有NOx的柴油废气。 柴油废气与第二生物柴油混合燃料混合,第二生物柴油混合燃料被水解以形成还原剂。 含有NOx的柴油废气通过NOx还原催化剂,以通过与还原剂的选择性催化还原反应来还原NOx。 本发明还提供了一种用于操作具有减少的排放的柴油发动机的方法,包括在柴油发动机中燃烧第一生物柴油混合燃料,导致生产含有NOx的柴油废气。 在燃料处理器中转化第二生物柴油混合燃料,从而形成还原剂,并且将柴油废气与还原剂混合。 含有NOx的柴油废气通过NOx还原催化剂,以通过与还原剂的选择性催化还原反应来还原NOx。

    METHODS FOR REDUCING EMISSIONS FROM DIESEL ENGINES
    4.
    发明申请
    METHODS FOR REDUCING EMISSIONS FROM DIESEL ENGINES 失效
    减少柴油发动机排放的方法

    公开(公告)号:US20090139215A1

    公开(公告)日:2009-06-04

    申请号:US11948305

    申请日:2007-11-30

    IPC分类号: F01N3/10

    摘要: A method is provided for operating a diesel engine with reduced emissions. The method comprises combusting a first biodiesel blend fuel in a diesel engine resulting in the production of diesel exhaust gases containing NOx. The diesel exhaust gases are admixed with a second biodiesel blend fuel, and the second biodiesel blend fuel is hydrolyzed to form reducing agents. The diesel exhaust gases containing NOx are passed through an NOx-reducing catalyst to reduce the NOx through a selective catalytic reduction reaction with the reducing agents. The invention further provides a method for operating a diesel engine with reduced emissions, comprising combusting a first biodiesel blend fuel in a diesel engine resulting in the production of diesel exhaust gases containing NOx. A second biodiesel blend fuel is converted in a fuel processor thereby forming reducing agents, and the diesel exhaust gases are admixed with the reducing agents. The diesel exhaust gases containing NOx are passed through an NOx-reducing catalyst to reduce the NOx through a selective catalytic reduction reaction with the reducing agents.

    摘要翻译: 提供了一种以减少排放来操作柴油发动机的方法。 该方法包括在柴油发动机中燃烧第一生物柴油混合燃料,导致生产含有NOx的柴油废气。 柴油废气与第二生物柴油混合燃料混合,第二生物柴油混合燃料被水解以形成还原剂。 含有NOx的柴油废气通过NOx还原催化剂,以通过与还原剂的选择性催化还原反应来还原NOx。 本发明还提供了一种用于操作具有减少的排放的柴油发动机的方法,包括在柴油发动机中燃烧第一生物柴油混合燃料,导致生产含有NOx的柴油废气。 在燃料处理器中转化第二生物柴油混合燃料,从而形成还原剂,并且将柴油废气与还原剂混合。 含有NOx的柴油废气通过NOx还原催化剂,以通过与还原剂的选择性催化还原反应来还原NOx。

    System and method for controlling nitrous oxide emissions of an internal combustion engine and regeneration of an exhaust treatment device
    8.
    发明授权
    System and method for controlling nitrous oxide emissions of an internal combustion engine and regeneration of an exhaust treatment device 有权
    用于控制内燃机的一氧化二氮排放的系统和方法以及废气处理装置的再生

    公开(公告)号:US08459010B2

    公开(公告)日:2013-06-11

    申请号:US12713617

    申请日:2010-02-26

    IPC分类号: F01N3/035

    摘要: A catalyst composition is provided that includes a catalytic metal secured to a substrate, and the substrate is mesoporous and has pores that are templated. A catalyst composition includes a catalytic metal secured to a mesoporous substrate. The mesoporous substrate is a reaction product of a reactive solution, a solvent, a modifier, and a templating agent. A method for controlling nitrous oxide emissions including the catalyst composition comprising introducing a regeneration fuel into an exhaust stream upstream relative to the catalyst composition and heating the exhaust stream upstream relative to the catalyst composition. When the regeneration fuel is introduced the air/fuel ratio λ of an air/fuel mixture of a lean burn exhaust is greater than 1.

    摘要翻译: 提供了一种催化剂组合物,其包括固定到基底上的催化金属,并且该基底是中孔的并且具有模板化的孔。 催化剂组合物包括固定到介孔基材上的催化金属。 介孔底物是反应溶液,溶剂,改性剂和模板剂的反应产物。 一种用于控制一氧化二氮排放的方法,包括催化剂组合物,包括将再生燃料引入相对于催化剂组合物上游的排气流,并相对于催化剂组合物加热废气流。 当引入再生燃料时,稀燃排气的空气/燃料混合物的空气/燃料比λ大于1。

    DEVICE, METHOD, AND SYSTEM FOR EXHAUST GAS TREATMENT
    9.
    发明申请
    DEVICE, METHOD, AND SYSTEM FOR EXHAUST GAS TREATMENT 审中-公开
    用于排气处理的装置,方法和系统

    公开(公告)号:US20120216515A1

    公开(公告)日:2012-08-30

    申请号:US13034505

    申请日:2011-02-24

    IPC分类号: F01N3/10 B01D53/94 B01D50/00

    摘要: Various methods and systems are provided for an exhaust gas treatment device for an exhaust gas treatment system. In one example, the exhaust gas treatment device includes a primary flow passage through which exhaust gas flows to the exhaust gas treatment device, a first sub-catalyst partially disposed in the primary flow passage splitting the exhaust gas into a first gas flow and a bypass flow, and a second sub-catalyst disposed downstream of the first sub-catalyst in the bypass flow forming a second gas flow, where the second gas flow is different from the first gas flow.

    摘要翻译: 为废气处理系统的废气处理装置提供各种方法和系统。 在一个实例中,排气处理装置包括:废气流经排气处理装置的主流路,部分设置在主流路中的第一副催化剂,将排气分成第一气流和旁路 流动,以及第二副催化剂,其设置在旁路流中的第一副催化剂的下游,形成第二气流,其中第二气流与第一气流不同。

    EXHAUST TREATMENT SYSTEM AND METHOD OF OPERATION
    10.
    发明申请
    EXHAUST TREATMENT SYSTEM AND METHOD OF OPERATION 审中-公开
    排气处理系统及其运行方法

    公开(公告)号:US20120047877A1

    公开(公告)日:2012-03-01

    申请号:US12873127

    申请日:2010-08-31

    IPC分类号: F01N9/00 F01N3/20

    摘要: An exhaust treatment system is provided. Method of increasing activation of NOx reduction catalyst using two or more reductant is discussed. The exhaust treatment system includes an exhaust source, a reductant source, a nitrogen oxide (NOx) reduction catalyst, a sensor, and a controller. The reductant source includes a first reductant and second reductant, and is disposed to inject a reductant stream into an exhaust stream from the exhaust source. The NOx catalyst is disposed to receive both the exhaust stream and reductant stream. The sensor is disposed to sense a system parameter related to carbon loading of the catalyst and produce a signal corresponding to the system parameter. The controller is disposed to receive the signal and to control dosing of the reductant stream based at least in part on the signal.

    摘要翻译: 提供排气处理系统。 讨论了使用两种或更多种还原剂增加NOx还原催化剂活化的方法。 排气处理系统包括排气源,还原剂源,氮氧化物(NOx)还原催化剂,传感器和控制器。 还原剂源包括第一还原剂和第二还原剂,并且被设置成将还原剂流注入到来自排气源的废气流中。 NOx催化剂被设置成接收排气流和还原剂流两者。 传感器被设置为感测与催化剂的碳负载相关的系统参数,并产生对应于系统参数的信号。 控制器设置成接收信号并且至少部分地基于信号来控制还原剂流的计量。