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公开(公告)号：US08127537B2
公开(公告)日：2012-03-06
申请号：US12280939
申请日：2007-02-27
CPC分类号： F01N3/2828 , F01N3/0864 , F01N2240/20 , F01N2330/30 , F01N2510/0682 , F01N2560/02 , F01N2560/025 , Y02T10/22
摘要： An exhaust system for a spark-ignited internal combustion engine comprises a three-way catalyst composition including an oxygen storage component, which TWC composition is coated on a flow-through monolith substrate, which substrate comprising a plurality of channels, each channel having a length extending from an inlet end to an outlet end and a single lambda sensor, wherein the substrate comprises a portion of the plurality of channels wherein the TWC composition in at least a part of the length of channels extending from the inlet end has a reduced oxygen storage activity, or no oxygen storage activity, relative to the TWC composition in a remainder of the substrate, the arrangement being such that the single lambda sensor is contacted substantially only with exhaust gas that has first contacted the TWC composition having a reduced oxygen storage activity or no oxygen storage activity.
摘要翻译： 用于火花点火的内燃机的排气系统包括三元催化剂组合物，其包含储氧组分，该TWC组合物涂覆在流通式整料衬底上，该衬底包括多个通道，每个通道具有长度 从入口端延伸到出口端和单个λ传感器，其中所述基底包括所述多个通道的一部分，其中所述TWC组合物在从所述入口端延伸的所述通道长度的至少一部分中具有减少的氧气存储 活性或没有储氧活性相对于底物剩余部分中的TWC组合物，其布置使得单个λ传感器基本上仅与先前接触具有降低的储氧活性的TWC组合物的废气接触，或 无储氧活性。
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公开(公告)号：US20080314034A1
公开(公告)日：2008-12-25
申请号：US12280939
申请日：2007-02-27
IPC分类号： F01N3/10
CPC分类号： F01N3/2828 , F01N3/0864 , F01N2240/20 , F01N2330/30 , F01N2510/0682 , F01N2560/02 , F01N2560/025 , Y02T10/22
摘要： An exhaust system for a spark-ignited internal combustion engine comprises a three-way catalyst composition including an oxygen storage component, which TWC composition is coated on a flow-through monolith substrate, which substrate comprising a plurality of channels, each channel having a length extending from an inlet end to an outlet end and a single lambda sensor, wherein the substrate comprises a portion of the plurality of channels wherein the TWC composition in at least a part of the length of channels extending from the inlet end has a reduced oxygen storage activity, or no oxygen storage activity, relative to the TWC composition in a remainder of the substrate, the arrangement being such that the single lambda sensor is contacted substantially only with exhaust gas that has first contacted the TWC composition having a reduced oxygen storage activity or no oxygen storage activity.
摘要翻译： 用于火花点火的内燃机的排气系统包括三元催化剂组合物，其包含储氧组分，该TWC组合物涂覆在流通式整料衬底上，该衬底包括多个通道，每个通道具有长度 从入口端延伸到出口端和单个λ传感器，其中所述基底包括所述多个通道的一部分，其中所述TWC组合物在从所述入口端延伸的所述通道长度的至少一部分中具有减少的氧气存储 活性或没有储氧活性相对于底物剩余部分中的TWC组合物，其布置使得单个λ传感器基本上仅与先前接触具有降低的储氧活性的TWC组合物的废气接触，或 无储氧活性。
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公开(公告)号：US20110036071A1
公开(公告)日：2011-02-17
申请号：US12675913
申请日：2008-08-27
申请人： Louise Clare Arnold , Robert James Brisley , Graham Peter Champion , Marie Charlotte Clements , Neil Robert Collins , Darrell Morris , Paul Richard Phillips
发明人： Louise Clare Arnold , Robert James Brisley , Graham Peter Champion , Marie Charlotte Clements , Neil Robert Collins , Darrell Morris , Paul Richard Phillips
CPC分类号： F01N3/2828 , F01N3/035 , F01N11/00 , F01N2510/0682 , F01N2560/02 , F01N2560/022 , F01N2560/023 , F01N2560/025 , F01N2560/026 , Y02A50/2325 , Y02T10/22
摘要： An exhaust system for an internal combustion engine, which system comprises a monolith substrate (10) coated with a catalyst, which monolith substrate comprising a plurality of substantially parallel channels, each channel having a length extending from an upstream end to a downstream end; and a first sensor disposed in a hole (16) defined in part by an external wall of the monolith substrate, wherein the monolith substrate comprises a portion (12) of the plurality of channels wherein the catalyst composition in at least a part of the length of channels extending from the upstream end has an increased activity for a reaction for which the catalyst composition is intended relative to catalyst composition in a remainder (14) of the monolith substrate, the arrangement being such that the sensor is contacted substantially only with exhaust gas that has first contacted the catalyst composition having an increased activity.
摘要翻译： 一种用于内燃机的排气系统，该系统包括涂覆有催化剂的整料基材（10），所述整料基材包括多个基本平行的通道，每个通道具有从上游端延伸到下游端的长度; 以及第一传感器，其布置在由所述整体式基板的外壁部分限定的孔（16）中，其中所述整料基板包括所述多个通道的部分（12），其中所述催化剂组合物在所述多个通道的至少一部分中 从上游端延伸的通道对于催化剂组合物相对于整料衬底的剩余部分（14）中的催化剂组成具有增加的活性，该布置使得传感器基本上仅与废气 其首先使活性增加的催化剂组合物接触。
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