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公开(公告)号：US20150160102A1
公开(公告)日：2015-06-11
申请号：US14102964
申请日：2013-12-11
Applicant: Caterpillar Inc.
Inventor： Andrew M. Denis , Mirza P. Baig , Sachin S. Deshmukh , Eric P. Spaeth
CPC classification number: G01N1/22 , F01N3/2066 , F01N13/008 , F01N2240/20 , F01N2560/026 , G01N1/2252 , G01N33/0037 , Y02A50/245 , Y02T10/24
Abstract: A system including a sampling flute is provided. The sampling flute defines a conduit therein. The sampling flute includes a plurality of holes configured for allowing passage of an exhaust gas flow therethrough. The system also includes a hood provided on the sampling flute. The hood is configured to enclose a nitrogen oxide sensor therein. The hood includes an inlet in fluid communication with the sampling flute. The hood also includes an outlet positioned opposed to the inlet. The hood is configured to cause the exhaust gas flow to impact a side of the nitrogen oxide sensor.
Abstract translation: 提供了一种包括采样槽的系统。 采样槽在其中限定一个导管。 采样槽包括被配置为允许废气流通过其中的多个孔。 该系统还包括在采样槽上提供的罩。 罩被构造成在其中包围氮氧化物传感器。 罩包括与采样槽流体连通的入口。 罩还包括与入口相对定位的出口。 罩被构造成使废气流动冲击氮氧化物传感器的一侧。
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公开(公告)号：US08966965B2
公开(公告)日：2015-03-03
申请号：US13861781
申请日：2013-04-12
Applicant: Caterpillar Inc.
Inventor： James Joshua Driscoll , Arvind Jujare , Shawn Herold , Jason Hudgens , Sachin S. Deshmukh
CPC classification number: F15D1/025 , B01F5/0618 , B01F5/0648 , B01F5/0688 , B01F5/0689 , B01F2005/0631 , B01F2005/0636 , F01N3/2066 , F01N3/208 , F01N11/00 , F01N13/008 , F01N2240/20 , F01N2470/00 , F01N2560/026 , G01M15/102 , Y02T10/24
Abstract: Accurate measurement of exhaust gas compounds is necessary for correct operation of exhaust treatment systems, such as Selective Catalytic Reduction (SCR) units used in diesel engines. However, accurate sensor readings assume an even distribution of compounds in an exhaust stream in order to use a sampled measurement to be extrapolated to the compound concentrations in the full stream. A structure placed in an exhaust passage downstream of an SCR reaction unit causes turbulence in the exhaust gas while developing a minimal backpressure. This turbulence helps create a more uniform distribution of compounds in the exhaust. As a result, an exhaust gas sensor gives more accurate readings even when the sensor is placed in relatively close proximity to an output of the SCR system.
Abstract translation: 排气处理系统的正确操作，例如柴油发动机中使用的选择性催化还原（SCR）单元，对废气化合物的精确测量是必需的。 然而，精确的传感器读数假设化合物在排气流中的均匀分布，以便将采样的测量值推算为全流中的化合物浓度。 放置在SCR反应单元下游的排气通道中的结构在显现最小背压的同时引起排气中的湍流。 这种湍流有助于在排气中产生更均匀的化合物分布。 因此，即使当传感器被放置在相对靠近SCR系统的输出端时，排气传感器也能提供更准确的读数。
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公开(公告)号：US20140305198A1
公开(公告)日：2014-10-16
申请号：US13861781
申请日：2013-04-12
Applicant: CATERPILLAR INC.
Inventor： James Joshua Driscoll , Arvind Jujare , Shawn Herold , Jason Hudgens , Sachin S. Deshmukh
CPC classification number: F15D1/025 , B01F5/0618 , B01F5/0648 , B01F5/0688 , B01F5/0689 , B01F2005/0631 , B01F2005/0636 , F01N3/2066 , F01N3/208 , F01N11/00 , F01N13/008 , F01N2240/20 , F01N2470/00 , F01N2560/026 , G01M15/102 , Y02T10/24
Abstract: Accurate measurement of exhaust gas compounds is necessary for correct operation of exhaust treatment systems, such as Selective Catalytic Reduction (SCR) units used in diesel engines. However, accurate sensor readings assume an even distribution of compounds in an exhaust stream in order to use a sampled measurement to be extrapolated to the compound concentrations in the full stream. A structure placed in an exhaust passage downstream of an SCR reaction unit causes turbulence in the exhaust gas while developing a minimal backpressure. This turbulence helps create a more uniform distribution of compounds in the exhaust. As a result, an exhaust gas sensor gives more accurate readings even when the sensor is placed in relatively close proximity to an output of the SCR system.
Abstract translation: 排气处理系统的正确操作，例如柴油发动机中使用的选择性催化还原（SCR）单元，对废气化合物的精确测量是必需的。 然而，精确的传感器读数假设化合物在排气流中的均匀分布，以便将采样的测量值推算为全流中的化合物浓度。 放置在SCR反应单元下游的排气通道中的结构在显现最小背压的同时引起排气中的湍流。 这种湍流有助于在排气中产生更均匀的化合物分布。 因此，即使当传感器被放置在相对靠近SCR系统的输出端时，排气传感器也能提供更准确的读数。
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