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1.发明授权公开(公告)号：US09512763B2
公开(公告)日：2016-12-06
申请号：US14562250
申请日：2014-12-05
Applicant: Caterpillar Inc.
Inventor： Jason Hudgens , Matthew Fahrenkrug , Theron Cassidy , Brian Cole , Kevin Dea
CPC classification number: F01N3/2066 , F01N3/2892 , F01N3/2896 , F01N2570/14 , F01N2590/08 , F01N2610/02 , F01N2610/14 , F01N2610/1453 , F01N2610/1486 , Y02T10/24
Abstract: A dosing system for dosing diesel exhaust fluid (DEF) into an inlet of a selective catalytic reduction (SCR) aftertreatment module of a diesel engine is described. The dosing system may comprise a DEF supply line configured to deliver the DEF from a pump to a first injector and a second injector at the inlet. The DEF supply line may include a tri-axis connector configured to split the DEF from the pump into two portions each exiting one of a first outlet port and a second outlet port, a first delivery conduit configured to deliver the DEF exiting the first outlet port to the first injector, and a second delivery conduit configured to deliver the DEF exiting the second outlet port to the second injector. The first injector and the second injector may dose the same quantity of the DEF into the inlet of the aftertreatment module.
Abstract translation: 描述了一种用于将柴油机排气流体（DEF）计量到柴油发动机的选择性催化还原（SCR）后处理模块的入口中的计量系统。 配量系统可以包括DEF供应管线，其被配置为将DEF从泵输送到第一注射器，并且在入口处将DEF输送到第二喷射器。 DEF供应管线可以包括三轴连接器，其构造成将DEF从泵分离成两个部分，每个部分分别排出第一出口端口和第二出口端口中的一个;第一输送管道，其构造成将DEF排出第一出口端口 以及第二输送导管，其构造成将从第二出口端口排出的DEF输送到第二喷射器。 第一注射器和第二注射器可以将相同量的DEF施加到后处理模块的入口中。
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公开(公告)号：US11008915B2
公开(公告)日：2021-05-18
申请号：US16359882
申请日：2019-03-20
Applicant: Caterpillar Inc.
Inventor： Kurtis Chenoweth , Jason Hudgens , Xiaohui Gong , Shivsinh Parmar
Abstract: A diesel exhaust fluid (DEF) system and a method of controlling the DEF system are disclosed. The method may include determining that a shutdown condition of the DEF system is satisfied; providing a control signal to open a valve of a buffer tank of the DEF system based on determining that the shutdown condition of the DEF system is satisfied; determining that a level of DEF remaining in the buffer tank satisfies a threshold; and closing the valve of the buffer tank based on the level of DEF remaining in the buffer tank satisfying the threshold.
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Patent Agency Ranking
公开(公告)号：US10731536B1
公开(公告)日：2020-08-04
申请号：US16359719
申请日：2019-03-20
Applicant: Caterpillar Inc.
Inventor： Kurtis Chenoweth , Jianping Pan , Mohamed Daoud , Y. T. Bui , Jason Hudgens , Ian Aguirre
Abstract: An exhaust gas aftertreatment system is disclosed. The system may include an inlet to receive an exhaust gas produced by an engine and a first section to receive the exhaust gas from the inlet. The system may include a mixing tube to receive the exhaust gas from the first section and a reductant injector to inject a reductant into the mixing tube. The system may include a second section to receive the exhaust gas from the mixing tube and to facilitate mixing of the reductant and the exhaust gas after the exhaust gas exits the mixing tube and a diffuser to receive the exhaust gas from the second section. The system may include a plurality of catalysts to receive the exhaust gas from the diffuser and at least one outlet to receive the exhaust gas from the plurality of catalysts.
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4.发明申请公开(公告)号：US20160160725A1
公开(公告)日：2016-06-09
申请号：US14562250
申请日：2014-12-05
Applicant: Caterpillar Inc.
Inventor： Jason Hudgens , Matthew Fahrenkrug , Theron Cassidy , Brian Cole , Kevin Dea
CPC classification number: F01N3/2066 , F01N3/2892 , F01N3/2896 , F01N2570/14 , F01N2590/08 , F01N2610/02 , F01N2610/14 , F01N2610/1453 , F01N2610/1486 , Y02T10/24
Abstract: A dosing system for dosing diesel exhaust fluid (DEF) into an inlet of a selective catalytic reduction (SCR) aftertreatment module of a diesel engine is described. The dosing system may comprise a DEF supply line configured to deliver the DEF from a pump to a first injector and a second injector at the inlet. The DEF supply line may include a tri-axis connector configured to split the DEF from the pump into two portions each exiting one of a first outlet port and a second outlet port, a first delivery conduit configured to deliver the DEF exiting the first outlet port to the first injector, and a second delivery conduit configured to deliver the DEF exiting the second outlet port to the second injector. The first injector and the second injector may dose the same quantity of the DEF into the inlet of the aftertreatment module.
Abstract translation: 描述了一种用于将柴油机排气流体（DEF）计量到柴油发动机的选择性催化还原（SCR）后处理模块的入口中的计量系统。 配量系统可以包括DEF供应管线，其被配置为将DEF从泵输送到第一注射器，并且在入口处将DEF输送到第二喷射器。 DEF供应管线可以包括三轴连接器，其构造成将DEF从泵分离成两个部分，每个部分分别排出第一出口端口和第二出口端口中的一个;第一输送管道，其构造成将DEF排出第一出口端口 以及第二输送导管，其构造成将从第二出口端口排出的DEF输送到第二喷射器。 第一注射器和第二注射器可以将相同量的DEF施加到后处理模块的入口中。
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公开(公告)号：US11428145B2
公开(公告)日：2022-08-30
申请号：US16245952
申请日：2019-01-11
Applicant: Caterpillar Inc.
Inventor： Ryan Rieboldt , Scott Peters , Jason Hudgens
Abstract: An insulation system for an aftertreatment system includes a first insulating element including at least one slit, and a second insulating element including a plurality of fingers extending from opposing sides of an aperture. The second insulating element is couplable to the first insulating element, and when the second insulating element is coupled to the first insulating element, the plurality of fingers overlap the at least one slit.
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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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