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公开(公告)号：US20210063279A1
公开(公告)日：2021-03-04
申请号：US17002464
申请日：2020-08-25
摘要： A liquid protection shield for a sensor probe in an exhaust system is provided. The liquid protection shield includes a sensor tip housing portion having a substantially cylindrical shape and multiple apertures formed through a sidewall of the sensor tip housing portion. The liquid protection shield further includes a shoulder portion integrally coupled to the sensor tip housing portion and having a substantially cylindrical shape. The sensor tip housing portion and the shoulder portion collectively define a central passage for the sensor probe.
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公开(公告)号：US10927742B2
公开(公告)日：2021-02-23
申请号：US16978142
申请日：2019-03-07
发明人： Kern Lik Tan , Joe V. Hill , Deepu Chandy , Vikram Sundararajan , Vinayak Mandavkar , Hemant Sindkar
摘要： A controller configured to be operatively coupled to a reductant insertion assembly comprising a first pump for inserting a reductant into a selective catalytic reduction system, is programmed to set an insertion interval timer for the first insertion interval in response to receiving a first insertion command. The controller starts the insertion interval timer, records an elapsed time period from the start of the insertion interval timer, and activates the first pump when the timer starts. The controller receives a second insertion command comprising information for activating the first pump for a second duty cycle for second insertion intervals different than the first insertion interval. If the second insertion interval is smaller than the recorded elapsed time period, the insertion interval timer is set for the second insertion interval, the insertion interval timer is started, and if not already activated, the first pump is activated for the second duty cycle.
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公开(公告)号：US10927739B2
公开(公告)日：2021-02-23
申请号：US15846860
申请日：2017-12-19
摘要： An injector includes a needle and a body. The needle is configured to receive fluid from a fluid supply and operable between a first position, in which the fluid is not provided to a target, and a second position, in which the fluid is provided to the target. The needle includes a first needle bore, a second needle bore, and a first connector. The first needle bore is configured to receive fluid from the fluid supply. The second needle bore is aligned with the first needle bore and configured to provide fluid to the fluid supply. The first connector is in fluid communication with the second needle bore. The body includes an end, a first body bore, and a second body bore. The first body bore is configured to receive the needle. The second body bore is positioned to be contiguous with the end.
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公开(公告)号：US20210003060A1
公开(公告)日：2021-01-07
申请号：US16975982
申请日：2018-03-05
发明人： Sriram Srinivasan
摘要： An exhaust filtration system comprises a first pressure sensor and a second pressure sensor, each configured to measure pressure in the exhaust filtration system under low-flow conditions. The exhaust filtration system comprises a third pressure sensor and a fourth pressure sensor, each configured to measure pressure in the exhaust filtration system under high-flow conditions. A flow rate of exhaust gas flowing through the exhaust filtration system is periodically determined. When the flow rate is below a predetermined flow rate threshold, the first and second pressure sensors are used to measure pressure in the exhaust filtration system, and a soot load of the exhaust filtration system is estimated using the pressure measured by the first and second pressure sensors. When the flow rate is above the predetermined flow rate threshold, the third and fourth pressure sensors are used to measure pressure in the exhaust filtration system and a soot load of the exhaust filtration system is estimated using the pressure measured by the third and fourth pressure sensors.
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公开(公告)号：US10830117B2
公开(公告)日：2020-11-10
申请号：US15539010
申请日：2015-12-22
摘要： An exhaust aftertreatment assembly and method of manufacturing and operating an exhaust aftertreatment assembly. An exhaust aftertreatment assembly includes an aftertreatment housing and an inlet conduit coupled to the aftertreatment housing at an inlet port so as to transfer exhaust gas into the aftertreatment housing. An inlet chamber is positioned in the aftertreatment housing. The inlet chamber is fluidly coupled to the inlet port of the aftertreatment housing to receive the exhaust gas from the inlet conduit.
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46.发明申请公开(公告)号：US20200347766A1
公开(公告)日：2020-11-05
申请号：US16931006
申请日：2020-07-16
IPC分类号： F01N3/20
摘要： A reductant insertion assembly for inserting a reductant into an aftertreatment system includes: a pump assembly comprising a pump that includes a pump outlet; a first metering assembly fluidly coupled to the pump outlet, the first metering assembly comprising a first metering manifold; and a second metering assembly fluidly coupled in series with the pump, the second metering assembly being a separate structure from the first metering assembly and comprising a second metering manifold removably coupled to the first metering manifold. The pump is configured to pump the reductant to the first metering assembly, and to the second metering assembly via the first metering assembly.
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公开(公告)号：US10786783B2
公开(公告)日：2020-09-29
申请号：US16750668
申请日：2020-01-23
发明人： Randolph G. Zoran , Ryan M. Johnson , David M. Sarcona , A. Carl McDonald, Jr. , Kenneth R. Federle , John G. Buechler , Scott Lubenow
摘要： A selective catalytic reduction system may include a single housing defining a single centerline axis. The selective catalytic reduction system may also include a diesel particulate filter disposed within the single housing and having a DPF center axis aligned with the single centerline axis. The selective catalytic reduction system may also include an SCR catalyst disposed within the single housing and having a center axis aligned with the single centerline axis. In some implementations, the diesel particulate filter may include one or more SiC filters. In some implementations, the SCR catalyst may include one or more extruded SCR catalysts.
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公开(公告)号：US20200157996A1
公开(公告)日：2020-05-21
申请号：US16629280
申请日：2018-07-17
摘要： An aftertreatment component includes an aftertreatment housing. The aftertreatment housing has a first surface positioned so as to be directly impinged by diesel exhaust fluid injected into the aftertreatment housing. The first surface is a polished surface.
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公开(公告)号：US10648393B2
公开(公告)日：2020-05-12
申请号：US15738029
申请日：2016-06-27
摘要： Implementations described herein relate to features for a single module aftertreatment system. The single aftertreatment system includes a casing, a catalyst within the casing, and an outer body attached to a portion of the casing with a flat mounting zone on the outer body. The outer body includes a mounting bracket welded to the flat mounting zone. The flat mounting zone is separated from the casing so as to form an air gap between the flat mounting zone of the outer body and the casing. The outer body includes a beaded portion adjacent the flat mounting zone. The outer body includes an inner diameter portion, and the outer body is attached to a portion of the casing by a weld joint between the inner diameter portion and the portion of the casing.
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50.发明申请公开(公告)号：US20200072106A1
公开(公告)日：2020-03-05
申请号：US16467434
申请日：2017-12-06
发明人： Samuel Johnson , Nassim Khaled , Patrick C. Hudson
摘要： A system for controlling reductant spray momentum for a target spray distribution includes an exhaust system having an exhaust conduit with exhaust flowing therethrough, a reductant injection system for injecting reductant into the exhaust flowing through the exhaust system based on one or more injection parameters, a reductant supply system for supplying reductant to the reductant injection system based on one or more supply parameters, and a controller. The controller is configured to access current vehicle, engine, exhaust, or reductant condition parameters, determine one or more control parameters based on a control model and the accessed current vehicle, engine, exhaust, or reductant condition parameters, and modify a value of the one or more injection parameters or the one or more supply parameters to control the reductant spray.
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