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31.发明申请公开(公告)号：US20220018274A1
公开(公告)日：2022-01-20
申请号：US17472984
申请日：2021-09-13
发明人： Lakshmanan Arunachalam , Christopher A. Thompson , Pradnya Pranav Ballal , Elliot Dilger , Nathan Hansen , Taren DeHart , Mahendra Mittapalli , Aaron Riedel
摘要： A doser mounting bracket for coupling a doser to an exhaust gas aftertreatment system component having a sidewall and an exhaust gas aftertreatment system component opening includes a lower surface, an engagement wall, a central structure, an upper surface, and an attachment structure. The lower surface is configured to be held in a position opposing the sidewall. The engagement wall extends from the lower surface. The central structure has an opening that extends therethrough and includes a centering structure that extends from the lower surface and is configured to be received within the exhaust gas aftertreatment system component opening. The attachment structure extends from the upper surface and is configured to be coupled to the doser. The engagement wall is configured to separate the lower surface from the sidewall when the engagement wall interfaces with the sidewall such that a pocket is formed between the engagement wall, the centering structure, and the lower surface.
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公开(公告)号：US11215100B2
公开(公告)日：2022-01-04
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：US20210310394A1
公开(公告)日：2021-10-07
申请号：US17291205
申请日：2019-11-05
摘要： An exhaust gas aftertreatment system includes a decomposition reactor, an injector, and a processor. The decomposition reactor includes a body, an impingement structure, and a heater. Exhaust gas is flowable through the body. The body includes an inlet and an outlet. The inlet is configured to receive the exhaust gas at a first temperature. The outlet is configured to selectively expel the exhaust gas at a second temperature greater than the first temperature. The impingement structure is disposed within the body between the inlet and the outlet. The impingement structure extends into the body and is located such that the exhaust gas flowing through the body impinges on the impingement structure. The heater is coupled to the impingement structure and configured to selectively heat the impingement structure. The injector is configured to inject reductant into the body. The processor is programmed to control the heater.
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公开(公告)号：US20210310393A1
公开(公告)日：2021-10-07
申请号：US17350262
申请日：2021-06-17
发明人： Samuel Johnson , John G. Buechler , Matthew K. Volmerding , Jacob W. Brown , Gaurav Hemant Pandit
摘要： A lance injector assembly for an exhaust component includes: a shaft configured to extend into an exhaust conduit of the exhaust component, the shaft being hollow so as to define a channel therethrough, wherein an opening is defined in a wall of the shaft proximate to a second end of the shaft that is opposite the first end; a cap coupled to a first end of the shaft; and a supply line disposed within the channel defined by the shaft, wherein a nozzle is disposed at a downstream end of the supply line, the nozzle being fluidly coupled to the shaft around the opening such that reductant is able to flow from the nozzle through the opening and into an exhaust gas flowing through the exhaust conduit. Air is present in the space between the supply line and the wall of the shaft, the air inhibiting heat transfer to the supply line.
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公开(公告)号：US11105245B2
公开(公告)日：2021-08-31
申请号：US16468526
申请日：2017-12-11
发明人： Varun R. Rajagopal , Farshad Farid , Jinqian Gong
摘要： A system for diagnosing an improper reductant concentration includes: a selective catalytic reduction (SCR) catalyst unit, a doser configured to dose reductant into a chamber of the SCR catalyst unit, a reductant concentration sensor, and a controller. In some embodiments, the controller is configured to: direct the doser to dose the reductant into the chamber of the SCR catalyst unit, based on information received from the reductant concentration sensor, determine a reductant concentration level in the chamber of the SCR catalyst unit, compare a measured system-out NOx value to at least one benchmark value corresponding to the determined reductant concentration level, and determine a status of the reductant dosed by the doser based on the comparison of the measured system-out NOx value to the at least one benchmark value.
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公开(公告)号：US20210215081A1
公开(公告)日：2021-07-15
申请号：US17220169
申请日：2021-04-01
发明人： Kevin Gudorf
摘要： An aftertreatment system includes an exhaust reductant tank configured to store an exhaust reductant. A filter is fluidically coupled to the exhaust reductant tank. The aftertreatment system includes a hydrocarbon detection device configured to indicate the presence of a hydrocarbon in the exhaust reductant. A catalyst is included in the system and configured to treat the exhaust reductant flowing through the system. The hydrocarbon detection device can include a hydrophobic paper, and can be disposed in the filter.
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公开(公告)号：US11040308B2
公开(公告)日：2021-06-22
申请号：US16028081
申请日：2018-07-05
发明人： Neha Verma , Nicholas Blodgett , Colin L. Norris , Taren DeHart
摘要： A reductant insertion system for inserting reductant into an aftertreatment system via a reductant injector comprises a reductant insertion assembly comprising a pump operatively coupled to the reductant injector via a reductant delivery line. A compressed gas source is operatively coupled to the reductant injector and provides a compressed gas to the reductant injector for gas assisted delivery of the reductant. A controller is operatively coupled to the compressed gas source and the reductant insertion assembly and configured to determine whether there is a reductant demand for the reductant. In response to there being no reductant demand, the controller stops the pump and activates the compressed gas source for a predetermined time so as to provide compressed gas to the reductant injector at a pressure sufficient to force reductant contained in the reductant injector upstream towards the reductant insertion assembly via the reductant delivery line while the pump is stopped.
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公开(公告)号：US20210131329A1
公开(公告)日：2021-05-06
申请号：US16480769
申请日：2017-01-27
发明人： Apoorv KALYANKAR , Daniel MACIEJEWSKI , John G. BUECHLER , Ryan M. JOHNSON , Randolph G. ZORAN , Achuth MUNNANNUR
摘要： An aftertreatment component includes an inlet connector tube, an outlet connector tube, a chamber, a flow dissipater, and a substrate. The inlet connector tube receives exhaust gasses. The chamber is between the inlet connector tube and the outlet connector tube. The flow dissipater is positioned around the inlet connector tube and within the chamber. The flow dissipater receives the exhaust gasses from the inlet connector tube and includes a plurality of perforations. The plurality of perforations defines an open area of the flow dissipater. The open area of the flow dissipater is greatest proximate to the inlet connector tube and progressively decreasing proximate to the outlet connector tube. The substrate is positioned within the chamber and receives the exhaust gasses from the flow dissipater and provides the treated exhaust gasses to the outlet connector tube. The exhaust gases are expelled through the flow dissipater via the plurality of perforations.
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公开(公告)号：US10989093B2
公开(公告)日：2021-04-27
申请号：US16325673
申请日：2017-08-14
发明人： Yinghuan Lei , Todd A. Corbet , Robert Edward Cochran , Sergio M. Hernandez-Gonzalez , Uma Vajapeyazula , Weichao Wang , Marc A Greca , Joseph M. Brault
摘要： Systems, methods, and apparatuses for adaptive regeneration of aftertreatment system components. The system may include an aftertreatment system and a controller. The controller is configured to access one or more parameters indicative of an ambient condition, determine a regeneration type of a regeneration process for a component of the aftertreatment system, determine an application in condition, and modify a parameter for the regeneration process for the component of the aftertreatment system. In some instances, the controller initiates the regeneration process. In some instances, the one or more parameters include an ambient air temperature, a reductant tank temperature, or a particulate matter sensor temperature. In some instances, the modified parameter includes a target regeneration temperature, a regeneration duration, a dwell time between regeneration process, a threshold value for the regeneration process, or a minimum regeneration temperature.
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公开(公告)号：US20210079825A1
公开(公告)日：2021-03-18
申请号：US16642714
申请日：2018-08-29
IPC分类号： F01N3/20 , B01D53/94 , B01D35/147 , B01D29/66
摘要： An inline reductant filter assembly includes a filter housing, a filter media, and one or more valves. The filter housing is fluidly coupled to an upstream portion of a reductant line and a downstream portion of the reductant line. The filter media is positioned in the filter housing. The one or more valves are selectively movable from a first position to a second position. In the first position, the one or more valves permit fluid to flow along a first fluid flow path from the upstream portion of the reductant line, through the filter media, to the downstream portion of the reductant line. In the second position, the one or more valves prevent fluid from flowing along the first fluid flow path through the filter media.
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