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公开(公告)号：US11708779B2
公开(公告)日：2023-07-25
申请号：US17281317
申请日：2019-08-29
CPC分类号： F01N3/2066 , B01D53/90 , B01D53/9431 , B01J19/0033 , B01J19/20 , B01D2251/2067 , B01J2219/00058 , B01J2219/00162 , F01N3/0293 , F01N3/206 , F01N2250/12 , F01N2570/14 , F01N2610/02 , F01N2610/10 , F01N2610/12 , F01N2610/14 , F01N2610/1406 , F01N2610/1453 , F01N2900/04 , F01N2900/1406 , F01N2900/18 , F01N2900/1824
摘要： A reductant insertion system for an after treatment system configured to decompose constituents of an exhaust gas, includes: a dry reductant tank configured to contain a dry reductant; a reductant delivery line configured to operatively couple the dry reductant tank to the after treatment system for delivery of the dry reductant to the after treatment system; and a pressurized gas source configured to communicate the dry reductant to the after treatment system through the reductant delivery line using pressurized gas.
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公开(公告)号：US20230212972A1
公开(公告)日：2023-07-06
申请号：US17924872
申请日：2021-04-20
发明人： Andreas BRUHN , Jens BRUNNER , Markus WOLF
CPC分类号： F01N11/00 , F01N3/2066 , G01F25/24 , F01N2550/05 , F01N2610/02 , F01N2610/1453 , F01N2610/146 , F01N2900/1808 , F01N2900/1822
摘要： A method for checking operability of a first metering unit includes sending a control signal to a second metering unit to dispense a second quantity; comparing the quantity dispensed with the second quantity; sending a control signal to a second metering unit to introduce a third quantity; detecting the pressure drop caused by the introduction of the third quantity; sending a control signal to the first metering unit to introduce a first quantity; detecting the pressure drop caused by executing the control signal to introduce the first quantity; and ascertaining that the first metering unit is not functioning correctly if a difference between the pressure drop detected as a result of the execution of the control signal to introduce the first quantity and the pressure drop detected as a result of the execution of the control signal to introduce the third quantity is above a threshold.
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公开(公告)号：US11691120B1
公开(公告)日：2023-07-04
申请号：US17556692
申请日：2021-12-20
CPC分类号： B01J19/26 , B01D53/944 , B01D53/9431 , B01J19/1862 , F01N3/2066 , B01J2219/1943 , B01J2219/1946 , F01N2240/20 , F01N2260/18 , F01N2330/38 , F01N2610/02 , F01N2610/08 , F01N2610/146 , F01N2610/1453 , F01N2610/1493 , F01N2900/14 , F01N2900/1806 , F01N2900/1824
摘要： An exhaust gas aftertreatment system includes a housing assembly and a reductant delivery system. The housing assembly includes an upstream housing, a first inlet tube, a second inlet tube, and a mixing housing. The first inlet tube is coupled to the upstream housing and configured to receive a first portion of exhaust gas from the upstream housing. The second inlet tube is coupled to the upstream housing and configured to receive a second portion of the exhaust gas from the upstream housing. The mixing housing is coupled to the first inlet tube and the second inlet tube. The mixing housing is configured to receive the first portion of the exhaust gas from the first inlet tube and receive the second portion of the exhaust gas from the second inlet tube. The mixing housing is separated from the upstream housing by the first inlet tube and the second inlet tube.
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公开(公告)号：US20230191358A1
公开(公告)日：2023-06-22
申请号：US17556692
申请日：2021-12-20
CPC分类号： B01J19/26 , F01N3/2066 , B01J19/1862 , B01D53/944 , B01D53/9431 , F01N2610/1453 , B01J2219/1943 , B01J2219/1946
摘要： An exhaust gas aftertreatment system includes a housing assembly and a reductant delivery system. The housing assembly includes an upstream housing, a first inlet tube, a second inlet tube, and a mixing housing. The first inlet tube is coupled to the upstream housing and configured to receive a first portion of exhaust gas from the upstream housing. The second inlet tube is coupled to the upstream housing and configured to receive a second portion of the exhaust gas from the upstream housing. The mixing housing is coupled to the first inlet tube and the second inlet tube. The mixing housing is configured to receive the first portion of the exhaust gas from the first inlet tube and receive the second portion of the exhaust gas from the second inlet tube. The mixing housing is separated from the upstream housing by the first inlet tube and the second inlet tube.
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35.发明授权公开(公告)号：US11674425B2
公开(公告)日：2023-06-13
申请号：US17220999
申请日：2021-04-02
申请人： NGK INSULATORS, LTD.
发明人： Katsumi Saiki , Yukinari Shibagaki
CPC分类号： F01N3/2073 , F01N3/2013 , F01N3/2828 , F01N3/2066 , F01N2240/25 , F01N2330/06 , F01N2610/02 , F01N2610/1453
摘要： A reductant injecting device includes: a honeycomb structure comprising: a pillar shaped honeycomb structure portion having a partition wall that defines a plurality of cells each extending from a fluid inflow end face to a fluid outflow end face; and at least one pair of electrode portions arranged on a side surface of the honeycomb structure portion; an inner cylinder being configured to house the honeycomb structure; a urea sprayer arranged at one end of the inner cylinder; and an outer cylinder arranged on an outer peripheral side of the inner cylinder, the outer cylinder being spaced apart from the inner cylinder. A flow path through which the carrier gas passes is formed between the inner cylinder and the outer cylinder.
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公开(公告)号：US20230173431A1
公开(公告)日：2023-06-08
申请号：US17922763
申请日：2021-05-05
CPC分类号： B01D53/18 , B63H21/32 , B01D53/504 , F01N3/085 , B01D2252/1035 , B01D2258/0283 , B01D2259/4566 , F01N2570/04 , F01N2590/02 , F01N2610/1453 , F01N2610/01 , F01N2610/1473
摘要： A wet inline scrubber with a side inlet using alkali scrubber fluid for reducing the amount of SOx in the exhaust gas of engines of a marine vessel, including a vertically extending exhaust gas reaction tube, lower and upper scrubbing chamber including alkali scrubber fluid injectors to scrub the exhaust gas, and a used scrubber fluid drain. The lower chamber has an exhaust gas outlet with a central opening arranged to let the exhaust gas pass through and a body extending from the central opening up to an outer wall thereof which is in contact with the inner wall of the exhaust gas reaction tube. Between the body and the inner wall, slit-shaped openings allow scrubber fluid to flow from the upper scrubbing chamber to the lower scrubbing chamber and used scrubber fluid to flow over the inlet side for the exhaust gas in the lower scrubbing chamber.
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公开(公告)号：US20190249583A1
公开(公告)日：2019-08-15
申请号：US16395472
申请日：2019-04-26
发明人： Korneel De Rudder , Corine Chauvin
CPC分类号： F01N3/2066 , B01F3/04049 , B01F5/0062 , B01F2005/0091 , F01N3/36 , F01N13/08 , F01N2470/02 , F01N2470/18 , F01N2610/02 , F01N2610/1453 , Y02T10/24
摘要： A dosing and mixing arrangement includes a mixing tube having a constant diameter along its length. At least a first portion of the mixing tube includes a plurality of apertures. The arrangement also includes a swirl structure for causing exhaust flow to swirl outside of the first portion of the mixing tube in one direction along a flow path that extends at least 270 degrees around a central axis of the mixing tube. The arrangement is configured such that the exhaust enters an interior of the mixing tube through the apertures as the exhaust swirls along the flow path. The exhaust entering the interior of the mixing tube through the apertures has a tangential component that causes the exhaust to swirl around the central axis within the interior of the mixing tube. The arrangement also includes a doser for dispensing a reactant into the interior of the mixing tube.
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公开(公告)号：US20190234273A1
公开(公告)日：2019-08-01
申请号：US16261096
申请日：2019-01-29
IPC分类号： F01N3/20
CPC分类号： F01N3/2066 , F01N2610/02 , F01N2610/1453 , F01N2610/1486
摘要： A fluid injector includes a fluid inlet, a fluid outlet, and a fluid path from the fluid inlet to the fluid outlet. An actuator unit is disposed within the fluid injector. A valve assembly operatively couples to the actuator unit. A spacer member is disposed between a downstream end portion of the actuator unit and a portion of the valve assembly, the spacer member constructed from a compressible, resilient material so as to compress due to expansion forces from fluid in the fluid injector freezing, and to expand when frozen fluid in the fluid injector melts. The spacer member occupies a space in the fluid path of the fluid injector.
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39.发明申请公开(公告)号：US20190128165A1
公开(公告)日：2019-05-02
申请号：US15799212
申请日：2017-10-31
发明人： Vikram Sundararajan , Joe V. Hill
IPC分类号： F01N3/20
CPC分类号： F01N3/208 , F01N3/2066 , F01N9/00 , F01N11/00 , F01N2240/40 , F01N2560/06 , F01N2610/02 , F01N2610/1453 , F01N2610/146 , F01N2900/1821
摘要： A controller includes a switching delay circuit structured to determine an open delay time and a close delay time for a reductant injector, each based on battery voltage and reductant injector coil temperature. A dosing circuit is structured to determine an open time that the armature pin must be in the fully open position so as to cause the injector to inject a first quantity of reductant. An actuation time is determined based on each of the open time, the open delay time, and the close delay time. The actuation time relates to a time that the coil must be energized so as to cause the injector to inject the first quantity of reductant. A switching command signal is transmitted to the injector to energize the coil for the calculated actuation time so as to cause the injector to inject the first quantity of reductant into an exhaust gas stream.
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公开(公告)号：US20190070558A1
公开(公告)日：2019-03-07
申请号：US16113815
申请日：2018-08-27
申请人： Randal A. Goffe
发明人： Randal A. Goffe
CPC分类号： B01D53/9477 , B01D53/9431 , B01D53/944 , B01D53/9495 , B01D2255/904 , F01N3/2066 , F01N3/2892 , F01N2240/20 , F01N2610/02 , F01N2610/1453 , Y02T10/24
摘要： A thermally integrated catalyst aftertreatment exhaust system includes a flow channel that directs diesel exhaust through a diesel oxidation catalyst unit that includes a diesel oxidation catalyst, by a doser that introduces DEF into the diesel exhaust, through a mixing chamber that includes a static metallic mixer coated with a DEF hydrolysis catalyst, and through an SCR unit that includes an SCR catalyst. The diesel oxidation catalyst converts a portion of diesel exhaust into water, carbon dioxide, or nitrogen dioxide. The DEF hydrolysis catalyst facilitates hydrolysis of the mixed DEF and diesel exhaust. The SCR catalyst facilitates reduction of NOx in the diesel exhaust. A first portion of the flow channel is in direct thermal contact with a second portion of the flow channel that houses the SCR unit such that heat from the diesel exhaust before the diesel exhaust reaches the doser is passed to the SCR unit.
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