-
公开(公告)号：WO2022169775A1
公开(公告)日：2022-08-11
申请号：PCT/US2022/014781
申请日：2022-02-01
Applicant: CUMMINS EMISSION SOLUTIONS INC.
Inventor： CHIRUTA, Mihai , DUNNUCK, David L. , HENRY, Matthew , GATTANI, Akshat , GARDNER, Reed Tracy
IPC: B01F25/312 , F01N3/28 , F01N13/00
Abstract: An exhaust gas aftertreatment system includes an exhaust gas conduit a mixer, and a plurality of flow disrupters. The exhaust gas conduit is centered on a conduit center axis and includes an inner surface. The mixer includes a mixer body and an upstream vane plate. The upstream vane plate has a plurality of upstream vanes. At least one of the upstream vanes is coupled to the mixer body. The flow disrupters are disposed downstream of the mixer and circumferentially around the conduit center axis. Each of the flow disrupters is coupled to the exhaust gas conduit or integrally formed with the exhaust gas conduit. Each of the flow disrupters extends inwardly from the inner surface.
-
公开(公告)号：WO2021225824A1
公开(公告)日：2021-11-11
申请号：PCT/US2021/029282
申请日：2021-04-27
Applicant: CUMMINS EMISSION SOLUTIONS INC.
Inventor： JOHNSON, Ryan M. , BUECHLER, John G. , VOLMERDING, Matthew K. , ZORAN, Randy G.
Abstract: An aftertreatment system comprises a housing defining a first and a second internal volume fluidly isolated from each other. A first aftertreatment leg extends from the first to the second internal volume and includes an oxidation catalyst and a filter. The oxidation catalyst receives exhaust gas from an inlet conduit and the filter emits exhaust gas into the second internal volume. A second aftertreatment leg extends from the second to the first internal volume and includes at least one SCR catalyst disposed offset from the first aftertreatment leg. A decomposition tube is disposed offset from the SCR catalyst and the oxidation catalyst. The decomposition tube is configured to receive the exhaust gas from the second internal volume and communicate it to the inlet of the at least one SCR catalyst. A reductant injection inlet is defined proximate to the inlet of the decomposition tube for reductant insertion.
-
公开(公告)号：WO2021173357A1
公开(公告)日：2021-09-02
申请号：PCT/US2021/017551
申请日：2021-02-11
Applicant: CUMMINS EMISSION SOLUTIONS INC.
Inventor： LIU, Z. Gerald , KALYANKAR, Apoorv , MUNNANNUR, Achuth
Abstract: An aftertreatment system comprises: a housing, a SCR system disposed in the housing. A mixer is disposed upstream of the SCR system and includes: a hub, a tubular member disposed circumferentially around the hub and defining a reductant entry port, and plurality of vanes extending from the hub to the tubular member such that openings are defined between adjacent vanes. The plurality of vanes swirl the exhaust gas in a circumferential direction. A reductant injector is disposed on the housing upstream of the SCR system along a transverse axis and configured to insert a reductant into the exhaust gas flowing through the housing through the reductant entry port. The reductant is inserted at a non-zero angle with respect to the transverse axis opposite the circumferential direction to achieve virtual interception. A mixer central axis is radially offset with respect to a housing central axis of the housing.
-
公开(公告)号：WO2021113246A1
公开(公告)日：2021-06-10
申请号：PCT/US2020/062718
申请日：2020-12-01
Applicant: CUMMINS EMISSION SOLUTIONS INC.
Inventor： JOHNSON, Samuel , FRISCH, Paul T. , JANG, Peter Te-Cheng , ZORAN, Randolph G. , JOHNSON, Ryan M. , BUECHLER, John G. , ALONZO, Jim L. , NANDURU, Enoch , JOSHI, Pradnya C. , CHIRUTA, Mihai , MONTGOMERY, Isabel Valborg , DALDEGAN, Guilherme
IPC: F01N3/20
Abstract: A decomposition chamber for an exhaust gas aftertreatment system includes an inlet tube, a selective catalytic reduction (SCR) catalyst member, a mixing collector wall, a distribution cap, and a dividing tube. The inlet tube is configured to receive exhaust gas. The mixing collector wall includes a mixing assembly flow aperture. The distribution cap is coupled to the inlet tube and configured to receive the exhaust gas from the inlet tube. The dividing tube is coupled to the mixing collector wall. The dividing tube separates the distribution cap from the mixing assembly flow aperture. The dividing tube includes a first dividing tube inlet aperture that is configured to receive the exhaust gas from the distribution cap. The dividing tube outlet aperture is configured to provide the exhaust gas to the mixing assembly flow aperture.
-
公开(公告)号：WO2021112826A1
公开(公告)日：2021-06-10
申请号：PCT/US2019/064232
申请日：2019-12-03
Applicant: CUMMINS EMISSION SOLUTIONS INC.
Inventor： MITTAPALLI, Mahendra , NANDURU, Enoch , JOHNSON, Samuel , JOHNSON, Ryan M. , JAGTAP, Kartiki , JOSHI, Vinay Kumar , JOSHI, Aishwarya Pravin
IPC: F01N3/28
Abstract: A reductant delivery system includes an inlet body, an outlet body, and an outer transfer tube. The inlet body includes an inlet body coupler, an inlet body outer transfer shell, and an inlet body inner shell. The inlet body coupler surrounds an inlet body inlet that is configured to receive exhaust gas. The inlet body outer transfer shell is coupled to the inlet body coupler. The inlet body outer transfer shell includes an inlet body outer transfer shell inner surface and an inlet body outer transfer shell outlet. The inlet body outer transfer shell outlet extends through the inlet body outer transfer shell inner surface. The inlet body inner shell includes an inlet body inner shell first flange, an inlet body inner shell second flange, and an inlet body inner shell wall. The inlet body inner shell first flange is coupled to the inlet body outer transfer shell inner surface.
-
Patent Agency Ranking
公开(公告)号：WO2021091561A1
公开(公告)日：2021-05-14
申请号：PCT/US2019/060258
申请日：2019-11-07
Applicant: CUMMINS EMISSION SOLUTIONS INC.
Inventor： VAISHAMPAYAN, Advait Sunil
Abstract: An outlet assembly for an aftertreatment system comprises an outlet conduit configured to receive an exhaust gas from the aftertreatment system. The outlet conduit defines a first aperture through a sidewall thereof. An outlet passage is disposed within the outlet conduit. The outlet passage comprises a first end facing an upstream side of the outlet conduit and a second end located downstream from the first end. The second end is fluidly coupled to the first aperture. A hole is defined through an outlet passage sidewall at a radial location that is proximate to the sidewall of the outlet conduit. The hole is configured to allow a sensor to be inserted therethrough into a flow path defined by the outlet passage. The outlet passage is configured to receive a portion of the exhaust gas from the outlet conduit such that the sensor is exposed to the portion of the exhaust gas.
-
公开(公告)号：WO2021050356A1
公开(公告)日：2021-03-18
申请号：PCT/US2020/049231
申请日：2020-09-03
Applicant: CUMMINS EMISSION SOLUTIONS INC.
Inventor： PUNDE, Shirish S. , DABHOIWALA, Rayomand , REYNOLDS, James Nicholas
Abstract: An aftertreatment system for treating an exhaust gas comprises an exhaust conduit, a preheating oxidation catalyst, a primary oxidation catalyst disposed downstream of the preheating oxidation catalyst, and a selective catalytic reduction system disposed in the exhaust conduit downstream of the primary oxidation catalyst. A controller is configured to determine a temperature of an exhaust gas at an inlet of the selective catalytic reduction system. In response to the temperature being below a threshold temperature, the controller generates a hydrocarbon insertion signal configured to cause hydrocarbons to be inserted into or upstream of the preheating oxidation catalyst so as to increase a temperature of the exhaust gas to above the threshold temperature.
-
公开(公告)号：WO2020236158A1
公开(公告)日：2020-11-26
申请号：PCT/US2019/033354
申请日：2019-05-21
Applicant: CUMMINS EMISSION SOLUTIONS INC.
Inventor： RINGSTAD, John , CHRISTIANSON, Peter
Abstract: A sampling assembly for an exhaust gas aftertreatment system includes a body layer, an outer bowl, a first sampler, and an inner bowl. The body layer defines a cylindrical passage. The outer bowl is coupled to the body layer. The first sampler extends circumferentially along the body layer to the outer bowl. The first sampler includes a first sampler channel and a first sampler aperture. The first sampler channel is configured to provide exhaust gas into the outer bowl. The first sampler aperture is configured to receive the exhaust gas from the cylindrical passage and provide the exhaust gas into the first sampler channel. The inner bowl is disposed at least partially within the outer bowl and configured to receive the exhaust gas from the outer bowl and provide the exhaust gas into the cylindrical passage.
-
9.发明申请
公开(公告)号：WO2020205112A1
公开(公告)日：2020-10-08
申请号：PCT/US2020/020320
申请日：2020-02-28
Applicant: CUMMINS EMISSION SOLUTIONS INC.
Inventor： KUMRA, Anurag , GONG, Jinqian , DASARI, Arun Kumar
Abstract: An aftertreatment system comprises a selective catalytic reduction (SCR) unit, a reductant injector configured to insert reductant into the aftertreatment system, a first NO x sensor configured to measure an amount of NO x gases at a location upstream of the reductant injector, and a second NO x sensor configured to measure an amount of NO x gases at a location downstream of the SCR unit. A controller is programmed to estimate an amount of reductant deposits formed in the aftertreatment system based on at least the amount of NO x gases measured at the location upstream of the reductant injector, the amount of NO x gases measured at the location downstream of the SCR unit, and an amount of reductant that has been inserted into the aftertreatment system. The controller adjusts an amount of reductant to be inserted into the aftertreatment system based on the estimated amount of reductant deposits formed in the aftertreatment system.
-
公开(公告)号：WO2020154108A1
公开(公告)日：2020-07-30
申请号：PCT/US2020/013033
申请日：2020-01-10
Applicant: CUMMINS EMISSION SOLUTIONS INC.
Inventor： GONG, Jinqian , DASARI, Arun Kumar , SHARMA, Gautam
Abstract: An exhaust aftertreatment system includes a catalyst, an exhaust conduit system, a first sensor, a second sensor, a reductant pump, a dosing module, and a reductant delivery system controller. The exhaust conduit system is coupled to the catalyst. The first sensor is coupled to the exhaust conduit system upstream of the catalyst and configured to obtain a current first measurement upstream of the catalyst. The second sensor is coupled to the exhaust conduit system downstream of the catalyst and configured to obtain a current second measurement downstream of the catalyst. The reductant pump is configured to draw reductant from a reductant source. The dosing module is fluidly coupled to the reductant pump and configured to selectively provide the reductant from the reductant pump into the exhaust conduit system upstream of the catalyst. The reductant delivery system controller is communicable with the first sensor, the second sensor, the reductant pump, and the dosing module.
-
-
-
-
-
-
-
-
-
Search Results
123
records
(took 0.026 seconds)
