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公开(公告)号：US12234760B2
公开(公告)日：2025-02-25
申请号：US17783524
申请日：2020-12-08
Applicant: Vitesco Technologies GmbH
Inventor： Peter Hirth , Rolf Brück , Holger Stock
Abstract: In a device for the aftertreatment of exhaust gases from an emission source, in particular an internal combustion engine, with an exhaust tract through which an exhaust gas can flow in a direction of flow, with at least one catalytic converter, the catalytic converter having a ceramic honeycomb body has: a catalytically active surface coating, and with an electrically heatable heater, the heater having a metallic electrical conductor, the honeycomb body further having a plurality of flow channels which can be flowed through from a gas inlet side to a gas outlet side, wherein the conductor is integrated in the ceramic honeycomb body, and is arranged downstream of the gas inlet side and upstream of the gas outlet side, as viewed in the direction of flow.
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公开(公告)号：US20250061754A1
公开(公告)日：2025-02-20
申请号：US18719453
申请日：2022-12-21
Applicant: ERRECINQUE S.R.L.
Inventor： Mario Incardona , Matteo Bolzoni
Abstract: A method for monitoring a thermal degradation state of a reducing solution contained within a reservoir includes the steps of providing a first functional relationship associating a quantity indicative of a temperature of the solution with a first parameter associated with the thermal degradation state, acquiring the quantity, and determining the first parameter as a function of the acquired quantity via the first functional relationship, wherein the degradation state is monitored based on the first determined parameter. The first functional relationship comprises an increasing function of a product between the running time and an increasing coefficient with said quantity of the temperature.
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公开(公告)号：US20250052183A1
公开(公告)日：2025-02-13
申请号：US18723003
申请日：2022-12-20
Applicant: DAIMLER TRUCK AG
Inventor： Jens KIENZLE , Christoph SITTER , Sinisa KONTIN , Moritz WIED , Thomas BOLDT , Ralf WANDEL
IPC: F01N3/28 , B01F23/213 , B01F25/10 , B01F25/314 , B01F25/421 , B01F35/90 , B01F35/92 , F01N3/20
Abstract: The invention relates to a chamber mixer (10) for an exhaust after-treatment system of a motor vehicle, wherein a first fluid (12) can flow through the internal volume (18) of the chamber mixer in a through-flow direction (26), said internal volume being delimited by a housing (16), wherein at least one housing side of the housing (16) is double-walled and has an outer wall (30) and an inner wall (32) which divides the internal volume (18) into an inner chamber (34) and an outer chamber (36), wherein the fluid flowing in through an inlet opening (22) can be separated into a main flow (38) flowing through the inner chamber (34) and an auxiliary flow (40) flowing through the outer chamber (36), wherein the main flow (38) can be acted upon by means of a flow device (48) with a double swirl (50) and with a fluid introduction device (56) with an introduction end (58) which is arranged in the outer chamber (36) and via which a second fluid (14) can be injected into the inner chamber (34) through an introduction opening (60) in the inner wall (32).
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公开(公告)号：US12215616B2
公开(公告)日：2025-02-04
申请号：US18657835
申请日：2024-05-08
Applicant: Caterpillar Inc.
Inventor： Joshua Lynn Ratts , Abhay Gupta , Arnold Myoungjin Kim , Eric Lee Schroeder , Kenth I Svensson
Abstract: An internal combustion engine system is described herein. The system uses an additive added to the exhaust of the internal combustion engine to maintain a range of NO2 to NO within a range that provides for a fast SCR reaction in a selective catalyst reduction unit. The additive and the exhaust enter a diesel oxidation catalyst (DOC), whereby the NO2 undergoes a two-stage process. In the first stage, the NO2 from the exhaust is adsorbed onto the precious metal catalyst of the DOC and an atomic oxygen is removed from the NO2, reducing the NO2 to NO. Because of the higher reactivity of the additive, the additive scavenges a portion of the atomic oxygen from the catalyst. During the second stage of the DOC process, the NO is oxidized over the catalyst to form NO2.
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公开(公告)号：US12214657B2
公开(公告)日：2025-02-04
申请号：US17969975
申请日：2022-10-20
Applicant: YANMAR POWER TECHNOLOGY CO., LTD.
Inventor： Yoshiaki Kurokawa
IPC: B60K15/063 , F01N3/20 , B60K13/04
Abstract: A tractor including: a traveling body having an engine; a post-processing device configured to purify exhaust gas of the engine; and a reductant tank configured to store a reductant to be supplied to the post-processing device. A pair of left and right fuel tanks are arranged respectively on left and right sides of a longitudinally midway portion of the traveling body. A tank-accommodation recess for accommodating a reductant tank is formed at a lower-front portion of one of the left and right fuel tanks. While the reductant tank is accommodated in the tank-accommodation recess, an upper front portion of the fuel tank and the reductant tank are aligned up and down.
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Patent Agency Ranking
公开(公告)号：US20250035024A1
公开(公告)日：2025-01-30
申请号：US18710232
申请日：2022-11-18
Applicant: Scania CV AB
Inventor： Christer LUNDBERG
Abstract: A control device and a method for deriving an engine-out NOx concentration in an exhaust system comprising a SCR catalyst, a dosing device for dosing a reductant, a first NOx sensor arranged downstream of the dosing device and a second NOx sensor arranged downstream the SCR catalyst. The method comprises deriving engine-out NOx concentration based on a first concentration reading obtained from the first NOx sensor and a second concentration reading obtained from the second NOx sensor, said first concentration reading being obtained while the dosing device is in operation. An exhaust system as well as a vehicle comprising the control device are also provided.
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公开(公告)号：US12209521B2
公开(公告)日：2025-01-28
申请号：US18673920
申请日：2024-05-24
Applicant: Cummins Emission Solutions Inc.
Inventor： Masoud Ziabakhsh Deilami , Joe V. Hill , Jens Honeck , Ralf Rohrmueller
IPC: F01N3/20
Abstract: An exhaust aftertreatment system includes a first decomposition chamber that receives exhaust and treatment fluid, a first dosing module that includes a first injector that injects the treatment fluid into the first decomposition chamber, and a second decomposition chamber disposed downstream of the first decomposition chamber and that receives the exhaust and the treatment fluid from the first decomposition chamber. The exhaust aftertreatment system further includes a second dosing module that includes a second injector that injects the treatment fluid into the second decomposition chamber and a pressure sensor that generates a pressure signal based on a pressure of the treatment fluid in the second dosing module. The exhaust aftertreatment system further includes a variable resistor selectively switchable between multiple resistances.
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公开(公告)号：US12208361B2
公开(公告)日：2025-01-28
申请号：US18028800
申请日：2021-09-29
Applicant: BASF MOBILE EMISSIONS CATALYSTS LLC
Inventor： Gerd Grubert , Alfred Punke , Arne Tobias Niggebaum , Sven Jare Lohmeier , Emre Emmez , Torsten Neubauer , Jeffrey B. Hoke , Shiang Sung
IPC: B01D53/94 , B01J23/34 , B01J27/185 , B01J29/67 , B01J29/74 , B01J35/00 , F01N3/08 , F01N3/10 , F01N3/20 , F01N3/28 , F01N13/00
Abstract: The present invention relates a system for the treatment of an exhaust gas of a diesel combustion engine, said system comprising a specific NOx adsorber component, a diesel oxidation catalyst (DOC) component, a selective catalytic reduction (SCR) component, a gas heating component, and a reductant injector, wherein in said system, the specific NOx adsorber component is arranged upstream of the gas heating component, the reductant injector is arranged up-stream of the SCR component, the gas heating component is arranged upstream of the reductant injector, the DOC component is arranged upstream of the reductant injector, and the DOC component and the gas heating component are directly consecutive components. Further, the present invention relates a process for preparing such a system and use thereof.
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公开(公告)号：US20250029753A1
公开(公告)日：2025-01-23
申请号：US18715323
申请日：2022-12-01
Applicant: Vitesco Technologies GmbH
Inventor： Rolf BRÜCK , Jan HODGSON , Peter HIRTH
Abstract: An electrical feedthrough for electrically contacting a heat conductor in an exhaust gas guiding device for heating an exhaust gas flow. The heat conductor is located in a housing and at least one electrical conductor designed as a bolt is guided through an opening in the housing and is electrically conductively connected to the heat conductor. The electrical conductor is electrically insulated with respect to the housing and is permanently connected to the housing by a socket. The portion of the electrical conductor outside the housing is enclosed by a touch protection.
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公开(公告)号：US12195020B2
公开(公告)日：2025-01-14
申请号：US16906674
申请日：2020-06-19
Applicant: Cummins Inc.
Inventor： Hoseinali Borhan , Abbas Hooshmand Salemian , Edmund P. Hodzen
Abstract: A system includes a sensor array and a processing circuit. The processing circuit is operable to: store a policy; receive the sensor information from the sensor array; receive horizon information from a horizon system; input the sensor information and the horizon information into the policy; determine an output of the policy based on the input of the sensor information and the horizon information; control operation of a vehicle system according to the output; compare the sensor information received after controlling operation of the vehicle system according to the output relative to a reward or penalty condition; provide one of a reward signal or a penalty signal in response to the comparison; update the policy based on receipt of the reward signal or the penalty signal; and control the vehicle system using the updated policy to improve operation in view of the operating parameter.
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