公开(公告)号：US12060823B2

公开(公告)日：2024-08-13

申请号：US18031239

申请日：2021-10-05

Applicant: Vitesco Technologies GmbH

Inventor： Tobias Luebbert ,  Peter Bauer ,  Cornelius Köhler ,  Youness Idar

IPC: F01N3/20

CPC classification number: F01N3/208 ,  F01N3/206 ,  F01N3/2066 ,  F01N2610/1433 ,  F01N2610/144 ,  F01N2610/1446 ,  F01N2610/1453 ,  F01N2610/146 ,  F01N2900/04 ,  F01N2900/18 ,  F01N2900/1806 ,  F01N2900/1808 ,  F01N2900/1821 ,  F01N2900/1822

Abstract: A method for operating a conveying device for an aqueous urea solution in a motor vehicle, having a pump for conveying the aqueous urea solution, wherein the aqueous urea solution is conveyed from a tank along a pressure line to an injector, wherein the injector is arranged on an exhaust gas line and is designed to inject the aqueous urea solution into the exhaust gas line. The conveying speed of the pump is controlled depending on the opening operations and closing operations of the injector and/or the pressure conditions resulting therefrom in the conveying section between the pump and the injector.

公开(公告)号：US20240218818A1

公开(公告)日：2024-07-04

申请号：US18554710

申请日：2022-04-11

Applicant: Cummins Inc.

Inventor： Jinyong Luo ,  Lu Qiu ,  David Schmidt ,  Xiaobo Song ,  Yuying Song ,  Ying Yuan

IPC: F01N3/20 ,  B01D53/94

CPC classification number: F01N3/202 ,  B01D53/9418 ,  B01D53/9436 ,  B01D53/9495 ,  F01N3/208 ,  B01D2257/404 ,  B01D2257/406 ,  B01D2258/012 ,  F01N2900/1411 ,  F01N2900/1602 ,  F01N2900/1806

Abstract: Systems and methods for controlling and managing ammonia slip are provided. A method includes: receiving, by a controller, data regarding operation of an exhaust aftertreatment system; determining, by the controller, that a condition for ammonia slip is present based on the data regarding operation of the exhaust aftertreatment system; determining, by the controller, that a condition for ammonia storage is present based on the data regarding operation of the exhaust aftertreatment system; and, commanding, by the controller, a heater to activate and warm a component of the exhaust aftertreatment system to reduce the stored amount of ammonia.

公开(公告)号：US11927126B2

公开(公告)日：2024-03-12

申请号：US17965540

申请日：2022-10-13

Applicant: PACCAR Inc

Inventor： Charles Wayne Reinhardt Swart ,  Cynthia Chaffin Webb ,  Maarten Meijer ,  Varun Ramesh

IPC: F01N3/20 ,  B01D53/94 ,  F01N11/00 ,  F01N13/00

CPC classification number: F01N3/208 ,  B01D53/9418 ,  B01D53/9495 ,  F01N11/00 ,  F01N13/009 ,  F01N13/0093 ,  F01N2550/03 ,  F01N2550/05 ,  F01N2610/02 ,  F01N2610/1406 ,  F01N2900/16 ,  F01N2900/1621 ,  F01N2900/1806 ,  F01N2900/1814 ,  F01N2900/1818

Abstract: The present disclosure describes methods for evaluating quality of DEF dosed to an EAS including a close coupled SCR unit a downstream SCR unit. A NOx conversion efficiency of the close coupled SCR unit and a NOx conversion efficiency of the downstream SCR unit are used to evaluate quality of DEF. In some embodiments, the NOx conversion efficiency of close coupled SCR unit is used to evaluate quality of DEF. Operation of an EAS using the results of the evaluation of quality of DEF are described.

公开(公告)号：US11891938B2

公开(公告)日：2024-02-06

申请号：US17862031

申请日：2022-07-11

Applicant: Cummins Inc.

Inventor： Gayatri Adi ,  Kartavya Neema ,  Paul V. Moonjelly ,  Karla Carale Stricker Fuhs ,  Chinmay Rao

IPC: F01N9/00 ,  F02D41/00 ,  F02D41/02 ,  F02D43/04

CPC classification number: F01N9/00 ,  F01N9/005 ,  F02D41/0047 ,  F02D41/0235 ,  F02D43/04 ,  F01N2900/08 ,  F01N2900/14 ,  F01N2900/1402 ,  F01N2900/16 ,  F01N2900/1614 ,  F01N2900/1622 ,  F01N2900/1806

Abstract: Systems and methods for controlling a performance variable of an engine system are provided. An apparatus includes a response model circuit structured to apply a constraint to a response model that represents a relationship regarding a manipulated variable or a relationship between the performance variable and the manipulated variable. The apparatus further includes an optimization circuit structured to determine a target for the manipulated variable via the response model such that the target of the manipulated variable satisfies the constraint of the response model. The performance variable is indicative of performance of operation of the engine system and the manipulated variable is capable of affecting the performance variable. Operation of the engine system is adjusted based upon the target of the manipulated variable by controlling at least one of a fuel system or an air handling system of the engine system.

公开(公告)号：US11852066B1

公开(公告)日：2023-12-26

申请号：US17814344

申请日：2022-07-22

Applicant: Caterpillar Inc.

Inventor： Yong Yi ,  Ryan Kominkiewicz

IPC: F01N3/20 ,  F01N3/035 ,  F01N13/00 ,  F01N3/023 ,  F01N3/08

CPC classification number: F01N3/208 ,  F01N3/035 ,  F01N13/009 ,  F01N3/0231 ,  F01N3/0814 ,  F01N3/0821 ,  F01N3/0871 ,  F01N3/20 ,  F01N3/2006 ,  F01N2240/16 ,  F01N2340/06 ,  F01N2550/22 ,  F01N2560/026 ,  F01N2610/02 ,  F01N2610/10 ,  F01N2900/04 ,  F01N2900/1402 ,  F01N2900/1404 ,  F01N2900/1614 ,  F01N2900/1622 ,  F01N2900/1806 ,  F01N2900/1811

Abstract: An engine exhaust aftertreatment system is disclosed. The system may comprise: an internal combustion engine having an intake passage and an exhaust passage; a turbocharger fluidly connected to the internal combustion engine, the turbocharger including a compressor and a turbine, the compressor being in fluid communication with the intake passage, and the turbine being in fluid communication with the exhaust passage; a reductant injector situated downstream of the turbocharger, wherein the reductant injector is closely coupled to the turbocharger such that a reductant is injected into an exhaust flow of the turbocharger; a first container downstream of the reductant injector, the first container including a multi-functional catalyst (MFC); and a second container downstream of the first container, the second container including a selective catalytic reduction (SCR) component and an Ammonia catalyst (AMOx) component.

公开(公告)号：US11732629B1

公开(公告)日：2023-08-22

申请号：US17740362

申请日：2022-05-10

Applicant: Caterpillar Inc.

Inventor： Yong Yi ,  Karthick Govindan ,  Taeyoung Kim ,  Matthew T. Wolk

IPC: F01N3/20 ,  F01N3/28 ,  F01N3/029 ,  B01D53/90 ,  B01D53/94

CPC classification number: F01N3/2066 ,  F01N3/2892 ,  B01D53/90 ,  B01D53/9418 ,  B01D53/9422 ,  B01D53/9436 ,  B01D2251/20 ,  F01N3/0293 ,  F01N3/206 ,  F01N3/208 ,  F01N2240/20 ,  F01N2340/06 ,  F01N2570/14 ,  F01N2570/18 ,  F01N2610/02 ,  F01N2610/03 ,  F01N2610/102 ,  F01N2610/14 ,  F01N2610/1453 ,  F01N2900/04 ,  F01N2900/14 ,  F01N2900/18 ,  F01N2900/1806

Abstract: Systems, apparatuses, assemblies, and methods for diesel exhaust fluid (DEF) dosing can include a body defining an injector adaptor inlet and an injector adaptor outlet; and an injector mount or interface extending from the body. The injector mount can be between the first and second ends of the injector adaptor. The injector adaptor outlet can define an area greater than an area of the injector adaptor inlet. In a side view of the injector adaptor, at a bottom side of the body, a first straight line can extend along the body from the injector adaptor inlet to the injector adaptor outlet, and at a top side of the body opposite the bottom side, a second straight line can extend along the body from the injector adaptor inlet to the injector adaptor outlet. The second straight line can be at an acute angle relative to the first straight line.

公开(公告)号：US20190024563A1

公开(公告)日：2019-01-24

申请号：US15653031

申请日：2017-07-18

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Yue-Yun Wang ,  Yongjie Zhu ,  Alessia Tuninetti

IPC: F01N11/00 ,  F01N3/20 ,  F02D41/02 ,  B01D53/94

CPC classification number: F01N11/00 ,  B01D53/9418 ,  B01D53/9436 ,  B01D53/9495 ,  B01D2251/2067 ,  B01D2255/911 ,  B01D2257/404 ,  B01D2257/406 ,  F01N3/208 ,  F01N9/00 ,  F01N2550/02 ,  F01N2610/02 ,  F01N2900/04 ,  F01N2900/0418 ,  F01N2900/0601 ,  F01N2900/1402 ,  F01N2900/1806 ,  F02D41/0235 ,  F02D41/1406 ,  F02D2041/1412 ,  F02D2041/1433 ,  F02D2250/36

Abstract: An aftertreatment assembly includes a selective catalytic reduction (SCR) device having a catalyst and configured to receive an exhaust gas. A controller is operatively connected to the SCR device. The controller having a processor and a tangible, non-transitory memory on which is recorded instructions for executing a method of model-based monitoring of the SCR device. The method relies on a physics-based model that may be implemented in a variety of forms. The controller is configured to obtain at least one estimated parameter, and at least one threshold parameter based at least partially on a catalyst degradation model. The catalyst degradation model is based at least partially on a predetermined threshold storage capacity (ΘT). A catalyst status is determined based on a comparison of the estimated and threshold parameters. The operation of the assembly is controlled based at least partially on the catalyst status.

公开(公告)号：US20150328586A1

公开(公告)日：2015-11-19

申请号：US14808124

申请日：2015-07-24

Applicant: Cummins IP, Inc.

Inventor： Fan Zeng ,  C. Larry Bruner ,  Edmund P. Hodzen ,  Ian A. Package ,  Shankar Kumar ,  Krishna Kamasamudram

IPC: B01D53/94 ,  G01N33/00

CPC classification number: B01D53/9495 ,  B01D53/9404 ,  F01N3/2066 ,  F01N9/00 ,  F01N2560/021 ,  F01N2610/1493 ,  F01N2900/1616 ,  F01N2900/1806 ,  G01N33/0054 ,  Y02A50/246 ,  Y02T10/24 ,  Y02T10/47 ,  Y10T436/12

Abstract: A method and system for mitigating a urea deposit within an SCR system that includes determining a mass of an accumulated urea deposit present within the SCR catalyst and SCR piping, comparing the mass of the accumulated urea deposit with a deposit upper threshold limit, and initiating an SCR regeneration event when the mass of the accumulated urea deposit is greater than the deposit upper threshold limit. The method further includes determining an amount of NH3 passing through the SCR catalyst downstream of the urea deposit, comparing the amount of NH3 passing through the SCR catalyst with an NH3 regeneration threshold limit, and terminating the SCR regeneration event when the level of NH3 passing through the SCR catalyst is less than the SCR NH3 regeneration threshold.

Abstract translation: 一种用于减轻SCR系统内的尿素沉积物的方法和系统，其包括确定存在于SCR催化剂和SCR管道内的累积尿素沉积物的质量，将累积的尿素沉积物的质量与沉积物上限阈值进行比较，以及引发 当累积尿素沉积物的质量大于沉积物上限阈值时，SCR再生事件。 该方法还包括确定通过尿素沉积物下游的SCR催化剂的NH 3的量，将通过SCR催化剂的NH 3的量与NH 3再生阈限进行比较，并且当NH 3通过的水平通过时终止SCR再生事件 SCR催化剂小于SCR NH3再生阈值。

公开(公告)号：US20150275733A1

公开(公告)日：2015-10-01

申请号：US14424144

申请日：2013-12-06

Applicant: Arifumi MATSUMOTO ,  Toru KIDOKORO ,  Taiga HAGIMOTO ,  Kazuya TAKAOKA ,  Hirokazu NISHIJIMA ,  Yuki TERUI ,  Akifumi UOZUMI

Inventor： Arifumi Matsumoto ,  Toru Kidokoro ,  Taiga Hagimoto ,  Kazuya Takaoka ,  Hirokazu Nishijima ,  Yuki Terui ,  Akifumi Uozumi

IPC: F01N3/20 ,  F01N11/00

CPC classification number: F01N3/2066 ,  B01D53/9404 ,  B01D53/9495 ,  B01D2251/2067 ,  F01N3/035 ,  F01N3/106 ,  F01N3/208 ,  F01N11/00 ,  F01N2550/02 ,  F01N2550/03 ,  F01N2550/05 ,  F01N2560/021 ,  F01N2560/026 ,  F01N2610/02 ,  F01N2610/1453 ,  F01N2900/1402 ,  F01N2900/1602 ,  F01N2900/1616 ,  F01N2900/1621 ,  F01N2900/1622 ,  F01N2900/1806 ,  Y02A50/2325 ,  Y02T10/24 ,  Y02T10/47

Abstract: In a failure determination system that performs failure determination of an exhaust gas purification apparatus having a NOx selective catalytic reduction catalyst (NOx catalyst) that is disposed in an exhaust passage of an internal combustion engine and uses ammonia as a reducing agent, the failure determination of the exhaust gas purification apparatus is performed by a failure determination unit, based on a detected value of a NOx sensor that detects NOx in exhaust gas. Then, based on an adsorption amount difference at assumed failure that is the difference between an ammonia equilibrium adsorption amount in the NOx catalyst in an equilibrium state of ammonia adsorption, assuming that the exhaust gas purification apparatus is in a predefined failure state, and an actual ammonia adsorption amount in the NOx catalyst, the failure determination itself by the failure determination unit is inhibited or the use of the NOx sensor in the failure determination is restricted. Accordingly, in the failure determination system of exhaust gas purification apparatus having the NOx selective catalytic reduction catalyst, erroneous determinations at the time of failure determination are suppressed, thereby further improving the accuracy of the failure determination.

Abstract translation: 在具有设置在内燃机的排气通路中并使用氨作为还原剂的NOx选择性催化还原催化剂（NOx催化剂）的排气净化装置的故障判定系统中，故障判定系统， 废气净化装置由故障判定部基于检测排气中的NOx的NOx传感器的检测值进行。 然后，假设假设故障时的吸附量差异为氨吸附平衡状态下的NOx催化剂中的氨平衡吸附量之间的差异，假设废气净化装置处于预定的失效状态， NOx催化剂中的氨吸附量，故障判定单元的故障判定本身被抑制，或者在故障判定中使用NOx传感器受到限制。 因此，在具有NOx选择催化还原催化剂的排气净化装置的故障判定系统中，抑制故障判定时的错误判定，进一步提高故障判定的准确性。

公开(公告)号：US08955308B2

公开(公告)日：2015-02-17

申请号：US13609607

申请日：2012-09-11

Applicant: Peter Bauer ,  Jan Hodgson

Inventor： Peter Bauer ,  Jan Hodgson

IPC: F01N3/00 ,  F01N3/20 ,  F01N13/00 ,  G01F23/24 ,  F24H9/20 ,  G01N27/02 ,  B01D35/027

CPC classification number: F01N3/208 ,  B01D35/027 ,  F01N3/20 ,  F01N3/2066 ,  F01N13/008 ,  F01N2610/10 ,  F01N2610/1406 ,  F01N2900/1806 ,  F24H9/2007 ,  G01F23/242 ,  G01N27/02 ,  Y02A50/2325 ,  Y02T10/24

Abstract: A method for operating a tank for reducing agent, in particular aqueous urea solution, having a sensor with a first electrical contact and a second electrical contact, includes initially determining a conductance value for liquid reducing agent, a conductance value for frozen reducing agent and a conductance value for air in steps a.1) to a.3. A voltage is then applied between the first electrical contact and the second electrical contact in step b. A conductance value between the first electrical contact and the second electrical contact is then determined in step c. The conductance value determined in step c) is then compared to the conductance values determined in steps a.1) to a.3) and a determination is made as to if liquid reducing agent, frozen reducing agent, or air is present in step d). A motor vehicle in which the method is carried out, is also provided.

Abstract translation: 用于操作具有具有第一电接触和第二电接触的传感器的还原剂，特别是尿素水溶液的罐的方法包括首先确定液体还原剂的电导值，冷冻还原剂的电导值和 空气的电导值在步骤a.1）至a.3。 然后在步骤b中在第一电接触和第二电接触之间施加电压。 然后在步骤c中确定第一电接触和第二电接触之间的电导值。 然后将步骤c）中确定的电导值与步骤a.1）至a.3）中确定的电导值进行比较，并确定在步骤d中是否存在液体还原剂，冷冻还原剂或空气 ）。 还提供了执行该方法的机动车辆。