中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

20 records (took 0.014 seconds)

    Selective catalyst reduction filter washcoat thickness ammonia compensation system
    2.
    发明授权
    Selective catalyst reduction filter washcoat thickness ammonia compensation system 有权
    选择性催化剂还原过滤器涂层厚度氨补偿系统

    公开(公告)号：US09133747B2

    公开(公告)日：2015-09-15

    申请号：US14066861

    申请日：2013-10-30

    Applicant: GM Global Technology Operations LLC

    Inventor： Thomas Larose, Jr. ,  Christopher C. Swoish ,  Christopher Whitt ,  Justin Adam Shetney

    IPC: F01N3/00 ,  F01N3/18

    CPC classification number: F01N3/18 ,  F01N3/035 ,  F01N3/208 ,  F01N11/002 ,  F01N11/005 ,  F01N2550/02 ,  F01N2560/06 ,  F01N2560/07 ,  F01N2560/08 ,  F01N2610/02 ,  F01N2900/0416 ,  F01N2900/0601 ,  F01N2900/1602 ,  F01N2900/1606 ,  F01N2900/1616 ,  F01N2900/1621 ,  F01N2900/1622 ,  Y02T10/24 ,  Y02T10/47

    Abstract: An exhaust treatment system includes a selective catalyst reduction filter (SCRF) device, a reductant delivery system, and a reductant storage module. The SCRF device includes a filter portion having a washcoat disposed thereon that defines a washcoat thickness (WCT). The reductant delivery system is configured to inject a reductant that reacts with the washcoat. The reductant storage module is in electrical communication with the reductant delivery system to determine a reductant setpoint that controls the amount of reductant injected from the reductant delivery system. The exhaust treatment system further includes a WCT compensation module configured to electrically communicate a WCT compensation value to the reductant storage module. The reductant storage module adjusts the setpoint according to the WCT compensation value such that the amount of ammonia that slips from the SCRF device is reduced as compared to the first setpoint.

    Abstract translation: 排气处理系统包括选择性催化剂还原过滤器（SCRF）装置，还原剂递送系统和还原剂储存模块。 SCRF装置包括其上设置有修补基面涂层厚度（WCT）的过滤器部分。 还原剂递送系统被配置为注入与修补基面涂层反应的还原剂。 还原剂存储模块与还原剂递送系统电连通以确定控制从还原剂递送系统注入的还原剂的量的还原剂设定点。 排气处理系统还包括被配置为将WCT补偿值电连接到还原剂存储模块的WCT补偿模块。 还原剂存储模块根据WCT补偿值来调整设定值，使得与第一设定点相比，从SCRF装置滑落的氨的量减少。

    EXHAUST FLUID DOSING CONTROL SYSTEM AND METHOD
    4.
    发明申请
    EXHAUST FLUID DOSING CONTROL SYSTEM AND METHOD 审中-公开
    排气流量控制系统及方法

    公开(公告)号：US20150033705A1

    公开(公告)日：2015-02-05

    申请号：US13959250

    申请日：2013-08-05

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Igor Anilovich ,  Jeffrey F. Loo ,  Janean E. Kowalkowski ,  Justin Adam Shetney

    IPC: F01N3/20

    CPC classification number: F01N3/208 ,  F01N11/00 ,  F01N2550/02 ,  F01N2560/026 ,  F01N2560/14 ,  F01N2610/02 ,  F01N2900/0412 ,  F01N2900/1621 ,  Y02A50/2325 ,  Y02T10/24 ,  Y02T10/47

    Abstract: A dosing control system for an exhaust system of an engine includes: a tank containing a reductant solution having urea; an injector operable to inject the reductant solution into an exhaust flow upstream of an SCR apparatus; first and second NOx sensors disposed to sense NOx emissions in the exhaust flow upstream and downstream, respectively, of the SCR apparatus; and a control module. The control module is disposed in signal communication with the first and second NOx sensors and in operable communication with the injector, the control module being operable to set an original dosing level and decrease a dosing of the reductant solution injected by the injector based on a determination from signals received from the first and second NOx sensors that a reduction in a conversion efficiency of the SCR apparatus below a defined level of conversion efficiency has occurred.

    Abstract translation: 用于发动机排气系统的计量控制系统包括：容纳含有尿素的还原剂溶液的罐; 注射器，其可操作以将还原剂溶液注入SCR装置上游的排气流中; 第一和第二NOx传感器设置成分别检测SCR设备的上游和下游的排气流中的NOx排放; 和控制模块。 控制模块被布置成与第一和第二NOx传感器信号通信并且与喷射器可操作地连通，所述控制模块可操作以基于确定来设置原始计量水平并减少由喷射器注入的还原剂溶液的计量 根据从第一和第二NOx传感器接收的信号，SCR设备的转换效率的降低已经发生在规定的转换效率水平之下。

    Exhaust fluid dosing control system and method
    5.
    发明授权
    Exhaust fluid dosing control system and method 有权

    公开(公告)号：US10100695B2

    公开(公告)日：2018-10-16

    申请号：US13959250

    申请日：2013-08-05

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Igor Anilovich ,  Jeffrey F. Loo ,  Janean E. Kowalkowski ,  Justin Adam Shetney

    IPC: F01N3/20 ,  F01N11/00

    Abstract: A dosing control system for an exhaust system of an engine includes: a tank containing a reductant solution having urea; an injector operable to inject the reductant solution into an exhaust flow upstream of an SCR apparatus; first and second NOx sensors disposed to sense NOx emissions in the exhaust flow upstream and downstream, respectively, of the SCR apparatus; and a control module. The control module is disposed in signal communication with the first and second NOx sensors and in operable communication with the injector, the control module being operable to set an original dosing level and decrease a dosing of the reductant solution injected by the injector based on a determination from signals received from the first and second NOx sensors that a reduction in a conversion efficiency of the SCR apparatus below a defined level of conversion efficiency has occurred.

    EXHAUST TREATMENT SYSTEM THAT GENERATES DEBOUNCE DURATION FOR NOX SENSOR OFFSET
    6.
    发明申请
    EXHAUST TREATMENT SYSTEM THAT GENERATES DEBOUNCE DURATION FOR NOX SENSOR OFFSET 有权
    生成NOX传感器偏差的脱氧剂处理系统

    公开(公告)号：US20160024988A1

    公开(公告)日：2016-01-28

    申请号：US14444715

    申请日：2014-07-28

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Christopher Whitt ,  Justin Adam Shetney

    IPC: F01N11/00

    CPC classification number: F01N11/00 ,  F01N3/2066 ,  F01N2550/02 ,  F01N2550/05 ,  F01N2560/026 ,  F01N2900/0416 ,  F01N2900/08 ,  Y02T10/24 ,  Y02T10/47

    Abstract: An exhaust treatment system configured to treat exhaust gas generated by an internal combustion engine includes a reductant delivery system that injects a reductant solution into an exhaust gas. A selective catalyst reduction (SCR) device reacts with the reductant solution to reduce NOx from the exhaust gas. A control module is in electrical communication with the SCR device and the reductant delivery system. The control module determines at least one of an injection status of the reduction delivery system and a performance of the SCR device. The control module further determines at least one debounce time for delaying diagnosis of a NOx sensor based on at least one of the injection status and the performance of the SCR device.

    Abstract translation: 构造成处理由内燃机产生的废气的废气处理系统包括将还原剂溶液注入废气中的还原剂输送系统。 选择性催化剂还原（SCR）装置与还原剂溶液反应以从废气中还原NOx。 控制模块与SCR装置和还原剂递送系统电连通。 所述控制模块确定所述还原递送系统的注入状态和所述SCR装置的性能中的至少一个。 控制模块还基于SCR设备的喷射状态和性能中的至少一个进一步确定用于延迟NOx传感器的诊断的至少一个去抖动时间。

    Exhaust treatment system that generates debounce duration for NOx sensor offset
    9.
    发明授权
    Exhaust treatment system that generates debounce duration for NOx sensor offset 有权
    产生NOx传感器偏移的去抖持续时间的排气处理系统

    公开(公告)号：US09476341B2

    公开(公告)日：2016-10-25

    申请号：US14444715

    申请日：2014-07-28

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Christopher Whitt ,  Justin Adam Shetney

    IPC: F01N3/00 ,  F01N11/00 ,  F01N3/20

    CPC classification number: F01N11/00 ,  F01N3/2066 ,  F01N2550/02 ,  F01N2550/05 ,  F01N2560/026 ,  F01N2900/0416 ,  F01N2900/08 ,  Y02T10/24 ,  Y02T10/47

    Abstract: An exhaust treatment system configured to treat exhaust gas generated by an internal combustion engine includes a reductant delivery system that injects a reductant solution into an exhaust gas. A selective catalyst reduction (SCR) device reacts with the reductant solution to reduce NOx from the exhaust gas. A control module is in electrical communication with the SCR device and the reductant delivery system. The control module determines at least one of an injection status of the reduction delivery system and a performance of the SCR device. The control module further determines at least one debounce time for delaying diagnosis of a NOx sensor based on at least one of the injection status and the performance of the SCR device.

    Abstract translation: 构造成处理由内燃机产生的废气的废气处理系统包括将还原剂溶液注入废气中的还原剂输送系统。 选择性催化剂还原（SCR）装置与还原剂溶液反应以从废气中还原NOx。 控制模块与SCR装置和还原剂递送系统电连通。 所述控制模块确定所述还原递送系统的注入状态和所述SCR装置的性能中的至少一个。 控制模块还基于SCR设备的喷射状态和性能中的至少一个进一步确定用于延迟NOx传感器的诊断的至少一个去抖动时间。

    SYSTEM AND METHOD FOR CONTROLLING DOSING IN SELECTIVE CATALYTIC REDUCTION CATALYST
    10.
    发明申请
    SYSTEM AND METHOD FOR CONTROLLING DOSING IN SELECTIVE CATALYTIC REDUCTION CATALYST 有权
    用于控制选择性催化还原催化剂剂量的系统和方法

    公开(公告)号：US20150252709A1

    公开(公告)日：2015-09-10

    申请号：US14197954

    申请日：2014-03-05

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Min Sun ,  Justin Adam Shetney ,  Amr Radwan

    IPC: F01N3/20

    CPC classification number: F01N3/208 ,  F01N13/0093 ,  Y02T10/24

    Abstract: An engine assembly includes an exhaust system having a first SCR catalyst, a second SCR catalyst in fluid communication with the first SCR catalyst, and an injector configured to inject reductant into the exhaust system. A controller is configured to estimate a first amount of ammonia stored in the first SCR catalyst and to estimate a second amount of ammonia stored in the second SCR catalyst. The controller is operatively connected to the injector and configured to control the amount of reductant injected by the injector. The controller controls the injector based on the first amount, the second amount, and a temperature of a substrate disposed in the second SCR catalyst.

    Abstract translation: 发动机组件包括具有第一SCR催化剂，与第一SCR催化剂流体连通的第二SCR催化剂的排气系统和被配置为将还原剂注入到排气系统中的喷射器。 控制器被配置为估计存储在第一SCR催化剂中的第一量的氨并估计存储在第二SCR催化剂中的第二量的氨。 控制器可操作地连接到喷射器并且被配置为控制由喷射器喷射的还原剂的量。 控制器基于第一量，第二量和设置在第二SCR催化剂中的衬底的温度来控制喷射器。

Patent Agency Ranking