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    Catalyst deterioration degree acquiring apparatus in internal combustion engine
    41.
    发明授权
    Catalyst deterioration degree acquiring apparatus in internal combustion engine 有权
    内燃机中的催化剂劣化度获取装置

    公开(公告)号：US07698886B2

    公开(公告)日：2010-04-20

    申请号：US12133473

    申请日：2008-06-05

    Applicant: Keiichiro Aoki

    Inventor： Keiichiro Aoki

    IPC: F01N3/00

    CPC classification number: F02D41/187 ,  F01N3/0807 ,  F01N11/00 ,  F01N2550/03 ,  F02D41/0295 ,  F02D41/1408 ,  F02D41/1475 ,  F02D2200/0816 ,  Y02T10/20 ,  Y02T10/47

    Abstract: The apparatus obtains a decreasing gradient of the maximum oxygen storing quantity Cmax with respect to the increase in an air flow rate Ga on the basis of two maximum oxygen storing quantities Cmax, which are respectively estimated in case where the air flow rate Ga assumes two different values, and the two values of the air flow rate Ga. As the deterioration degree of the catalyst unit 53 increases, the decreasing gradient increases. When the deterioration degree of the catalyst unit 53 is the same, the decreasing gradient tends to be the same, even if the degree of the response of the change in the output from a downstream air-fuel-ratio sensor 67 varies. Accordingly, the obtained decreasing gradient can be a value correctly indicating the deterioration degree of the catalyst unit 53.

    Abstract translation: 该设备基于两个最大氧气存储量Cmax，相对于空气流量Ga的增加获得最大氧气存储量Cmax的减小梯度，其分别在空气流量Ga呈现两种不同的情况下估计 值和空气流量Ga的两个值。随着催化剂单元53的劣化程度增加，梯度增加。 当催化剂单元53的劣化程度相同时，即使下游空燃比传感器67的输出的变化的响应程度发生变化，倾斜梯度倾向于相同。 因此，所得到的减小梯度可以是正确地表示催化剂单元53的劣化程度的值。

    TROUBLE DIAGNOSIS DEVICE AND TROUBLE DIAGNOSIS METHOD FOR NOx SENSOR
    42.
    发明申请
    TROUBLE DIAGNOSIS DEVICE AND TROUBLE DIAGNOSIS METHOD FOR NOx SENSOR 有权
    用于NOx传感器的故障诊断装置和故障诊断方法

    公开(公告)号：US20100031633A1

    公开(公告)日：2010-02-11

    申请号：US12525408

    申请日：2008-01-25

    Applicant: Eiichi Kitazawa

    Inventor： Eiichi Kitazawa

    IPC: F01N11/00 ,  G01M15/10

    CPC classification number: F02D41/222 ,  F01N3/0807 ,  F01N11/00 ,  F01N2560/026 ,  F01N2900/0416 ,  F01N2900/14 ,  F02D41/146 ,  F02D41/1461 ,  F02D41/1462 ,  Y02C20/10 ,  Y02T10/20 ,  Y02T10/40 ,  Y02T10/47

    Abstract: There is provided an NOx sensor trouble diagnosis device and an NOx trouble diagnosis method that can perform trouble diagnosis on a timely basis without intentionally creating any diagnosis mode during operation of an internal combustion engine and without deterioration of drivability and fuel consumption.The device includes an exhaust NOx flow rate calculating and storing means for calculating and storing an exhaust NOx flow rate discharged from an internal combustion engine per unit time, detected NOx concentration storing means for storing a detected NOx concentration detected by an NOx sensor, and trouble determining means for defining a reference pattern as a time-lapse variation reference of the exhaust NOx flow rate and a follow pattern as a time-lapse variation reference of the detected NOx concentration detected by the NOx sensor, and determining whether the detected NOx concentration undergoes a transition while having a predetermined relation with the follow pattern when the exhaust NOx flow rate undergoes a transition while having a predetermined relation with the reference pattern in a case where the internal combustion engine is in a normal operation mode, thereby determining the responsiveness of the NOx sensor.

    Abstract translation: 提供了一种NOx传感器故障诊断装置和NOx故障诊断方法，其能够在不在内燃机的运转中有意创建任何诊断模式的情况下及时进行故障诊断，而且不会降低驾驶性能和燃料消耗。 该装置包括排气NOx流量计算和存储装置，用于计算和存储从每单位时间内燃机排放的排气NOx流量，用于存储由NOx传感器检测的检测到的NOx浓度的检测的NOx浓度存储装置和故障 确定装置，用于将参考图案定义为排气NOx流量的延时变化参考值和作为由NOx传感器检测到的检测到的NOx浓度的延时变化基准的跟随模式，并且确定检测到的NOx浓度是否经历 在内燃机处于正常运转模式的情况下，当废气NOx流量处于与基准模式相关的预定关系时，与废气NOx流量成为一定的关系，同时与后续模式具有预定关系，从而确定 NOx传感器。

    Diesel oxidation catalyst filter heating system
    43.
    发明授权
    Diesel oxidation catalyst filter heating system 有权
    柴油氧化催化剂过滤器加热系统

    公开(公告)号：US07654079B2

    公开(公告)日：2010-02-02

    申请号：US11593722

    申请日：2006-11-07

    Applicant: Michael J. Ruth ,  Michael J. Cunningham ,  Joan M. Wills ,  Lyle E. Kocher

    Inventor： Michael J. Ruth ,  Michael J. Cunningham ,  Joan M. Wills ,  Lyle E. Kocher

    IPC: F01N3/00

    CPC classification number: F01N3/0231 ,  F01N3/0807 ,  F01N9/00 ,  F02B3/06 ,  F02B37/00 ,  F02D41/0007 ,  F02D41/0055 ,  F02D41/0255 ,  F02D41/1446 ,  F02D41/405 ,  F02M26/05 ,  F02M26/23 ,  Y02T10/144 ,  Y02T10/26 ,  Y02T10/44 ,  Y02T10/47

    Abstract: A system, method, and software that rapidly heats a diesel oxidation catalyst unit to an effective operating temperature at engine startup is disclosed. Upon ignition of an engine an electronic control unit is operable to lower a fresh air flow target value to a reduced fresh air flow target value as well as lower a valve opening limit of an exhaust gas recirculation valve to a reduced valve opening limit. The electronic control unit monitors a temperature value of a flow of exhaust entering the diesel oxidation catalyst unit until the temperature value reaches a first predetermined threshold value. After reaching the first predetermined threshold value, the electronic control unit causes the fuel system to set post-injection fueling to a predetermined post-injection fueling value until the temperature value of the flow of exhaust entering the diesel oxidation catalyst unit reaches a second predetermined threshold value.

    Abstract translation: 公开了一种将柴油机氧化催化剂单元快速加热到发动机启动时的有效工作温度的系统，方法和软件。 在发动机点火时，电子控制单元可操作以将新鲜空气流量目标值降低到减少的新鲜空气流量目标值，以及将排气再循环阀的阀开启极限降低到减小的阀开启极限。 电子控制单元监视进入柴油机氧化催化剂单元的排气流的温度值，直到温度值达到第一预定阈值。 在达到第一预定阈值之后，电子控制单元使燃料系统将后喷射加油设定到预定的后喷射加油值，直到进入柴油机氧化催化剂单元的排气的温度值达到第二预定阈值 值。

    REAGENT DOSING SYSTEM AND METHOD OF DOSING REAGENT
    45.
    发明申请
    REAGENT DOSING SYSTEM AND METHOD OF DOSING REAGENT 有权
    试剂计量系统和剂量试剂方法

    公开(公告)号：US20090301067A1

    公开(公告)日：2009-12-10

    申请号：US12473648

    申请日：2009-05-28

    Applicant: PHILIP J.G. DINGLE ,  MARTIN PAUL HARDY ,  ROMAN STEFAN ZUELCH

    Inventor： PHILIP J.G. DINGLE ,  MARTIN PAUL HARDY ,  ROMAN STEFAN ZUELCH

    IPC: F01N9/00 ,  F01N3/00

    CPC classification number: F01N3/208 ,  F01N3/021 ,  F01N3/035 ,  F01N3/0807 ,  F01N3/0814 ,  F01N3/0878 ,  F01N3/106 ,  F01N11/00 ,  F01N13/009 ,  F01N13/011 ,  F01N2240/25 ,  F01N2240/36 ,  F01N2250/02 ,  F01N2250/12 ,  F01N2250/14 ,  F01N2260/024 ,  F01N2410/04 ,  F01N2410/12 ,  F01N2560/021 ,  F01N2560/026 ,  F01N2570/14 ,  F01N2610/02 ,  F01N2610/03 ,  F01N2610/1413 ,  F01N2610/1433 ,  F01N2610/146 ,  F01N2900/0412 ,  F01N2900/08 ,  F01N2900/1814 ,  Y02A50/2344 ,  Y02T10/24 ,  Y02T10/47

    Abstract: A method of dosing a reagent into an exhaust gas stream of an internal combustion engine having an SCR catalyst, the method comprising injecting reagent from a reagent tank into the exhaust gas stream at a position upstream of the SCR catalyst using a reagent injector in accordance with a first dosing schedule in order to remediate a predetermined proportion of NOx in the exhaust gas stream, the first dosing schedule being associated with a first range of engine operating conditions; and injecting reagent from the reagent tank into the exhaust gas stream at a position upstream of the SCR catalyst using a reagent injector in accordance with a second dosing schedule in order to enable heat transfer between the reagent injector and said injected reagent, the second dosing schedule being associated with a second range of engine operating conditions.Dosing in accordance with said first or said second dosing schedule is carried out in dependence on whether engine operating conditions lie within said first or said second range of engine operating conditions, and the proportion of NOx in the exhaust gas stream which is remediated by dosing using said second dosing schedule is less than said predetermined portion. A reagent dosing system is also provided for dosing a reagent into the exhaust gas stream of an internal combustion engine, comprising a reagent tank for storing a supply of reagent, an injector module comprising an atomising dispenser and a positive-displacement metering pump which draws reagent from the reagent tank and delivers it to the dispenser a supply line coupling the reagent tank to the injector module, and a dosing control unit operable to control the injector module to inject reagent into the exhaust gas stream. A priming pump is provided to urge reagent along the supply line toward the injector module under selected conditions.

    Abstract translation: 一种将试剂投入到具有SCR催化剂的内燃机的排气流中的方法，该方法包括使用试剂注射器在SCR催化剂上游的位置将试剂从试剂罐注入到排气流中， 第一给药计划，以便修复废气流中预定比例的NOx，所述第一给药计划与第一范围的发动机操作条件相关联; 以及根据第二给药方案，使用试剂注射器在SCR催化剂的上游位置将试剂从试剂罐注入到排气流中，以便能够使试剂注射器和所述注射的试剂之间的热传递，第二给药方案 与第二范围的发动机操作条件相关联。 根据所述第一或所述第二给药计划的剂量是根据发动机操作条件是否位于所述发动机操作条件的所述第一或所述第二范围内以及排气流中的NOx的比例通过配量使用 所述第二给药方案小于所述预定部分。 还提供了一种试剂计量系统，用于将试剂计量​​到内燃机的废气流中，包括用于储存试剂供应的试剂罐，包括雾化分配器的注射器模块和吸取试剂的正位计量泵 从所述试剂罐输送并将其输送到所述分配器，所述供给管线将所述试剂罐连接到所述注射器模块;以及计量控制单元，其可操作以控制所述注射器模块将试剂注入到所述排气流中。 提供起动泵，以在选定的条件下沿着供应管路朝向注射器模块推动试剂。

    ENGINE COMPRISING A CATALYTIC CONVERTER WITH FAILSAFE OPERATION
    48.
    发明申请
    ENGINE COMPRISING A CATALYTIC CONVERTER WITH FAILSAFE OPERATION 审中-公开
    包括具有失效运行的催化转换器的发动机

    公开(公告)号：US20090158708A1

    公开(公告)日：2009-06-25

    申请号：US12297769

    申请日：2007-03-19

    Applicant: Charlotte Lynch ,  Stephane Bourret ,  Karim Guenounou ,  Bernard Dionnet

    Inventor： Charlotte Lynch ,  Stephane Bourret ,  Karim Guenounou ,  Bernard Dionnet

    IPC: F01N11/00 ,  F01N9/00

    CPC classification number: F01N3/0807 ,  F01N11/007 ,  F01N2250/12 ,  F01N2550/03 ,  Y02T10/20 ,  Y02T10/47

    Abstract: The invention proposes an engine (11) comprising a catalytic converter (12c), a first probe (120) able to deliver a first signal (Vsp) proportional to the oxygen content of an exhaust gas and installed upstream of the converter, a second oxygen probe (130) downstream of the converter and able to provide a second signal (Vsb), and means (13) for making a diagnosis regarding the operating condition of the converter, characterized in that: the second oxygen probe (130) is of the on/off type and the means (13) are designed to convert the first signal (Vsp) into a third signal (Vspb) of the on/off type and to make the diagnosis on the basis of the second and third signals (Vsb, Vspb).

    Abstract translation: 本发明提出一种发动机（11），其包括催化转化器（12c），第一探针（120），其能够输送与排气的氧含量成比例并且安装在转化器上游的第一信号（Vsp），第二氧 探头（130），能够提供第二信号（Vsb），以及用于对转换器的工作状态进行诊断的装置（13），其特征在于：所述第二氧探针（130）是 开/关型，并且装置（13）被设计为将第一信号（Vsp）转换成开/关类型的第三信号（Vspb），并且基于第二和第三信号（Vsb， Vspb）。

    Method for Regenerating Nitrogen Oxide Storage Catalysts
    49.
    发明申请
    Method for Regenerating Nitrogen Oxide Storage Catalysts 有权
    再生氮氧化物储存催化剂的方法

    公开(公告)号：US20090145112A1

    公开(公告)日：2009-06-11

    申请号：US11995765

    申请日：2006-06-22

    Applicant: Ulrich Goebel ,  Stephan Bremm ,  Christian Manfred Tomanik ,  Wilfried Mueller ,  Thomas Kreuzer

    Inventor： Ulrich Goebel ,  Stephan Bremm ,  Christian Manfred Tomanik ,  Wilfried Mueller ,  Thomas Kreuzer

    IPC: F01N9/00

    CPC classification number: B01D53/9495 ,  B01D53/9431 ,  B01D53/96 ,  F01N3/0807 ,  F01N3/22 ,  F01N3/32 ,  Y02T10/20

    Abstract: Nitrogen oxide storage catalytic converters for purifying the exhaust gas of lean-burn engines are periodically regenerated by switching the engine from lean-burn mode to rich-burn mode. After regeneration has taken place, the engine is switched back to lean-burn mode. At this time, rich exhaust gas is still flowing in the exhaust line from the engine to the catalytic converter, which rich exhaust gas is ejected via the catalytic converter into the environment by the following, lean exhaust gas. This leads to brief emissions peaks of the rich exhaust gas constituents and impairs the level of exhaust gas cleaning which can be obtained. In order to solve said problem, it is proposed to create oxidizing conditions by injecting air upstream of the storage catalytic converter, so that the rich exhaust gas constituents still flowing in the exhaust line upstream of the storage catalytic converter can be converted at the storage catalytic converter to form non-harmful products. The proposed method can lead to a considerable improvement in exhaust gas purification in particular in the case of catalytic converters which are already impaired in terms of their storage capacity through aging, and which must be regenerated significantly more frequently than fresh catalytic converters.

    Abstract translation: 通过将发动机从稀燃模式切换到富燃烧模式，周期性地再生用于净化贫燃发动机废气的氧化氮储存催化转化器。 发生再生后，发动机转回稀燃模式。 此时，排气管道中的废气仍然从发动机流向催化转化器，其中，废气通过下列稀释废气通过催化转化器排放到环境中。 这导致了丰富的废气成分的短暂的排放峰值，并损害了可以获得的废气净化水平。 为了解决上述问题，提出了通过在储存催化转化器的上游喷射空气来产生氧化条件，使得能够在储存催化转化器的上游排出的排气管中仍然流动的富排气成分在储存催化剂 转换器形成无害产品。 所提出的方法可以导致废气净化的显着改进，特别是在催化转化器的情况下，其通过老化而在储存容量方面已经受损，并且必须比新鲜催化转化器显着更频繁地再生。

    Exhaust gas purification apparatus and exhaust gas purification method
    50.
    发明申请
    Exhaust gas purification apparatus and exhaust gas purification method 审中-公开
    废气净化装置和废气净化方法

    公开(公告)号：US20090133388A1

    公开(公告)日：2009-05-28

    申请号：US12292617

    申请日：2008-11-21

    Applicant: Takashi Watanabe ,  Takaaki Ito ,  Keisuke Sano ,  Kimikazu Yoda ,  Kazuhiro Wakao ,  Atsushi Takara

    Inventor： Takashi Watanabe ,  Takaaki Ito ,  Keisuke Sano ,  Kimikazu Yoda ,  Kazuhiro Wakao ,  Atsushi Takara

    IPC: F01N9/00

    CPC classification number: F01N3/2013 ,  F01N3/0807 ,  F01N3/2053 ,  F01N9/00 ,  F01N2410/00 ,  Y02T10/26 ,  Y02T10/47

    Abstract: An exhaust gas purification apparatus which is installed in a flow channel of an exhaust gas discharged from an engine, includes: a first purification device that purifies one component contained in the gas; a heating device that heats the purification device to a predetermined temperature in a period from before the engine is started to a first point in time that is after the engine is started; control device that controls an air-fuel ratio of the gas so as to obtain a air-fuel ratio suitable for purifying the one component in a period from the time when the engine is started to a point in time that is on or after a time at which the purification device is heated to the predetermined temperature; and an adsorption device that communicates with the downstream of the first purification device and adsorbs another component contained in the gas.

    Abstract translation: 一种安装在从发动机排出的废气的流路中的废气净化装置，包括：净化气体中所含的一个成分的第一净化装置; 在从发动机起动前到发动机起动后的第一时间点的期间，将净化装置加热到规定温度的加热装置; 控制装置，其控制所述气体的空燃比，从而在从所述发动机起动时起至所述时间之后的期间内获得适合于净化所述一个部件的空燃比。 将净化装置加热至预定温度; 以及与第一净化装置的下游连通并吸附气体中所含有的其他成分的吸附装置。

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