Particulate filter
    3.
    发明授权
    Particulate filter 有权
    颗粒过滤器

    公开(公告)号:US08092565B2

    公开(公告)日:2012-01-10

    申请号:US12396117

    申请日:2009-03-02

    IPC分类号: B01D46/00

    摘要: Disclosed is a particulate filter 10, which comprises a filter body 8 including a plurality of filter segments F1, F2 joined to each other by a joining material 7, wherein each of the filter segments includes a plurality of inflow cells each having a closed end on a downstream side in an exhaust-gas flow direction, and a plurality of outflow cells each having a closed end on an upstream side in the exhaust-gas flow direction. The filter segments include a first filter segment located in a central region of the particulate filter and designed to form each of the inflow cells to have an opening area approximately equal to that of each of the outflow cells, and a second filer segment located in at least a part of an outer peripheral region of the particulate filter and designed to form each of the inflow cells to have an opening area greater than that of each of the outflow cells. The present invention can keep the central region of the particulate filter from becoming overheated during a particulate-filter regeneration process, while suppressing a pressure loss.

    摘要翻译: 公开了一种微粒过滤器10,其包括过滤体8,其包括通过接合材料7彼此连接的多个过滤器段F1,F2,其中每个过滤段包括多个流入单元,每个流入单元各自具有封闭端 排气流动方向的下游侧,以及在排气流动方向的上游侧具有封闭端的多个流出电池。 过滤器段包括位于颗粒过滤器的中心区域中的第一过滤器段,并被设计成形成每个流入单元以具有与每个流出单元的开口面积近似相等的开口面积,以及位于 所述颗粒过滤器的外周区域的至少一部分被设计成形成每个所述流入单元以具有大于每个所述流出单元的开口面积。 本发明可以在颗粒过滤器再生过程中保持颗粒过滤器的中心区域变得过热,同时抑制压力损失。

    Exhaust gas catalytic converter
    9.
    发明申请
    Exhaust gas catalytic converter 有权
    废气催化转化器

    公开(公告)号:US20060233678A1

    公开(公告)日:2006-10-19

    申请号:US11368674

    申请日:2006-03-07

    IPC分类号: B01J23/10 B01D50/00

    摘要: The present invention is intended to ensure the improvement in catalytic performance of an exhaust gas catalytic converter, which is an essential performance thereof, ensure the thermal resistance thereof and downsize the converter, i.e., improve the arrangeability thereof. The exhaust gas catalytic converter has an upstream catalyst and a downstream catalyst which are arranged in upstream and downstream sides of an engine exhaust passage through which exhaust gas flows. Each of the upstream catalyst and the downstream catalyst contains an oxygen storage component. The oxygen storage component in the upstream catalyst has a structure in which Rh atoms are placed at or between crystal lattice points of a mixed oxide containing Ce and Zr and has a larger amount of oxygen storage than the oxygen storage component in the downstream catalyst under the same temperature conditions.

    摘要翻译: 本发明旨在确保排气催化转化器的催化性能的提高,这是其基本性能,确保其耐热性和减小转炉的尺寸,即提高其排列性。 排气催化转化器具有上游催化剂和下游催化剂​​,其配置在排气流过的发动机排气通路的上游侧和下游侧。 上游催化剂和下游催化剂​​中的每一个含有储氧成分。 上游催化剂中的储氧组分具有其中Rh原子位于含Ce和Zr的混合氧化物的晶格点之间或之间的结构,并且具有比下游催化剂​​中的储氧组分更大的氧存储量 相同的温度条件。

    Control device of hydrogen engine
    10.
    发明授权
    Control device of hydrogen engine 有权
    氢气发动机控制装置

    公开(公告)号:US07111452B2

    公开(公告)日:2006-09-26

    申请号:US11048722

    申请日:2005-02-03

    IPC分类号: F01N3/00

    摘要: There are provided NOx trap catalyst to trap and release NOx based on air-fuel ratio, first fuel supply means for supplying gasoline, second fuel supply means for supplying hydrogen, engine operation detecting means for detecting engine operating condition, fuel ratio changing means for changing the ratio of gasoline and hydrogen, NOx release determining means for determining whether it is required for the NOx to be released based on a state of the trapped NOx, NOx releasing means for releasing the NOx trapped by making the air-fuel ratio rich when the NOx releasing requirement is determined, gasoline ratio increasing means for increasing the ratio of gasoline when NOx releasing requirement is determined and the air-fuel-ratio rich control is executed. Accordingly, improper vibrations or noises can be restrained from occurring when the rich air-fuel-ratio control is executed to release the trapped NOx from the NOx trap catalyst.

    摘要翻译: 提供了用于基于空燃比捕获和释放NOx的NOx捕集催化剂,用于供应汽油的第一燃料供应装置,用于供应氢的第二燃料供应装置,用于检测发动机操作条件的发动机操作检测装置,用于改变 汽油和氢气的比例,NOx释放确定装置,用于基于被捕获的NOx的状态确定是否需要释放NOx; NOx释放装置,用于通过使空燃比富集来释放被捕获的NOx, 确定NOx释放要求,在确定NOx释放要求时提高汽油比例并执行空燃比富控制的汽油比增加装置。 因此,当执行浓空燃比控制以从NOx捕集催化剂释放被捕获的NOx时,可以抑制不适当的振动或噪声。