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    • 1. 发明申请
    • EXHAUST GAS PURIFICATION SYSTEM FOR INTERNAL COMBUSTION ENGINE
    • 内燃机排气净化系统
    • US20110214417A1
    • 2011-09-08
    • US13061302
    • 2009-11-12
    • Kenji SakuraiShigeki MiyashitaYouichi Katumata
    • Kenji SakuraiShigeki MiyashitaYouichi Katumata
    • F01N3/10
    • F01N3/0807F01N3/0842F01N3/208F01N13/009F01N13/011F01N2900/1402F01N2900/1622F02D41/0275F02D41/1441F02D41/1454F02D41/146F02D2041/1468Y02T10/24
    • Concerning an internal combustion engine equipped with an NSR catalyst and an SCR, this invention is intended to provide an exhaust gas purification system for an internal combustion engine, the system being used to suppress degradation of emissions due to blow-through of NOx. The exhaust gas purification system, used for the internal combustion engine susceptible of lean-burn operation, includes an NSR catalyst disposed in an exhaust passageway of the internal combustion engine, an SCR disposed on a downstream side relative to the NSR catalyst, and an element for executing rich-spike control at a predetermined interval during lean-burn operation. On the basis of a first rule as a relationship between the time interval and the amount of NH3 generated in the NSR catalyst during rich-spike control, and a second rule as a relationship between the time interval and the amount of NOx blown through the NSR catalyst to the downstream side thereof during rich-spike control, the time interval is set to stay in a period during which a total of the amount of NOx blown through will be reduced and purified in the SCR. Preferably, the time interval is set so that a ratio of the amount of NH3 generation to that of NOx blow-through is greater than a predetermined ratio.
    • 关于配备有NSR催化剂和SCR的内燃机,本发明旨在提供一种用于内燃机的排气净化系统,该系统用于抑制由于NOx的吹穿引起的排放的劣化。 用于易燃燃烧操作的内燃机的排气净化系统包括设置在内燃机的排气通道中的NSR催化剂,相对于NSR催化剂位于下游侧的SCR, 用于在稀燃操作期间以预定间隔执行富峰控制。 在第一条规则的基础上,作为时间间隔和在富穗控制期间NSR催化剂中产生的NH 3的量之间的关系,以及作为时间间隔与通过NSR吹送的NOx的量之间的关系的第二规则 在富峰控制期间,催化剂到其下游侧,时间间隔被设定为停留在SCR中通过的总量将减少和净化的期间。 优选地,设定时间间隔,使得NH 3生成量与NOx吹出量的比率大于预定比例。
    • 4. 发明申请
    • EXHAUST GAS PURIFYING APPARATUS FOR INTERNAL COMBUSTION ENGINE
    • 用于内燃机的排气净化装置
    • US20110219750A1
    • 2011-09-15
    • US13130242
    • 2009-02-26
    • Kenji SakuraiShigeki Miyashita
    • Kenji SakuraiShigeki Miyashita
    • F01N3/10F01N11/00F02D41/00
    • F02D41/0235B01D53/944B01D2255/2065B01D2255/2066B01D2255/2068F01N3/0231F01N3/103F01N13/009F01N13/107F02D41/1467F02D41/401F02M26/15F02M26/35F02M26/43Y02T10/44
    • The present invention relates to an exhaust gas purifying apparatus for an internal combustion engine. An object of the invention is to reduce the amount of particulate matter that flows out from a catalytic converter that continuously burns particulate matter contained in an exhaust gas. The exhaust gas purifying apparatus for an internal combustion engine of the present invention includes a catalytic converter that continuously burns particulate matter contained in an exhaust gas; particle amount acquisition means that acquires an inflow amount of particulate matter to the catalytic converter; and particle amount increase means that, when an acquired inflow amount of particulate matter is less than a predetermined threshold value α, changes a value of a control parameter of the internal combustion engine in a direction such that the inflow amount of particulate matter to the catalytic converter increases. The threshold value α corresponds to a value of a particulate matter inflow amount to the catalytic converter at a time when a particulate matter outflow amount from the catalytic converter is a local minimum in a graph showing a relation between a particulate matter inflow amount to the catalytic converter and a particulate matter outflow amount from the catalytic converter.
    • 本发明涉及一种用于内燃机的废气净化装置。 本发明的目的是减少从连续燃烧废气中所含的颗粒物质的催化转化器流出的颗粒物质的量。 本发明的内燃机的废气净化装置具备连续燃烧废气中所含的颗粒物的催化转化器, 粒子量获取装置获取颗粒物质到催化转化器的流入量; 粒子量增加意味着当获得的颗粒物质的流入量小于预定阈值α时,将内燃机的控制参数的值改变为使得颗粒物质流入催化剂的方向 转换器增加。 阈值α对应于当催化转化器的颗粒物质流出量与催化转化器的颗粒物流入量相对于催化剂的颗粒物流入量之间的关系的曲线图中的局部最小值时的颗粒物流入量的值 转化器和来自催化转化器的颗粒物质流出量。
    • 9. 发明申请
    • APPARATUS FOR DETERMINING ABNORMAL COMBUSTION IN INTERNAL COMBUSTION ENGINE
    • 用于确定内燃机中异常燃烧的装置
    • US20110290004A1
    • 2011-12-01
    • US13000033
    • 2010-05-28
    • Shingo KorenagaShigeki MiyashitaHiroki ItoYusuke SaitouKouhei Kiyota
    • Shingo KorenagaShigeki MiyashitaHiroki ItoYusuke SaitouKouhei Kiyota
    • G01L23/22
    • F01M13/023F02D41/0025
    • An object is to provide an abnormal combustion determining apparatus for an internal combustion engine that can identify a major factor causing an oil to flow into a cylinder. The abnormal combustion determining apparatus for the internal combustion engine that includes a plurality of cylinders detects, for each cylinder, a cylinder in which abnormal combustion has occurred. The cylinder in which the abnormal combustion has occurred, and a history of load applied during an operation are stored in memory. It is determined whether or not the cylinder in which the abnormal combustion has occurred and which is stored in memory, is a specific cylinder. It is determined whether or not load present in the history stored in memory and used prior to the occurrence of the abnormal combustion is higher than a threshold value. Based on a combination of a decision made by the cylinder determining means and a decision made by the load determining means, a major factor causing the oil to flow into the cylinder is identified from among relations established for factors of oil flowing into the cylinder according to the combination of these decisions made.
    • 本发明的目的是提供一种用于内燃机的异常燃烧确定装置,其能够识别导致油流入气缸的主要因素。 包括多个气缸的用于内燃机的异常燃烧确定装置针对每个气缸检测发生异常燃烧的气缸。 发生异常燃烧的气缸和操作期间的负载历史被存储在存储器中。 确定发生了异常燃烧的气缸是否存储在存储器中是特定气缸。 确定存储在存储器中并且在发生异常燃烧之前使用的历史中的负载是否高于阈值。 基于由气缸确定装置作出的决定与负荷确定装置的决定的组合,从根据根据下列情况的油流入气缸的因素建立的关系中确定导致油流入气缸的主要因素 这些决定的结合。