Exhaust purification system of internal combustion engine
    1.
    发明授权
    Exhaust purification system of internal combustion engine 有权
    内燃机排气净化系统

    公开(公告)号:US08434297B2

    公开(公告)日:2013-05-07

    申请号:US12673888

    申请日:2009-06-15

    IPC分类号: F01N3/10 F01N3/20

    摘要: An electronic control unit executing an algorithm so as to operate an exhaust purification system of an engine. The algorithm (1) commences a regeneration treatment by causing an amount of fuel supplied to a combustion process of the engine to increase so as to change an air-fuel ratio of exhaust gas of the engine from a first lean air-fuel ratio to a set rich air-fuel ratio and (2) causes uncombusted fuel to be supplied to a NOx catalyst device during at least one of: a first period in which an air-fuel ratio of the exhaust gas within the NOx catalyst device changes from the first lean air-fuel ratio to the set rich air-fuel ratio when the regeneration treatment is started; and a second period after an air-fuel ratio of the exhaust gas within the NOx catalyst device becomes a ratio indicating completion of the regeneration treatment.

    摘要翻译: 一种执行算法以操作发动机的排气净化系统的电子控制单元。 算法(1)通过使供给到发动机的燃烧过程的燃料量增加而开始再生处理,以将发动机的排气的空燃比从第一稀空燃比改变为 设定浓空燃比,(2)在NOx催化剂装置中的排气的空燃比从第一时间变化的第一期间中的至少一个期间使未燃燃料供给到NOx催化剂装置 当再生处理开始时,稀空燃比与设定的浓空燃比; 并且在NOx催化剂装置内的排​​气的空燃比成为表示再生处理完成的比例的第二期间。

    EXHAUST PURIFICATION SYSTEM OF INTERNAL COMBUSTION ENGINE
    2.
    发明申请
    EXHAUST PURIFICATION SYSTEM OF INTERNAL COMBUSTION ENGINE 有权
    内燃机排气净化系统

    公开(公告)号:US20110209462A1

    公开(公告)日:2011-09-01

    申请号:US12673888

    申请日:2009-06-15

    IPC分类号: F01N3/10 F01N3/20

    摘要: In an exhaust purification system of an internal combustion engine, comprising a NOX catalyst device, which can satisfactorily store NOX in the exhaust gas when the concentration of oxygen in the exhaust gas is high and can release the stored NOX and purify the released NOX to N2 by reducing materials in the exhaust gas when the concentration of oxygen is decreased as a regeneration treatment, the regeneration treatment is carried out to change a combustion air-fuel ratio from a lean air-fuel ratio to a set rich air-fuel ratio, and N2O reducing material is supplied to the NOX catalyst device during at least one of a first period set within a period in which an air-fuel ratio in the exhaust gas within said NOX catalyst device changes from the lean air-fuel ratio to the set rich air-fuel ratio when the regeneration treatment is started and a second period set within a period after an air-fuel ratio in the exhaust gas within the NOX catalyst device becomes the stoichiometric air-fuel ratio when the regeneration treatment is finished.

    摘要翻译: 在内燃机的排气净化系统中,包括NO x催化剂装置,当废气中的氧浓度高时能够令人满意地将NO x储存在排气中,能够释放储存的NO x并将释放的NO x净化为N2 当通过再生处理使氧气浓度降低时,通过减少废气中的材料,进行再生处理,以将燃烧空燃比从稀空燃比变为浓空燃比,并且 在所述NO x催化剂装置内的排​​气中的空燃比从所述稀空燃比变为所述浓空燃比的期间内设定的第一期间中的至少一个中,向所述NO x催化剂装置供给N 2 O还原材料 当再生处理开始时的空燃比和在NO x催化剂装置内的排​​气中的空燃比后的期间内设定的第二期间成为理论空燃比 o当再生处理完成时。

    Exhaust purification system of internal combustion engine
    6.
    发明授权
    Exhaust purification system of internal combustion engine 有权
    内燃机排气净化系统

    公开(公告)号:US08443592B2

    公开(公告)日:2013-05-21

    申请号:US13265713

    申请日:2009-05-18

    IPC分类号: F01N3/10

    摘要: An exhaust purification system is provided with an NOx storage reduction catalyst arranged in an exhaust passage and an SOx trap material arranged upstream of the NOx storage reduction catalyst and removes SOx contained in exhaust gas. A main flow path has a secondary flow path connected to it. In the secondary flow path, a removal device is arranged for removing the sulfur constituent contained in fuel. The secondary flow path includes an opening and closing device. When the SOx removal rate of the SOx trap material becomes a predetermined removal rate judgment value or less or the concentration of the SOx which flows into the SOx trap material becomes a predetermined concentration judgment value or more, at least part of the fuel flowing through a main flow path is made to flow into the secondary flow path and run through the removal device.

    摘要翻译: 排气净化系统设置有布置在排气通道中的NOx储存还原催化剂和设置在NOx存储还原催化剂上游的SOx捕集材料,并且除去废气中所含的SO x。 主流路连接有二次流路。 在二次流路中,设置有去除装在燃料中的硫成分的去除装置。 二次流路包括打开和关闭装置。 当SOx捕集材料的SO x去除率变为预定的去除率判定值或更小或者流入SOx捕集材料的SO x的浓度变为预定浓度判定值或更高时,流经一氧化碳 使主流路流入二次流路并穿过去除装置。

    EXHAUST PURIFICATION SYSTEM OF INTERNAL COMBUSTION ENGINE
    7.
    发明申请
    EXHAUST PURIFICATION SYSTEM OF INTERNAL COMBUSTION ENGINE 有权
    内燃机排气净化系统

    公开(公告)号:US20120055143A1

    公开(公告)日:2012-03-08

    申请号:US13265713

    申请日:2009-05-18

    IPC分类号: F01N3/10

    摘要: An exhaust purification system is provided with an NOx storage reduction catalyst arranged in an exhaust passage and an SOx trap material arranged upstream of the NOx storage reduction catalyst and removes SOx contained in exhaust gas. A main flow path has a secondary flow path connected to it. In the secondary flow path, a removal device is arranged for removing the sulfur constituent contained in fuel. The secondary flow path includes an opening and closing device. When the SOx removal rate of the SOx trap material becomes a predetermined removal rate judgment value or less or the concentration of the SOx which flows into the SOx trap material becomes a predetermined concentration judgment value or more, at least part of the fuel flowing through a main flow path is made to flow into the secondary flow path and run through the removal device.

    摘要翻译: 排气净化系统设置有布置在排气通道中的NOx储存还原催化剂和设置在NOx存储还原催化剂上游的SOx捕集材料,并且除去废气中所含的SO x。 主流路连接有二次流路。 在二次流路中,设置有去除装在燃料中的硫成分的去除装置。 二次流路包括打开和关闭装置。 当SOx捕集材料的SO x去除率变为预定的去除率判定值或更小或者流入SOx捕集材料的SO x的浓度变为预定浓度判定值或更高时,流经一氧化碳 使主流路流入二次流路并穿过去除装置。

    CONTROL SYSTEM OF INTERNAL COMBUSTION ENGINE
    9.
    发明申请
    CONTROL SYSTEM OF INTERNAL COMBUSTION ENGINE 审中-公开
    内燃机控制系统

    公开(公告)号:US20130034469A1

    公开(公告)日:2013-02-07

    申请号:US13641993

    申请日:2010-04-22

    IPC分类号: F01N3/20

    摘要: A control system of an internal combustion engine in which a catalyst device having oxidation ability is arranged in the exhaust system, is provided. When a temperature of the catalyst device is lower than a set temperature, the combustion temperature is made a first combustion temperature or under or is made a second combustion temperature or over, to make an amount of lower olefin in the exhaust gas smaller than that when the combustion temperature is higher than the first combustion temperature and is lower than the second combustion temperature. Therefore, an amount of lower olefin which reduces the oxidation rate of CO in the catalyst device is decreased so as to realize the quick warming-up of the catalyst device by using of the oxidation reaction heat of CO.

    摘要翻译: 提供了一种内燃机的控制系统,其中具有氧化能力的催化装置设置在排气系统中。 当催化剂装置的温度低于设定温度时,将燃烧温度设定为第一燃烧温度或低于第二燃烧温度或者使其成为第二燃烧温度,以使废气中的低级烯烃的量小于 燃烧温度高于第一燃烧温度并且低于第二燃烧温度。 因此,降低催化剂装置中CO的氧化速率的低级烯烃的量减少,从而通过使用CO的氧化反应热来实现催化剂装置的快速预热。