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    • 2. 发明授权
    • Exhaust gas purification apparatus and exhaust gas purification method for internal combustion engine
    • 内燃机废气净化装置及排气净化方法
    • US07640728B2
    • 2010-01-05
    • US11666292
    • 2005-11-02
    • Kouji YoshizakiMakoto Ogiso
    • Kouji YoshizakiMakoto Ogiso
    • F01N3/00
    • F02D41/028B01D53/9431B01D53/9495F01N3/0233F01N3/0842F01N3/0878F01N3/2093F01N13/009F01N13/011F01N13/107F02B37/00F02D41/1443Y02T10/24
    • In an exhaust gas purification apparatus for an internal combustion engine (1) equipped with independent exhaust passages (2a, 2b) provided one for each cylinder group (1a, 1b) with a catalyst (3a, 3b) having a NOx trapping ability being arranged in each exhaust passage, the present invention is intended to provide a technique that can independently control the flow rates of exhaust gases flowing into the respective catalysts. To this end, the exhaust gas purification apparatus according to the present invention provides a communication passage (4) connecting mutually portions of said exhaust passages (2a, 2b) at upstream of said catalysts (3a, 3b), an upstream side switching valve (5) openning and closing said upstream side communication passage (4), a plurality of flow rate regulation valves (6a, 6b) being arranged at downstream of connecting portions of said exhaust passages with said upstream side communication passage, respectively, and a control section (9) controlling said upstream side switching valve (5) and said respective flow rate regulation valves (6a, 6b) in accordance with the states of said respective catalysts (3a, 3b). When the NOx trapping ability of one of the plurality of catalysts (3a, 3b) is regenerated, the control section (9) opens the upstream side switching valve (5), fully closes one flow rate regulation valve (6a, 6b) in one of the exhaust passages (2a, 2b) in which the one catalyst (3a, 3b) is arranged, and operates a reducing agent addition valve (7a, 7b) in such a manner that the reducing agent arrives at the one catalyst (3a, 3b) when the actual degree of opening of the one flow rate regulation valve (6a, 6b) becomes fully closed.
    • 在具有排气通道(2a,2b)的内燃机(1)的排气净化装置中,所述排气净化装置具备排气通路(2a,2b) 在每个排气通道中,本发明旨在提供一种能够独立地控制流入各催化剂的废气的流量的技术。 为此,根据本发明的排气净化装置,在所述催化剂(3a,3b)的上游设置有连通路(4),连通路(4)将上述排气通路(2a,2b)的上游侧的上游侧切换阀( 5)打开和关闭所述上游侧连通通道(4),多个流量调节阀(6a,6b)分别布置在所述排气通道与所述上游侧连通通道的连接部分的下游,控制部分 (9)根据所述各催化剂(3a,3b)的状态控制所述上游侧切换阀(5)和所述各流量调节阀(6a,6b)。 当多个催化剂(3a,3b)之一的NOx捕集能力再生时,控制部(9)打开上游侧切换阀(5),将一个流量调节阀(6a,6b)全部关闭, 的排气通道(2a,2b),其中布置有一个催化剂(3a,3b),并且以使还原剂到达一个催化剂(3a,3b)的方式操作还原剂添加阀(7a,7b) 3b)当一个流量调节阀(6a,6b)的实际开度达到完全关闭时。
    • 4. 发明授权
    • Control apparatus and method for internal combustion engine having variable valve system
    • 具有可变阀门系统的内燃机的控制装置和方法
    • US07032567B2
    • 2006-04-25
    • US10628497
    • 2003-07-29
    • Makoto OgisoTomomi Yamada
    • Makoto OgisoTomomi Yamada
    • F01L1/34
    • F02D13/0215F02D13/0234F02D13/0253F02D13/0261F02D13/0265F02D41/0002F02D41/307F02D2041/002F02D2250/21F02M26/01Y02T10/18Y02T10/42
    • An internal combustion engine is provided with a variable mechanism capable of adjusting the amount of intake air introduced into each cylinder by controlling the operation angle of intake valves. In a low-load region, the intake valve operation angle is minimized, and the amount of intake air is controlled on the basis of the degree of throttle opening. In the low-load region, the operation angle of each valve is set so that there is no period during which both an intake valve and an exhaust valve are open. In a high-load region where the intake pipe pressure becomes equal to the atmospheric pressure, the amount of intake air is controlled on the basis of the operation angle. During this process, the degree of throttle opening is controlled so that the intake pipe pressure can be kept at the atmospheric pressure before and after the intake amount control based on the operation angle is performed. Therefore, fluctuations in the intake pipe pressure at the time of a change of the operation angle can be reduced or prevented, and the amount of intake air can be controlled with good precision. Thus, the torque shock can be reduced or prevented.
    • 内燃机设置有可变机构,该可变机构能够通过控制进气门的操作角度来调节引入每个气缸的进气量。 在低负载区域中,进气门操作角度最小化,并且基于节气门开度的程度来控制进气量。 在低负载区域中,每个阀的操作角被设定为使得进气阀和排气阀都不打开的时段。 在进气管压力等于大气压的高负荷区域中,基于操作角度来控制进气量。 在该过程中,控制节气门开度,使得基于操作角进行进气量控制之前和之后的进气管压力可以保持在大气压。 因此,可以降低或防止在操作角度改变时的进气管压力的波动,并且能够以高精度控制进气量。 因此,可以减小或防止转矩冲击。
    • 9. 发明申请
    • Exhaust Gas Purifying Apparatus for Internal Combustion Engine
    • 内燃机废气净化装置
    • US20090249770A1
    • 2009-10-08
    • US12083244
    • 2006-03-09
    • Makoto Ogiso
    • Makoto Ogiso
    • F01N9/00F01N3/023
    • F02D41/0082F01N3/0253F01N3/0807F01N3/0821F01N3/0885F01N9/00F01N13/009F01N13/0097F01N13/011F01N13/107F01N2610/03F02B37/007F02B75/22F02D41/0065F02D41/027F02D41/029F02D41/10F02D41/40F02D2200/0812Y02T10/47
    • An exhaust gas purifying apparatus for an internal combustion engine includes plural exhaust gas purifying units which are provided on exhaust gas passages connected to plural cylinder groups in the internal combustion engine and purify exhaust gas flowing in the exhaust gas passages, a regeneration determining unit which determines whether or not the plural exhaust gas purifying units should be regenerated, and a regeneration control unit which executes regeneration control for regenerating the exhaust gas purifying units when the regeneration determining unit determines that the exhaust gas purifying units should be regenerated. The regeneration control unit simultaneously executes the regeneration control for the plural exhaust gas purifying units when a change of a combustion mode of the internal combustion engine is involved before and after execution of the regeneration control. Meanwhile, the regeneration control unit independently executes the regeneration control for each of the plural exhaust gas purifying units when the change of the combustion mode is not involved before and after the execution of the regeneration control.
    • 一种用于内燃机的废气净化装置,具有多个排气净化单元,其设置在与内燃机中的多个气缸组相连的废气通道上,并且净化在废气通道中流动的排气;再生判定单元, 是否应该再生多个排气净化单元,以及再生控制单元,其在再生判定单元判定废气净化单元应该被再生时,执行用于使排气净化单元再生的再生控制。 再生控制单元在执行再生控制之前和之后,当内燃机的燃烧模式发生变化时,同时执行多个排气净化单元的再生控制。 同时,当再生控制执行之前和之后不涉及燃烧模式的改变时,再生控制单元独立地执行用于多个废气净化单元中的每一个的再生控制。