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74 条记录 (耗时 0.043 秒)

    CONTROL APPARATUS FOR INTERNAL COMBUSTION ENGINE
    14.
    发明申请
    CONTROL APPARATUS FOR INTERNAL COMBUSTION ENGINE 有权
    内燃机控制装置

    公开(公告)号：US20150120170A1

    公开(公告)日：2015-04-30

    申请号：US14390234

    申请日：2012-04-10

    申请人： Yuji Yamaguchi ,  Norihisa Nakagawa ,  Shuntaro Okazaki

    发明人： Yuji Yamaguchi ,  Norihisa Nakagawa ,  Shuntaro Okazaki

    IPC分类号： F02D41/30 ,  F02D41/14

    CPC分类号： F02D41/30 ,  F02D41/1401 ,  F02D41/1441 ,  F02D41/1477 ,  F02D2041/1422

    摘要： Invention suppresses deterioration of emission if there is air-fuel ratio imbalance among cylinders. Apparatus (100) controlling an engine including first and second air-fuel ratio sensors respectively disposed on upstream and downstream of catalyst, has: first determining device determining first F/B controlled variable according to deviation between output value and target value of first air-fuel ratio sensor; second determining device determining second F/B controlled variable according to deviation between output value and target value of second air-fuel ratio sensor; controlling device controlling fuel injection amount based on first and second F/B controlled variables; detecting device detecting air-fuel ratio imbalance among cylinders; and correcting device correcting second F/B controlled variable in direction in which there is hardly change of fuel injection amount to lean air-fuel ratio side, according to output deviation between first and second air-fuel ratio sensors, if air-fuel ratio imbalance is detected.

    摘要翻译： 如果气缸之间存在空燃比不均衡，则抑制发射劣化。 控制发动机的装置（100）包括分别设置在催化剂的上游和下游的第一和第二空燃比传感器，具有：第一确定装置根据第一空气 - 燃料比传感器的输出值和目标值之间的偏差确定第一F / B控制变量， 燃油比传感器; 第二确定装置根据第二空燃比传感器的输出值和目标值之间的偏差确定第二F / B控制变量; 基于第一和第二F / B控制变量控制燃料喷射量的控制装置; 检测装置检测气缸之间的空燃比不平衡; 以及根据第一和第二空燃比传感器之间的输出偏差校正第二F / B控制变量，其中燃料喷射量几乎不变化到稀空燃比侧的方向上，如果空燃比不平衡 被检测到。

    Control system of internal combustion engine
    16.
    发明授权
    Control system of internal combustion engine 有权
    内燃机控制系统

    公开(公告)号：US09593635B2

    公开(公告)日：2017-03-14

    申请号：US14763653

    申请日：2013-01-29

    申请人： Norihisa Nakagawa ,  Shuntaro Okazaki ,  Yuji Yamaguchi

    发明人： Norihisa Nakagawa ,  Shuntaro Okazaki ,  Yuji Yamaguchi

    IPC分类号： F01N3/00 ,  F02D41/14 ,  F02D41/02

    CPC分类号： F02D41/1475 ,  F02D41/0295 ,  F02D41/1439 ,  F02D41/1477

    摘要： A control device for an internal combustion engine, equipped with: an exhaust purification catalyst capable of storing oxygen; a downstream-side air-fuel ratio sensor arranged downstream in the direction of flow of exhaust from the exhaust purification catalyst; and an air-fuel ratio control device that controls the air-fuel ratio such that air-fuel ratio of the exhaust flowing into the exhaust purification catalyst reaches a target air-fuel ratio. The control device changes the target air-fuel ratio to a lean air-fuel ratio setting when the exhaust air-fuel ratio detected by the downstream-side air-fuel ratio sensor reaches a rich air-fuel ratio, and then changes the target air-fuel ratio to a slightly lean air-fuel ratio setting before the exhaust air-fuel ratio detected by the downstream-side air-fuel ratio sensor reaches a lean air-fuel ratio, and then changes the target air-fuel ratio to a rich air-fuel ratio setting when the exhaust air-fuel ratio detected by the downstream-side air-fuel ratio sensor reaches a lean air-fuel ratio, and then changes the target air-fuel ratio to a slightly rich air-fuel ratio setting before the exhaust air-fuel ratio detected by the downstream-side air-fuel ratio sensor reaches a rich air-fuel ratio.

    摘要翻译： 一种用于内燃机的控制装置，配备有能够存储氧气的排气净化催化剂; 下游侧空燃比传感器，其布置在排气净化催化剂的排气流动方向的下游; 以及空燃比控制装置，其使流入所述排气净化催化剂的排气的空燃比达到目标空燃比来控制所述空燃比。 当由下游侧空燃比传感器检测到的排气空燃比达到浓空燃比时，控制装置将目标空燃比变更为稀空燃比设定，然后将目标空气 - 燃料比与由下游侧空燃比传感器检测到的排气空燃比之前的略微偏空燃比设定达到稀空燃比，然后将目标空燃比变为浓 由下游侧空燃比传感器检测到的排气空燃比达到稀空燃比时的空燃比设定，然后将目标空燃比设定为稍高的空燃比设定 由下游侧空燃比传感器检测到的排气空燃比达到浓空燃比。

    Control apparatus for internal combustion engine
    17.
    发明授权
    Control apparatus for internal combustion engine 有权

    公开(公告)号：US09885307B2

    公开(公告)日：2018-02-06

    申请号：US14390234

    申请日：2012-04-10

    申请人： Yuji Yamaguchi ,  Norihisa Nakagawa ,  Shuntaro Okazaki

    发明人： Yuji Yamaguchi ,  Norihisa Nakagawa ,  Shuntaro Okazaki

    IPC分类号： F02D41/30 ,  F02D41/14

    CPC分类号： F02D41/30 ,  F02D41/1401 ,  F02D41/1441 ,  F02D41/1477 ,  F02D2041/1422

    摘要： Invention suppresses deterioration of emission if there is air-fuel ratio imbalance among cylinders. Apparatus (100) controlling an engine including first and second air-fuel ratio sensors respectively disposed on upstream and downstream of catalyst, has: first determining device determining first F/B controlled variable according to deviation between output value and target value of first air-fuel ratio sensor; second determining device determining second F/B controlled variable according to deviation between output value and target value of second air-fuel ratio sensor; controlling device controlling fuel injection amount based on first and second F/B controlled variables; detecting device detecting air-fuel ratio imbalance among cylinders; and correcting device correcting second F/B controlled variable in direction in which there is hardly change of fuel injection amount to lean air-fuel ratio side, according to output deviation between first and second air-fuel ratio sensors, if air-fuel ratio imbalance is detected.

    Control system of internal combustion engine
    18.
    发明授权
    Control system of internal combustion engine 有权

    公开(公告)号：US09765672B2

    公开(公告)日：2017-09-19

    申请号：US14763370

    申请日：2013-01-29

    申请人： Shuntaro Okazaki ,  Norihisa Nakagawa ,  Yuji Yamaguchi

    发明人： Shuntaro Okazaki ,  Norihisa Nakagawa ,  Yuji Yamaguchi

    IPC分类号： F01N3/20 ,  F01N9/00 ,  G01N27/41 ,  F02D41/02 ,  F02D41/14 ,  F01N11/00 ,  F01N13/00

    CPC分类号： F01N9/00 ,  F01N11/007 ,  F01N13/009 ,  F01N13/0093 ,  F01N2430/06 ,  F01N2560/025 ,  F01N2560/14 ,  F01N2900/1624 ,  F02D41/0295 ,  F02D41/1454 ,  F02D41/1475 ,  G01N27/41

    摘要： This control device for an internal combustion engine equipped with an exhaust purification catalyst, which is disposed in an exhaust passage of the internal combustion engine and capable of storing oxygen, includes: a downstream air-fuel ratio detection means that is disposed downstream of the exhaust purification catalyst in the exhaust flow direction; and an inflow air-fuel ratio control means that controls the air-fuel ratio of exhaust gas flowing into the exhaust purification catalyst. If the outflow air-fuel ratio detected by the downstream air-fuel ratio detection means is equal to or less than a rich-determination air-fuel ratio, which is richer than the stoichiometric air-fuel ratio, the inflow air-fuel ratio control means sets the target air-fuel ratio of exhaust gas flowing into the exhaust purification catalyst continuously or intermittently leaner than the stoichiometric air-fuel ratio until the oxygen storage amount of the exhaust purification catalyst reaches a prescribed storage amount. If the oxygen storage amount of the exhaust purification catalyst is equal to or greater than the prescribed storage amount, the inflow air-fuel ratio control means sets the target air-fuel ratio continuously or intermittently richer than the stoichiometric air-fuel ratio until the oxygen storage amount decreases toward zero without reaching the maximum oxygen storage amount.

    Air-fuel ratio control device for internal-combustion engine
    20.
    发明授权
    Air-fuel ratio control device for internal-combustion engine 有权
    内燃机空燃比控制装置

    公开(公告)号：US07159388B2

    公开(公告)日：2007-01-09

    申请号：US10881177

    申请日：2004-07-01

    申请人： Norihisa Nakagawa ,  Takahiko Fujiwara

    发明人： Norihisa Nakagawa ,  Takahiko Fujiwara

    IPC分类号： F01N3/00 ,  F01N3/10

    CPC分类号： F01N3/101 ,  F01N3/28 ,  F01N13/009 ,  F01N13/0093 ,  F01N2570/10 ,  F01N2570/12 ,  F01N2570/14 ,  F02D41/1441 ,  F02D41/1456 ,  F02D41/2461 ,  Y02T10/22

    摘要： A catalyst is positioned in an exhaust path of an internal-combustion engine. A main air-fuel ratio sensor and sub-oxygen sensor are respectively positioned upstream and downstream of the catalyst. A main feedback operation is performed so that the output of the main air-fuel ratio sensor is fed back and reflected in the fuel injection quantity until the control A/F prevailing upstream of the catalyst coincides with the target A/F. A sub-feedback operation is performed so that the output of the sub-oxygen sensor is fed back and reflected in the fuel injection quantity until the air-fuel ratio of an exhaust gas flowing out of the catalyst agrees with a theoretical air-fuel ratio. Since a catalyst window varies in accordance with the intake air quantity, the fuel injection quantity is corrected so that the larger the intake air quantity becomes, the richer the control A/F is.

    摘要翻译： 催化剂位于内燃机的排气路径中。 主要的空燃比传感器和次氧传感器分别位于催化剂的上游和下游。 执行主反馈操作，使得主空燃比传感器的输出被反馈并反映在燃料喷射量中，直到催化剂上游的控制A / F与目标A / F一致。 执行副反馈操作，使得副氧传感器的输出反馈并以燃料喷射量反映，直到从催化剂流出的排气的空燃比与理论空燃比一致 。 由于催化剂窗口根据进气量而变化，因此校正燃料喷射量，使得进气量越大，控制装置A / F越浓。