利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

78 条记录 (耗时 0.03 秒)

    AIR-FUEL RATIO CONTROL APPARATUS AND AIR-FUEL RATIO CONTROL METHOD FOR INTERNAL COMBUSTION ENGINE
    1.
    发明申请
    AIR-FUEL RATIO CONTROL APPARATUS AND AIR-FUEL RATIO CONTROL METHOD FOR INTERNAL COMBUSTION ENGINE 审中-公开
    用于内燃机的空燃比比控制装置和空燃比控制方法

    公开(公告)号：US20100218485A1

    公开(公告)日：2010-09-02

    申请号：US12439902

    申请日：2007-09-05

    申请人： Takahiko Fujiwara ,  Norihisa Nakagawa ,  Naoto Kato ,  Shuntaro Okazaki ,  Koji Ide

    发明人： Takahiko Fujiwara ,  Norihisa Nakagawa ,  Naoto Kato ,  Shuntaro Okazaki ,  Koji Ide

    IPC分类号： F01N11/00 ,  F01N3/10 ,  F01N9/00

    CPC分类号： F02D41/027 ,  F01N2570/16 ,  F02D41/0295 ,  F02D41/1454 ,  F02D2200/0814

    摘要： A fuel injection amount is controlled so that the air-fuel ratio of exhaust gas flowing into a catalyst (6) oscillates around a stoichiometric air-fuel ratio. When it is estimated that the level of oxygen storage capacity of the catalyst (6) is lower than a predetermined reference capacity, the amplitude of the air-fuel ratio of the exhaust gas which oscillates around the stoichiometric air-fuel ratio is reduced by controlling the fuel injection amount. The level of the oxygen storage capacity of the catalyst (6) is estimated based on the amplitude of the output signal from an oxygen sensor (14) disposed downstream of the catalyst (6).

    摘要翻译： 控制燃料喷射量，使得流入催化剂（6）的废气的空燃比围绕化学计量空燃比振荡。 当估计催化剂（6）的储氧能力水平低于预定的参考容量时，围绕理论空燃比振荡的废气的空燃比的幅度通过控制 燃料喷射量。 基于来自设置在催化剂（6）下游的氧传感器（14）的输出信号的振幅来估计催化剂（6）的储氧能力水平。

    Air-fuel ratio control system of internal combustion engine
    2.
    发明授权
    Air-fuel ratio control system of internal combustion engine 有权
    内燃机空燃比控制系统

    公开(公告)号：US07474956B2

    公开(公告)日：2009-01-06

    申请号：US11885266

    申请日：2006-09-13

    申请人： Norihisa Nakagawa ,  Takahiko Fujiwara ,  Taiga Hagimoto ,  Junichi Kako ,  Naoto Kato ,  Shuntaro Okazaki

    发明人： Norihisa Nakagawa ,  Takahiko Fujiwara ,  Taiga Hagimoto ,  Junichi Kako ,  Naoto Kato ,  Shuntaro Okazaki

    IPC分类号： G06F19/00 ,  F02D41/14 ,  F01N3/10

    CPC分类号： F02D41/1441 ,  F01N2560/025 ,  F01N2560/14 ,  F02D41/123 ,  F02D41/1454 ,  F02D41/1456 ,  F02D2041/1409 ,  F02D2041/1422 ,  F02D2200/0814

    摘要： An air-fuel ratio control system maintaining constant an oxygen storage amount or oxygen release amount per unit time with respect to an exhaust purification catalyst having an oxygen storage capacity even if the intake air amount changes is provided.An air-fuel ratio control system of an internal combustion engine having an intake air amount detecting means, a linear air-fuel ratio sensor arranged at an upstream side of an exhaust purification catalyst, an O2 sensor arranged at a downstream side of said exhaust purification catalyst, a target air-fuel ratio controlling means for performing feedback control of a target air-fuel ratio of exhaust flowing into the exhaust purification catalyst based on output information from the intake air amount detecting means and the O2 sensor, and a fuel injection amount controlling means for performing feedback control of the fuel injection amount based on output information of the linear air-fuel ratio sensor so as to achieve the target air-fuel ratio, characterized in that the target air-fuel ratio controlling means performs feedback control of the target air-fuel ratio so that even when the intake air amount changes, a correction amount per unit time of an oxygen storage amount of the exhaust purification catalyst is made constant.

    摘要翻译： 即使提供进气量变化，也能够提供相对于具有储氧能力的排气净化催化剂，每单位时间保持恒定氧气储存量或氧释放量的空燃比控制系统。 一种内燃机的空燃比控制系统，具有进气量检测装置，布置在排气净化催化剂的上游侧的线性空燃比传感器，配置在排气净化装置的下游侧的O2传感器 催化剂，目标空燃比控制装置，用于根据来自进气量检测装置和O2传感器的输出信息，对流入排气净化催化剂的排气的目标空燃比进行反馈控制;燃料喷射量 控制装置，用于基于线性空燃比传感器的输出信息进行燃料喷射量的反馈控制，以实现目标空燃比，其特征在于，所述目标空燃比控制装置执行所述目标空燃比控制装置的反馈控制， 目标空燃比，使得即使当进气量变化时，排气的氧气存储量的每单位时间的校正量 净化催化剂保持恒定。

    AIR-FUEL RATIO CONTROL SYSTEM AND METHOD FOR INTERNAL COMBUSTION ENGINE
    3.
    发明申请
    AIR-FUEL RATIO CONTROL SYSTEM AND METHOD FOR INTERNAL COMBUSTION ENGINE 有权
    用于内燃机的空燃比比控制系统和方法

    公开(公告)号：US20080066727A1

    公开(公告)日：2008-03-20

    申请号：US11858283

    申请日：2007-09-20

    申请人： Naoto KATO ,  Shuntaro Okazaki

    发明人： Naoto KATO ,  Shuntaro Okazaki

    IPC分类号： F02D41/00

    CPC分类号： F02D41/2461 ,  F02D41/1441 ,  F02D41/1475 ,  F02D2041/1409 ,  F02D2041/1432

    摘要： An air-fuel ratio control system includes: a catalyst; an oxygen concentration sensor; an integral value calculation portion that calculates an integral value of a deviation updated by integrating the deviation between an output value from the oxygen concentration sensor and a reference value; an air-fuel ratio control portion that controls an air-fuel ratio of exhaust gas entering the catalyst to be equal to a target air-fuel ratio; a target air-fuel ratio switching portion that sets a rich target air-fuel ratio when the output value has been inverted from rich to lean while sets a lean target air-fuel ratio when the output value has been inverted from lean to rich; and an integral value correction portion that corrects the integral value of the deviation when the air-fuel ratio is being controlled to a switched target air-fuel ratio, based on whether the next inversion takes place within a predetermined time period from the last inversion.

    摘要翻译： 空燃比控制系统包括：催化剂; 氧浓度传感器; 积分值计算部，其计算通过对来自氧浓度传感器的输出值与参考值的偏差进行积分而更新的偏差的积分值; 控制进入催化剂的废气的空燃比等于目标空燃比的空燃比控制部; 目标空燃比切换部，其在将输出值从浓稀释为反转时设定浓的目标空燃比，同时在所述输出值从所述输出值反转为浓时设定稀薄目标空燃比; 以及积分值校正部，其基于在从最后的倒转的预定时间段内是否发生下一个反转，将空燃比被控制为切换目标空燃比时的偏差的积分值进行校正。

    VEHICLE AND VEHICLE CONTROL METHOD
    9.
    发明申请
    VEHICLE AND VEHICLE CONTROL METHOD 有权
    车辆和车辆控制方法

    公开(公告)号：US20110100344A1

    公开(公告)日：2011-05-05

    申请号：US12999006

    申请日：2009-06-18

    申请人： Akihiro Katayama ,  Naoto Kato ,  Shuntaro Okazaki ,  Kenji Kimura ,  Masashi Hakariya ,  Hiroaki Tsuji

    发明人： Akihiro Katayama ,  Naoto Kato ,  Shuntaro Okazaki ,  Kenji Kimura ,  Masashi Hakariya ,  Hiroaki Tsuji

    IPC分类号： F02D41/00

    CPC分类号： F02D41/1498 ,  F02D35/021 ,  F02D35/023 ,  F02D41/1401 ,  F02D41/1441 ,  F02D41/2454 ,  F02D2041/1418 ,  F02D2200/1015 ,  G01M15/11

    摘要： An engine ECU calculates a rotational variation based on a required rotation time when a complete misfire occurs in a cylinder, a required rotation time when complete combustion occurs in the cylinder, and a required rotation time during the current combustion stroke, and integrates the calculated rotational variation. If it is determined that the number of times the rotational variation has been integrated has reached a predetermined number, the engine ECU calculates an amount of learning value deviation from the integrated rotational variation. If the amount of learning value deviation is equal to or greater than a certain amount, the engine ECU corrects a learning value of a sub-feedback control with respect to the air-fuel ratio.

    摘要翻译： 发动机ECU基于在气缸中发生完全失火所需的旋转时间，在气缸中发生完全燃烧时所需的旋转时间以及当前燃烧行程期间所需的旋转时间，计算旋转变化，并且将计算出的旋转 变异。 如果确定旋转变化已经被积分的次数达到预定数量，则发动机ECU计算学习值偏离积分旋转变化量的量。 如果学习值偏差量等于或大于一定量，则发动机ECU相对于空燃比校正副反馈控制的学习值。

    Air-fuel-ratio control apparatus for internal combustion engine
    10.
    发明授权
    Air-fuel-ratio control apparatus for internal combustion engine 有权
    用于内燃机的空燃比控制装置

    公开(公告)号：US07677223B2

    公开(公告)日：2010-03-16

    申请号：US11991951

    申请日：2006-11-13

    申请人： Shuntaro Okazaki ,  Naoto Kato

    发明人： Shuntaro Okazaki ,  Naoto Kato

    IPC分类号： F02M1/00 ,  B60T7/12

    CPC分类号： F02D41/1456 ,  F01N3/101 ,  F01N13/009 ,  F01N13/0093 ,  F01N2560/025 ,  F02D41/1441 ,  F02D41/1483 ,  F02D41/1487 ,  F02D2041/1409 ,  Y02A50/2324 ,  Y02T10/22

    摘要： The air-fuel-ratio control apparatus for an internal combustion engine obtains a composite air-fuel ratio abyfs from a downstream-side correction value Vafsfb(k) based upon an output value Voxs from a downstream air-fuel-ratio sensor 67 and an output value Vabyfs from an upstream air-fuel-ratio sensor 66, and obtains an upstream-side feedback correction value DFi on the basis of the composite air-fuel ratio abyfs. A fuel injection quantity Fi is determined to a value obtained by adding the upstream-side correction value DFi to a control-use base fuel injection quantity Fbasec (=base fuel injection quantity Fbase·coefficient Ksub). The coefficient Ksub is determined on the basis of the downstream-side feedback correction value Vafsfb(k) in such a manner that the control-use base fuel injection quantity Fbasec (accordingly, the fuel injection quantity Fi) is determined such that the output value Vabyfs from the upstream air-fuel-ratio sensor 66 changes in the direction of canceling the change in the downstream-side feedback correction value Vafsfb(k).

    摘要翻译： 用于内燃机的空燃比控制装置根据来自下游空燃比传感器67的输出值Voxs和下游侧空燃比传感器67的输出值Voxs，从下游侧校正值Vafsfb（k）获得复合空燃比abyfs 从上游空燃比传感器66输出的输出值Vabyfs，基于复合空燃比abyfs求出上游侧反馈修正值DFi。 燃料喷射量Fi被确定为通过将上游侧校正值DFi加到控制用基础燃料喷射量Fbasec（=基础燃料喷射量Fbase·系数Ksub）而获得的值。 基于下游侧反馈校正值Vafsfb（k）来确定系数Ksub，使得控制用基础燃料喷射量Fbasec（相应地，燃料喷射量Fi）被确定为使得输出值 来自上游空燃比传感器66的Vabyfs在抵消下游侧反馈校正值Vafsfb（k）的变化的方向上变化。