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    Air-fuel ratio imbalance among cylinders determining apparatus for a multi-cylinder internal combustion engine
    31.
    发明授权
    Air-fuel ratio imbalance among cylinders determining apparatus for a multi-cylinder internal combustion engine 有权
    用于多缸内燃机的气缸确定装置之间的空燃比不平衡

    公开(公告)号：US08903625B2

    公开(公告)日：2014-12-02

    申请号：US13133044

    申请日：2008-12-05

    申请人： Toru Kidokoro ,  Hiroshi Sawada ,  Yasushi Iwazaki ,  Fumihiko Nakamura

    发明人： Toru Kidokoro ,  Hiroshi Sawada ,  Yasushi Iwazaki ,  Fumihiko Nakamura

    IPC分类号： G06F7/00 ,  F02D41/00 ,  F02D41/14

    CPC分类号： F02D41/1441 ,  F02D41/0085 ,  F02D2041/1418

    摘要： A judging device comprises a catalyst, an upstream air/fuel ratio sensor having an air/fuel ratio sensing element covered with a diffusion resistance layer, and a downstream air/fuel ratio sensor. The judging device performs main feedback control to equalize the air/fuel ratio indicated by the output value of the upstream air/fuel ratio sensor to an upstream target air/fuel ratio and sub-feedback control to equalize the output value of the downstream air/fuel ratio sensor to a downstream target value. The judging device acquires “an imbalance judging parameter” which increases with “the increase of the difference between the amount of hydrogen contained in the exhaust gas before the exhaust gas passes through the catalyst and that after the exhaust gas passes through the catalyst” according to the sub-feedback amount. When the imbalance judging parameter is larger than an abnormality judgment threshold, the judging device judges that an air/fuel ratio imbalance among the cylinders has occurred. The judging device does not make judgment on air/fuel ratio imbalance among the cylinders if a predetermined judgment prohibition condition is satisfied, for example, if the flow of the exhaust gas is a predetermined value or more.

    摘要翻译： 判断装置包括催化剂，具有覆盖有扩散电阻层的空气/燃料比感测元件的上游空燃比传感器和下游空气/燃料比传感器。 判断装置执行主反馈控制，以将由上游空燃比传感器的输出值表示的空燃比与上游目标空燃比和副反馈控制进行平衡，以使下游空气/燃料比传感器的输出值相等， 燃料比传感器到下游目标值。 判断装置获取“不平衡判定参数”，其随着“排气通过催化剂之前的排气中所含的氢的量与废气通过催化剂之后的氢气的差异的增加”增加，根据 子反馈量。 当不平衡判定参数大于异常判断阈值时，判断装置判断出气缸之间的空气/燃料比不平衡发生。 如果满足预定的判定禁止条件，例如如果排气的流量为预定值以上，则判断装置不判断气缸之间的空气/燃料比不平衡。

    Apparatus for determining an air-fuel ratio imbalance among cylinders of an internal combustion engine
    32.
    发明授权
    Apparatus for determining an air-fuel ratio imbalance among cylinders of an internal combustion engine 有权
    用于确定内燃机的气缸之间的空燃比失衡的装置

    公开(公告)号：US08447497B2

    公开(公告)日：2013-05-21

    申请号：US13496623

    申请日：2009-09-18

    申请人： Yasushi Iwazaki ,  Hiroshi Miyamoto ,  Fumihiko Nakamura ,  Hiroshi Sawada ,  Toru Kidokoro

    发明人： Yasushi Iwazaki ,  Hiroshi Miyamoto ,  Fumihiko Nakamura ,  Hiroshi Sawada ,  Toru Kidokoro

    IPC分类号： B60T7/12

    CPC分类号： F02D41/00 ,  F02D41/0042 ,  F02D41/0085 ,  F02D41/1454 ,  F02D41/2441 ,  F02D41/2454

    摘要： An apparatus for determining an air-fuel ratio imbalance among cylinders based on an output value of an air-fuel ratio sensor, an imbalance determination parameter which becomes larger or smaller as a difference among air-fuel ratios becomes larger, and performs determining an air-fuel ratio imbalance among cylinders based on a result of a comparison between the imbalance determination parameter and a imbalance determination threshold. The determining apparatus calculates a purge correction coefficient which compensates for a change in the air-fuel ratio due to an evaporated fuel gas which is generated in a fuel tank, while the evaporated fuel gas is being introduced into an intake passage, and corrects a fuel injection amount with the purge correction coefficient FPG.

    摘要翻译： 一种用于基于空燃比传感器的输出值来确定气缸之间的空燃比不平衡的装置，作为空燃比之差变大或变小的不平衡确定参数变大，并且执行空气 - 基于不平衡确定参数和不平衡确定阈值之间的比较的结果，气缸之间的燃料比不平衡。 确定装置计算净化校正系数，其补偿由于在燃料箱中产生的蒸发燃料气体而引起的空燃比的变化，同时蒸发的燃料气体被引入进气通道中，并且校正燃料 喷射量与净化校正系数FPG。

    Inter-cylinder air-fuel ratio imbalance judgment device for multi-cylinder internal combustion engine
    34.
    发明授权
    Inter-cylinder air-fuel ratio imbalance judgment device for multi-cylinder internal combustion engine 有权
    多缸内燃机缸内空燃比不平衡判别装置

    公开(公告)号：US08249794B2

    公开(公告)日：2012-08-21

    申请号：US13257842

    申请日：2009-09-08

    申请人： Hiroshi Miyamoto ,  Hiroshi Sawada ,  Yasushi Iwazaki ,  Tatsuya Tsuji ,  Toru Kidokoro

    发明人： Hiroshi Miyamoto ,  Hiroshi Sawada ,  Yasushi Iwazaki ,  Tatsuya Tsuji ,  Toru Kidokoro

    IPC分类号： B60T7/12

    CPC分类号： F02D41/30 ,  F02D41/1495 ,  F02D41/221 ,  F02D2041/228 ,  Y02T10/40

    摘要： When the intake air amount is smaller than the specific intake air amount, the unit air-fuel ratio change amount calculated during the engine operation is corrected such that the unit air-fuel ratio change amount increases in the condition that the base unit air-fuel ratio change amount is an upper limit and when the intake air amount is greater than the specific intake air amount, the unit air-fuel ratio change amount calculated during the engine operation is corrected such that the unit air-fuel ratio change amount decreases in the condition that the base unit air-fuel ratio change amount is a lower limit. When the corrected unit air-fuel ratio change amount is greater than the judgment value, it is judged that the inter-cylinder air-fuel ratio imbalance condition occurs.

    摘要翻译： 当进气量小于特定进气量时，在发动机运转中计算出的单位空燃比变化量被校正为使得单位空燃比变化量在基本单位空气燃料 比例变化量为上限，当进气量大于特定进气量时，在发动机运转中计算出的单位空燃比变化量被校正，使得单位空燃比变化量在 条件是基本单位空燃比变化量是下限。 当校正单位空燃比变化量大于判定值时，判断为缸内空燃比不平衡状态发生。

    Apparatus and method for detecting abnormality of inter-cylinder air-fuel ratio dispersion in multi-cylinder internal combustion engine
    36.
    发明授权
    Apparatus and method for detecting abnormality of inter-cylinder air-fuel ratio dispersion in multi-cylinder internal combustion engine 有权
    多缸内燃机缸内空燃比分散异常检测装置及方法

    公开(公告)号：US08047064B2

    公开(公告)日：2011-11-01

    申请号：US12393597

    申请日：2009-02-26

    申请人： Yasushi Iwazaki ,  Toru Kidokoro ,  Hiroshi Sawada ,  Keiji Imamura ,  Fumihiko Nakamura

    发明人： Yasushi Iwazaki ,  Toru Kidokoro ,  Hiroshi Sawada ,  Keiji Imamura ,  Fumihiko Nakamura

    IPC分类号： G01M15/10

    CPC分类号： G01M15/104 ,  F02D41/0085 ,  F02D41/1441 ,  F02D41/1456

    摘要： An apparatus or a method for detecting an abnormality of inter-cylinder air-fuel ratio dispersion in a multi-cylinder internal combustion engine according to the invention is equipped with a catalytic element that purifies exhaust gas of hydrogen, a first air-fuel ratio sensor that detects an air-fuel ratio of exhaust gas that has not passed through the catalytic element, a second air-fuel ratio sensor that detects an air-fuel ratio of exhaust gas that has passed through the catalytic element, a device that detects an abnormality of inter-cylinder air-fuel ratio dispersion on the basis of a divergence state of a detected value of a second air-fuel ratio to a lean side from a detected value of a first air-fuel ratio, and a device that forcibly reduces fuel injection amounts in cylinders individually when an abnormality on dispersion is detected by the abnormality detector, detects a divergence state of the detected value of the second air-fuel ratio to the lean side from the detected value of the first air-fuel ratio at this time, and specifies as an abnormal cylinder that one of the cylinders in which a value indicating this divergence state has become smaller than at a time of detection of the abnormality of dispersion.

    摘要翻译： 根据本发明的用于检测多缸内燃机中的缸内空燃比分散异常的装置或方法装备有净化氢气废气的催化元件，第一空燃比传感器 检测未通过催化剂元件的废气的空燃比，检测通过催化元件的废气的空燃比的第二空燃比传感器，检测异常的装置 基于第一空燃比对第一空燃比的检测值与第一空燃比的检测值的偏差状态的液压缸间空燃比的分散，以及强制地减少燃料的装置 当由异常检测器检测到异常异常时，分别在气缸中的喷射量，从检测到的va检测到第二空气燃料比的检测值与偏斜侧的发散状态 此时指定第一空燃比，并且指定作为异常气缸，其中指示该发散状态的值的气缸中的一个已经变得比检测到色散异常时的小。

    Fuel injection system of an internal combustion engine
    38.
    发明授权
    Fuel injection system of an internal combustion engine 有权
    内燃机燃油喷射系统

    公开(公告)号：US08800269B2

    公开(公告)日：2014-08-12

    申请号：US13140293

    申请日：2010-10-25

    申请人： Yusuke Nakayama ,  Toru Kidokoro ,  Hiroshi Sawada

    发明人： Yusuke Nakayama ,  Toru Kidokoro ,  Hiroshi Sawada

    IPC分类号： F01N3/00 ,  F01N9/00 ,  F02D19/08 ,  F02D19/06

    CPC分类号： F01N9/00 ,  F01N3/0842 ,  F01N3/10 ,  F01N3/101 ,  F01N13/009 ,  F01N2570/14 ,  F01N2900/1602 ,  F02D19/0613 ,  F02D19/0615 ,  F02D19/0647 ,  F02D19/0692 ,  F02D19/081 ,  F02D19/084 ,  F02D41/0025 ,  F02D41/0027 ,  F02D41/0255 ,  F02D2200/0802 ,  Y02T10/22 ,  Y02T10/36

    摘要： In a fuel injection system of an internal combustion engine in which a first fuel, which has a property to inhibit the adsorption of exhaust gas components by an exhaust gas purification catalyst, and the second fuel, which has a property not to inhibit the adsorption of the exhaust gas components by the exhaust gas purification catalyst, are able to be selectively used, the present invention has a task to decrease an amount of consumption of the second fuel in a suitable manner. In order to solve this task, the fuel injection system of an internal combustion engine according the present invention is constructed such that the second fuel is first supplied to the internal combustion engine when the exhaust gas purification catalyst is in a cold state, and a change from the second fuel to the first fuel is then made before the exhaust gas purification catalyst subsequently rises in temperature to an activation temperature thereof.

    摘要翻译： 在内燃机的燃料喷射系统中，具有抑制排气净化催化剂吸附废气成分的特性的第一燃料和具有不抑制吸附的废气的第二燃料 排气净化催化剂的废气成分能够选择性地使用，本发明的任务是以合适的方式减少第二燃料的消耗量。 为了解决这个任务，本发明的内燃机的燃料喷射系统构成为，当排气净化催化剂处于冷态时，第一燃料首先供给到内燃机， 然后在废气净化催化剂随后在温度升高至其活化温度之前，从第二燃料到第一燃料。

    CATALYST DETERIORATION JUDGING SYSTEM
    40.
    发明申请
    CATALYST DETERIORATION JUDGING SYSTEM 审中-公开
    催化剂鉴定系统

    公开(公告)号：US20130216436A1

    公开(公告)日：2013-08-22

    申请号：US13879225

    申请日：2010-10-20

    申请人： Yoshitaka Nakamura ,  Toru Kidokoro ,  Hiroshi Sawada

    发明人： Yoshitaka Nakamura ,  Toru Kidokoro ,  Hiroshi Sawada

    IPC分类号： B01D53/94

    CPC分类号： G01N33/0037 ,  B01D53/9495 ,  F01N3/0814 ,  F01N3/0842 ,  F01N11/00 ,  F01N11/007 ,  F01N2550/02 ,  F01N2550/03 ,  F01N2560/026 ,  F01N2900/1402 ,  F01N2900/1614 ,  F02D41/0235 ,  G01M15/102 ,  Y02A50/245 ,  Y02T10/47

    摘要： The deterioration judgment for an absorption reduction type NOx catalyst is performed quickly and correctly. A catalyst deterioration judging system includes a supply unit which supplies a reducing agent, a measuring unit which measures a NOx concentration in an exhaust gas at a position downstream from the catalyst, a control unit which regulates an amount of the reducing agent so that an air-fuel ratio of the exhaust gas is a lean air-fuel ratio when the reducing agent is supplied from the supply unit, and a judging unit which judges deterioration of the catalyst on the basis of the NOx concentration measured by the measuring unit when the amount of the reducing agent is regulated so that the air-fuel ratio of the exhaust gas is the lean air-fuel ratio when NOx is absorbed by the catalyst.

    摘要翻译： 吸收还原型NOx催化剂的劣化判断快速正确地进行。 催化剂劣化判定系统包括：供给单元，其供给还原剂，测量单元，其测量在催化剂下游的位置处的排气中的NOx浓度;调节单元，其调节还原剂的量使得空气 当从供给单元供给还原剂时，排气的燃料比是稀空燃比;判定单元，其基于由测量单元测量的NOx浓度来判定催化剂的劣化， 减压剂被调节为使得当NOx被催化剂吸收时，废气的空燃比是稀空燃比。