知搜-全球专利检索

  1. Login
  2. Sign Up

Search Results

206 records (took 0.031 seconds)

    Apparatus for determining an air-fuel ratio imbalance among cylinders of an internal combustion engine
    1.
    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：US08650943B2

    公开(公告)日：2014-02-18

    申请号：US13393148

    申请日：2009-08-28

    Applicant: Koichi Kimura ,  Hiroshi Sawada ,  Toru Kidokoro ,  Yasushi Iwazaki

    Inventor： Koichi Kimura ,  Hiroshi Sawada ,  Toru Kidokoro ,  Yasushi Iwazaki

    IPC: G01M15/10

    CPC classification number: F02D41/0085 ,  F02B75/041 ,  F02B2275/16 ,  F02D15/04 ,  F02D41/1441 ,  F02D41/1456 ,  Y02T10/123

    Abstract: An air-fuel ratio imbalance among cylinders determining apparatus according to the present invention is applied to a multi-cylinder internal combustion engine in which a compression ratio is variable. The determining apparatus obtains, using at least an output value of an upstream air-fuel ratio sensor disposed for a catalyst, an “imbalance determining parameter” which becomes larger as a degree of an imbalance among “individual cylinder air-fuel ratios” becomes larger, each of the individual cylinder air-fuel ratios being an air-fuel ratio of a mixture supplied to each of cylinders. Further, the determining apparatus determines that an air-fuel ratio imbalance state among cylinders is occurring, when the imbalance determining parameter is larger than a predetermined threshold. The determining apparatus changes the predetermined threshold in accordance with a mechanical compression ratio of the engine.

    Abstract translation: 根据本发明的气缸确定装置之间的空燃比不平衡被应用于压缩比可变的多气缸内燃机。 判定装置使用至少设置于催化剂的上游空燃比传感器的输出值，获得“各个气缸空燃比”之间的不平衡度变大的“不平衡判定参数”变大 每个单独的气缸空燃比是供应到每个气缸的混合物的空燃比。 此外，当不平衡确定参数大于预定阈值时，确定装置确定气缸之间的空燃比不平衡状态正在发生。 确定装置根据发动机的机械压缩比来改变预定阈值。

    Apparatus and method for diagnosing catalyst deterioration
    2.
    发明授权
    Apparatus and method for diagnosing catalyst deterioration 有权
    用于诊断催化剂劣化的装置和方法

    公开(公告)号：US08534046B2

    公开(公告)日：2013-09-17

    申请号：US12812350

    申请日：2009-02-27

    Applicant: Hiroshi Miyamoto ,  Toru Kidokoro ,  Hiroshi Sawada ,  Yasushi Iwazaki ,  Koichi Kimura ,  Koichi Kitaura

    Inventor： Hiroshi Miyamoto ,  Toru Kidokoro ,  Hiroshi Sawada ,  Yasushi Iwazaki ,  Koichi Kimura ,  Koichi Kitaura

    IPC: F01N3/00

    CPC classification number: F01N11/007 ,  F01N11/00 ,  F02D41/0235 ,  F02D41/1441 ,  F02D2200/0816 ,  Y02T10/47

    Abstract: A catalyst deterioration diagnosing apparatus is provided with means for performing stoichiometric feedback control on the air-fuel ratio based on at least output from an upstream air-fuel ratio sensor provided upstream of a catalyst, means for measuring the oxygen storage capacity of the catalyst, and means for correcting the measured value of the oxygen storage capacity based on at least the output behavior of a downstream air-fuel ratio sensor provided downstream of the catalyst during the stoichiometric feedback control. The measured value of the oxygen storage capacity is corrected using the output behavior of the downstream air-fuel ratio sensor during stoichiometric feedback control. The diagnostic is performed after eliminating the effects from sulfur by correcting the measured value to a value corresponding to when low sulfur fuel is used, which makes it possible to prevent an erroneous diagnosis from being made.

    Abstract translation: 催化剂劣化诊断装置具有至少基于设置在催化剂上游的上游空燃比传感器的输出而对空燃比进行化学计量反馈控制的装置，用于测量催化剂的储氧能力的装置， 以及用于在化学计量反馈控制期间至少基于设置在催化剂下游的下游空燃比传感器的输出特性来校正储氧能力的测量值的装置。 在化学计量反馈控制中，使用下游空燃比传感器的输出特性来校正储氧容量的测量值。 在通过将测量值校正为与使用低硫燃料时相对应的值来消除硫的影响之后执行诊断，这使得可以防止进行错误的诊断。

    APPARATUS FOR DETERMINING AN AIR-FUEL RATIO IMBALANCE AMONG CYLINDERS OF AN INTERNAL COMBUSTION ENGINE
    5.
    发明申请
    APPARATUS FOR DETERMINING AN AIR-FUEL RATIO IMBALANCE AMONG CYLINDERS OF AN INTERNAL COMBUSTION ENGINE 有权
    用于确定内燃机缸内空燃比不平衡的装置

    公开(公告)号：US20120160022A1

    公开(公告)日：2012-06-28

    申请号：US13393148

    申请日：2009-08-28

    Applicant: Koichi Kimura ,  Hiroshi Sawada ,  Toru Kidokoro ,  Yasushi Iwazaki

    Inventor： Koichi Kimura ,  Hiroshi Sawada ,  Toru Kidokoro ,  Yasushi Iwazaki

    IPC: G01M15/00

    CPC classification number: F02D41/0085 ,  F02B75/041 ,  F02B2275/16 ,  F02D15/04 ,  F02D41/1441 ,  F02D41/1456 ,  Y02T10/123

    Abstract: An air-fuel ratio imbalance among cylinders determining apparatus according to the present invention is applied to a multi-cylinder internal combustion engine in which a compression ratio is variable. The determining apparatus obtains, using at least an output value of an upstream air-fuel ratio sensor disposed for a catalyst, an “imbalance determining parameter” which becomes larger as a degree of an imbalance among “individual cylinder air-fuel ratios” becomes larger, each of the individual cylinder air-fuel ratios being an air-fuel ratio of a mixture supplied to each of cylinders. Further, the determining apparatus determines that an air-fuel ratio imbalance state among cylinders is occurring, when the imbalance determining parameter is larger than a predetermined threshold. The determining apparatus changes the predetermined threshold in accordance with a mechanical compression ratio of the engine.

    Abstract translation: 根据本发明的气缸确定装置之间的空燃比不平衡被应用于压缩比可变的多气缸内燃机。 判定装置使用至少设置于催化剂的上游空燃比传感器的输出值，获得“各个气缸空燃比”之间的不平衡度变大的“不平衡判定参数”变大 每个单独的气缸空燃比是供应到每个气缸的混合物的空燃比。 此外，当不平衡确定参数大于预定阈值时，确定装置确定气缸之间的空燃比不平衡状态正在发生。 确定装置根据发动机的机械压缩比来改变预定阈值。

    APPARATUS AND METHOD FOR DIAGNOSING CATALYST DETERIORATION
    7.
    发明申请
    APPARATUS AND METHOD FOR DIAGNOSING CATALYST DETERIORATION 有权
    用于诊断催化剂测定的装置和方法

    公开(公告)号：US20100307135A1

    公开(公告)日：2010-12-09

    申请号：US12812350

    申请日：2009-02-27

    Applicant: Hiroshi Miyamoto ,  Toru Kidokoro ,  Hiroshi Sawada ,  Yasushi Iwazaki ,  Koichi Kimura ,  Koichi Kitaura

    Inventor： Hiroshi Miyamoto ,  Toru Kidokoro ,  Hiroshi Sawada ,  Yasushi Iwazaki ,  Koichi Kimura ,  Koichi Kitaura

    IPC: F01N11/00

    CPC classification number: F01N11/007 ,  F01N11/00 ,  F02D41/0235 ,  F02D41/1441 ,  F02D2200/0816 ,  Y02T10/47

    Abstract: A catalyst deterioration diagnosing apparatus is provided with means for performing stoichiometric feedback control on the air-fuel ratio based on at least output from an upstream air-fuel ratio sensor provided upstream of a catalyst, means for measuring the oxygen storage capacity of the catalyst, and means for correcting the measured value of the oxygen storage capacity based on at least the output behavior of a downstream air-fuel ratio sensor provided downstream of the catalyst during the stoichiometric feedback control. The measured value of the oxygen storage capacity is corrected using the output behavior of the downstream air-fuel ratio sensor during stoichiometric feedback control. The diagnostic is performed after eliminating the effects from sulfur by correcting the measured value to a value corresponding to when low sulfur fuel is used, which makes it possible to prevent an erroneous diagnosis from being made.

    Abstract translation: 催化剂劣化诊断装置具有至少基于设置在催化剂上游的上游空燃比传感器的输出而对空燃比进行化学计量反馈控制的装置，用于测量催化剂的储氧能力的装置， 以及用于在化学计量反馈控制期间至少基于设置在催化剂下游的下游空燃比传感器的输出特性来校正储氧能力的测量值的装置。 在化学计量反馈控制中，使用下游空燃比传感器的输出特性来校正储氧容量的测量值。 在通过将测量值校正为与使用低硫燃料时相对应的值来消除硫的影响之后执行诊断，这使得可以防止进行错误的诊断。

    Control apparatus and method for an internal combustion engine
    8.
    发明授权
    Control apparatus and method for an internal combustion engine 有权
    内燃机的控制装置和方法

    公开(公告)号：US09422882B2

    公开(公告)日：2016-08-23

    申请号：US13821377

    申请日：2010-09-08

    Applicant: Yusuke Nakayama ,  Toru Kidokoro ,  Hiroshi Sawada

    Inventor： Yusuke Nakayama ,  Toru Kidokoro ,  Hiroshi Sawada

    IPC: F02D19/06 ,  F02D41/02

    CPC classification number: F02D41/0255 ,  F02D19/0615 ,  F02D19/0647 ,  F02D19/0668 ,  F02D19/0692 ,  Y02T10/36

    Abstract: The present invention is intended to provide a technique of improving exhaust emissions at the time of starting up of an internal combustion engine, without decreasing the performance of a catalyst at the time of the engine starting up. The present invention is provided with the catalyst that is arranged in an exhaust passage of the internal combustion engine in which a plurality of kinds of fuels are able to be used, and serves to adsorb and remove exhaust gas components discharged from the internal combustion engine, wherein in cases where among the plurality of kinds of fuels, a first fuel is used in which unburnt fuel components thereof are easily adsorbed to the catalyst, at the time when a request is made for stopping the internal combustion engine, said first fuel is changed to a second fuel thereby to operate said internal combustion engine until said internal combustion engine is stopped.

    Abstract translation: 本发明旨在提供一种在内燃机启动时改善废气排放的技术，而不会降低发动机起动时催化剂的性能。 本发明提供了一种催化剂，其配置在能够使用多种燃料的内燃机的排气通路中，并且用于吸附和去除从内燃机排出的排气成分， 其特征在于，在所述多种燃料中，使用其中未燃燃料成分易于吸附到所述催化剂上的第一燃料，在所述内燃机停止要求时，所述第一燃料变化 到第二燃料，从而操作所述内燃机，直到内燃机停止。

    WARM-UP SYSTEM FOR EXHAUST SYSTEM OF INTERNAL COMBUSTION ENGINE
    10.
    发明申请
    WARM-UP SYSTEM FOR EXHAUST SYSTEM OF INTERNAL COMBUSTION ENGINE 有权
    内燃机排气系统补偿系统

    公开(公告)号：US20140216020A1

    公开(公告)日：2014-08-07

    申请号：US13580325

    申请日：2011-09-06

    Applicant: Daisuke Shibata ,  Toru Kidokoro ,  Hiroshi Sawada ,  Kazuya Takaoka

    Inventor： Daisuke Shibata ,  Toru Kidokoro ,  Hiroshi Sawada ,  Kazuya Takaoka

    IPC: F01N3/10

    CPC classification number: F01N3/10 ,  F01N3/035 ,  F01N3/2066 ,  F01N11/00 ,  F01N13/009 ,  F01N2430/00 ,  F01N2550/00 ,  F01N2550/04 ,  F01N2560/05 ,  F01N2900/0422 ,  F01N2900/08 ,  F01N2900/1606 ,  F02D41/0255 ,  F02D41/1495 ,  F02D41/22 ,  Y02T10/26 ,  Y02T10/47

    Abstract: An object of the invention is to prevent a situation in which failure diagnosis for an exhaust system component in an internal combustion engine cannot be completed from continuing for an unduly long period of time. A warm-up system for an exhaust system of an internal combustion engine according to the invention includes a warm-up control performing unit that performs warm-up control for warming up an exhaust system component upon start-up of the internal combustion engine and a failure diagnosis performing unit that performs failure diagnosis for the exhaust system component after the completion of warm-up of the exhaust system component. If a situation in which the operation of the internal combustion engine is stopped after the start of operation of the internal combustion engine before the completion of the failure diagnosis for the exhaust system component performed by the failure diagnosis performing unit has been repeated for a predetermined period of time, the warm-up control performing unit changes the warm-up control performed upon start-up of the internal combustion engine after the predetermined period of time has elapsed to a control that can raise the temperature of the exhaust system component more quickly than the warm-up control performed during the aforementioned predetermined period.

    Abstract translation: 本发明的目的是防止内燃机中的排气系统部件的故障诊断不能够持续不长时间的情况。 根据本发明的用于内燃机的排气系统的预热系统包括预热控制执行单元，其在内燃机启动时进行预热排气系统部件的预热控制，以及 故障诊断执行单元，其在排气系统部件的预热完成之后对排气系统部件执行故障诊断。 如果在由故障诊断执行单元执行的用于排气系统部件的故障诊断完成之后内燃机的运行停止之后的状态已经重复了预定时间段 的时间，预热控制执行单元改变在经过预定时间段之后内燃机启动时执行的预热控制，使其能够比排气系统组件的温度更快地升高 在上述预定期间内进行预热控制。

Patent Agency Ranking