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9 条记录 (耗时 0.013 秒)

    Device for diagnosing misfiring of a multi cylinder engine
    3.
    发明授权
    Device for diagnosing misfiring of a multi cylinder engine 失效
    用于诊断多缸发动机失火的装置

    公开(公告)号：US5734100A

    公开(公告)日：1998-03-31

    申请号：US678740

    申请日：1996-07-11

    申请人： Youichi Kishimoto ,  Toshio Takahata

    发明人： Youichi Kishimoto ,  Toshio Takahata

    IPC分类号： G01M15/04 ,  F02D45/00 ,  F02P17/12 ,  G01M15/11 ,  G01M15/00

    CPC分类号： G01M15/11

    摘要： A mechanism is provided for outputting reference signals in synchronism with the firing action of the cylinders of a multi cylinder engine. Correction coefficients are calculated for correcting deviations in the periods between the cylinders from the periods of the reference signals which are obtained during the fuel cut off state. The periods of the reference signals for each cylinder are corrected according to these correction coefficients, and the presence or absence of misfiring for each cylinder is determined from the corrected periods. On the one hand the determination of misfiring is prevented when input of external interference to the engine is present, and on the other hand the learning of the correction coefficients is prevented when instability has occurred in the reference signals during the fuel cut off state. Since the learning of the correction coefficients is prevented in different circumstances from those in which the determination of misfiring is prevented, the learning accuracy for the correction coefficients is elevated.

    摘要翻译： 提供了一种用于与多缸发动机的气缸的点火动作同步地输出参考信号的机构。 计算校正系数，用于校正从在燃料切断状态期间获得的参考信号的周期之间的气缸之间的周期中的偏差。 根据这些校正系数校正每个气缸的参考信号的周期，并且从校正的周期确定每个气缸的是否存在点火。 一方面，当存在对发动机的外部干扰的输入时，防止发生失火的判定，另一方面，在燃料切断状态下在参考信号中发生不稳定性时，可以防止校正系数的学习。 由于在不同的情况下防止校正系数的学习与预防失火确定的情况相反，所以校正系数的学习精度提高。

    Secondary air supplying apparatus for internal combustion engine
    4.
    发明授权
    Secondary air supplying apparatus for internal combustion engine 失效
    内燃机二次空气供给装置

    公开(公告)号：US5706653A

    公开(公告)日：1998-01-13

    申请号：US610005

    申请日：1996-03-04

    申请人： Makoto Shoji ,  Youichi Kishimoto

    发明人： Makoto Shoji ,  Youichi Kishimoto

    IPC分类号： G01M15/04 ,  F01N3/22 ,  F01N11/00 ,  F02B77/08 ,  F02D41/14 ,  F02D45/00

    CPC分类号： F01N3/227 ,  F01N11/00 ,  F01N3/22 ,  F01N2550/14 ,  Y02T10/47

    摘要： A secondary air supply apparatus for an internal combustion engine is provided with an air-fuel ratio sensor disposed upstream of an catalytic converter in an exhaust passage. An outlet port of a secondary air supply conduit is formed upstream of and in the vicinity of the air-fuel ratio sensor. Air discharged from an air pump is supplied to the exhaust passage through the secondary air supply conduit. A control unit diagnoses as to whether or not the air-fuel ratio sensor is activated by checking as to whether a detection signal of the air-fuel ratio sensor is out of a predetermined range or not. Then, the control unit diagnoses as to whether the supply of the secondary air is normal or not on the basis of the detection signal of the air-fuel ratio sensor. Therefore, the diagnosis of the supply of the secondary air is correctly executed.

    摘要翻译： 用于内燃机的二次空气供应装置设置有设置在排气通道中的催化转化器上游的空燃比传感器。 二次空气供给管道的出口形成在空燃比传感器的上游侧和附近。 从气泵排出的空气通过二次空气供给管道被供给到排气通路。 控制单元通过检查空燃比传感器的检测信号是否超出预定范围来诊断空燃比传感器是否被启动。 然后，控制单元基于空燃比传感器的检测信号来诊断二次空气的供给是否正常。 因此，正确地执行二次空气供给的诊断。

    Air/fuel ratio control system for engine
    5.
    发明授权
    Air/fuel ratio control system for engine 失效
    发动机空燃比控制系统

    公开(公告)号：US5483945A

    公开(公告)日：1996-01-16

    申请号：US209048

    申请日：1994-03-11

    申请人： Masato Kobayashi ,  Osamu Matsuno ,  Youichi Kishimoto ,  Katsuhiko Kawamura

    发明人： Masato Kobayashi ,  Osamu Matsuno ,  Youichi Kishimoto ,  Katsuhiko Kawamura

    IPC分类号： F02D45/00 ,  F02D41/14

    CPC分类号： F02D41/248 ,  F02D41/2445 ,  F02D41/2454 ,  F02D41/2483

    摘要： A learning control system for controlling an air fuel ratio an engine employs a slowly updated second learning control variable in addition to a normally updated first learning control variable in order to utilize the learning function sufficiently even when a deviation of the air fuel ratio exceeds the learning range of the first variable. The control system according to an illustrated embodiment of the invention identifies a current engine operating area among a plurality of such areas, in accordance with a sensed engine operating condition, obtains a value of the first learning variable corresponding to the identified operating area, and a value of the second learning variable, determines a learning quantity which is a sum of the first and second learning variables by using the obtained values, and uses this learning quantity for determining a desired fuel supply quantity. The second learning variable is updated slowly whereas the first learning variable is updated in a sensitive and speedy manner.

    摘要翻译： 用于控制空燃比的学习控制系统除了通常更新的第一学习控制变量之外，还采用缓慢更新的第二学习控制变量，以便即使当空燃比的偏差超过学习时也能充分利用学习功能 第一个变量的范围。 根据本发明示出的实施例的控制系统根据所感测到的发动机操作条件识别多个这样的区域中的当前发动机操作区域，获得与所识别的操作区域相对应的第一学习变量的值，以及 第二学习变量的值通过使用获得的值来确定作为第一学习变量和第二学习变量的和的学习量，并且使用该学习量来确定期望的燃料供给量。 第二个学习变量被缓慢地更新，而第一个学习变量以敏感和快速的方式更新。

    Engine misfire diagnosis apparatus
    6.
    发明授权
    Engine misfire diagnosis apparatus 失效
    发动机失火诊断仪

    公开(公告)号：US5954784A

    公开(公告)日：1999-09-21

    申请号：US895379

    申请日：1997-07-16

    申请人： Yoshihiro Inada ,  Youichi Kishimoto

    发明人： Yoshihiro Inada ,  Youichi Kishimoto

    IPC分类号： G01M15/04 ,  F02D41/14 ,  F02D41/34 ,  F02D45/00 ,  F02P17/12 ,  G01M15/11 ,  F02P17/00 ,  G01M15/00

    CPC分类号： F02D41/009 ,  F02D41/1498 ,  G01M15/11 ,  F02D2200/1015

    摘要： Start points of a misfire determining interval in the cylinders of an engine are specified by counting Pos signals starting from the appearance of a Ref signal in a specific cylinder. The Pos signals output from the Ref signal in each cylinder to the start point of the misfire determining interval are also counted as RGPHS after engine startup, and a shift of the misfire determining interval is detected by comparing for example the sum total of RGPHS for all cylinders and the sum total on the immediately preceding occasion. Correction of the misfire determining interval by a learnt value is stopped according to this shift. Preferably, correction of the misfire determining interval by the learnt value is restarted after making all misfire determining intervals the same by correcting for the shift.

    摘要翻译： 通过从特定气缸中的Ref信号的出现开始计数Pos信号来指定发动机气缸中的失火判定间隔的起点。 从每个气缸中的Ref信号输出到失火判定间隔的起始点的Pos信号在发动机启动后也被计入RGPHS，并且通过比较例如所有的RGPHS的总和来检测失火判定间隔的偏移 气瓶和前一时刻的总和。 根据该偏移，停止通过学习值对失火判定间隔进行校正。 优选地，通过校正偏移量使得所有失火确定间隔相同之后，通过学习值校正失火确定间隔。

    Trouble diagnostic apparatus
    7.
    发明授权
    Trouble diagnostic apparatus 失效
    故障诊断仪

    公开(公告)号：US5920008A

    公开(公告)日：1999-07-06

    申请号：US768198

    申请日：1996-12-17

    申请人： Youichi Kishimoto ,  Yoshihiro Inada

    发明人： Youichi Kishimoto ,  Yoshihiro Inada

    IPC分类号： G01M15/04 ,  F02D45/00 ,  G01M15/11 ,  G01M15/00

    CPC分类号： G01M15/11

    摘要： A diagnostic apparatus applicable to diagnosis of engine misfire. A diagnostic result is produced for each of at least two diagnoses related to each other. Only one of the diagnostic results having a higher degree of necessity is retained to indicate a malfunction.

    摘要翻译： 适用于诊断发动机失火的诊断装置。 对于彼此相关的至少两个诊断中的每一个产生诊断结果。 只有一个具有较高程度的诊断结果被保留以指示故障。

    Device for diagnosing oxygen sensor deterioration
    8.
    发明授权
    Device for diagnosing oxygen sensor deterioration 失效
    用于诊断氧传感器劣化的装置

    公开(公告)号：US5927260A

    公开(公告)日：1999-07-27

    申请号：US949324

    申请日：1997-10-03

    申请人： Youichi Kishimoto ,  Akio Katayama

    发明人： Youichi Kishimoto ,  Akio Katayama

    IPC分类号： F02D45/00 ,  F02D41/14 ,  F02D41/22

    CPC分类号： F02D41/1495 ,  F02D41/1456

    摘要： The air/fuel ratio of an engine is feedback controlled based upon the output of an oxygen sensor. The control includes proportional control and also correction of a control variable for this proportional control according to the actual air/fuel ratio. The period of the output signal of the oxygen sensor during feedback control is measured, a decision value is set corresponding to change in the control variable, and deterioration of the oxygen sensor is determined by comparing the period of the output signal with the decision value. By doing this, change in the control variable is prevented from exerting any influence upon the period of the output signal of the oxygen sensor, and the accuracy of deterioration diagnosis for the oxygen sensor is enhanced.

    摘要翻译： 基于氧传感器的输出，对发动机的空燃比进行反馈控制。 该控制包括比例控制，并根据实际的空气/燃料比对该比例控制的控制变量进行校正。 测量反馈控制期间氧传感器的输出信号的周期，对应于控制变量的变化设定判定值，并且通过将输出信号的周期与判定值进行比较来确定氧传感器的劣化。 通过这样做，可以防止控制变量的变化对氧传感器的输出信号的周期产生任何影响，提高氧传感器的劣化诊断精度。

    Engine cooling fan diagnosis device
    9.
    发明授权
    Engine cooling fan diagnosis device 失效
    发动机冷却风扇诊断装置

    公开(公告)号：US5612672A

    公开(公告)日：1997-03-18

    申请号：US529898

    申请日：1995-09-18

    申请人： Yukihiro Ino ,  Youichi Kishimoto ,  Atsushi Iochi ,  Makoto Shoji

    发明人： Yukihiro Ino ,  Youichi Kishimoto ,  Atsushi Iochi ,  Makoto Shoji

    IPC分类号： F01P7/04 ,  F01P11/16 ,  B60Q1/00

    CPC分类号： F01P7/048 ,  F01P2025/08 ,  F01P2025/13 ,  F01P2025/42 ,  F01P2025/64 ,  F01P2025/66 ,  F01P2031/20

    摘要： A vehicle engine temperature is detected, and a radiator fan fault warning is given so as to prevent engine overheating when this temperature rises to or above a preset determining value under a predetermined test conditions. Preferably, it is determined that the radiator fan has a fault when a temperature equal to or above this determining value holds for at least a predetermined time. More preferably, this determining value is set low while the vehicle is in motion. By providing these supplementary conditions, incorrect diagnosis of a fault in the radiator fan is prevented.

    摘要翻译： 检测到车辆发动机温度，并且在预定的测试条件下，当该温度上升到或高于预设的确定值时，给出散热器风扇故障警告，以防止发动机过热。 优选地，当等于或高于该确定值的温度至少保持预定时间时，确定散热器风扇具有故障。 更优选地，当车辆运动时，该确定值被设定为低。 通过提供这些补充条件，可以防止散热器风扇故障的错误诊断。