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30 条记录 (耗时 0.015 秒)

    Ignition timing controlling apparatus for internal combustion engine
    11.
    发明公开
    Ignition timing controlling apparatus for internal combustion engine 失效
    用于发动机点火正时。

    公开(公告)号：EP0155680A2

    公开(公告)日：1985-09-25

    申请号：EP85103233.4

    申请日：1985-03-20

    申请人： HITACHI, LTD.

    发明人： Kashimura, Yuichi ,  Sugiura, Noboru

    IPC分类号： F02P5/04 ,  G01L25/00

    CPC分类号： F02P5/1525 ,  F02P5/1522 ,  Y02T10/46

    摘要： @ An angle of an ignition timing for a specific cylinder is gradually advanced. A comparison is made between the previous output of a knock detection circuit for the cylinder having its angle advanced and the present output thereof by a comparator (107). The comparator (107) evaluates an occurrence of a knock when an output signal therefrom changes drastically. The signal (111) from the comparator (107) rewrites the knock evaluation reference value in each cylinder written in the memory (108). When an output from the knock sensor (101) is larger than that of the memory (108), an ignition timing retard angle signal is output from the comparator (109).
    As a result, the apparatus of the present invention can control ignition timing without errors due to the deterioration with age or manufacturing errors, as it can correct knocking detection sensibility of the apparatus.

    Air-fuel ratio control apparatus
    12.
    发明公开
    Air-fuel ratio control apparatus 失效
    空燃比控制装置

    公开(公告)号：EP0099545A3

    公开(公告)日：1985-07-31

    申请号：EP83106876

    申请日：1983-07-13

    申请人： HITACHI, LTD.

    发明人： Kashimura, Yuichi

    IPC分类号： F02D05/02 ,  F02D35/00

    CPC分类号： F02D41/1474

    摘要： In an air-fuel ratio control apparatus for controlling the air-fuel ratio of an engine (1) in accordance with the output of an O2 sensor (3), in response to the starting of the engine (1) the output voltage of the 0 2 sensor (3) is sampled at intervals of a unit time. The slope of the output voltage waveform of the O 2 sensor (3) is computed from the successively sampled values. The computed value is compared with a predetermined value indicative of a slope value attained when the 0 2 sensor (3) is activated and thus it is considered that the O 2 sensor (3) is activated when the computed value is greater than the predetermined value.

    Malfunction monitoring apparatus and method for secondary air supply system of internal combustion engine
    13.
    发明公开
    Malfunction monitoring apparatus and method for secondary air supply system of internal combustion engine 失效
    内燃机二次供风系统故障监测装置及方法

    公开(公告)号：EP0663516A3

    公开(公告)日：1995-12-13

    申请号：EP94309242.9

    申请日：1994-12-12

    申请人： HITACHI, LTD. ,  HITACHI AUTOMOTIVE ENGINEERING Co., Ltd.

    发明人： Agustin, Regelio B. ,  Kashimura, Yuichi ,  Ishii, Toshio

    IPC分类号： F01N3/22 ,  F01N7/00

    CPC分类号： F01N3/222 ,  F01N3/22 ,  F01N9/00 ,  F01N11/00 ,  F01N2550/14 ,  F01N2560/07 ,  F02D35/0038 ,  F02D41/221 ,  Y02T10/40 ,  Y02T10/47

    摘要： A malfunction monitoring apparatus for a secondary air supply system of an internal combustion engine includes an air flow sensor (2) for measuring the flow rate of an air flowing into an intake air path of the engine, a secondary air introducing path (32) disposed in the intake air path on the downstream side of a measuring position of the air flow rate for taking in a part of the air through the intake air path as a secondary air, a secondary air supply device (8) for supplying the secondary air to an exhaust gas path, and a control unit (3). The apparatus may further includes a pressure sensor (14) for detecting the internal pressure of an intake manifold. The control unit determines a secondary air flow rate (Qs) from a difference between a first air flow rate (Qa) measured by the air flow sensor when the secondary air is not being supplied from the secondary air introducing path to the exhaust gas path and a second air flow rate (Qb) measured by the air flow sensor when the secondary air is being'supplied, or a difference between an intake air flow rate (Qpm) of the engine determined on the basis of the internal pressure of the intake manifold detected by the pressure sensor and an air flow rate (Qhw) measured by the air flow sensor when the secondary air is being supplied. In the case where the determined secondary air flow rate is out of a predetermined allowable range, the secondary air supply device is judged as being abnormal.

    摘要翻译： 用于内燃机的二次空气供给系统的故障监视装置包括：空气流量传感器（2），其用于测量流入发动机的进气通路的空气的流量;二次空气引入通路（32），其被布置 在用于通过进气通路吸入一部分空气作为二次空气的空气流量的测量位置的下游侧的进气通路中，将二次空气供应到二次空气的二次空气供应装置（8） 排气路径和控制单元（3）。 该设备还可以包括用于检测进气歧管的内部压力的压力传感器（14）。 控制单元根据二次空气未从二次空气引入路径供应时的空气流量传感器测量的第一空气流量（Qa）与排气路径之间的差值来确定二次空气流量（Qs），以及 当二次空气供应时由空气流量传感器测量的第二空气流量（Qb）或基于进气歧管的内部压力确定的发动机的进气流量（Qpm）之间的差值 当二次空气被供应时由压力传感器检测的空气流量和由空气流量传感器测量的空气流量（Qhw）。 在确定的二次风量不在预定的允许范围内的情况下，判断二次空气供给装置异常。

    Malfunction monitoring apparatus and method for secondary air supply system of internal combustion engine
    14.
    发明公开
    Malfunction monitoring apparatus and method for secondary air supply system of internal combustion engine 失效
    Fehlerüberwachungsvorrichtungund -verfahrenfüreinSekundärluftzufuhrsystemvon Brennkraftmaschinen。

    公开(公告)号：EP0663516A2

    公开(公告)日：1995-07-19

    申请号：EP94309242.9

    申请日：1994-12-12

    申请人： HITACHI, LTD. ,  HITACHI AUTOMOTIVE ENGINEERING Co., Ltd.

    发明人： Agustin, Regelio B. ,  Kashimura, Yuichi ,  Ishii, Toshio

    IPC分类号： F01N3/22 ,  F01N7/00

    CPC分类号： F01N3/222 ,  F01N3/22 ,  F01N9/00 ,  F01N11/00 ,  F01N2550/14 ,  F01N2560/07 ,  F02D35/0038 ,  F02D41/221 ,  Y02T10/40 ,  Y02T10/47

    摘要： A malfunction monitoring apparatus for a secondary air supply system of an internal combustion engine includes an air flow sensor (2) for measuring the flow rate of an air flowing into an intake air path of the engine, a secondary air introducing path (32) disposed in the intake air path on the downstream side of a measuring position of the air flow rate for taking in a part of the air through the intake air path as a secondary air, a secondary air supply device (8) for supplying the secondary air to an exhaust gas path, and a control unit (3). The apparatus may further includes a pressure sensor (14) for detecting the internal pressure of an intake manifold. The control unit determines a secondary air flow rate (Qs) from a difference between a first air flow rate (Qa) measured by the air flow sensor when the secondary air is not being supplied from the secondary air introducing path to the exhaust gas path and a second air flow rate (Qb) measured by the air flow sensor when the secondary air is being'supplied, or a difference between an intake air flow rate (Qpm) of the engine determined on the basis of the internal pressure of the intake manifold detected by the pressure sensor and an air flow rate (Qhw) measured by the air flow sensor when the secondary air is being supplied. In the case where the determined secondary air flow rate is out of a predetermined allowable range, the secondary air supply device is judged as being abnormal.

    摘要翻译： 用于内燃机的二次空气供给系统的故障监视装置包括：空气流量传感器（2），用于测量流入发动机的进气通路的空气的流量;二次空气导入路径（32） 在通过作为二次空气的吸入空气路径吸入一部分空气的空气流量的测量位置的下游侧的进气道中，将二次空气供给到二次空气供给装置 排气路径和控制单元（3）。 该装置还可以包括用于检测进气歧管的内部压力的压力传感器（14）。 控制单元根据从二次空气导入路径向排气路径供给二次空气时由空气流量传感器测定的第一空气流量（Qa）与第二空气流量（Qa）之间的差分，决定二次空气流量（Qs） 当二次空气被供应时，由空气流量传感器测量的第二空气流量（Qb）或基于进气歧管的内部压力确定的发动机的进气流量（Qpm）之间的差 由压力传感器检测到的空气流量（Qhw），以及由二次空气供给时由空气流量传感器测得的空气流量（Qhw）。 在确定的二次空气流量超出预定的允许范围的情况下，二次空气供给装置被判定为异常。

    Multi-cylinder engine combustion state diagnosis apparatus and method
    15.
    发明公开
    Multi-cylinder engine combustion state diagnosis apparatus and method 失效
    Apparat und Verfahren zur Diagnose des Verbrennungszustands eines Mehrzylindermotors。

    公开(公告)号：EP0655616A2

    公开(公告)日：1995-05-31

    申请号：EP94118786.6

    申请日：1994-11-29

    申请人： HITACHI, LTD.

    发明人： Kashimura, Yuichi ,  Takaku, Yutaka ,  Ishii, Toshio

    IPC分类号： G01M15/00

    CPC分类号： G01M15/11

    摘要： A prescribed threshold level Dth for misfire judgment for each cylinder is recorded in a misfire judgment level retaining means 102 of a misfire judgment processing section 100. A combustion state parameter operation means 106 measures revolution speed of a multi-cylinder engine for each cylinder, and attains as a combustion state parameter a differential in revolution speed between a specific cylinder and other cylinders. In a misfire judgment level correction means 104, a plurality of combustion state parameters concerning the specific cylinder is attained, and the above-mentioned threshold level Dth is corrected as a function of the parameter. A misfire judgment processing means 108 compares the combustion state parameter with the threshold level Dth and diagnoses a combustion state in the specific cylinder. Namely, the corresponding cylinder is judged to be misfire when the combustion state parameter of the specific cylinder exceeds the prescribed parameter.

    摘要翻译： 燃气状态参数运算机构106对每个气缸的多缸发动机的转速进行测量，并且，对于每个气缸的失火判断水平Dth记录在失火判定处理单元100的失火判断水平保持机构102中。 作为燃烧状态参数获得特定气缸和其它气缸之间的转速差。 在失火判断水平校正装置104中，获得关于特定气缸的多个燃烧状态参数，并且根据参数校正上述阈值水平Dth。 失火判断处理装置108将燃烧状态参数与阈值水平Dth进行比较，并诊断特定气缸中的燃烧状态。 也就是说，当特定气缸的燃烧状态参数超过规定参数时，相应的气缸被判定为失火。