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1.发明公开
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
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。
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2.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
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。
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公开(公告)号：EP0155680B1
公开(公告)日：1991-01-02
申请号：EP85103233.4
申请日：1985-03-20
申请人： HITACHI, LTD.
发明人： Kashimura, Yuichi , Sugiura, Noboru
CPC分类号： F02P5/1525 , F02P5/1522 , Y02T10/46
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4.发明公开Electronic control apparatus for use in automobile 失效Kraftfahrzeugen的Elektronische Steuerungsvorrichtung zur Verwendung。
公开(公告)号：EP0309986A1
公开(公告)日：1989-04-05
申请号：EP88115880.2
申请日：1988-09-27
申请人： HITACHI, LTD.
CPC分类号： F02D41/3005 , F01P2050/30 , F02D2400/18
摘要： An electronic control apparatus for use in an automobile has a base (14) of a good thermal conductivity having one side disposed in contact with engine cooling water. Semiconductor devices (8, 9, 10, 22, 90) are disposed on the other side of the base so that the semiconductor devices are maintained at the temperature of the engine cooling water, whereby the influence of high ambient air temperature to the semiconductor devices is reduced.
摘要翻译： 一种用于汽车的电子控制装置具有具有良好导热性的底座（14），其一侧设置成与发动机冷却水接触。 半导体器件（8,9,10,22,90）设置在基座的另一侧，使得半导体器件保持在发动机冷却水的温度，由此高的环境空气温度对半导体器件的影响 降低了。
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5.发明公开
公开(公告)号：EP0047394A1
公开(公告)日：1982-03-17
申请号：EP81106002.9
申请日：1981-07-30
申请人： Hitachi, Ltd.
发明人： Kashimura, Yuichi , Suda, Seiji , Sugiura, Noboru
CPC分类号： F02P5/152 , F02P5/1526 , G01L23/225 , Y02T10/46
摘要： There is disposed a knock sensor for detecting a knock signal of an engine. The output of the knock sensor is applied to a bandpass filter for bandpassing only the knock signal. The output of the bandpass filter is applied to an automatic gain control circuit for variably controlling the gain of the knock signal. The output of the automatic gain control circuit is applied to an averaging circuit via a maximum clamp circuit. A comparator produces an output to an integration circuit of the next stage when the output of the bandpass filter becomes greater than that of the averaging circuit. An ignition control device for controlling the spark timing of an ignition coil ignites the ignition coil by the output from a pick-up coil and that of the integration circuit and delivers a feedback signal to the integration circuit.
摘要翻译： 设置有用于检测发动机的爆震信号的爆震传感器。 爆震传感器的输出应用于带通滤波器，仅用于敲击敲击信号。 带通滤波器的输出被施加到用于可变地控制爆震信号的增益的自动增益控制电路。 自动增益控制电路的输出通过最大钳位电路施加到平均电路。 当带通滤波器的输出变得大于平均电路的输出时，比较器产生到下一级的积分电路的输出。 用于控制点火线圈的火花正时的点火控制装置通过来自拾取线圈的输出和积分电路的输出点燃点火线圈，并将反馈信号传递到积分电路。
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7.发明公开
公开(公告)号：EP0655616A3
公开(公告)日：1995-11-22
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.
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公开(公告)号：EP0099545B1
公开(公告)日：1988-03-09
申请号：EP83106876.2
申请日：1983-07-13
申请人： HITACHI, LTD.
发明人： Kashimura, Yuichi
CPC分类号： F02D41/1474
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公开(公告)号：EP0146668A3
公开(公告)日：1987-01-21
申请号：EP84103811
申请日：1981-07-30
申请人： HITACHI, LTD.
发明人： Kashimura, Yuichi , Suda, Seiji , Sugiura, Noboru
IPC分类号： G01L23/22
CPC分类号： F02P5/152 , F02P5/1526 , G01L23/225 , Y02T10/46
摘要： The invention refers to an engine knock control apparatus including a knock sensor (100) detecting engine knocking and producing a knock signal as output and an amplifier amplifying the knock signal and is characterized by a knock signal clamping circuit (116A) coupled to the knock sensor (100) and clamping the output signal of the knock sensor (100) at a predetermined maximum level and preventing an abnormal rise of its signal voltage, an integrator (117) receiving the output signal from the clamping circuit (116A) and providing an integrated output signal and a comparator (118) receiving and comparing the integrated output signal and the knock signal which provides a spark timing control signal to an ignition control device (103) controlling the ignition timing of an ignition coil (135).
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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
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.
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