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。

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。

公开(公告)号：EP0641920A1

公开(公告)日：1995-03-08

申请号：EP94114042.8

申请日：1994-09-07

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

发明人： Numata, Akihito ,  Mukaihira, Takashi ,  Ishii, Toshio ,  Takaku, Yutaka ,  Kawano, Kazuya

IPC分类号： F01N7/00 ,  F02D41/22 ,  F02D41/14

CPC分类号： F02D41/1495 ,  F01N11/007 ,  F01N2550/02 ,  F02D41/0235 ,  F02D41/1441 ,  F02D41/222 ,  F02D2041/1432 ,  Y02T10/40 ,  Y02T10/47

摘要： Provided is an internal combustion engine (1) malfunction diagnosis apparatus capable of diagnosising the deterioration of an internal combustion engine (1) with a high accuracy and capable of diagnosising deterioration of a fluctuation factor detection section of the engine (1) with a high accuracy in irrespective of the engine speed.
According to one embodiment of the present invention, there is provided a malfunction diagnosis apparatus for an internal combustion engine comprises: a crank angle detection sensor (25) for detecting a crank angle of the internal combustion engine (1); a fluctuation factor measurement means (3) for measuring a state of a fluctuation factor of the internal combustion engine; an angular-based data sampling section (14A,14B) for sampling data of an output signal from the fluctuation factor measurement means (3) at a predetermined rotation angle of a crank shaft in accordance with a crank angle signal from the crank angle detection sensor (25); a malfunction judgement section (17) for judging a malfunction of the internal combustion engine (1) on the basis of data sampled by the angular-based data sampling section (14A,14B); a time-based data sampling section (21) for sampling an output signal from the fluctuation factor measurement means (3) at every lapse of a predetermined constant time; and a fluctuation factor measurement means deterioration judgement section (28) for judging deterioration of the fluctuation factor measurement means (3) on the basis of data sampled by the time-based data sampling section (21).

摘要翻译： 提供一种能够高精度地诊断内燃机（1）的劣化的内燃机（1）故障诊断装置，能够高精度地诊断发动机（1）的变动率检测部的劣化 无论发动机转速如何。 根据本发明的一个实施例，提供一种用于内燃机的故障诊断装置，包括：用于检测内燃机（1）的曲柄角的曲柄角检测传感器（25）; 用于测量内燃机的波动因数的状态的波动因数测量装置（3）; 根据来自曲柄角检测传感器的曲柄角信号，以曲轴的预定旋转角度对来自波动因数测量装置（3）的输出信号的数据进行采样的角度数据采样部分（14A，14B） （25）; 根据由基于角度的数据取样部（14A，14B）采样的数据，判断内燃机（1）的故障的故障判断部（17）。 时间数据取样部（21），用于在经过预定的恒定时间时从所述起伏因数测量装置（3）采样输出信号; 以及基于由基于时间的数据采样部分（21）采样的数据来判断波动因数测量装置（3）的恶化的波动因数测量装置劣化判断部分（28）。

公开(公告)号：EP1128033A3

公开(公告)日：2003-11-05

申请号：EP01103674.6

申请日：2001-02-23

申请人： Hitachi, Ltd.

发明人： Nakagawa, Shinji ,  Ohsuga, Minoru ,  Ishii, Toshio ,  Takaku, Yutaka ,  Katogi, Kozo

IPC分类号： F01N11/00 ,  F02D41/02 ,  F01N3/08

CPC分类号： F01N3/0835 ,  F01N11/00 ,  F01N11/007 ,  F01N13/009 ,  F01N2550/03 ,  F01N2570/12 ,  F02D41/027 ,  F02D41/1441 ,  F02D41/1456 ,  F02D41/1495 ,  F02D2200/0802 ,  Y02T10/20 ,  Y02T10/47

摘要： A diagnosis system for an engine (100) including an exhaust pipe (10), a hydrocarbon (HC) absorbent (11) arranged within the exhaust pipe (10), an upstream air/fuel ratio sensor (12) arranged upstream of the HC absorbent (11) and detecting a wide range air/fuel ratio of an exhaust gas, a downstream air/fuel ratio sensor (13) arranged downstream of the HC absorbent (11) and detecting rich or lean with respect to stoichiometric air/fuel ratio of the exhaust gas, and a control unit (16), the control unit (16) includes means (31) for correcting an air/fuel ratio upstream of the HC absorbent (11), means (30) for correcting an air/fuel ratio downstream of the HC absorbent (11), and means (28) for predicting a HC absorbing amount of the HC absorbent (11), the means (31) for correcting the air/fuel ratio upstream of the HC absorbent (11) correcting and controlling an output value of the upstream air/fuel ratio sensor (12) toward lean, the means (28) for predicting the HC absorbing amount of the HC absorbent (11) predicting an absorbing performance of the HC absorbent (11) on the basis of a difference between an output value of the upstream air/fuel ratio sensor (12) and a predetermined value C during a period from a timing where a temperature of the HC absorbent (11) becomes higher than or equal to a predetermined value A and the output value of the upstream air/fuel ratio sensor (12) is corrected and controlled toward lean to a timing where the temperature becomes lower than or equal to a predetermined value B.

公开(公告)号：EP1223321A2

公开(公告)日：2002-07-17

申请号：EP02000178.0

申请日：2002-01-09

申请人： Hitachi, Ltd.

发明人： Abo, Matsuharu ,  Tanabe, Yoshiyuki ,  Fujii, Hiroshi ,  Onishi, Koji ,  Ishii, Toshio ,  Fujieda, Mamoru

IPC分类号： F02D33/02

CPC分类号： F02B23/104 ,  F02B2075/125 ,  F02D13/0219 ,  F02D13/0246 ,  F02D13/0261 ,  F02D41/402 ,  F02D2041/001 ,  F02D2041/0015 ,  F02D2041/389 ,  F02D2250/38 ,  F02F2001/245 ,  Y02T10/123 ,  Y02T10/125 ,  Y02T10/18 ,  Y02T10/44

摘要： The invention relates to an internal combustion engine with direct injection and supercharging in which the ignitability deteriorates because the density of the fuel at the spray center becomes excessive due to the shrinkage of the fuel spray under the supercharging. As a result, the density of the smoke and the hydrocarbon exhaust rate increase.
The mixture of the fuel and the air under the supercharging is promoted by the control of a TCV installed in the suction port which is a divided spray and air flow generation mechanism and by the valve timing control of the suction and exhaust valve, etc.

摘要翻译： 本发明涉及一种具有直接喷射和增压的内燃机，其中由于在增压下的燃料喷雾的收缩，喷雾中心处的燃料密度变得过大，其中点火性劣化。 结果，烟气的密度和碳氢化合物的排放率增加。 燃料和增压下的空气混合通过控制安装在吸入口中的TCV来进行，该吸入口是分开的喷雾和空气流产生机构，并且通过抽吸和排气阀的气门正时控制 等等

公开(公告)号：EP0326193A3

公开(公告)日：1989-10-25

申请号：EP89105816.6

申请日：1986-02-28

申请人： HITACHI, LTD.

发明人： Kashimura, Yuichi ,  Sugiura, Noboru ,  Ishii, Toshio ,  Shida, Masami ,  Teragakiuchi, Akira ,  Mouri, Yasunori

IPC分类号： F02P5/15 ,  G01L23/22

CPC分类号： F02P5/1523 ,  F02B1/04 ,  F02P5/1521 ,  F02P5/1522 ,  F02P5/1525 ,  Y02T10/46

摘要： The invention relates to an ignition timing control method and apparatus for an internal combustion engine having a plurality of cylinders. The apparatus includes a knock sensor (401) for detecting a knocking condition in the engine, sensors (40, 50, 60) for detecting other operating conditions of the engine, a microprocessor unit (12) for receiving signals from the sensors (40, 50, 60) to determine a basic ignition timing of the engine and generate an ignition timing control signal, and a power transistor circuit (74) responsive to the ignition timing control signal from the microprocessor unit (12) to switch on and off the primary current in an ignition coil and generate a high-voltage ignition signal. The microprocessor unit (12) has a control function of retarding the basic ignition timing a predetermined amount in response to a knock detected during an ignition operation at the basic ignition timing and another control function of gradually restoring the retarded ignition timing to the basic ignition timing in response to a knock detected during an ignition operation at the retarded ignition timing from the basic ignition timing. The apparatus includes control means (12) responsive to the occurrence of a knock to correct the basic ignition timing for each cylinder of the engine whereby the basic ignition timing of each cylinder is controlled to be retarded in response to the detection of a knock in each cylinder.

公开(公告)号：EP0193896A1

公开(公告)日：1986-09-10

申请号：EP86102640.9

申请日：1986-02-28

申请人： HITACHI, LTD.

发明人： Kashimura, Yuichi ,  Sugiura, Noboru ,  Ishii, Toshio ,  Shida, Masami ,  Teragakiuchi, Akira ,  Mouri, Yasunori

IPC分类号： F02P5/15

CPC分类号： F02P5/1523 ,  F02B1/04 ,  F02P5/1521 ,  F02P5/1522 ,  F02P5/1525 ,  Y02T10/46

摘要： The invention relates to an ignition timing control method and apparatus for an internal combustion engine having a plurality of cylinders.
The apparatus includes a knock sensor (401) for detecting a knocking condition in the engine, sensors (40, 50, 60) for detecting other operating conditions of the engine, a microprocessor unit (12) for receiving signals from the sensors (40, 50, 60) to determine a basic ignition timing of the engine and generate an ignition timing control signal, and a power transistor circuit (74) responsive to the ignition timing control signal from the microprocessor unit (12) to switch on and off the primary current in an ignition coil and generate a high-voltage ignition signal. The microprocessor unit (12) has a control function of retarding the basic ignition timing a predetermined amount in response to a knock detected during an ignition operation at the basic ignition timing and another control function of gradually restoring the retarded ignition timing to the basic ignition timing in response to a knock detected during an ignition operation at the retarded ignition timing from the basic ignition timing. The apparatus includes control means (12) responsive to the occurrence of a knock to correct the basic ignition timing for each cylinder of the engine whereby the basic ignition timing of each cylinder is controlled to be retarded in response to the detection of a knock in each cylinder.

摘要翻译： 本发明涉及在用于在内燃机具有的气缸的多个点火正时控制方法和装置。 ... 该设备包括用于在发动机检测爆震的条件，用于从接收信号检测发动机，一个微处理单元（12）的其它操作条件的爆震传感器（401），传感器（40，50，60） 所述传感器（40，50，60），以确定的矿井发动机的基本点火正时，并生成对点火正时控制信号，和功率晶体管电路（74），响应于来自微处理器单元中的点火正时控制信号（12）以切换 和关闭在点火线圈初级电流中并产生高压点火信号。 微处理单元（12）具有延迟基本点火响应于在对基本点火时间上点火时检测到的操作的爆震和的延迟的点火正渐渐地恢复到所述基本点火正时的另一控制功能的时序一预定量的控制功能 响应于在从所述基本点火正时的延迟的点火正手术点火期间检测到的爆震。 该设备包括控制装置，响应于爆震的发生，以校正所述发动机，由此每个气缸的基本点火正时被控制为延迟响应于检测爆震的每个的每个气缸的基本点火定时（12） 缸。

公开(公告)号：EP0115827A2

公开(公告)日：1984-08-15

申请号：EP84100824.6

申请日：1984-01-26

申请人： HITACHI, LTD.

发明人： Tabuchi, Kenji ,  Shida, Masami ,  Ishii, Toshio

IPC分类号： F02P5/04

CPC分类号： F02P5/1502 ,  F02D41/062 ,  F02P5/1506 ,  Y02T10/46

摘要： In a method of controlling a 4-stroke cycle internal combustion engine for automobile, when only a positional signal, which is generated each time the crank shaft of engine is rotated once, is first generated after the start of engine, only the fuel injection control is immediately made. When both the positional signal and a reference cylinder signal which is generated each time the crank shaft is rotated twice are generated after the start of engine, the fuel injection control and ignition control are made.

公开(公告)号：EP1229224B1

公开(公告)日：2004-12-15

申请号：EP02007279.9

申请日：1994-04-26

申请人： Hitachi, Ltd.

发明人： Mukaihira, Takashi ,  Ishii, Toshio ,  Miura, Kiyoshi ,  Kawano, Kazuya

IPC分类号： F01N11/00

CPC分类号： F01N9/005 ,  F01N11/00 ,  F01N11/002 ,  F01N11/005 ,  F01N11/007 ,  F01N2550/02 ,  F01N2560/025 ,  F01N2560/06 ,  F01N2560/14 ,  F02D41/1441 ,  F02D41/1446 ,  F02D41/1454 ,  F02D41/22 ,  F02D2041/1415 ,  F02D2200/0802 ,  Y02T10/47

公开(公告)号：EP1229224A3

公开(公告)日：2002-11-20

申请号：EP02007279.9

申请日：1994-04-26

申请人： Hitachi, Ltd.

发明人： Mukaihira, Takashi ,  Ishii, Toshio ,  Miura, Kiyoshi ,  Kawano, Kazuya

IPC分类号： F01N11/00

CPC分类号： F01N9/005 ,  F01N11/00 ,  F01N11/002 ,  F01N11/005 ,  F01N11/007 ,  F01N2550/02 ,  F01N2560/025 ,  F01N2560/06 ,  F01N2560/14 ,  F02D41/1441 ,  F02D41/1446 ,  F02D41/1454 ,  F02D41/22 ,  F02D2041/1415 ,  F02D2200/0802 ,  Y02T10/47

摘要： A diagnostic system in which the accuracy of the diagnosis of the deterioration state of a catalyst (40 in Fig. 1) in a catalytic converter (4) for cleaning the exhaust gas of an internal combustion engine (2) is enhanced without incurring a rise in cost. The temperature of the catalyst (40) is estimated using the operating-state signal (for example, the flow rate of intake air Q a or the width 120 of a fuel injection pulse) of the engine (2) by a diagnostic device (8). The conversion efficiency of the catalyst (40) calculated from the outputs of oxygen sensors (6a, 6b) is corrected using the estimated temperature by the diagnostic device (8). The deterioration state of the catalyst (40) is diagnosed on the basis of the corrected temperature by the diagnostic device (8).