公开(公告)号：US5861551A

公开(公告)日：1999-01-19

申请号：US886467

申请日：1997-07-01

Applicant: Shingo Morita ,  Wataru Fukui

Inventor： Shingo Morita ,  Wataru Fukui

IPC: F02B77/08 ,  F02D35/02 ,  F02D41/14 ,  F02D45/00 ,  F02P17/12 ,  G01M15/04 ,  G01M15/00

CPC classification number: G01M15/042 ,  F02B77/08 ,  F02B77/085 ,  F02P17/12 ,  F02D35/021 ,  F02P2017/125

Abstract: An combustion state detecting apparatus for an internal-combustion engine is equipped with: an ignition coil (4) for applying a high voltage (V2) for igniting to the spark plugs (8a through 8d) of the cylinders of an internal-combustion engine; an ionic current detecting circuit for applying a bias voltage (VBi) to at least one spark plug to detect ionic currents (ia, ib) flowing via the spark plug which has just been subjected to ignition control; comparator circuits (14a, 14b) which compare detected ionic current signals (Eia, Eib) with threshold values (TH1, TH2) and turn them into ionic current pulses (Gia, Gib); and an ECU (2A) which drives the ignition coil according to a crank angle signal (SGT) and determines the combustion state of the internal-combustion engine. The ECU changes the threshold values for each ignition control and judges the combustion state according to the respective threshold values and the state in which the ionic current pulses are generated.

Abstract translation: 一种用于内燃机的燃烧状态检测装置配备有：点火线圈（4），用于施加用于点燃内燃机的气缸的火花塞（8a至8d）的高电压（V2）; 离子电流检测电路，用于向至少一个火花塞施加偏置电压（VBi），以检测流经刚刚经过点火控制的火花塞的离子电流（ia，ib）; 将检测到的离子电流信号（Eia，Eib）与阈值（TH1，TH2）进行比较并将其转换成离子电流脉冲（Gia，Gib）的比较器电路（14a，14b）; 以及根据曲柄角信号（SGT）驱动点火线圈并确定内燃机的燃烧状态的ECU（2A）。 ECU改变每个点火控制的阈值，并根据各自的阈值和产生离子电流脉冲的状态来判断燃烧状态。

公开(公告)号：US5789925A

公开(公告)日：1998-08-04

申请号：US674758

申请日：1996-07-02

Applicant: Masahiro Yokotani ,  Wataru Fukui ,  Naoki Hiraoka ,  Shunichi Wada

Inventor： Masahiro Yokotani ,  Wataru Fukui ,  Naoki Hiraoka ,  Shunichi Wada

IPC: G01P3/42 ,  G01B21/22 ,  G01D3/08 ,  G01D5/12 ,  G01D5/18 ,  G01P3/48 ,  G01P3/487 ,  G01P21/02 ,  G01R31/02 ,  G01B7/30 ,  G08B29/00

CPC classification number: G01P3/487 ,  G01D3/08 ,  G01P21/02 ,  G01P3/4802

Abstract: A sensor system includes a single sensor means, two sensed signal processing circuits for processing the output signal of the sensor means, both the signal processing circuits being substantially equal in circuit construction, and an abnormality detecting circuit for detecting an abnormality on the basis of the difference between the output signals of the two sensed signal processing circuits.

Abstract translation: 传感器系统包括单个传感器装置，用于处理传感器装置的输出信号的两个感测信号处理电路，两个信号处理电路在电路结构上基本相等;以及异常检测电路，用于基于 两个感测信号处理电路的输出信号之间的差异。

公开(公告)号：US5755206A

公开(公告)日：1998-05-26

申请号：US742495

申请日：1996-11-01

Applicant: Yasuhiro Takahashi ,  Wataru Fukui

Inventor： Yasuhiro Takahashi ,  Wataru Fukui

IPC: F02D35/02 ,  F02D37/02 ,  F02D41/04 ,  F02D41/14 ,  F02D41/34 ,  F02D43/00 ,  F02D45/00 ,  F02P5/152 ,  F02P5/153 ,  F02P17/12 ,  F02P5/14

CPC classification number: F02D35/021 ,  F02D37/02 ,  F02D2200/1004 ,  F02D2250/18

Abstract: A control apparatus for an internal combustion engine capable of optimizing a control parameter for the engine on the basis of information concerning combustion state of the engine by making use of a detected ion current which changes with a high sensitivity in dependence on combustion state within an engine cylinder, for thereby realizing an engine operation control to reduce fuel cost without degrading a control performance for obtaining a high engine output and drivability of a motor vehicle equipped with the engine. The apparatus includes an ion current detecting means (12) for detecting an amount of ions generated within an engine cylinder under control in terms of an ion current (i) immediately after ignition for the engine cylinder, a decision-destined value detecting means (2) for determining a decision-destined value corresponding to a combustion state of the engine cylinder on the basis of a detected value (Ei) of the ion current, and a correction control means (2) for correcting a control parameter for controlling operation of the internal combustion engine when result of comparison of the decision-destined value with a reference value therefor indicates at least one of lowering in output power of the internal combustion engine and degradation in the combustion state in the engine cylinder.

Abstract translation: 一种用于内燃机的控制装置，其能够根据与发动机的燃烧状态有关的信息来优化发动机的控制参数，该检测的离子电流根据发动机内的燃烧状态以高灵敏度而变化 从而实现发动机操作控制以降低燃料成本，而不降低控制性能，以获得发动机配备的机动车辆的高发动机输出和驾驶性能。 该装置包括：离子电流检测装置，用于检测发动机气缸内根据发动机气缸立即点火后的离子电流（i）控制的离子产生量;判定目标值检测装置（2） ），用于基于所述离子电流的检测值（Ei）来确定与所述发动机气缸的燃烧状态相对应的判定目标值;以及校正控制装置（2），用于校正用于控制所述离子电流的操作的控制参数 内燃机在判定目标值与其参考值进行比较的结果时，表示内燃机的输出功率的降低和发动机气缸内的燃烧状态的降低中的至少一个。

公开(公告)号：US5747670A

公开(公告)日：1998-05-05

申请号：US742489

申请日：1996-11-01

Applicant: Yasuhiro Takahashi ,  Wataru Fukui

Inventor： Yasuhiro Takahashi ,  Wataru Fukui

IPC: F02P17/12 ,  G01L23/22

CPC classification number: F02P17/12

Abstract: A combustion state detecting apparatus for an internal combustion engine capable of detecting combustion state in the engine with high accuracy and reliability by deriving an ion current detection signal which is based on only an ion current by canceling out a leakage current component. The apparatus includes a high-voltage diode (11a, . . . , 11d) connected to a spark plug (8a, . . . , 8d), a bias voltage applying circuit (9) for applying a bias voltage (VBi) to the spark plug by way of the high-voltage diode, an ion current detecting circuit (12) for detecting an ion current (i) flowing through the spark plug immediately after ignition to thereby output an ion current detection signal (Ei), an electronic control unit (2) for determining combustion state of the engine on the basis of the ion current detection signal (Ei), and a leakage current compensating means (21, 22) connected in parallel with the ion current detecting means (12). The leakage current compensating means supplies a compensating current (ic) for canceling out a leakage current component (iL) flowing along a same path as the ion current (i). The ion current detecting means outputs as the ion current detection signal only an ion current signal component (io) from which the leakage current has been eliminated.

Abstract translation: 一种内燃机的燃烧状态检测装置，其能够通过取消基于离子电流的离子电流检测信号，通过抵消泄漏电流成分，以高精度和可靠性检测发动机的燃烧状态。 该装置包括连接到火花塞（8a，...，8d）的高压二极管（11a，...，11d），偏置电压施加电路（9），用于将偏置电压（VBi）施加到 通过高压二极管的火花塞;离子电流检测电路（12），其用于检测在点火后立即流过火花塞的离子流（i），从而输出离子电流检测信号（Ei），电子控制 用于基于离子电流检测信号（Ei）确定发动机的燃烧状态的单元（2）和与离子电流检测装置（12）并联连接的泄漏电流补偿装置（21,22）。 泄漏电流补偿装置提供用于消除沿着与离子电流（i）相同的路径流动的漏电流分量（iL）的补偿电流（ic）。 离子电流检测装置仅作为离子电流检测信号输出离开电流信号分量（io），从该离子电流信号分量已经消除了泄漏电流。

公开(公告)号：US5699769A

公开(公告)日：1997-12-23

申请号：US636144

申请日：1996-04-22

Applicant: Masanobu Uchinami ,  Koichi Yamane ,  Wataru Fukui

Inventor： Masanobu Uchinami ,  Koichi Yamane ,  Wataru Fukui

IPC: F02P3/04 ,  F02D41/34 ,  F02D43/00 ,  F02P5/15 ,  F02P7/077 ,  F02P7/067

CPC classification number: F02D41/009 ,  F02P7/077

Abstract: A controller for a four-stroke cycle internal-combustion engine, which has a single sensor mounted on a crankshaft and employs a single sequence of position signal pulses corresponding to crank angles, achieves reduced cost and higher accuracy even for an engine with an odd number of cylinders. For each revolution of the crankshaft, a position signal pulse is issued from the sensor mounted on the crankshaft; the position signal pulse includes a reference position signal pulse in a number which is a multiple of N of the number of cylinders and a cylinder identifying signal pulse for a particular cylinder every time the crankshaft rotates. A control means includes a reference position signal generating section for identifying the reference position of each cylinder from the position signal pulse and for generating the reference position signal; a cylinder identifying section for identifying each cylinder from the position signal pulse and for generating a cylinder identifying signal; and a timing control section for generating a control signal for each cylinder in accordance with the reference position signal and the cylinder identifying signal. The control signal controls at least the ignition timing or the fuel injection timing of each cylinder.

Abstract translation: 用于四冲程内燃机的控制器，其具有安装在曲轴上的单个传感器并且采用对应于曲柄角的单个位置信号脉冲序列，即使对于具有奇数的发动机也能实现降低的成本和更高的精度 的气瓶。 对于曲轴的每一转，从安装在曲轴上的传感器发出位置信号脉冲; 位置信号脉冲包括一个数量的参考位置信号脉冲，该数量是每个气缸数的N的倍数，并且每当曲轴旋转时，该特定气缸的气缸识别信号脉冲。 控制装置包括基准位置信号发生部分，用于从位置信号脉冲识别每个气缸的基准位置，并用于产生参考位置信号; 缸识别部分，用于从位置信号脉冲识别每个气缸，并用于产生气缸识别信号; 以及定时控制部分，用于根据参考位置信号和气缸识别信号产生每个气缸的控制信号。 控制信号至少控制每个气缸的点火正时或燃料喷射正时。

公开(公告)号：US5632246A

公开(公告)日：1997-05-27

申请号：US602354

申请日：1996-02-16

Applicant: Wataru Fukui ,  Yasukazu Koezuka

Inventor： Wataru Fukui ,  Yasukazu Koezuka

IPC: F02D45/00 ,  F02D41/34 ,  G01D5/245 ,  F02P7/067 ,  F02P11/00

CPC classification number: F02D41/009 ,  G01D5/2457

Abstract: A control apparatus for an internal combustion engine which is capable of performing engine cylinder identification rapidly, easily and inexpensively, while capable of performing a backup control upon occurrence of abnormality in a first signal series containing an angular position signal. The control apparatus includes a first signal detector for generating a first signal series in synchronism with a rotating shaft of the engine, a second signal detector for generating a second signal series in synchronism with the rotating shaft and a control means for controlling parameter on the basis of the first and second signal series. The first signal series includes an angular position signal and a constant level signal corresponding to a reference position for a specific cylinder group. The second signal series includes cylinder identifying signal having a pulse for a given one of the cylinders which differs from those for the other cylinders and a pulse edge falling within the duration of the constant level signal. The control means includes a means for detecting the reference positions for the individual cylinders on the basis of the pulse edge of the cylinder identifying signal and the angular position signal, a means for identifying the cylinders on the basis of the second signal series, a means for arithmetically determining control timings for controlling the parameter on the basis of the results of the cylinder identification and the second signal series, and an abnormality decision means for deciding a fault of the signal series.

Abstract translation: 一种用于内燃机的控制装置，其能够快速，容易且廉价地进行发动机气缸识别，同时能够在包含角位置信号的第一信号序列中发生异常时执行备用控制。 控制装置包括：第一信号检测器，用于产生与发动机的转轴同步的第一信号序列;第二信号检测器，用于产生与旋转轴同步的第二信号序列;以及控制装置，用于在基础上控制参数 的第一和第二信号系列。 第一信号系​​列包括角位置信号和对应于特定气缸组的基准位置的恒定电平信号。 第二信号系列包括具有针对给定一个气缸的脉冲的气缸识别信号，其不同于其它气缸的脉冲，以及在恒定电平信号的持续时间内的脉冲沿。 控制装置包括用于根据气缸识别信号和角度位置信号的脉冲边缘检测各个气缸的参考位置的装置，用于基于第二信号系列识别气缸的装置， 用于根据汽缸识别和第二信号序列的结果算术地确定用于控制参数的控制定时;以及异常判定装置，用于判定信号序列的故障。

公开(公告)号：US5621320A

公开(公告)日：1997-04-15

申请号：US534937

申请日：1995-09-28

Applicant: Masahiro Yokotani ,  Fumito Uemura ,  Wataru Fukui

Inventor： Masahiro Yokotani ,  Fumito Uemura ,  Wataru Fukui

IPC: G01R33/09 ,  H01L43/08 ,  H01L43/02

CPC classification number: G01R33/09

Abstract: A magnetoresistance type sensor device for detecting an angle or strength of a magnetic field applied thereto includes first to fourth magnetoresistance elements interconnected so as to constitute a Wheatstone bridge circuit, and a differential amplifier circuit having inputs for receiving a first potential from a first junction formed between a pair of elements and a second potential from a second junction formed between paired elements for thereby generating a differential amplitude voltage signal indicative of the angle or strength of the magnetic field. The magnetoresistance elements are formed of a material having a same composition and dimensioned such that change of the resistance of the first and second magnetoresistance elements brought about by a change in the angle or strength of the applied magnetic field differs from corresponding change of the resistance of the third and fourth magnetoresistance elements, and that the changes of the resistances of the first and second magnetoresistance elements are equal to each other with the changes of resistances of the third and fourth magnetoresistance elements being equal to each other. The temperature characteristics of the magnetoresistance elements are equalized. The differential amplitude voltage signal generated by the differential amplifier is compensated for in respect to the temperature variations.

Abstract translation: 用于检测施加到其上的磁场的角度或强度的磁阻型传感器装置包括互连以形成惠斯登电桥电路的第一至第四磁阻元件，以及具有用于从形成的第一结接收第一电位的输入的差分放大器电路 在成对元件之间形成的一对元件和来自第二连接点的第二电位之间，从而产生指示磁场的角度或强度的差分振幅电压信号。 磁阻元件由具有相同组成和尺寸的材料形成，使得由施加的磁场的角度或强度的变化引起的第一和第二磁阻元件的电阻的变化与相应的电阻变化不同 第三和第四磁阻元件，并且第三和第四磁阻元件的电阻的变化彼此相等，第一和第二磁阻元件的电阻的变化彼此相等。 磁阻元件的温度特性相等。 差分放大器产生的差分振幅电压信号相对于温度变化进行补偿。

公开(公告)号：US5575259A

公开(公告)日：1996-11-19

申请号：US578025

申请日：1995-12-26

Applicant: Wataru Fukui ,  Yutaka Ohashi

Inventor： Wataru Fukui ,  Yutaka Ohashi

IPC: F02B75/02 ,  F02D43/00 ,  F02P5/04 ,  F02P5/15 ,  F02P11/02 ,  F02P5/00

CPC classification number: F02P5/045 ,  F02P11/02 ,  F02P5/1506 ,  F02B2075/027 ,  Y02T10/46

Abstract: A controller for a four-stroke cycle internal-combustion engine does not incur an operation failure in an engine even at the startup when injectors are placed under injection control at the same time and a cylinder group to be ignited is placed under ignition control at the same time. The controller for the four-stroke cycle internal-combustion engine has an angle detector for detecting the angle of rotation of a four-stroke cycle internal-combustion engine in synchronization with the rotation of the four-stroke cycle internal-combustion engine; an injector for injecting fuel which is provided for each cylinder of the four-stroke cycle internal-combustion engine; a plurality of ignition coils for generating high voltage for ignition for the respective cylinders; a fuel injection control unit for making the injectors inject fuel to the respective cylinders at the same time; and an ignition control unit for performing control by applying high voltage from the ignition coils so that the spark plugs may discharge at the same time to a cylinder group to be ignited. The fuel injection control unit performs the fuel injection after a predetermined time from the moment the control of the ignition coils was performed.

Abstract translation: 用于四冲程循环内燃机的控制器即使在启动时也不会引起发动机的操作故障，同时喷射器同时放置在喷射控制下，并且要点燃的气缸组被置于点火控制下 同时。 用于四冲程循环内燃机的控制器具有角度检测器，用于与四冲程循环内燃机的旋转同步地检测四冲程循环内燃机的旋转角度; 用于喷射燃料的喷射器，其被设置用于四冲程循环内燃机的每个气缸; 多个点火线圈，用于为各个气缸产生点火的高电压; 燃料喷射控制单元，用于使喷射器同时向各个气缸喷射燃料; 以及点火控制单元，用于通过施加来自点火线圈的高电压来执行控制，使得火花塞可以同时放电到要点燃的气缸组。 燃料喷射控制单元从执行点火线圈的控制之后的预定时间起执行燃料喷射。

公开(公告)号：US5546905A

公开(公告)日：1996-08-20

申请号：US149953

申请日：1993-11-10

Applicant: Wataru Fukui

Inventor： Wataru Fukui

IPC: F02D41/22 ,  F02D43/00 ,  F02P3/045 ,  F02P3/05 ,  F02P3/055 ,  F02P5/04 ,  F02P5/15 ,  F02P5/152 ,  F02P5/153 ,  F02P5/14

CPC classification number: F02P3/0456 ,  F02P5/045

Abstract: In a multi-cylinder internal combustion engine, an ignition control apparatus for suppressing generation of high-level noise and voltage leakage due to unwanted increases; in spark plug demand voltage. The apparatus includes (i) an angular position signal generator for generating a predetermined angular position signal for each of the cylinders in dependence on the rotation speed of the engine, (ii) sensors for detecting relevant operation states of the engine, (iii) fuel injectors for injecting fuel into the cylinders, (iv) an ignition system for firing a fuel mixture within each of the cylinders, and (v) a controller for generating a fuel injection signal for the fuel injectors and an ignition timing signal for the ignition system. These two signals generated by the controller are generated on the basis of the angular position signal and the engine operation state signal. In accordance with the invention, the controller controls the ignition timing so that, for any cylinder for which application of the fuel injection signal is suppressed, the ignition timing is shifted by a period corresponding to a predetermined crank angle from a top dead center position of the cylinder. Alternatively, the controller can be so designed that the duration of electrical conduction through the ignition coil is controlled by the controller to not exceed a predetermined value for the cylinder for which application of the fuel injection signal is suppressed.

Abstract translation: 在多缸内燃机中，由于不希望的增加而抑制高电平噪声和电压泄漏的产生的点火控制装置; 火花塞需要电压。 该装置包括（i）角位置信号发生器，用于根据发动机的转速产生每个气缸的预定角度位置信号，（ii）用于检测发动机的相关操作状态的传感器，（iii）燃料 用于将燃料喷射到气缸中的喷射器，（iv）用于在每个气缸内燃烧燃料混合物的点火系统，以及（v）用于产生用于燃料喷射器的燃料喷射信号的控制器和用于点火系统的点火定时信号 。 基于角位置信号和发动机运转状态信号生成由控制器产生的这两个信号。 根据本发明，控制器控制点火正时，使得对于燃料喷射信号的施加被抑制的任何气缸，点火正时从相对于预定的曲柄角度的期间偏移了从上止点 气瓶。 或者，控制器可以被设计成使得通过控制器控制通过点火线圈的导电持续时间不超过抑制燃料喷射信号的应用的气缸的预定值。

公开(公告)号：US5425339A

公开(公告)日：1995-06-20

申请号：US207716

申请日：1994-03-09

Applicant: Wataru Fukui

Inventor： Wataru Fukui

IPC: F02D45/00 ,  F02D35/02 ,  F02D41/14 ,  F02P5/145 ,  F02P17/12

CPC classification number: F02P17/12 ,  F02D35/021 ,  F02P5/1455 ,  F02P2017/125 ,  Y02T10/46

Abstract: An internal combustion engine control device improving the combustion state without increasing the cost. Such a control device comprises: an angle detection section for generating a reference position signal indicating a predetermined crank angle position of a cylinder of an internal combustion engine; a drive state detection section for detecting a drive state of the internal combustion engine; an ion current detection section for detecting an ion current in the cylinder so as to produce an ion current value; an ion current determining section for producing a peak value of the ion current value and a pulse width of the ion current value which is the same or greater than a predetermined level so as to output the peak value and the pulse width as first and second determined values, respectively; and a control parameter setting section for setting a control parameter of the internal combustion engine on the basis of the reference position signal and the drive state, the control parameter setting section varying the control parameter so that the product of the first and second determined values is maximized. Thus, the combustion state in the internal combustion engine is accurately determined, thereby enabling the feedback control of the control parameter.

Abstract translation: 一种改善燃烧状态而不增加成本的内燃机控制装置。 这种控制装置包括：角度检测部分，用于产生指示内燃机的气缸的预定曲柄角位置的基准位置信号; 驱动状态检测部，其检测内燃机的驱动状态; 用于检测气缸中的离子电流以产生离子电流值的离子电流检测部分; 离子电流确定部分，用于产生离子电流值的峰值和离子电流值的脉冲宽度等于或大于预定电平，以便输出峰值和脉冲宽度作为第一和第二确定 值; 以及控制参数设定部，其基于所述基准位置信号和所述驱动状态来设定所述内燃机的控制参数，所述控制参数设定部改变所述控制参数，使得所述第一和第二确定值的乘积为 最大化。 因此，能够准确地确定内燃机的燃烧状态，能够进行控制参数的反馈控制。