公开(公告)号：EP3076009A2

公开(公告)日：2016-10-05

申请号：EP16157433.0

申请日：2016-02-25

Applicant: Fuji Electric Co., Ltd.

Inventor： MIYAZAWA, Shigemi

IPC: F02P9/00 ,  F02P11/00 ,  F02P3/055 ,  H02M1/08 ,  H03K17/16

CPC classification number: F02P3/0552 ,  F02D41/221 ,  F02P3/0435 ,  F02P3/05 ,  F02P9/005 ,  F02P11/00 ,  F02P11/02 ,  F02P11/06 ,  H02M1/08 ,  H03K5/24 ,  H03K17/166 ,  H03K17/567

Abstract: When a normal operation is detected by a self-interruption signal source and a first transistor is on, if an on-signal is inputted to an IN terminal, a second transistor is turned on and a third transistor is turned off. Accordingly, an IGBT is turned on. In this state, if an abnormality is detected by the self-interruption signal source, the second transistor is turned off and the third transistor is turned on. Accordingly, a gate terminal of the IGBT is connected to an emitter terminal via the first and third transistors, and charges accumulated by gate capacitance of the IGBT are rapidly discharged. Consequently, if a comparator detects that a collector voltage of the IGBT has exceeded a predetermined voltage, the first transistor is turned off, and gradual interruption in which the charges accumulated by the gate capacitance are gradually released by a resistor is performed.

Abstract translation: 当通过自我中断信号源检测到正常操作并且第一晶体管导通时，如果导通信号被输入到IN端子，则第二晶体管导通并且第三晶体管截止。 相应地，IGBT导通。 在这种状态下，如果自我中断信号源检测到异常，则第二晶体管截止并且第三晶体管导通。 因此，IGBT的栅极端子经由第一晶体管和第三晶体管连接到发射极端子，并且由IGBT的栅极电容累积的电荷被快速放电。 因此，如果比较器检测到IGBT的集电极电压已经超过预定电压，则第一晶体管截止，并且由栅极电容累积的电荷通过电阻器逐渐释放的逐渐中断被执行。

公开(公告)号：EP3076007A1

公开(公告)日：2016-10-05

申请号：EP14866054.1

申请日：2014-11-28

Applicant: DENSO CORPORATION

Inventor： NAKAYAMA, Satoru ,  TORIYAMA, Makoto ,  SUGIURA, Akimitsu ,  ISHITANI, Masahiro ,  MIZUTANI, Atsuya ,  ANDOH, Kouji ,  HAYASHI, Naoto ,  DOI, Kaori

IPC: F02P3/00 ,  F02P9/00

CPC classification number: F02P15/10 ,  F02P3/0407 ,  F02P3/0442 ,  F02P3/05 ,  F02P3/051 ,  F02P3/0892 ,  F02P5/145 ,  F02P5/15 ,  F02P9/002 ,  F02P9/007 ,  F02P17/12 ,  Y02T10/46

Abstract: An ignition device (7) at least equipped with a DC power source (1), an ignition coil unit (2), a spark plug (3), an ignition switch (4), and an auxiliary power source (5), wherein the auxiliary power source (5) is at least equipped with a discharge energy accumulating means (54), a discharge switch (56), and a discharge driver (57). The ignition device (7) is further equipped with a secondary-current feedback controlling means (6) comprising a secondary current detecting means (60) for detecting a secondary current (I 2 ) flowing during the ignition coil unit (2) discharge period, and a secondary current feedback control circuit (61) for determining an upper limit and a lower limit for the secondary current (I 2 ) from binary threshold values, and driving so as to open and close the discharge switch (56) on the basis of the determination results. Furthermore, energy is introduced from the auxiliary power source (5) without switching the polarity of the secondary current.

Abstract translation: 一种点火装置（7），其至少配备有直流电源（1），点火线圈单元（2），火花塞（3），点火开关（4）和辅助电源（5），其中 辅助动力源（5）至少配备有排放能量积累装置（54），排放开关（56）和排放驱动器（57）。 点火装置（7）还配备有包括次级电流检测装置（60）的次级电流反馈控制装置（6），用于检测在点火线圈单元（2）放电周期期间流动的次级电流（I2），以及 次级电流反馈控制电路（61），用于根据二进制阈值确定次级电流（I2）的上限和下限，以及基于该确定进行驱动以打开和关闭放电开关（56） 结果。 此外，从辅助电源（5）引入能量而不切换次级电流的极性。

公开(公告)号：EP2960475A1

公开(公告)日：2015-12-30

申请号：EP15174010.7

申请日：2015-06-26

Applicant: Toyota Jidosha Kabushiki Kaisha

Inventor： YASUDA, Hiromichi

IPC: F02D41/22 ,  F02D35/02 ,  G01M15/08 ,  G01M3/00 ,  F02B77/08 ,  F16J15/00 ,  F02D41/00 ,  F02P5/153

CPC classification number: F02D41/22 ,  F02B77/085 ,  F02B77/088 ,  F02D35/023 ,  F02D35/028 ,  F02D41/0002 ,  F02D41/009 ,  F02D41/3005 ,  F02D2041/228 ,  F02D2200/101 ,  F02P3/05 ,  F02P5/045 ,  F02P5/151 ,  F02P5/153 ,  G01M15/08 ,  Y02T10/46

Abstract: An internal combustion engine system includes: an in-cylinder pressure sensor 30; a crank angle sensor 42; and a seal portion 34 that seals a space between an outer face of a housing 301 and a wall surface of a cylinder head 32. A slope k that is a ratio of the amount of decrease in a heat release amount Q relative to the amount of increase in a crank angle is calculated in a period during an expansion stroke from a combustion end point θ max until an opening timing of an exhaust valve 22. The existence or nonexistence of an abnormality in the sealing function of the seal portion 34 is determined based on whether or not a ratio X of the amount of decrease in the slope k to the amount of increase in an engine speed is greater than a threshold value α.

Abstract translation: 内燃机系统包括：缸内压力传感器30; 曲柄角传感器42; 以及密封部34，其密封壳体301的外表面和气缸盖32的壁面之间的空间。作为散热量Q的减少量相对于气缸盖32的量的比率的斜率k 在从燃烧终点¸max到排气门22的打开正时的膨胀冲程期间计算曲轴角度的增加。密封部34的密封功能的异常的存在或不存在是基于 关于斜率k的减小量与发动机转速的增加量的比率X是否大于阈值±。

公开(公告)号：US20180372058A1

公开(公告)日：2018-12-27

申请号：US15955198

申请日：2018-04-17

Applicant: Mitsubishi Electric Corporation

Inventor： Hideki HAGARI

IPC: F02P17/12 ,  F02P3/04 ,  F02D41/00 ,  F02P9/00

CPC classification number: F02P17/12 ,  F02D13/0203 ,  F02D35/02 ,  F02D41/0002 ,  F02D2041/001 ,  F02D2041/0015 ,  F02D2041/002 ,  F02D2041/1433 ,  F02P3/0442 ,  F02P3/05 ,  F02P5/1502 ,  F02P9/002

Abstract: To provide a controller and control method for an internal combustion engine capable of estimating a discharge plasma length and the in-cylinder flow speed accurately by easy method. A controller and a control method for an internal combustion engine detects a secondary voltage which is a voltage generated by the secondary coil, calculates a minimum value of secondary voltage during a discharge period, calculates a discharge plasma length based on the secondary voltage and the minimum value of secondary voltage, and calculates an in-cylinder flow speed based on a time change of the discharge plasma length and a Coulomb force.

公开(公告)号：US20180306162A1

公开(公告)日：2018-10-25

申请号：US15784323

申请日：2017-10-16

Applicant: Mitsubishi Electric Corporation

Inventor： Takeshi KODA ,  Ryo SAKAGUCHI

IPC: F02P3/05 ,  F02P5/10 ,  F02P5/15 ,  F02P3/04

CPC classification number: F02P3/05 ,  F02P3/01 ,  F02P3/0407 ,  F02P5/103 ,  F02P5/1516 ,  F02P9/002 ,  F02P9/007 ,  F02P15/10 ,  F02P2017/125

Abstract: There is provided an internal combustion engine ignition apparatus that can effectively raise the ignitability of an inflammable fuel-air mixture, by applying electric power corresponding to the combustion state of an internal combustion engine. A combustion state detection apparatus detects an combustion state inside a combustion chamber of the internal combustion engine; based on the combustion state detected by the combustion state detection apparatus in accordance with an operation state of an ignition coil apparatus, a current supply apparatus supplies an AC current to a spark discharge path formed in the gap of an ignition plug; then, a control apparatus controls the output of the current supply apparatus.

公开(公告)号：US10037846B2

公开(公告)日：2018-07-31

申请号：US15210205

申请日：2016-07-14

Applicant: DENSO CORPORATION

Inventor： Katsunori Akimoto

IPC: H01F38/12 ,  F02P3/05 ,  H01F27/02 ,  H01F27/40

CPC classification number: H01F38/12 ,  F02P3/02 ,  F02P3/05 ,  H01F27/022 ,  H01F27/40 ,  H01T13/04

Abstract: An ignition coil for an internal combustion engine includes an annular elastic seal which is tightly attached to a high-voltage tower and a plug installed in the high-voltage tower to be conductible with a spark plug. The elastic seal hermetically seals a gap between the high-voltage tower and the plug and also functions as a buffer to absorb stress, as exerted from the plug on a case of the ignition coil. This enables the case to be reduced in size as a whole without having to partially increase the wall thickness of the case to ensure a required degree of stiffness of the case and also results in improved degree of hermetic sealing between the plug and the high-voltage tower.

公开(公告)号：US20170018352A1

公开(公告)日：2017-01-19

申请号：US15210205

申请日：2016-07-14

Applicant: DENSO CORPORATION

Inventor： Katsunori AKIMOTO

IPC: H01F38/12 ,  F02P3/05

CPC classification number: H01F38/12 ,  F02P3/05 ,  H01F27/022 ,  H01F27/40

Abstract: An ignition coil for an, internal combustion engine includes an annular elastic seal which is tightly attached to a high-voltage tower and a plug installed in the high-voltage tower to be conductible with a spark plug. The elastic seal hermetically seals a gap between the high-voltage tower and the plug and also functions as a buffer to absorb stress, as exerted from the plug on a case of the ignition coil. This enables the case to be reduced in size as a whole without having to partially increase the wall thickness of the case to ensure a required degree of stiffness of the case and also results in improved degree of hermetic sealing between the plug and the high-voltage tower.

Abstract translation: 用于内燃机的点火线圈包括紧密地附接到高压塔的环形弹性密封件和安装在高压塔中以与火花塞导通的插头。 弹性密封件气密地密封高压塔和插头之间的间隙，并且还起到缓冲器的作用，以吸收由插头对点火线圈的外壳施加的应力。 这使得壳体可以整体尺寸减小，而不必局部地增加壳体的壁厚，以确保壳体所需的刚度，并且还导致插头和高压之间的气密密封的改善程度 塔。

公开(公告)号：US20160327008A1

公开(公告)日：2016-11-10

申请号：US15109203

申请日：2014-03-27

Applicant: UNITED AUTOMOTIVE ELECTRONIC SYSTEMS CO. LTD

Inventor： Yichun MAO ,  Xiaoqing SUN ,  Yuqiang LI ,  Jie CHENG

IPC: F02P3/08 ,  H01T15/00 ,  H01F38/12

CPC classification number: F02P3/0807 ,  F02P3/0407 ,  F02P3/05 ,  F02P3/0876 ,  F02P9/002 ,  F02P9/007 ,  F02P15/10 ,  H01F38/12 ,  H01T15/00

Abstract: A high-energy ignition coil, wherein a primary coil and a secondary coil are both wound around an iron core, these three constituting a transformer. The primary coil loop is provided with a switch controlled by an ECU. The spark plug is connected at one electrode to an end of the secondary coil, and is grounded at the other electrode. An on-board power supply supplies power to the primary coil via a DC booster, which boosts the DC voltage outputted by the on-board power supply before outputting. The other end of the secondary coil is either connected to the DC booster or grounded via a reversely connected diode. A current keeping device is connected in parallel with a serial branch of the secondary coil and the spark plug, working after the spark plug is turned on to keep the spark plug on.

Abstract translation: 一个高能点火线圈，其中初级线圈和次级线圈都缠绕在铁芯上，这三个组成一个变压器。 初级线圈环设有由ECU控制的开关。 火花塞在一个电极连接到次级线圈的一端，并在另一个电极处接地。 机载电源通过直流增压器为初级线圈供电，在输出之前提升板载电源输出的直流电压。 次级线圈的另一端连接到直流增压器或通过反向连接的二极管接地。 电流保持装置与次级线圈和火花塞的串联分支并联连接，在火花塞接通之后工作，以保持火花塞接通。

公开(公告)号：US20160265501A1

公开(公告)日：2016-09-15

申请号：US15063467

申请日：2016-03-07

Applicant: FUJI ELECTRIC CO., LTD.

Inventor： Shigemi MIYAZAWA

IPC: F02P3/055 ,  H03K5/24 ,  H03K17/567

CPC classification number: F02P3/0552 ,  F02D41/221 ,  F02P3/0435 ,  F02P3/05 ,  F02P9/005 ,  F02P11/00 ,  F02P11/02 ,  F02P11/06 ,  H02M1/08 ,  H03K5/24 ,  H03K17/166 ,  H03K17/567

Abstract: When normal operation is detected by a self-interruption signal source and a first transistor is on, if an on-signal is inputted to an IN terminal, a second transistor is turned on and a third transistor is turned off. Accordingly, an IGBT is turned on. In this state, if an abnormality is detected by the self-interruption signal source, the second transistor is turned off and the third transistor is turned on. Accordingly, a gate terminal of the IGBT is connected to an emitter terminal via the first and third transistors, and charges accumulated by gate capacitance of the IGBT are rapidly discharged. Consequently, if a comparator detects that a collector voltage of the IGBT has exceeded a predetermined voltage, the first transistor is turned off, and a gradual interruption, in which the charges accumulated by the gate capacitance are gradually released by a resistor, is performed.

Abstract translation: 当通过自中断信号源检测到正常操作并且第一晶体管导通时，如果将ON信号输入到IN端子，则第二晶体管导通，并且第三晶体管截止。 因此，IGBT被导通。 在该状态下，如果由自中断信号源检测到异常，则第二晶体管截止，第三晶体管导通。 因此，IGBT的栅极端子经由第一和第三晶体管连接到发射极端子，并且由IGBT的栅极电容累积的电荷被快速放电。 因此，如果比较器检测到IGBT的集电极电压已经超过预定电压，则第一晶体管被截止，并且由栅极电容累积的电荷逐渐被电阻器释放的逐渐中断被执行。

公开(公告)号：US20160047352A1

公开(公告)日：2016-02-18

申请号：US14783898

申请日：2014-04-11

Applicant: DENSO CORPORATION

Inventor： Satoru NAKAYAMA ,  Makoto TORIYAMA ,  Akimitsu SUGIURA ,  Masahiro ISHITANI ,  Yuuki KONDOU ,  Kanechiyo TERADA

IPC: F02P9/00 ,  F02P5/15

CPC classification number: F02P9/002 ,  F02P3/005 ,  F02P3/0407 ,  F02P3/0453 ,  F02P3/05 ,  F02P3/0876 ,  F02P3/09 ,  F02P5/1502 ,  F02P15/10 ,  Y02T10/46

Abstract: It is possible to adjust electromagnetic energy introduced from a low-voltage side of a primary winding 20 of an ignition coil 2 after start discharging to a spark plug 1 from the ignition coil 2 in the correct proportion by threshold-determining either one or both of a primary voltage V1 applied to a primary side of the ignition coil 2 and a secondary current I2 flowing in a secondary side of the ignition coil 2, and by opening and closing a discharging switch 32 disposed between an auxiliary power supply 3 including an energy storage coil 330 and a low-voltage side terminal 201 of the ignition coil 2.

Abstract translation: 可以通过阈值确定任一个或两个来调节从点火线圈2开始放电到火花塞1之后从点火线圈2的初级绕组20的低压侧引入的电磁能量 施加到点火线圈2的初级侧的初级电压V1和在点火线圈2的二次侧流动的次级电流I2，并且通过打开和关闭设置在包括能量存储器的辅助电源3之间的放电开关32 线圈330和点火线圈2的低压侧端子201。