公开(公告)号：EP1890139A2

公开(公告)日：2008-02-20

申请号：EP07023840.7

申请日：1999-02-19

申请人： NGK Spark Plug Co., Ltd.

发明人： Inagaki, Hiroshi

IPC分类号： G01N27/407

CPC分类号： G01N27/419 ,  G01N27/4065

摘要： A control circuit unit 31 for use connected to an NOx sensor 1 is disclosed. A first pump element control circuit 56 controls a voltage applied to a first pump element 3 so as to control the level of a partial pressure of oxygen contained in a first processing chamber 9 such that an output voltage of an oxygen concentration detection element becomes substantially constant. A first pump current is detected through use of a current detection resistor 101 and is then output via an A/D converter circuit 65. A second pump element control circuit 57 applies a constant voltage to a second pump element 5 in such a direction as to pump out oxygen from a second processing chamber 10. A second pump current is detected through use of a current detection resistor 107 and is then output via an A/D converter circuit 65. A detection signal indicative of the first pump current is used for determination of the oxygen concentration of a measurement gas. The detection signal indicative of the first pump current and a detection signal indicative of the second pump current are used for determination of the nitrogen oxides concentration of the measurement gas.

摘要翻译： 公开了一种与NOx传感器1连接的控制电路单元31。 第一泵元件控制电路56控制施加到第一泵元件3的电压，以便控制第一处理室9中包含的氧分压的水平，使得氧浓度检测元件的输出电压变得基本恒定 。 通过使用电流检测电阻器101检测第一泵电流，然后经由A / D转换器电路65输出。第二泵元件控制电路57向第二泵元件5施加恒定电压，方向为 从第二处理室10抽出氧气。通过使用电流检测电阻器107检测第二泵电流，然后经由A / D转换器电路65输出。指示第一泵电流的检测信号用于确定 的测量气体的氧浓度。 表示第一泵电流的检测信号和表示第二泵电流的检测信号用于确定测量气体的氮氧化物浓度。

公开(公告)号：EP1677103A2

公开(公告)日：2006-07-05

申请号：EP05028591.5

申请日：2005-12-28

申请人： NGK SPARK PLUG CO., LTD

发明人： Inoue, Yoshinori ,  Inagaki, Hiroshi ,  Ieda, Norikazu

IPC分类号： G01N27/407

CPC分类号： G01N27/4175 ,  F02D41/1456 ,  F02D41/1494 ,  F02D41/1495 ,  F02D2041/1409

摘要： In an activation state of a sensor device (10), when voltage on the connection points between the sensor device (10) and the sensor control circuit (50) becomes a preset abnormal value, electric cut off is made between the sensor control circuit and the connection point. Then, the delivery of power to the heater (70) is ceased to lower the temperature of the cells to a below of an activation temperature, thereby increasing the internal resistance of the cell. Thereafter, the sensor control circuit (50) supplies to the sensor device a current in a degree not to damage the sensor device (10), to detect voltages on the connection points at that time. By comparing between the voltages on the respective connection points detected, a content and location of abnormality occurred is identified for the sensor device.

摘要翻译： 在传感器装置（10）的激活状态下，当传感器装置（10）和传感器控制电路（50）之间的连接点上的电压变为预设异常值时，在传感器控制电路和 连接点。 然后停止向加热器（70）的供电，将电池的温度降低到活化温度以下，从而提高电池内阻。 此后，传感器控制电路（50）以不损坏传感器装置（10）的程度向传感器装置供给电流，以检测此时的连接点的电压。 通过比较检测到的各个连接点上的电压，识别发生异常的内容和位置。

公开(公告)号：EP1217206A3

公开(公告)日：2005-03-23

申请号：EP01310807.1

申请日：2001-12-21

申请人： NGK SPARK PLUG CO., LTD

发明人： Inagaki, Hiroshi

IPC分类号： F02P3/05 ,  F02P9/00

CPC分类号： F02P9/007 ,  F02P3/051

摘要： In an ignition apparatus for internal combustion engine, since a current caused to flow by an induced voltage generated at both ends of a secondary winding L2 when starting conduction to a primary winding L1 is checked from the conduction by diode for prevention of a reverse current 31, a spark discharge is not generated between the electrodes 13a - 13b of the spark plug 13 when starting the conduction to a primary winding L1. After ending the spark discharge, the ionized current is generated between the electrodes of the spark plug by impressing the induced voltage (the ionized current generating voltage) created at both ends of the air-fuel mixture by a residual energy of the ignition coil 15.

公开(公告)号：EP1182347A2

公开(公告)日：2002-02-27

申请号：EP01306945.5

申请日：2001-08-15

申请人： NGK SPARK PLUG CO., LTD

发明人： Inagaki, Hiroshi ,  Fuma, Tomohiro ,  Washizu, Takashi

IPC分类号： F02P3/02

CPC分类号： F02P3/02

摘要： An ignition coil 100 includes a coil section 10―which in turn includes a coil case 15, a primary coil 12 and a secondary coil 14 accommodated within the coil case 15, and an insulating molded layer 16 filling the coil case 15―and a coil core C including a center core section 20 and a yoke section 30. The ignition coil 100 is mounted on an engine body EB such that the coil core C is insulated from the engine body EB, by means of a mounting section 70. The mounting section 70, together with an insulating filling section 60 filling at least partially a gap S formed between the coil section 10 and the coil core C, which face each other, is integrally formed of a polymeric material through integral injection molding. That is, the ignition coil 100 is mounted on the engine body EB by means of the mounting section 70, which, together with the insulating filling section 60 filling the gap S formed between the coil section 10 and the coil core C, which face each other, is integrally formed of a polymeric material through integral injection molding.
Consequently there is disclosed an ignition coil of excellent durability and reliability that is capable of suppressing occurrence of leakage between a secondary coil and a coil core and suppressing generation of corona discharge across a gap between a coil section and the coil core to thereby suppress erosion of, for example, a coil case, which accommodates the primary and secondary coils, even when the maximum-voltage generation capability of the secondary coil is enhanced as a result of, for example, increase in discharge voltage of a spark plug, and the ignition coil is operated continuously for a long period of time, as well as to provide an ignition unit using the ignition coil.

摘要翻译： 点火线圈100包括线圈部分10，该线圈部分10又包括容纳在线圈壳体15内的线圈壳体15，初级线圈12和次级线圈14以及填充线圈壳体15的绝缘模制层16和线圈 包括中心芯部分20和磁轭部分30的磁芯C.点火线圈100安装在发动机主体EB上，使得线圈芯C通过安装部分70与发动机主体EB绝缘。安装部分 70与绝缘填充部分60一起填充至少部分地形成在彼此面对的线圈部分10和线圈芯C之间的间隙S，通过一体注射成型由聚合物材料整体形成。 也就是说，点火线圈100通过安装部分70安装在发动机主体EB上，安装部分70与绝缘填充部分60一起填充形成在线圈部分10和线圈芯体C之间的间隙S， 另一个，通过整体注射成型由聚合物材料整体形成。 因此，公开了具有优异的耐久性和可靠性的点火线圈，其能够抑制次级线圈和线圈芯之间的泄漏的发生，并且抑制线圈部分和线圈芯之间的间隙的电晕放电的产生， 从而抑制例如容纳初级线圈和次级线圈的线圈壳体的侵蚀，即使当由于例如火花塞的放电电压的增加而使次级线圈的最大电压产生能力增强时 并且点火线圈长时间连续运转，并且提供使用点火线圈的点火单元。

公开(公告)号：EP0869356A3

公开(公告)日：2000-10-25

申请号：EP98105804.3

申请日：1998-03-30

申请人： NGK Spark Plug Co. Ltd.

发明人： Miyata, Shigeru ,  Ando, Masashi ,  Inagaki, Hiroshi ,  Ishida, Noboru ,  Oshima, Takafumi

IPC分类号： G01N27/407

CPC分类号： G01N27/417 ,  G01N27/4074

摘要： An NO x sensor capable of accurately determining the concentration of NO x contained in a gas to be analyzed (measurement gas) using a simple circuit. The NO x sensor includes a first measurement space (20) and a second measurement space (26). The first measurement space (20) communicates with the measurement gas via a first diffusion controlling layer (4d), and the second measurement space (26) communicates with the first measurement space via a second diffusion controlling layer (6d). A first pumping current I p1 is controlled such that an output from a Vs cell is used as a reference voltage V co to control the amount of oxygen flowing into the second measurement space (26) at a constant level. A constant voltage is applied to the second pumping cell (8) so as to decompose the NO x component of the measurement gas contained in the second measurement space (26), and to pump out the resulting oxygen from the second measurement space (26). Accordingly, the concentration of NO x contained in the measurement gas can be obtained from second pumping current I p2 . The electrode of the Vs cell located on the side of the first measurement space (20) is formed around the periphery of or on a portion of the diffusion controlling layer (6d) of the Vs cell. As a result, the amount of oxygen flowing from the first measurement space (20) into the second measurement space (26) can be accurately determined by means of the Vs cell. Also, the NO x concentration can be accurately determined without the need for compensation.

公开(公告)号：EP0816656A3

公开(公告)日：1999-11-10

申请号：EP97109913.0

申请日：1997-06-18

申请人： NGK Spark Plug Co. Ltd.

发明人： Kondo, Noriaki ,  Inagaki, Hiroshi ,  Miyata, Shigeru

IPC分类号： F02D41/14

CPC分类号： F02D41/1474 ,  F01N3/22 ,  F02D35/003

摘要： An air/fuel ratio detection device and an air/fuel ratio control device, in which combustion of an engine is controlled with a simple means and toxic substances in exhaust gas discharged from the engine are reduced. Time A during which a lean signal is at a high level is measured. If the time A is shorter than the predetermined value, it is determined that the air/fuel ratio is richer than a target value, and time B during which an electromagnetic valve 21 is open is lengthened, increasing the quantity of supply air and making leaner the fuel mixed air, such that the target air/fuel ratio is approached. If the time A is longer than the predetermined value, it is determined that the air/fuel ratio is leaner and the time B is shortened.

摘要翻译： 一种空气/燃料比检测装置和空燃比控制装置，其中以简单的方式控制发动机的燃烧，并且减少从发动机排出的废气中的有毒物质。 测量稀疏信号处于高电平的时间A. 如果时间A短于预定值，则确定空燃比比目标值更浓，并且电磁阀21打开的时间B被延长，从而增加供气量并使其变稀 燃料混合空气，使得目标空气/燃料比接近。 如果时间A长于预定值，则确定空燃比较稀，时间B缩短。

公开(公告)号：EP0866222A2

公开(公告)日：1998-09-23

申请号：EP98104816.8

申请日：1998-03-17

申请人： NGK SPARK PLUG CO., LTD.

发明人： Inagaki, Hiroshi

IPC分类号： F02P5/15

CPC分类号： F02P7/067 ,  F02P5/1502 ,  Y02T10/46

摘要： An ignition timing control system for an industrial engine or small engines used on lawn mowers, etc. is provided. In such an industrial engine, a pulser coil outputs an alternating current signal in response to movement of a magnet which rotates together with an output shaft of the industrial engine. To the pulser coil, there are connected a detecting circuit for generating a timing signal corresponding to an angle of rotation of the output shaft in response to the signal from the pulser coil, a microcomputer for determining an engine speed in accordance with the timing signal and then determining an ignition timing in accordance with the determined engine speed, and a signal generating circuit for generating a signal for controlling the timing at which a spark plug is driven by an ignition drive unit. By advancing and retarding the ignition timing, the output of the engine can be controlled with responsiveness such that the stable operation of the engine can be obtained even when the air/fuel mixture is made leaner to such an extent that will inevitably cause hunting when the engine is operated under only a throttle valve opening and closing control by a governor.

摘要翻译： 提供了一种用于割草机等的工业发动机或小型发动机的点火正时控制系统。 在这样的工业发动机中，脉冲发生器线圈响应于与工业发动机的输出轴一起旋转的磁体的运动而输出交流信号。 对于脉冲发生器线圈，连接有用于根据来自脉冲发生器线圈的信号产生对应于输出轴的旋转角度的定时信号的检测电路，用于根据定时信号确定发动机转速的微型计算机， 然后根据所确定的发动机转速来确定点火正时;以及信号产生电路，用于产生用于控制由点火驱动单元驱动火花塞的定时的信号。 通过推进和延迟点火正时，可以通过响应性来控制发动机的输出，使得即使当空气/燃料混合物变得更稀的时候也可以获得发动机的稳定运行，从而当不可避免地会引起狩猎的程度时 发动机仅由调速器在节气门开闭控制下操作。

公开(公告)号：EP0816656A2

公开(公告)日：1998-01-07

申请号：EP97109913.0

申请日：1997-06-18

申请人： NGK Spark Plug Co. Ltd.

发明人： Kondo, Noriaki ,  Inagaki, Hiroshi ,  Miyata, Shigeru

IPC分类号： F02D41/14

CPC分类号： F02D41/1474 ,  F01N3/22 ,  F02D35/003

摘要： An air/fuel ratio detection device and an air/fuel ratio control device, in which combustion of an engine is controlled with a simple means and toxic substances in exhaust gas discharged from the engine are reduced. Time A during which a lean signal is at a high level is measured. If the time A is shorter than the predetermined value, it is determined that the air/fuel ratio is richer than a target value, and time B during which an electromagnetic valve 21 is open is lengthened, increasing the quantity of supply air and making leaner the fuel mixed air, such that the target air/fuel ratio is approached. If the time A is longer than the predetermined value, it is determined that the air/fuel ratio is leaner and the time B is shortened.

公开(公告)号：EP1961940B1

公开(公告)日：2019-04-03

申请号：EP08002663.6

申请日：2008-02-13

申请人： NGK Spark Plug Co., Ltd. ,  SUZUKI MOTOR CORPORATION

发明人： Fukagai, Reina ,  Ieda, Norikazu ,  Tanaka, Masahiro ,  Inagaki, Hiroshi ,  Hirata, Masaki ,  Suzuki, Takahiro

IPC分类号： F02D41/14 ,  F02D41/12 ,  G01N27/417

公开(公告)号：EP1961940A3

公开(公告)日：2017-07-19

申请号：EP08002663.6

申请日：2008-02-13

申请人： NGK Spark Plug Co., Ltd. ,  SUZUKI MOTOR CORPORATION

发明人： Fukagai, Reina ,  Ieda, Norikazu ,  Tanaka, Masahiro ,  Inagaki, Hiroshi ,  Hirata, Masaki ,  Suzuki, Takahiro

IPC分类号： F02D41/14 ,  F02D41/12 ,  G01N27/417

CPC分类号： F02D41/1454 ,  F02D41/123 ,  F02D41/1495 ,  G01N27/4175

摘要： A gas sensor diagnostic method (or apparatus) is arranged to periodically obtain sensor output values of a gas sensor such as an oxygen sensor for an internal combustion engine, and to determine local extreme values from the sensor output values obtained during a period of interruption of fuel supply to the engine. Moreover, the local extreme values are compared with a first predetermined threshold level. When the number of the local extreme values reaches a predetermined first number, a diagnosis is performed to determine whether the gas sensor is in an improper condition or not, in accordance with results of the comparison of the local extreme values with the first threshold level.