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公开(公告)号：EP1961941B1
公开(公告)日：2018-08-29
申请号：EP08002666.9
申请日：2008-02-13
发明人： Fukagai, Reina , Ieda, Norikazu , Tanaka, Masahiro , Inagaki, Hiroshi , Hirata, Masaki , Suzuki, Takahiro
CPC分类号： F02D41/1495 , F02D41/1456 , F02D41/1474 , F02D41/1494 , F02D2041/1432
摘要： A gas sensor diagnostic method includes the steps of counting the reversal number of times that a target air-fuel ratio for an air-fuel mixture to be supplied to an internal combustion engine reverses from a rich side to a lean side or from the lean side to the rich side through a specific air-fuel ratio defined as a boundary of the rich and lean sides; obtaining a detection signal of a gas sensor at constant time intervals during a diagnosis period between a timing when the count for the reversal number is started and a timing when the reversal number reaches a predetermined number; calculating a moderated signal by applying a moderation calculation using a predetermined moderation coefficient to the obtained detection signal; calculating a deviation between the obtained detection signal and the calculated moderated signal; and determining whether the gas sensor is in an abnormal state or not on the basis of the deviation.
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公开(公告)号：EP1961942A3
公开(公告)日：2013-12-04
申请号：EP08002866.5
申请日：2008-02-15
发明人： Fukagai, Reina , Ieda, Norikazu , Tanaka, Masahiro , Inagaki, Hiroshi , Takamatsu, Kunihiko , Hirata, Masaki , Suzuki, Takahiro
IPC分类号： F02D41/22 , F02D41/14 , G01N27/417 , F02D41/12
CPC分类号： F02D41/1456 , F02D41/123 , F02D41/126 , F02D41/1495 , F02D2250/14 , G01N27/4175
摘要： A gas sensor diagnostic method includes: a fuel supply detecting step of detecting an interruption of a fuel supply to the internal combustion engine, and a restart of the fuel supply after the interruption of the fuel supply; a response time period accumulating step of determining a response time period by accumulating a first time period that the sensor output value reaches from a first threshold value to a second threshold value after the detection of the interruption of the fuel supply, and a second time period that the sensor output value reaches from a third threshold value to a fourth threshold value after the detection of the restart of the fuel supply after the interruption of the fuel supply; and an abnormal state diagnosing section of determining an abnormal state of the gas sensor when the response time period is greater than a predetermined time period.
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公开(公告)号：EP1961940A2
公开(公告)日：2008-08-27
申请号：EP08002663.6
申请日：2008-02-13
发明人： Fukagai, Reina , Ieda, Norikazu , Tanaka, Masahiro , Inagaki, Hiroshi , Hirata, Masaki , Suzuki, Takahiro
IPC分类号： F02D41/14
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.
摘要翻译： 气体传感器诊断方法（或设备）被布置为周期性地获得用于内燃机的气体传感器（例如氧气传感器）的传感器输出值，并且根据在中断期间获得的传感器输出值来确定局部极值 燃料供应给发动机。 此外，将局部极值与第一预定阈值进行比较。 当局部极值的数量达到预定的第一数量时，根据局部极值与第一阈值水平的比较结果，执行诊断以确定气体传感器是否处于不适当的状态。
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公开(公告)号：EP0341807A3
公开(公告)日：1990-01-24
申请号：EP89301867.1
申请日：1989-02-24
发明人： Matsumura, Shuzo , Suzuki, Takahiro
IPC分类号： H01T13/04
CPC分类号： H01T13/04
摘要： A spark plug comprising:
a cylindrical metallic shell 3;
a tubular insulator 5 inserted into said metallic shell 3;
a centre electrode 6 positioned inside said insulator, said electrode 6 having its rear end projecting from the rear end of said insulator;
a sleeve terminal 7 located between the outer surface of the said electrode and the inner surface of said insulator 5, the terminal 7 being connected at its rear end to said centre electrode 6;
a connector 2 having an insulator sleeve 9 fitted inside a metallic sleeve 8; and
said connector 2 being securely capped to said metallic shell 3 at the time of assembly with the rear end of said tubular insulator 5 fitting inside said insulator sleeve 9, and with said metallic shell 3 fitting said metallic sleeve 8.-
6.发明公开Glow plug with built-in combustion pressure sensor and manufacturing method thereof 审中-公开传感器和Verfahren zu ihrer Herstellung
公开(公告)号：EP1460404A1
公开(公告)日：2004-09-22
申请号：EP04006269.7
申请日：2004-03-16
CPC分类号： F02P19/028 , F23Q7/001 , F23Q2007/002 , F23Q2007/004 , G01L23/10 , G01L23/222
摘要： A glow plug comprises a cylindrical housing having an inward protrusion extending radially inwardly, a threaded portion for screwing the glow plug in an engine plug hole and a sealing portion in a front side of the male threaded portion for airtightly engaging the housing with a given portion of the plug hole, a sheath having a rear sheath end portion airtightly fixed in the housing, a heater disposed in the sheath, a center electrode disposed in the housing and having a front electrode end portion electronically connected with the heater and mechanically connected with the sheath and an outward protrusion protruding radially outwardly, and a combustion pressure sensor having a pressure-sensitive element arranged between a front surface of the inward protrusion and a rear surface of the outward protrusion to generate an electrical signal in response to variations in stress applied thereto.
摘要翻译： 电热塞包括圆柱形壳体，其具有径向向内延伸的向内突出部，用于将电热塞拧到发动机塞孔中的螺纹部分和位于阳螺纹部分前侧的密封部分，用于将壳体与给定部分气密接合 所述护套具有气密地固定在所述壳体中的后护套端部，设置在所述护套中的加热器，设置在所述壳体中的中心电极，并且具有与所述加热器电连接并与所述加热器电连接的前电极端部 护套和径向向外突出的向外突出部，以及燃烧压力传感器，其具有布置在向内突出部的前表面和向外突出部的后表面之间的压敏元件，以响应于施加到其上的应力的变化而产生电信号 。
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公开(公告)号：EP0964490A3
公开(公告)日：2002-11-06
申请号：EP99304555.8
申请日：1999-06-11
CPC分类号： H01T13/467 , H01T13/32
摘要： In a spark plug, a main air gap (A) is formed between a parallel ground electrode (11) and the end face of a central electrode (2), a semi-surface gap (B) is formed between the end face (12C) of a semi-surface ground electrode (12) and the side face (2A) of the central electrode (2) and a semi-surface air gap (C) is formed between the end face (12C) and the side face (1E) of insulator. In addition, difference in a level E between the height of the lower end face (1D) of the insulator (1) and the height of the upper edge (12B) of the end face 12C of the semi-surface ground electrode 12 is E ≤ +0.7 mm, the distance B of the semi-surface gap (B) is longer than the distance A of the main air gap (A) and the distance C of the semi-surface air gap (C) is shorter than the distance A of the main air gap (A).
摘要翻译： 在火花塞中，在并联接地电极（11）和中心电极（2）的端面之间形成有主气隙（A），在端面（12C）之间形成有半面间隙 ）和半面空气（C）之间形成有半面接地电极（12）和中心电极（2）的侧面（2A）和半表面气隙（C）的端面（12C）和侧面 ）绝缘子。 此外，绝缘体（1）的下端面（1D）的高度与半表面接地电极12的端面12C的上边缘（12B）的高度之间的电平差E为E ≤+ 0.7mm，半表面间隙（B）的距离B比主气隙（A）的距离A长，半表面气隙（C）的距离C比距离 主气隙A（A）。
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8.发明公开Control system for an internal combustion engine and method carried out by the same 有权一种用于内燃发动机和方法的控制系统所进行的相同的
公开(公告)号：EP1138940A2
公开(公告)日：2001-10-04
申请号：EP01108035.5
申请日：2001-03-29
摘要： A control system (1) for an internal combustion engine is provided which comprises detecting means for detecting a discharge current (i2) flowing between electrodes (17a, 17b) of a spark plug (17) when a high voltage for ignition is applied to the spark plug, judging means for judging whether or not the spark plug (17) is fouled on the basis of the discharge current (i2), and inhibiting means for inhibiting the progress of spark plug fouling when the spark plug (17) is judged fouled. A method carried out by the control system (1) is also provided.
摘要翻译： 提供了一种控制系统（1），用于在内燃发动机，其包括：检测装置，用于检测放电电流（I 2）电极间流过（17A，17B）的火花塞（17），当点火高电压被施加到所述的 火花塞，判断装置，用于判断是否所述火花塞（17）的放电电流（I 2），和抑制手段的基础上，弄脏用于抑制火花塞的进展结垢当火花塞（17）判断污损 ， 因此，通过所述控制系统（1）进行的方法被提供。
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公开(公告)号：EP0964490A2
公开(公告)日：1999-12-15
申请号：EP99304555.8
申请日：1999-06-11
CPC分类号： H01T13/467 , H01T13/32
摘要： In a spark plug, a main air gap (A) is formed between a parallel ground electrode (11) and the end face of a central electrode (2), a semi-surface gap (B) is formed between the end face (12C) of a semi-surface ground electrode (12) and the side face (2A) of the central electrode (2) and a semi-surface air gap (C) is formed between the end face (12C) and the side face (1E) of insulator. In addition, difference in a level E between the height of the lower end face (1D) of the insulator (1) and the height of the upper edge (12B) of the end face 12C of the semi-surface ground electrode 12 is E ≤ +0.7 mm, the distance B of the semi-surface gap (B) is longer than the distance A of the main air gap (A) and the distance C of the semi-surface air gap (C) is shorter than the distance A of the main air gap (A).
摘要翻译： 在火花塞中，在平行的接地电极（11）和中心电极（2）的端面之间形成主空气间隙（A），在端面（12C）之间形成半表面间隙（B） ）和端面（12C）与侧面（1E）之间形成半表面接地电极（12）和中心电极（2）的侧面（2A）以及半表面空气间隙（C） ）绝缘子。 另外，绝缘体（1）的下端面（1D）的高度与半面接地电极12的端面12C的上缘（12B）的高度之间的高度E的差为E ≤+ 0.7mm，半表面间隙（B）的距离B比主气隙（A）的距离A更长，并且半表面间隙（C）的距离C比距离 A的主要气隙（A）。
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公开(公告)号：EP0803950A1
公开(公告)日：1997-10-29
申请号：EP97302772.5
申请日：1997-04-23
发明人： Kato, Tamoaki , Sakura, Akio , Suzuki, Takahiro
摘要： In a spark plug, a cylindrical metal shell is provided whose inner wall has a ledge portion on which an insulator rests through its seat portion. The insulator has an axial bore in which a center electrode is placed whose front end has a heat-resistant metal tip. A ground electrode is provided to form a spark gap with the metal tip of the center electrode. The insulator forms an insulator nose which measures less than 15 mm in length. The heat-resistant metal tip measures less than 0.8 mm in diameter. A space between an outer surface of the center electrode and an inner wall of a front open end of the axial bore is defined to be more than 0.1 mm in width.
摘要翻译： 在火花塞中，提供圆柱形金属外壳，其内壁具有凸缘部分，绝缘体通过其突出部分靠在其座部上。 绝缘体具有轴向孔，其中放置中心电极，其前端具有耐热金属尖端。 设置接地电极以与中心电极的金属尖端形成火花隙。 绝缘体形成长度小于15毫米的绝缘子鼻子。 耐热金属尖端的直径小于0.8mm。 中心电极的外表面和轴向孔的前开口端的内壁之间的间隔被限定为宽度大于0.1mm。
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