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公开(公告)号：US20160202167A1
公开(公告)日：2016-07-14
申请号：US14911363
申请日：2014-06-27
Applicant: NGK SPARK PLUG CO., LTD.
Inventor： Masayuki MOTOMURA , Takeshi SUGIYAMA , Kazunari KOKUBO
CPC classification number: G01N15/0656 , F01N9/002 , F01N11/00 , G01N2015/0046
Abstract: A particulate detection system (1) for detecting the quantity of particulates S in a gas under measurement EG includes first heater energization means S2 to S3, current convergence determination means S4 to S5, S7 to S8, second heater energization means S6, and detection start means S10. S2 to S3 performs low-temperature energization of heater (78) for a predetermined period after operation of ion source (11) is started by ion source drive circuit (210) such that gaseous discharge current Id becomes equal to a predetermined target current It. S4 to S5, S7 to S8 determines, after elapse of the predetermined period, whether or not Id has converged to an allowable range IR. When S4 to S5 determines that Id has not yet converged, S6 performs high-temperature energization of the heater (78) until Id converges. Then, S10 starts detection of particulates S using signal Is detected by a detection circuit (230).
Abstract translation: 用于检测被测气体中的微粒S量的微粒检测系统（1）包括第一加热器通电装置S2至S3，电流收敛确定装置S4至S5，S7至S8，第二加热器通电装置S6和检测开始 意味着S10。 在离子源（11）由离子源驱动电路（210）启动使得气体放电电流Id变为等于预定目标电流It之后，S2至S3进行加热器（78）的低温通电预定时间。 从S4到S5，S7至S8确定在经过预定时段之后，Id是否已经收敛到容许范围IR。 当S4至S5确定Id尚未收敛时，S6执行加热器（78）的高温通电，直到Id收敛。 然后，S10使用由检测电路（230）检测出的信号Is开始检测微粒S.
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公开(公告)号：US20170343511A1
公开(公告)日：2017-11-30
申请号：US15598715
申请日：2017-05-18
Applicant: NGK Spark Plug Co., LTD.
Inventor： Hirokazu MURASE , Takeshi SUGIYAMA , Toshiya MATSUOKA
Abstract: A particulate sensor can reduce the amount of floating ions discharged from the interior of a gas introduction pipe to the outside through a gas discharge opening, without providing an auxiliary electrode member which applies to the floating ions a repulsive force toward the gas introduction pipe to thereby assist the collection of the floating ions by the gas introduction pipe. The particulate sensor has an collection member which is connected to a gas introduction pipe to thereby be maintained at a collection potential and is disposed in the interior of the gas introduction pipe to be located between a forward end of the discharge electrode member and a gas discharge opening such that the forward end of the discharge electrode member cannot be visually recognized from the outside of the gas introduction pipe through the gas discharge opening.
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公开(公告)号：US20170307498A1
公开(公告)日：2017-10-26
申请号：US15517420
申请日：2015-10-13
Applicant: NGK SPARK PLUG CO., LTD.
Inventor： Takeshi SUGIYAMA , Masayuki MOTOMURA , Norimasa OSAWA , Hirokazu MURASE
CPC classification number: G01N15/06 , F01N11/00 , F01N2560/05 , F01N2560/20 , G01M15/102 , G01N15/0656 , G01N27/60 , G01N2015/0046 , Y02T10/47
Abstract: A particle detection system (1) includes a particle sensor (10) having a detection section (11) exposed to a gas under measurement EG. The particle sensor (10) includes an insulating member (121, 100), and a heater section (150, 105) for heating at least a portion of the gas contact surface (121s, 101s) of the insulating member (121, 100). The particle detection system (1) includes adhesive restraining energization means (225, 223, S4, S10) for heating the gas contact surface (121s, 101s) to an adhesion restraining temperature Td at which adhesion of the particles S to the gas contact surface (121s, 101s) is restrained as compared with the case where the heater section is not energized, wherein adhering particles SA which are particles adhering to the gas contact surface (121s, 101s) burn at the particle burning temperature Tb.
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公开(公告)号：US20160103054A1
公开(公告)日：2016-04-14
申请号：US14872447
申请日：2015-10-01
Applicant: NGK SPARK PLUG CO., LTD.
Inventor： Toshiya MATSUOKA , Takeshi SUGIYAMA
CPC classification number: G01N15/0656 , G01M15/102 , G01N15/0606 , G01N2015/0046
Abstract: A particulate measurement system includes an ion generation section for generating ions by means of corona discharge; an electrification chamber for electrifying particulates contained in a gas under measurement; a measurement signal generation circuit for generating a measurement signal which correlates with the amount of the particulates; and a particulate amount determination section for determining the amount of the particulates. The particulate measurement system further includes a particle diameter estimation section for estimating the particle diameter of the particulates contained in the gas under measurement. The particulate amount determination section performs correction by multiplying the measurement signal or the amount of the particulates determined from the measurement signal by a coefficient relating to the ratio between the estimated particle diameter and a reference particle diameter.
Abstract translation: 微粒测量系统包括用于通过电晕放电产生离子的离子产生部分; 用于对包含在测量气体中的微粒进行带电的带电室; 用于产生与微粒量相关的测量信号的测量信号产生电路; 以及用于确定微粒量的颗粒量确定部分。 颗粒测量系统还包括用于估计包含在测量气体中的微粒的粒径的粒径估计部分。 颗粒量确定部通过将测量信号或由测量信号确定的微粒的量乘以与估计的粒径和参考粒径之比的系数来进行校正。
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公开(公告)号：US20150120229A1
公开(公告)日：2015-04-30
申请号：US14515608
申请日：2014-10-16
Applicant: NGK SPARK PLUG CO., LTD.
Inventor： Takeshi SUGIYAMA , Masayuki MOTOMURA , Toshiya MATSUOKA , Keisuke TASHIMA
CPC classification number: G01N15/0656 , G01L3/00 , G01M15/102 , G01N15/0606 , G01N2015/0046 , G01P3/00 , H01J49/02 , H01T23/00
Abstract: A particulate amount determination section of a particulate measurement system corrects a measurement signal or the amount of particulates determined from the measurement signal based on one or a plurality of three operating condition parameters selected from speed of the vehicle, rotational speed of the internal combustion engine and torque of the internal combustion engine.
Abstract translation: 微粒测量系统的微粒量确定部分根据从车辆速度，内燃机的转速和内燃机的转速中选出的一个或多个三个运行状态参数来校正测量信号或从测量信号确定的微粒量， 内燃机转矩。
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Patent Agency Ranking
公开(公告)号：US20180143107A1
公开(公告)日：2018-05-24
申请号：US15814796
申请日：2017-11-16
Applicant: NGK SPARK PLUG CO., LTD.
Inventor： Hirokazu MURASE , Takeshi SUGIYAMA
CPC classification number: G01N1/2252 , F01N3/021 , F01N11/00 , F01N13/008 , F01N2560/05 , F01N2900/1411 , G01M15/048 , G01M15/102 , G01N15/0656 , G01N2015/0046 , Y02T10/20 , Y02T10/47
Abstract: A particulate detection system (10, 1010) includes a sensor section (100) and a sensor drive section (300). A flow EIF of a measurement target gas EI passes through the sensor section, and an amount M of particulates S is detected. The sensor section (100) includes an ion applying section (100e) which generates ions CP, discharges ion-adhering electrified particulates SC, and collects unadhered ions CPF. The sensor drive section includes a sensor current value obtainment section (530) for obtaining a sensor current value Ss corresponding to the amount QH of flowed out charge, a flow velocity obtainment section (510) for obtaining, the flow velocity Vg of the external gas flow, and a particulate amount obtainment section (550, 1550) for obtaining the amount M of particulates S. The influence of flow velocity Vg is mitigated using the sensor current value Ss and the flow velocity Vg.
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公开(公告)号：US20170045435A1
公开(公告)日：2017-02-16
申请号：US15305320
申请日：2015-08-21
Applicant: NGK Spark Plug Co., LTD.
Inventor： Takeshi SUGIYAMA , Masayuki MOTOMURA , Norimasa OSAWA , Keisuke TASHIMA , Toshiya MATSUOKA
CPC classification number: G01N15/0656 , G01N33/0027 , G01N2015/0046
Abstract: A particulate sensor includes: an inner metallic member which is maintained at a first potential and which has a gas introduction pipe into which a target gas is introduced; a tubular outer metallic member which surrounds the radially outer circumference of the inner metallic member and which is attached to a gas flow pipe to thereby be maintained at a ground potential; and an insulating spacer which is interposed between the inner metallic member and the outer metallic member so as to electrically insulate them from each other and which has a tubular gas contact portion which is exposed to the interior of the gas flow pipe and comes into contact with the gas under measurement. The insulating spacer has a heater for heating the gas contact portion. The heater includes a heat generation resistor embedded in the insulating spacer.
Abstract translation: 颗粒传感器包括：内部金属构件，其保持在第一电位并且具有导入目标气体的气体导入管; 管状的外部金属构件，其围绕内部金属构件的径向外周并且附接到气体流管，从而保持在地电位; 绝缘间隔件插入在内金属构件和外金属构件之间，以使它们彼此电绝缘，并且具有暴露于气体流管的内部并与气体流管接触的管状气体接触部分 正在测量的气体。 绝缘间隔件具有加热气体接触部分的加热器。 加热器包括嵌入绝缘间隔件中的发热电阻器。
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公开(公告)号：US20150114087A1
公开(公告)日：2015-04-30
申请号：US14515647
申请日：2014-10-16
Applicant: NGK SPARK PLUG CO., LTD.
Inventor： Takeshi SUGIYAMA , Masayuki MOTOMURA , Toshiya MATSUOKA , Keisuke TASHIMA
CPC classification number: G01N15/0656 , F01N13/008 , F01N2560/05 , G01M15/102 , G01N2015/0046
Abstract: A particulate measurement system measures the amount of particulates when at least one or a plurality of three operating condition parameters selected from speed of the vehicle, rotational speed of the internal combustion engine and torque of the internal combustion engine fall within previously set respective ranges, and the particulate measurement system does not measure the amount of particulates or invalidates the result of measurement of the amount of particulates when the one or plurality of operating condition parameters do not fall within the previously set respective ranges.
Abstract translation: 当从车辆速度，内燃机的转速和内燃机的扭矩落入预先设定的各个范围内的至少一个或多个三个操作条件参数时，微粒测量系统测量颗粒的量，以及 当一个或多个操作条件参数不在先前设定的相应范围内时，微粒测量系统不测量微粒的量或使微粒量的测量结果无效。
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公开(公告)号：US20200011780A1
公开(公告)日：2020-01-09
申请号：US16505262
申请日：2019-07-08
Applicant: NGK SPARK PLUG CO., LTD.
Inventor： Takeshi SUGIYAMA , Yoshinori HIBINO
Abstract: A particulate detection apparatus for controlling a particulate sensor which detects the amount of particulates discharged from a filter for collecting particulates contained in exhaust gas. The particulate sensor includes a detection section configured to electrify particulates contained in exhaust gas so as to produce electrified particulates. The particulate detection apparatus includes a period judgment section, an output obtainment section and an anomaly judgment section. The period judgment section judges whether or not the present point in time is within a previously set anomaly determination period just after completing a filter regeneration process. The output obtainment section obtains a sensor output representing the result of detection by the particulate sensor in the case where the present point in time is judged to be within the anomaly determination period. The anomaly judgment section judges whether or not the particulate sensor is anomalous based on the sensitivity characteristic of the sensor output.
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公开(公告)号：US20190293601A1
公开(公告)日：2019-09-26
申请号：US16357467
申请日：2019-03-19
Applicant: NGK SPARK PLUG CO., LTD.
Inventor： Takeshi SUGIYAMA
IPC: G01N27/62
Abstract: A particulate detection apparatus for controlling a particulate sensor detecting an amount of particulates in exhaust gas and including a calculation section, cumulating section, and anomaly determination section. The calculation section is configured to calculate, every time a previously set unit measurement time elapses, the value of a signal current or converted value representing the amount of electrified particulates. The cumulating section is configured to cumulate the value of the signal current or converted value thereof to thereby calculate a cumulative value. The anomaly determination section is configured to determine whether or not an amount of change in the cumulative value in a unit cumulating time set to be longer than the unit measurement time is greater than a previously set anomaly determination value, and to determine that the detection performance of the detection section is anomalous when the amount of change is greater than the anomaly determination value.
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