公开(公告)号：US10006883B2

公开(公告)日：2018-06-26

申请号：US14591499

申请日：2015-01-07

Applicant: NGK SPARK PLUG CO., LTD.

Inventor： Takeshi Sugiyama ,  Masayuki Motomura ,  Norimasa Osawa ,  Keisuke Tashima ,  Hirokazu Murase ,  Toshiya Matsuoka

IPC: G01N27/70

CPC classification number: G01N27/70

Abstract: A particulate sensor (1) includes an ion source (15) and a reference potential member (45). The particulate sensor (1) detects particulates S contained in a gas under measurement EG by means of ions CP. The ion source (15) includes a ceramic structure (100) having a ceramic laminate (101) and a discharge electrode member (110). The discharge electrode member (110) has an inter-layer portion (112A, 111) embedded between the layers of the ceramic laminate (101) and an exposed portion (112B) extending from the inter-layer portion (112A, 111) to a position outside the ceramic laminate (101). The discharge electrode member (110) generates the gaseous discharge between the reference potential member (45) and the exposed portion (112B) including one or more needle-shaped distal end portions (1125) upon application of a constant DC discharge potential PV2.

公开(公告)号：US10094756B2

公开(公告)日：2018-10-09

申请号：US14872447

申请日：2015-10-01

Applicant: NGK SPARK PLUG CO., LTD.

Inventor： Toshiya Matsuoka ,  Takeshi Sugiyama

IPC: G01N15/06 ,  G01N15/00 ,  G01M15/10

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.

公开(公告)号：US10067047B2

公开(公告)日：2018-09-04

申请号：US14794245

申请日：2015-07-08

Applicant: NGK SPARK PLUG CO., LTD.

Inventor： Toshiya Matsuoka

IPC: G01N15/06 ,  G01M15/10 ,  G01N15/00

Abstract: A particle detection system includes a sensor main body having an electrification section for electrifying particles contained in a gas under measurement so as to produce electrified particles, and detects the particles contained in the gas under measurement by using the electrified particles. The sensor main body has a heater portion which generates heat upon energization so as to heat at least a portion of the electrification section. The particle detection system detects a burnable period (for example, fuel cut period) during which the gas under measurement contains oxygen for burning particles adhering to the electrification section, and energizes the heater portion during the burnable period so as to heat at least a portion of the electrification section to a temperature at which the adhering particles burn.

公开(公告)号：US20150204759A1

公开(公告)日：2015-07-23

申请号：US14420960

申请日：2013-09-10

Applicant: NGK SPARK PLUG CO., LTD.

Inventor： Takeshi Sugiyama ,  Masayuki Motomura ,  Keisuke Tashima ,  Toshiya Matsuoka

IPC: G01M15/10 ,  G01N33/00 ,  G01N15/06

CPC classification number: G01M15/102 ,  G01N15/06 ,  G01N15/0656 ,  G01N27/70 ,  G01N33/0009 ,  G01N2015/0046

Abstract: A particulate sensor (1) which detects particulates S contained in a gas under measurement (EG) flowing within a gas flow pipe (EP) has a space forming portion (12) and an ion source (15). The space forming portion (12) projects into the gas flow pipe EP and forms an internal space MX. The space forming portion (12) has an introduction port (43I) and a discharge port (48O) for discharging from the internal space MX the gas EGI introduced through the introduction port (43I). The source (15) produces ions CP by gaseous discharge. The space forming portion (12) is configured such that the introduced gas EGI is discharged from the internal space MX through the discharge port (48O), the gas under measurement EG is introduced into the internal space MX through the introduction port (43I), and the introduced gas EGI is mixed with the ions CP produced by the ion source (15).

Abstract translation: 检测在气体流量管（EP）内流动的被测气体（EG）中所含的微粒S的微粒传感器（1）具有空间形成部（12）和离子源（15）。 空间形成部分（12）突出到气体流量管EP中并形成内部空间MX。 空间形成部分（12）具有用于从内部空间MX排出通过引入口（43I）引入的气体EGI的引入口（43I）和排出口（48O）。 源（15）通过气体放电产生离子CP。 空间形成部分（12）被构造成使得引入气体EGI通过排出口（48O）从内部空间MX排出，测量气体EG通过引入口（43I）被引入到内部空间MX中， 引入气体EGI与由离子源（15）产生的离子CP混合。

公开(公告)号：US09476807B2

公开(公告)日：2016-10-25

申请号：US14372521

申请日：2013-02-13

Applicant: NGK SPARK PLUG CO., LTD.

Inventor： Masayuki Motomura ,  Takeshi Sugiyama ,  Keisuke Tashima ,  Norimasa Osawa ,  Toshiya Matsuoka ,  Hitoshi Yokoi

IPC: G01N27/70 ,  G01N1/22 ,  G01N33/00 ,  G01N15/06 ,  G01M15/10

CPC classification number: G01N1/2252 ,  F01N2560/02 ,  F01N2560/05 ,  G01M15/102 ,  G01N15/0656 ,  G01N33/0027 ,  G01N33/0036 ,  G01N2291/02408

Abstract: A particulate sensor including a sensor unit (300) having an ion generation section (611, 361, 322); an electric charge section (612) for electrically charging at least portion of particulates S using ions PI; a capture section (616, 617, 316, 326, 362) for trapping at least portion of the ions PI not used for electrically charging the particulates S; and a sensor ground section (340, 310v, 330v3) connected to the capture section and having a first floating potential corresponding to the amount of the ions PI trapped by the capture section. The sensor unit can detect the amount of the particulates S in the gas on the basis of the electric potential of the sensor ground section. The sensor ground section is covered with insulating ceramic at that outer portion of the sensor unit which comes into contact with the gas.

Abstract translation: 一种颗粒传感器，包括具有离子产生部分（611,361,322）的传感器单元（300）; 用于使用离子PI对至少部分微粒S进行充电的电荷部分（612）; 捕获部分（616,617,316,326,362），用于捕获不用于对微粒S进行充电的至少部分离子PI; 以及传感器接地部分（340,310v，330v3），其连接到所述捕获部分并且具有对应于由所述捕获部分捕获的离子PI的量的第一浮动电位。 传感器单元可以基于传感器接地部分的电位来检测气体中的微粒S的量。 在与气体接触的传感器单元的外部，传感器接地部分覆盖有绝缘陶瓷。

公开(公告)号：US20140352405A1

公开(公告)日：2014-12-04

申请号：US14374247

申请日：2013-03-08

Applicant: NGK SPARK PLUG CO., LTD.

Inventor： Masayuki Motomura ,  Takeshi Sugiyama ,  Keisuke Tashima ,  Toshiya Matsuoka ,  Hitoshi Yokoi

IPC: F01N11/00 ,  G01N27/68 ,  G01M15/10

CPC classification number: F01N11/00 ,  F01N2560/05 ,  G01M15/102 ,  G01N15/0656 ,  G01N27/68 ,  G01N2015/0046 ,  G01R31/025

Abstract: A particulate detection system (1) for detecting the amount of particulates S in a gas under measurement EG includes a detection section (10), a drive circuit (210, 240), and a drive control section (225). The detection section includes a first potential member (31, 12, 13) maintained at a first potential PV1, a second potential member (14, 51, 53) maintained at a second potential PVE, PV3, and an insulating member (121, 77, 76) disposed between the first and second potential members. The system includes insulation test means (215, S3, 245, S5) for testing the degree of insulation between the first and second potential members. The drive control section includes drive permission/prohibition determination means S4, S6 for determining, on the basis of the degree of insulation tested by the insulation test means, whether to permit the drive of the detection section by the drive circuit.

Abstract translation: 用于检测被测气体中的微粒S量的微粒检测系统（1）包括检测部分（10），驱动电路（210,240）和驱动控制部分（225）。 检测部分包括保持在第一电位PV1的第一电位部件（31,12,13），保持在第二电位PVE，PV3的第二电位部件（14,51,53）和绝缘部件 ，76）设置在第一和第二电位部件之间。 该系统包括用于测试第一和第二潜在构件之间的绝缘程度的绝缘测试装置（215,3S，245，S5）。 驱动控制部分包括驱动允许/禁止确定装置S4，S6，用于基于由绝缘测试装置测试的绝缘程度来确定是否允许驱动电路驱动检测部分。

公开(公告)号：US10209173B2

公开(公告)日：2019-02-19

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

IPC: G01N15/06 ,  G01N33/00 ,  G01N15/00

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.

公开(公告)号：US09915587B2

公开(公告)日：2018-03-13

申请号：US14420960

申请日：2013-09-10

Applicant: NGK SPARK PLUG CO., LTD.

Inventor： Takeshi Sugiyama ,  Masayuki Motomura ,  Keisuke Tashima ,  Toshiya Matsuoka

IPC: G01N15/10 ,  G01M15/10 ,  G01N15/06 ,  G01N27/70 ,  G01N33/00 ,  G01N15/00

CPC classification number: G01M15/102 ,  G01N15/06 ,  G01N15/0656 ,  G01N27/70 ,  G01N33/0009 ,  G01N2015/0046

Abstract: A particulate sensor (1) which detects particulates S contained in a gas under measurement (EG) flowing within a gas flow pipe (EP) has a space forming portion (12) and an ion source (15). The space forming portion (12) projects into the gas flow pipe EP and forms an internal space MX. The space forming portion (12) has an introduction port (43I) and a discharge port (48O) for discharging from the internal space MX the gas EGI introduced through the introduction port (43I). The source (15) produces ions CP by gaseous discharge. The space forming portion (12) is configured such that the introduced gas EGI is discharged from the internal space MX through the discharge port (48O), the gas under measurement EG is introduced into the internal space MX through the introduction port (43I), and the introduced gas EGI is mixed with the ions CP produced by the ion source (15).

公开(公告)号：US09581069B2

公开(公告)日：2017-02-28

申请号：US14374247

申请日：2013-03-08

Applicant: NGK SPARK PLUG CO., LTD.

Inventor： Masayuki Motomura ,  Takeshi Sugiyama ,  Keisuke Tashima ,  Toshiya Matsuoka ,  Hitoshi Yokoi

IPC: G01N15/06 ,  F01N11/00 ,  G01M15/10 ,  G01N27/68 ,  G01N15/00 ,  G01R31/02

CPC classification number: F01N11/00 ,  F01N2560/05 ,  G01M15/102 ,  G01N15/0656 ,  G01N27/68 ,  G01N2015/0046 ,  G01R31/025

Abstract: A particulate detection system (1) for detecting the amount of particulates S in a gas under measurement EG includes a detection section (10), a drive circuit (210, 240), and a drive control section (225). The detection section includes a first potential member (31, 12, 13) maintained at a first potential PV1, a second potential member (14, 51, 53) maintained at a second potential PVE, PV3, and an insulating member (121, 77, 76) disposed between the first and second potential members. The system includes insulation test means (215, S3, 245, S5) for testing the degree of insulation between the first and second potential members. The drive control section includes drive permission/prohibition determination means S4, S6 for determining, on the basis of the degree of insulation tested by the insulation test means, whether to permit the drive of the detection section by the drive circuit.

Abstract translation: 用于检测被测气体中的微粒S量的微粒检测系统（1）包括检测部分（10），驱动电路（210,240）和驱动控制部分（225）。 检测部分包括保持在第一电位PV1的第一电位部件（31,12,13），保持在第二电位PVE，PV3的第二电位部件（14,51,53）和绝缘部件 ，76）设置在第一和第二电位部件之间。 该系统包括用于测试第一和第二潜在构件之间的绝缘程度的绝缘测试装置（215,3S，245，S5）。 驱动控制部分包括驱动允许/禁止确定装置S4，S6，用于基于由绝缘测试装置测试的绝缘程度来确定是否允许驱动电路驱动检测部分。

公开(公告)号：US10724991B2

公开(公告)日：2020-07-28

申请号：US15598715

申请日：2017-05-18

Applicant: NGK Spark Plug Co., LTD.

Inventor： Hirokazu Murase ,  Takeshi Sugiyama ,  Toshiya Matsuoka

IPC: G01N27/70 ,  G01N15/06 ,  F01N11/00 ,  G01N33/00 ,  G01N15/00

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.