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。