公开(公告)号：EP1482306A3

公开(公告)日：2012-01-04

申请号：EP04253253.1

申请日：2004-06-01

Applicant: NGK SPARK PLUG CO., LTD

Inventor： Fujita, Hirok ,  Fujita, Koichi ,  Sugaya, Satoshi ,  Kato, Kenji ,  Inoue, Ryuji ,  Ishida, Noboru

IPC: G01N27/12

CPC classification number: G01N27/121

Abstract: A humidity-sensitive porous layer (13) of a humidity-sensitive element section (3) of a humidity sensor (1) is formed of a crystalline phase oxide grains such as Al 2 O 3 -SnO 2 -TiO 2 and of a glass phase such as silicate glass covering the crystalline phase. The glass phase contains an alkali metal oxide and/or alkaline earth metal oxide such as Li 2 O. The humidity sensitive porous layer (13) assumes a skeletal structure that is formed of crystalline phase oxide grains covered or coated with the glass phase. A heater (17) of the humidity sensor is controlled to heat the humidity-sensitive element section (3) at a temperature ranging from 500°C to 800°C so as to clean off the humidity-sensitive element section while an internal combustion engine is running and exhausting fouling substances. Measurement of Humidity in an exhaust gas exhausted from an exhaust gas purifying apparatus of an internal combustion engine is carried out by using the humidity sensor (1), so long as the exhaust gas temperature does not exceed 100°C regardless of whether or not the engine is running.

公开(公告)号：EP1482306A2

公开(公告)日：2004-12-01

申请号：EP04253253.1

申请日：2004-06-01

Applicant: NGK SPARK PLUG CO., LTD

Inventor： Fujita, Hirok ,  Fujita, Koichi ,  Sugaya, Satoshi ,  Kato, Kenji ,  Inoue, Ryuji ,  Ishida, Noboru

IPC: G01N27/04

CPC classification number: G01N27/121

Abstract: A humidity-sensitive porous layer (13) of a humidity-sensitive element section (3) of a humidity sensor (1) is formed of a crystalline phase oxide grains such as Al 2 O 3 -SnO 2 -TiO 2 and of a glass phase such as silicate glass covering the crystalline phase. The glass phase contains an alkali metal oxide and/or alkaline earth metal oxide such as Li 2 O. The humidity sensitive porous layer (13) assumes a skeletal structure that is formed of crystalline phase oxide grains covered or coated with the glass phase. A heater (17) of the humidity sensor is controlled to heat the humidity-sensitive element section (3) at a temperature ranging from 500°C to 800°C so as to clean off the humidity-sensitive element section while an internal combustion engine is running and exhausting fouling substances. Measurement of Humidity in an exhaust gas exhausted from an exhaust gas purifying apparatus of an internal combustion engine is carried out by using the humidity sensor (1), so long as the exhaust gas temperature does not exceed 100°C regardless of whether or not the engine is running.

Abstract translation: 一种湿度传感器，包括具有湿度敏感多孔层的湿度敏感元件部分和在湿度敏感层上形成的检测电极。 湿度敏感元件具有由氧化物和玻璃相形成的结晶相。 湿度传感器包括在传感器不进行湿度测量的时间内在500-800℃的清洁温度下加热湿度敏感元件部分的加热器。 还包括用于测量使用湿度传感器从内燃机排出的废气的湿度的方法的独立权利要求，包括用加热器（17）将感湿元件部分（3）加热到去除结垢物质的清洁温度 粘附在湿度敏感多孔层（13）的表面上，并且基于在检测电极两端测量的阻抗或电阻来测量温度不高于100℃的废气的湿度。

公开(公告)号：EP1953539A1

公开(公告)日：2008-08-06

申请号：EP07024248.2

申请日：2007-12-13

Applicant: NGK Spark Plug Co., Ltd.

Inventor： Kida, Masahito ,  Kito, Shinichiro ,  Ikawa, Koichi ,  Tsujimura, Yoshinori ,  Kojima, Takio ,  Fujita, Koichi

IPC: G01N27/12

CPC classification number: G01N27/128

Abstract: A gas sensor (1; 101; 201) comprising a substrate (15), a gas-sensitive layer (4; 104; 204) formed on the substrate (5) and containing a metal-oxide semiconductor that varies in electrical characteristics depending upon a variation of a concentration of a particular gas component in a gas mixture to be detected, as a major constituent, an insulating adhesive layer (7; 107; 207) provided on the substrate (5) and in contact with the gas-sensitive layer (4; 104; 204), and a detecting electrode (6; 106; 206) provided on the substrate (15) for detecting a variation of the electrical characteristics of the gas-sensitive layer (4; 104; 204), wherein all of a surface of the detecting electrode (6; 106; 206) on the side facing the gas-sensitive layer 84; 104; 204) is abuttingly engaged with the gas-sensitive layer (4; 104; 204).

Abstract translation: 1。一种气体传感器（1; 101; 201），包括衬底（15），形成在所述衬底（5）上并包含金属氧化物半导体的气敏层（4; 104; 204），所述金属氧化物半导体取决于 作为主要成分的被检测气体混合物中的特定气体组分浓度的变化，设置在基板（5）上并与气敏层接触的绝缘粘合剂层（7; 107; 207） （4; 104; 204）;以及设置在所述基板（15）上的检测电极（6; 106; 206），用于检测所述气敏层（4; 104; 204）的电特性的变化，其中全部 所述检测电极（6; 106; 206）的面向所述气敏层（84）的一侧的表面的位置; 104; 204）与气敏层（4; 104; 204）邻接接合。

公开(公告)号：EP1953539B1

公开(公告)日：2017-04-12

申请号：EP07024248.2

申请日：2007-12-13

Applicant: NGK Spark Plug Co., Ltd.

Inventor： Kida, Masahito ,  Kito, Shinichiro ,  Ikawa, Koichi ,  Tsujimura, Yoshinori ,  Kojima, Takio ,  Fujita, Koichi

IPC: G01N27/12

CPC classification number: G01N27/128

公开(公告)号：EP1482306B1

公开(公告)日：2014-09-24

申请号：EP04253253.1

申请日：2004-06-01

Applicant: NGK SPARK PLUG CO., LTD

Inventor： Fujita, Hiroki ,  Fujita, Koichi ,  Sugaya, Satoshi ,  Kato, Kenji ,  Inoue, Ryuji ,  Ishida, Noboru

IPC: G01N27/12

CPC classification number: G01N27/121