gas sensor
A gas sensor and sensor element technology, which is applied to instruments, scientific instruments, measuring devices, etc., can solve the problems of sensor output error and reduce the air permeability of filter 174, etc.
Active Publication Date: 2015-09-16
NGK SPARK PLUG CO LTD
View PDF7 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0007] On the other hand, if water, oil, dust, etc. collect to cover the rear end surface of the filter 174, the air permeability of the filter 174 will be reduced, and reference oxygen (atmosphere) cannot be sufficiently introduced into the inside of the gas sensor 2000, resulting in Possibility of error in sensor output
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0041] Hereinafter, embodiments of the present invention will be described.
[0042] figure 1 is an overall cross-sectional view along the longitudinal direction of the gas sensor (oxygen sensor) 200 according to the embodiment of the present invention, figure 2 is a perspective view of the sensor element 10, image 3 is a bottom view of the separator 166 when viewed from the front end side, Figure 4 is a plan view of the grommet 170 when viewed from the rear end side, Figure 5 is a perspective top view of the grommet 170 when viewed from the rear end side, Figure 6 is a perspective sectional view in a state where the terminal metal pieces 21a, 21b, 22a, and 22b are incorporated into the separator 166, Figure 7 is a top perspective view of the grommet 170 holding the filter 174 viewed from the rear end side, and Figure 8 It is a plan view when the grommet 170 holding the filter 174 is seen from the rear end side.
[0043] The gas sensor 200 is an oxygen sensor tha...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
Provided is a gas sensor whereby, despite a planar sensor element being made less wide, the width of a discharge trench provided to a rear end surface of a sealing member is increased and moisture or oil is reliably discharged. A gas sensor (200) provided with: a planar sensor element (10) having at least two electrode pads (11a-12b); an insulating member (166); terminal fittings (21a-22b) retained by the insulating member and arranged to respectively face the electrode pads; a lead wire (146) electrically connected to the rear end side of the terminal fittings; a sealing member (170) having at least three lead wire insertion holes (170a) and a through hole (170h), the sealing member (170) being arranged at the rear end side of the insulating member; and a filter (174) for blocking off the through hole, wherein at least some of the distances among pitch distances G1, G2 of the lead wire insertion holes are longer and a discharge trench (170g) is formed on a rear end surface of the sealing member, the discharge trench extending across the lead wire insertion holes that form the longer pitch distance G2.
Description
technical field [0001] The invention relates to a gas sensor comprising a sensor element for detecting the concentration of a gas to be detected. Background technique [0002] As a sensor for detecting the concentration of a gas to be detected such as oxygen in the exhaust gas of an automobile or the like, a sensor having a sensor element extending in the axial direction and including a solid electrolyte having oxygen ion permeability and a sensor element is known. opposite electrode of the battery. [0003] As such a sensor, there is known an external air introduction type gas sensor in which reference oxygen (atmosphere) which generates a reference potential of a sensor output of a battery is introduced from the outside of the gas sensor (Patent Documents 1 and 2). For example, if Figure 11 As shown, in the external air introduction type gas sensor 2000, the air introduction hole 1700h penetrating in the axis O direction is provided at the center of the rubber grommet (e...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): G01N27/409
CPCG01N27/4077
Inventor 大场健弘山田裕一伊藤慎悟多比良大辅古田纮也
Owner NGK SPARK PLUG CO LTD