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Nitrogen oxide sensor

A nitrogen oxide sensor technology, applied in instruments, scientific instruments, measuring devices, etc., can solve the problems of short service life and high power consumption of nitrogen oxide sensors

Active Publication Date: 2021-07-06
INST OF ADVANCED TECH UNIV OF SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The main purpose of the present invention is to propose a nitrogen oxide sensor, which aims to solve the technical problems of high power consumption and short service life of the nitrogen oxide sensor in the prior art

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Embodiment Construction

[0022] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0023] It should be noted that if there is a directional indication (such as up, down, left, right, front, back...) in the embodiment of the present invention, the directional indication is only used to explain the position in a certain posture (as shown in the accompanying drawing). If the specific posture changes, the directional indication will also change accordingly.

[0024] In addition, if there are descriptions involving "first", "second" and ...

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Abstract

The invention discloses a nitrogen oxide sensor. The nitrogen oxide sensor comprises a first solid electrolyte layer, a second solid electrolyte layer and a third solid electrolyte layer, and a common electrode is arranged on the side, facing the third solid electrolyte layer, of the second solid electrolyte layer. A main pump electrode, an auxiliary pump electrode and a measuring pump electrode are arranged on the side, facing the first solid electrolyte layer, of the second solid electrolyte layer, a reference electrode is arranged on the side, deviating from the second solid electrolyte layer, of the first solid electrolyte layer, and a heater is arranged on the side, facing the second solid electrolyte layer, of the third solid electrolyte layer. According to the nitrogen oxide sensor, the distances between the main pump electrode, the auxiliary pump electrode, the measuring pump electrode, the common outer electrode and the heater are shortened, the heating efficiency of the nitrogen oxide sensor is improved, the power consumption in a working state is reduced, and meanwhile, the service life of the nitrogen oxide sensor can be prolonged.

Description

technical field [0001] The invention relates to the technical field of gas sensors, in particular to a nitrogen oxide sensor. Background technique [0002] Existing nitrogen oxide sensors are important components of vehicle exhaust monitoring and emission control systems, and are mainly used to accurately measure the concentration of nitrogen oxides in vehicle exhaust in real time. The common electrode and the heating electrode of the existing nitrogen oxide sensor are respectively located at the upper and lower ends of the thickness direction of the sensitive element, resulting in low heating efficiency of the sensitive element. In order to ensure the high oxygen pumping capacity of the nitrogen oxide sensor, this requires the sensitive element A relatively high heating power must be used. When the heating power is high, it not only increases the power consumption of the sensor, but also affects the service life of the sensitive element to a certain extent. Contents of th...

Claims

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Application Information

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IPC IPC(8): G01N27/419
CPCG01N27/419
Inventor 占忠亮仝永成陈初升
Owner INST OF ADVANCED TECH UNIV OF SCI & TECH OF CHINA
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