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NOx sensor

A nitrogen oxide and sensor technology, applied in instruments, scientific instruments, measuring devices, etc., can solve the problems of high power consumption and short service life of nitrogen oxide sensors, and achieve faster cold start speed, improved heating efficiency, high pumping efficiency, etc. The effect of oxygen capacity

Active Publication Date: 2022-08-02
INST OF ADVANCED TECH UNIV OF SCI & TECH OF CHINA
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  • 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 technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0023] It should be noted that if there are directional indications (such as up, down, left, right, front, back, etc.) involved in the embodiments of the present invention, the directional indications are only used to explain a certain posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication also changes accordingly.

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

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Abstract

The invention discloses a nitrogen oxide sensor, which comprises a first solid electrolyte layer, a second solid electrolyte layer and a third solid electrolyte layer. The side of the second solid electrolyte layer facing the third solid electrolyte layer is provided with a common electrode. The side of the second solid electrolyte layer facing the first solid electrolyte layer is provided with a main pump electrode, an auxiliary pump electrode and a measurement pump electrode, the side of the first solid electrolyte layer facing away from the second solid electrolyte layer is provided with a reference electrode, and the third solid electrolyte layer is provided with a reference electrode. A heater is provided on the side of the electrolyte layer facing the second solid electrolyte layer. The nitrogen oxide sensor in the present invention shortens the distance between the main pump electrode, the auxiliary pump electrode, the measuring pump electrode, the common external electrode and the heater, improves the heating efficiency of the nitrogen oxide sensor, and reduces the power consumption in the working state , and at the same time can prolong the service life of nitrogen oxide sensor.

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 automobile exhaust monitoring and emission control systems, and are mainly used to accurately measure the concentration of nitrogen oxides in automobile exhaust in real time. The common electrode and the heating electrode of the existing nitrogen oxide sensor are located at the upper and lower ends of the thickness direction of the sensitive element respectively, resulting in a 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, which not only increases the power consumption of the sensor, but also affects the service life of the sensitive element to a certain extent. SUMMARY OF THE INVENTION [0003] ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
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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