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Method and device for detecting oxygen sensor and oxygen sensor

An oxygen sensor, oxygen ion technology, applied in the field of oxygen sensor and detection device, detection oxygen sensor, can solve the problems of ionization channel blockage or crack, inaccurate detection results, etc., to fill the detection gap, improve quality, and eliminate hidden troubles Effect

Active Publication Date: 2013-11-20
北京德尔福万源发动机管理系统有限公司
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Problems solved by technology

[0004] The invention provides a method for detecting an oxygen sensor, an oxygen sensor and a detection device, which are used to solve the problem that the detection result obtained by using the existing detection technology is inaccurate when there are defects such as blockage or cracks in the ionization channel of the oxygen sensor

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  • Method and device for detecting oxygen sensor and oxygen sensor
  • Method and device for detecting oxygen sensor and oxygen sensor
  • Method and device for detecting oxygen sensor and oxygen sensor

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Embodiment Construction

[0021] In order to make the technical problems, technical solutions and advantages to be solved by the present invention more clear, the following will be described in detail with reference to the accompanying drawings and specific embodiments. The invention discloses an oxygen sensor ionization channel detection process and equipment.

[0022] like figure 1 As shown, the oxygen sensor includes: harness connector 1 , protective layer 2 , outer electrode 3 , (zirconia) ionization channel 4 , inner electrode 5 , air reference cavity 6 , and insulating layer 7 .

[0023] like figure 2 As shown, a method for detecting an ionization channel of an oxygen sensor is applied to detect an oxygen sensor, the oxygen sensor at least includes: an outer electrode, an ionization channel and an inner electrode, wherein the outer electrode and the inner electrode are located on both sides of the ionization channel ; methods include:

[0024] Step 101, within a first predetermined time, appl...

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Abstract

The invention provides a method and a device for detecting an oxygen sensor and the oxygen sensor. The method is used for detecting the oxygen sensor, and comprises the following steps of: 1, applying first voltage to the oxygen sensor within first preset time, and heating an ionized channel continuously; 2, applying second voltage to the oxygen sensor within second preset time, converting electrons obtained by outer electrode oxygen molecules at an outer electrode into outer electrode oxygen ions, and converting electrons obtained by inner electrode oxygen molecules at an inner electrode into inner electrode oxygen ions; and 3, checking a voltage signal between the outer electrode and the inner electrode within third preset time. By the technical scheme, after the oxygen sensor is activated, the oxygen molecules are subjected to electrochemical reaction on the inner electrode / outer electrode to be converted into the oxygen ions; and the oxygen ions move in the ionized channel to trigger the change of output voltage and judge whether the ionized channel has the performance defects such as blockage or cracks and the like or not according to the output voltage, so the electrical performance of the ionized channel can be detected.

Description

technical field [0001] The invention relates to automobile detection technology, in particular to a method for detecting an oxygen sensor, an oxygen sensor and a detection device. Background technique [0002] Automotive oxygen sensor is a key sensing component in the electronic fuel injection engine control system. Defective oxygen sensors fail after a period of operation, failing to provide the correct feedback signal to the electronic control unit (ECU), causing the car to fail to start. [0003] In the process of realizing the present invention, the inventor found that there are at least the following problems in the prior art: the traditional detection method for detecting the oxygen sensor is to measure the output voltage and reaction time of the oxygen sensor, but if the oxygen ionization channel is blocked or cracked and other defects, it is difficult to find these defects using the above detection method. SUMMARY OF THE INVENTION [0004] The invention provides ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N27/26
Inventor 吴彦铎
Owner 北京德尔福万源发动机管理系统有限公司
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