An oxygen sensor durability test device

Abstract

The invention relates to an oxygen sensor durability test device, which comprises a frame, a display stand arranged above the frame, a chamber arranged in the frame, an oxygen sensor environment simulation test system arranged in the chamber, and an oxygen sensor driven The drive system that enters the oxygen sensor environment simulation test unit and the feedback system that feeds back the test data of the oxygen sensor, the drive system includes an oxygen sensor placement position that is more than one oxygen sensor placement and drives any oxygen sensor placement The driving part of the oxygen sensor environment simulation test system is entered, and the oxygen sensor environment simulation test system includes a test chamber, an ignition assembly for igniting and heating the test chamber, a heating unit for heating the oxygen sensor, and a control gas-fuel ratio in the test chamber The gas injection unit includes a gas intake control component and an air intake control component.

Description

technical field [0001] The invention relates to the field of oxygen sensors, in particular to a test device for performing durability tests on oxygen sensors. Background technique [0002] Automobile oxygen sensor is a key sensing component in the engine control system, and is a key part to control automobile exhaust emissions, reduce automobile environmental pollution, and improve the fuel combustion quality of automobile engines. Durability test is a test to determine the service life of the oxygen sensor under specified use and maintenance conditions, and to predict or verify the weak links and dangerous parts of the structure. The test time of the durability test is generally longer than that of the reliability test. Through the durability test, it is possible to find out which parts have reliability problems in the design and manufacture of the product, so as to improve the design or improve the process level. Calculate the service life of new products. [0003] Exist...

AI Technical Summary

Problems solved by technology

[0003] Existing durability test devices are usually set in an exhaust pipe that simulates the driving environment of a car to simulate a real environment for the oxygen sensor. However, such a durability test device is not only cumbersome to implement, but also the real environment It is also relatively distorted. The most important thing is that it is necessary to manually replace the next oxygen sensor, which causes a lot of waste of manpower and material resources.

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