Fault detection method and system for three-effect catalyzer

A three-way catalytic converter and fault detection technology, applied in the testing, instruments, measuring devices of machinery/structural components, etc., can solve the problems of pollution out of control, unable to meet the needs of new automobile maintenance, etc., to reduce misdiagnosis and good fault shielding Action, connection simple effect

Inactive Publication Date: 2006-05-10
XIHUA UNIV
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  • Summary
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Problems solved by technology

However, in actual use, many three-way catalytic converters often fail before their service life, resulting in out-of-control pollution. Therefore, it is necessary to test the catalytic converters equipped with vehicles in use to diagnose whether they are invalid
The traditional maintenance method based on empirical judgment can no longer meet the maintenance needs of new vehicles

Method used

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  • Fault detection method and system for three-effect catalyzer
  • Fault detection method and system for three-effect catalyzer
  • Fault detection method and system for three-effect catalyzer

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Embodiment Construction

[0022] exist figure 1 In the schematic structural diagram of the system shown, it includes two chassis, a five-component exhaust gas analyzer 6 and a laptop computer 5 . After removing the main and auxiliary oxygen sensors of the three-way catalytic converter 3, it is used as the interface of the front and rear exhaust gas introduction channels. Temperature sensors 7 and 8 are installed at the interface, and the exhaust gas is first introduced into a chassis, in which an oxygen sensor 10, a pressure transmitter 9, solenoid valves 1, 2 and a tee 4 are integrated, and the exhaust gas passes through the tee and the exhaust gas The outlet 13 leads to the five-component analyzer 6 , and the signal detected by the sensor enters another chassis, which integrates a USB data acquisition card and a power supply 12 to form a data acquisition device 4 . Finally, the collected data is input into the notebook computer 5 through the USB interface, and the signal of the exhaust gas analyzer ...

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Abstract

Disclosed is a method for detecting defects of three-way catalytic reactor and system. The invention is characterized in that it can realize detecting defects automatically, intelligently and rapidly. The inventive method comprises steps of: measuring following parameters: previous and later pressure parameters, temperature parameters, conversion rate and oxygen content parameters; comparing the measured results with previously stored sample parameters; outputting comparing results. The invention has the advantages of releasing the conventional mode of detecting catalytic reactor defects with experiences.

Description

technical field [0001] The invention relates to an automobile fault detection technology, in particular to a fault detection technology for a three-way catalytic converter of an automobile. Background technique [0002] Automobile is the most familiar and common means of transportation for people, and it plays a very important role in people's life. The automobile industry provides a huge driving force for the development of the national economy. However, the increase in car ownership has also brought about increasingly serious environmental problems, resulting in the deterioration of the ecological environment and seriously endangering human health. The successful development of the three-way catalytic converter has made a breakthrough in automotive emission control technology, which can make CO, HC and NO emitted by gasoline vehicles x At the same time, it is reduced by more than 90%, which greatly reduces the impact of motor vehicle emissions on urban air quality. At p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M17/007G01M99/00
Inventor 陈翀唐岚税绍军
Owner XIHUA UNIV
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