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Automobile exhaust system diagnosis and repair method

A technology of an automobile exhaust system and a repair method, which is applied in the field of automobile exhaust system diagnosis and repair, and can solve the problems affecting the purification efficiency of the exhaust gas purifier and the imbalance of the mixer concentration.

Inactive Publication Date: 2017-06-20
宿迁薪融智能科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, damage to any part of the engine system may cause a concentration imbalance in the mixer, which in turn affects the purification efficiency of the exhaust gas purifier.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] First establish a communication connection between the diagnostic system and the ECU of the vehicle to be tested through the communication protocol corresponding to the vehicle to be tested. The Internet uploads to the cloud database, and compares and analyzes with the original design parameters to generate test results, which are returned to the test system through the Internet, and a diagnostic report is generated, and the exhaust gas purifier is regenerated according to the diagnostic report. The regeneration treatment process is as follows: Remove the exhaust gas purifier and put it into a high-temperature furnace for calcination at 500°C for 30 minutes. Use a high-pressure air gun to purge the calcined exhaust gas purifier until no obvious dust is blown out. Put the exhaust gas purifier in the pre- Soak in the prepared cleaning agent for 30 minutes, put the exhaust gas purifier in a high-temperature furnace at 300°C and calcinate for 15 minutes to remove the residue...

Embodiment 2

[0025] The diagnostic system establishes a communication connection with the ECU of the vehicle to be tested through the communication protocol corresponding to the vehicle to be tested. The diagnostic system obtains the data stream of the entire engine electronic control system of the vehicle to be tested through the diagnostic head, and the diagnostic system uploads the obtained data stream to the The cloud database is compared with the original design parameters to generate test results. The test results are returned to the test system through the Internet and a diagnostic report is generated. According to the diagnostic report, the air flow meter in the engine electronic control system is replaced.

Embodiment 3

[0027] The diagnostic system establishes a communication connection with the ECU of the vehicle to be tested through the communication protocol corresponding to the vehicle to be tested. The diagnostic system obtains the data stream of the entire engine electronic control system of the vehicle to be tested through the diagnostic head, and the diagnostic system uploads the obtained data stream to the The cloud database is compared with the original design parameters to generate test results, which are returned to the test system through the Internet and a diagnostic report is generated, and the oxygen sensor in the engine electronic control system is replaced according to the diagnostic report.

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PUM

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Abstract

The invention discloses an automobile exhaust system diagnosis and repair method. The automobile exhaust system diagnosis method comprises the following steps that (1) communication connection is built; (2) data flow is obtained; (3) a test result is generated; (4) a diagnosis report is generated; and (5) the proper repair method is selected according the diagnosis report. According to the automobile exhaust system repair method, problem element repair and replacement and tail gas purifier regeneration treatment are conducted on a whole engine system according to the diagnosis result of a special test system; and purification efficiency of a tail gas purifier is recovered and improved while a good working condition of the engine system is ensured, and harm of harmful emissions such as carbon monoxide (CO), hydrocarbon (HC), nitrogen oxide (NO<x>), PM and sulfide to the human health and the environment is fundamentally eliminated.

Description

[0001] Technical field: [0002] The invention relates to the field of diagnosis of automobile emission control systems, in particular to a method for diagnosing and repairing an automobile exhaust system. [0003] technical background: [0004] With the rapid development of China's automobile industry, the number of automobiles is increasing day by day. Harmful substances such as carbon monoxide (CO), hydrocarbons (HC), nitrogen oxides (NOx), PM and sulfides emitted by the engine are harmful to human health and Environmental hazards are also increasing day by day. In this regard, countries around the world have formulated corresponding regulations and standards in order to control the harmful emissions of automobiles at a lower level. At present, automobile exhaust purifier is the most effective way to treat and reduce exhaust gas and PM emissions. In recent years, the automotive industry has also developed and created many new technologies and new devices for purifying exha...

Claims

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Application Information

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IPC IPC(8): F01N11/00F02B77/04
CPCF01N11/00F01N2260/04F02B77/04Y02T10/40
Inventor 杨广乾
Owner 宿迁薪融智能科技有限公司