Repair refers to repairing and straightening out damaged and untidy objects and things. Below, I will share the relevant papers on automobile maintenance for you, hoping to help you!
1 preface
2 1 century, as the crystallization of human wisdom, cars have gradually become a part of people's lives. In the process of automobile use, influenced by subjective and objective factors, there will be problems and failures, which will reduce the performance and safety of automobiles. Different from the traditional times, modern automobile maintenance requires high technology, which requires efficient diagnosis technology to improve the scientificity of automobile maintenance, ensure the stability of automobiles and ensure people's travel safety. Therefore, it is of great practical significance to strengthen the application of electronic diagnosis technology in modern automobile maintenance.
2. Defects of traditional automobile diagnosis technology
Traditional diagnostic technology refers to a diagnostic technology used to eliminate and repair automobile faults when the automobile is born. This technology mainly makes intuitive diagnosis through the long-term accumulated work experience of maintenance personnel. Under the condition of not disassembling the car, the maintenance personnel judge according to their own hearing, vision and smell, in which hearing mainly judges whether the engine of the automobile parts has noise; Vision is mainly to observe the wear of parts, through which the failure risk and its causes can be diagnosed as soon as possible, so as to carry out maintenance and parts replacement [1]. Although manual inspection can improve the accuracy of maintenance to a certain extent, we can't determine the potential hidden dangers. In particular, the structure of modern cars is becoming more and more complex, and many hidden dangers are difficult to observe with the naked eye, which makes people always in danger.
3 characteristics of modern automobile maintenance technology
With the development of automobile modernization, the maintenance technology has also made great progress and presented uniqueness. Specifically, first of all, the testing equipment is perfect. Electronic information technology has gradually become a part of the car and penetrated into the main structure [2]. Therefore, automobile testing equipment is also developing in the direction of perfection and modernization, and the high technology of testing equipment provides great support for automobile maintenance. Secondly, brand-new diagnostic equipment and technology have been applied in reality, which has broken through the disadvantages and defects of traditional maintenance methods to some extent. With the help of advanced equipment, maintenance personnel can detect the actual and potential faults of automobiles and improve the effectiveness of maintenance. Finally, in automobile maintenance, the setting and application of various electronic devices have been widely used. Although it is still in the development stage, the mainstream trend of future development is full electronization, which has laid a solid foundation for automobile maintenance. It can be seen that the application of electronic diagnosis technology is an inevitable choice for the development of modern automobile, and only in this way can the automobile industry achieve sustainable development.
Application of electronic diagnosis technology in modern automobile maintenance
Electronic diagnosis technology can evaluate and analyze the comprehensive ability of automobile gasoline operation in practical application. The specific application is as follows:
4. 1 engine.
Engine fuel system is the most prone to problems in cars, and too low or too high oil pressure will cause failures. If the engine power is insufficient, it proves that the oil pressure is too low to meet the rapid start of the car. Not only that, it will also affect the driving stability of the car, and many of its components will be damaged to varying degrees, shortening the running life of the car. But if the oil pressure is too high, it will produce a lot of oil consumption, emit a lot of black smoke, waste energy and pollute the environment. In this regard, inspectors can use electronic diagnosis technology to detect the electronic signal generated by the fuel system, judge whether there is a problem in the fuel system according to the numerical value, and take effective measures to adjust it [3]. Generally speaking, the surface of metal equipment will be worn after long-term friction, and once it enters lubricating oil and hydraulic oil, it will affect the good operation of the equipment. Therefore, in the process of repair, electronic diagnosis technology can be used to detect the number of abrasive particles in oil samples, judge the wear degree of equipment, and judge the possible risks of equipment based on this.
4.2 internal combustion engine
The structure of internal combustion engine is complex, involving a large number of parts, which increases the difficulty of fault identification. In order to improve the effectiveness of maintenance, maintenance personnel can use electronic diagnosis technology to judge the abnormal sound of internal combustion engine. In this process, if the amplitude of a certain area is obvious, they can amplify the sound and find the location of abnormal noise [4]. Generally speaking, they can get the abnormal noise frequency with the help of highly sensitive listeners, and then find the specific location through the sound. In addition, the use of spectrum analyzer can avoid excessive interference from external factors and improve the accuracy of judgment.
4.3 Chassis output power
Chassis is the foundation of stable operation of automobile. Therefore, during the test, the dynamometer can be used to test the output power of the chassis, observe the power on the dashboard and judge the power on the driving wheel, so as to repair the existing problems. It is worth noting that when collecting fault characteristic signals, most of them are unstable signals. If simple equipment is used for detection, it will be easily disturbed and affect the accuracy of fault diagnosis. In this regard, with the help of wavelet analysis equipment, interference can be eliminated in local and time domain. Not only that, the device can also present details to avoid missing some potential faults.
4.4 Braking performance
At present, the common automobile braking methods in China are reaction type and inertia type, in which the reaction type is composed of turbine reducer, torque indicator and other equipment. In order to test the braking performance of the automobile reasonably, we can diagnose the turbine, chain and other equipment related to two coaxial wheels from the rear side, apply a reaction force to the drum to make the lever move, and then judge whether the braking performance of the automobile is good or not according to the data detected by the testing equipment. With the continuous improvement of automobile electronization, technicians should also increase the research on electronic diagnosis technology, continuously improve the application effect of diagnosis technology, and coordinate the diagnosis level with the development trend of automobiles.
5 conclusion
To sum up, the development of modern automobile is getting faster and faster, which puts forward higher requirements for fault diagnosis and maintenance, and electronic diagnosis technology has incomparable advantages over traditional maintenance technology, which has attracted more and more attention. In practice, the electronic diagnosis technology can diagnose the internal combustion engine, braking performance and chassis output power of the automobile, find out the problems and deficiencies in time, and take corresponding measures to deal with them, so as to give full play to the performance of various automobile equipment, prolong the running life of the automobile to a certain extent, ensure the safety and reliability of people's travel, and provide guarantee for the sound and rapid development of the automobile industry.
References:
[1] Meixiushan. Application of electronic diagnosis technology in modern automobile maintenance [J]. Electronic Technology and Software Engineering, 2015 (23):103 ~104.
[2] Wei. Analysis on the application of electronic diagnosis technology in automobile maintenance [J]. Prospect of science and technology, 20 16(02): 145.
[3] Cheng. Application of electronic diagnosis in automobile maintenance technology [J]. Technology and Market, 2016 (04): 66,68.
[4] When will it be clear? On the application of electronic diagnosis in modern automobile maintenance technology [J]. Science and Education Literature (next issue) 2014 (04):115, 1 18.
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