Overview of automobile maintenance

With the popularity of automobiles in China, the development of new automobile technologies has triggered changes in the automobile aftermarket. In the 20th century, automobile technology changed with each passing day with the progress of society. From the point of view of vehicle technology, the automobile has many automation functions because of the extensive use of microcomputer technology, which greatly improves the power, maneuverability, adaptability and safety of the automobile. The reliability and service life of automobiles have been greatly improved. The development of new automobile technology has greatly promoted the great changes of automobile maintenance technology and system and enterprises. The automobile maintenance industry has never faced such a big impact as today. It is difficult for the previous automobile maintenance mode to adapt to and deal with any of the above technologies. Automobile maintenance technology has gradually separated from the traditional experience maintenance mode, but increasingly relies on high technology, computer diagnosis and data analysis. The requirement for technicians has also changed from mastering only a single subject in the past to a level with strong comprehensive quality of mechatronics. At the same time, it also promotes the improvement of automobile maintenance technology in China. Compared with the previous maintenance technology learning mode, professional learning plus skill training has become the dominant idea of maintenance technology learning. /kloc-started studying in Nanjing Technician College in October, 1997 and graduated from Jinling Institute of Technology in 2003. During this period, I studied automobile application engineering, fault diagnosis of electronically controlled engine and other related courses, and obtained the certificate of advanced salary grade for automobile maintenance in 2002. Since graduation in 2003, I have been engaged in automobile and related industries. I have worked in Jinling Auto Parts Company and Fiat 4S store in Turin, Tian Yu. I started working in Nissan Huaxing 4S store in June 2004. Now engaged in after-sales service. During my work, I worked hard, studied hard and dared to ask questions. I have mastered the maintenance and fault diagnosis of Fiat cars, passed the study of Nissan Maintenance Technician Education Program (N-STEP) and obtained the qualification affirmation. In 2004, he participated in the qualification training of automobile maintenance technicians and the quality inspector training of automobile maintenance stations. It fully embodies the technical concept of "professional learning+skill training" in modern automobile maintenance. In actual production, I have also encountered classic fault cases, which need to be solved step by step, but the most important thing is to thoroughly understand the various systems (controls and mechanisms) of the vehicle. For example, sometimes I get some emergency calls about not starting, but in the past I found that the problem did not appear on the battery and starter. After understanding the use of the vehicle and further inspection, it was found that it was originally caused by carbon deposition on the accelerator. Nissan's new models are all electronic throttles. Due to the current air quality, harsh vehicle driving environment and frequent short-distance driving by some private car owners, carbon deposits at the throttle valve hinder the opening of the throttle valve. Through a large number of inspections, it is found that most of them are around 20,000 kilometers. I once touched a car and bought it for more than a year, only 8,000 kilometers, but it still couldn't start. After inspection, it was found that the throttle was stuck by carbon deposit, and the problem was solved after cleaning. Therefore, when maintaining the vehicle, we should not only consider the mileage of the vehicle, but also consider the service life, service condition and environmental conditions of the vehicle. If necessary, it is best to drive with the customer to check the symptoms. Because the client is not a professional. Let alone make any rash assumptions. Such as "the customer may mean-"or "may be the symptom mentioned". In order to completely repair the fault, it is necessary to check the symptoms from the initial stage. For intermittent faults, most of them are caused by poor contact. It is an effective method to shake the suspicious wire harness or connector by hand. We should pay attention to the following points when diagnosing vehicle maintenance: 1. A detailed understanding of the vehicle situation, especially the vehicle maintenance history, is very helpful for our diagnosis; 2. Be good at summing up experience and applying solid theoretical knowledge of automobile technology. The good combination of theory and practice also plays a vital role in automobile maintenance diagnosis; 3. Establish a perfect consulting system. Sometimes, a person's thinking is often easy to go astray, and another way of thinking may solve the problem; 4. Be good at accumulation and summary. Only by collecting and analyzing examples frequently and summing up experience can we continuously improve the level of fault diagnosis. In the daily use of vehicles, if the following points can be achieved, the vehicles will show better performance in long-term use: 1. Within the initial 1000 km. Do not drive at low speed or high speed for a long time. Be sure to use the appropriate gear to maintain a certain speed, do not tow any other vehicles, and regularly check the oil level of engine oil and transmission oil. 2. It is recommended to confirm that the tire pressure is within the normal specification range, keep an appropriate distance between cars when driving, keep the speed stable, do not accelerate or decelerate sharply, and go to the maintenance station regularly to ensure that the car is in good condition. In order to reduce fuel consumption, you should avoid preheating the car for a long time. Once the engine runs smoothly, start driving; Avoid quick startup; Ensure that the engine is in good condition; Use air conditioning system when necessary; Slow down on uneven roads; Ensure reasonable tire inflation; Don't load unnecessary items; Don't put your feet on the brake pedal when driving; Close the window at high speed; Don't drive too fast. With the continuous progress of automobile technology and the increasing specialization of automobile maintenance, "automobile doctor" is bound to become the key position of automobile maintenance, and the automobile maintenance union is increasingly unsuitable for this role. Therefore, accelerating the training of "automobile doctor" to meet the needs of the development of China's automobile maintenance industry is an important task for the structural adjustment and quality improvement of industry personnel in the future.