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10 July 2024, Volume 49 Issue 13 Previous Issue   
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New Energy Vehicle
Intelligent Connected Vehicle
Design and Research
Testing and Experiment
Process·Materials
Automobile Education
Standards·Regulations·Management


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New Energy Vehicle

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Simulation and Parametric Analysis on Composite ABS Control Strategy for Electric Vehicle ZHANG Kunheng1 , LIN Hui1 , PAN Haitao2 , WANG Yuanxi3 2024, 49(13): 1-5.  DOI: 10.16638/j.cnki.1671-7988.2024.013.001 Abstract ( )   PDF (1129KB) ( )   In order to improve the stability and safety of electric vehicle during braking, a control strategy for electric vehicle with composite anti-lock brake system (ABS) is proposed. Firstly, a simulation model of electric vehicle is established using AMESim software, and an ABS control method with four independent channels is designed using fuzzy logic control method in Simulink. Finally, the simulation is carried out under the condition of low friction coefficient of road surface. The simulation results show that the established co-simulation model and its control method can simulate the actual process of ABS braking well, ensure the wheel speed and speed keep good synchronization, and improve the steering and stability of electric vehicle. The model parameters can be adjusted, so the influence of different parameters on the ABS effect can be studied, and the simulation model can be used as a good platform for the research of electric vehicle ABS. References | Related Articles | Metrics

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Research on the Application of Energy-saving Technology for New Energy Vehicles ZHANG Kai, LIU Dandan, SUN Baohai 2024, 49(13): 6-10.  DOI: 10.16638/j.cnki.1671-7988.2024.013.002 Abstract ( )   PDF (471KB) ( )   With the development of social economy and technology, environmental pollution and resource shortage are increasingly serious, especially the mass production and use of automobiles, resulting in the consumption of natural resources and atmospheric environmental pollution.China always adheres to the construction of resource-saving and environment-friendly city, and puts forward a series of suggestions and development concepts on the consumption of automobile resources, among which the development and utilization of automobile new energy technology is an important way to solve the energy exhaustion. Based on the new energy energy-saving technology in the field of automobile, and combined with the existing work experience, this paper studies the application of new energy energy-saving technology, puts forward the existing problems of new energy energy-saving technology at the present stage, and discusses the specific application of some energy energy-saving technology, hoping to promote the innovation of new energy vehicle techno-logy and drive the development of new energy vehicles industry, to further meet the needs of low-carbon life. References | Related Articles | Metrics

Intelligent Connected Vehicle

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Redundant Control of Automatic Driving Trajectory Tracking for Complex Road Scenarios ZENG Ying, TANG Xiaofeng* , LU Xinfeng 2024, 49(13): 11-17,48.  DOI: 10.16638/j.cnki.1671-7988.2024.013.003 Abstract ( )   PDF (1074KB) ( )   In order to improve the precision and robustness of intelligent vehicle track tracking, an adaptive linear quadratic regulator (LQR) control algorithm with preview compensation and a redundant joint control strategy for track tracking are proposed. Firstly, the vehicle two-degreeof-freedom dynamic model and the trajectory tracking error model are established. Secondly, the trajectory tracking controller based on longitudinal proportional-integral-dervivative (PID) control algorithm and horizontal LQR control algorithm is designed. The steady state error is eliminated by feedforward control and preview PID compensation. A weight parameter calculation method based on path tracking error, speed and path curvature is proposed. A redundant control strategy for trajectory tracking is designed based on Stanley algorithm to ensure the safe and efficient running of the vehicle. Finally, a joint simulation with MATLAB/CarSim is carried out to verify the proposed control strategy and ensure its effectiveness and feasibility. The results show that the scheme can effectively improve the accuracy and robustness of the vehicle trajectory, and improve the safety and ride comfort of the vehicle. References | Related Articles | Metrics

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Development of Vehicle Remote Communication Terminal System Based on STM32 DONG Wenqiang1,2 , LIANG Yakun3 , GAO Jianjin4 , CHENG Can2 2024, 49(13): 18-22.  DOI: 10.16638/j.cnki.1671-7988.2024.013.004 Abstract ( )   PDF (2956KB) ( )   In order to solve the low-cost and highly reliable intelligent control problem of " two types of passenger vehicles and one type of dangerous goods vehicle", this paper designs a remote communication terminal system based on STM32. The system uses STM32F105VCT6 as the main control chip, combined with global positioning system (GPS), 4G communication, and controller area network (CAN) bus, to achieve online perception of vehicle status information, instruction interaction, and other functions. It can be dynamically monitored and finely controlled on the vehicle road cloud control platform. Experimental results have shown that this terminal can meet the needs of vehicle communication and information exchange in practical situations, achieving a low-cost and highly reliable "two types of passenger vehicles and one type of dangerous goods vehicle" refined control. References | Related Articles | Metrics

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Research on Distraction Detection Theory of Drivers Based on Deep Learning XIE Xiao1 , ZHANG Hong*1 , JIE Zhideng1 , SUN Minghao1 , YE Juan1 , CHEN Yuxuan2 , ZHANG Haotian3 2024, 49(13): 23-29.  DOI: 10.16638/j.cnki.1671-7988.2024.013.005 Abstract ( )   PDF (2751KB) ( )   The paper proposes a distracted driver detection method based on the improved Yolov8. The article designs a weighted bidirectional feature pyramid network (BiFPN) with a small object detection layer and a novel connection structure on the basis of Yolov8. In the backbone network, an efficient multi-scale attention (EMA) module is introduced to enhance the learning and extraction of key information. A new C2f structure is proposed to integrate dynamic convolution and attention mechanisms into C2f. The improved model achieves a 4.6% increase in accuracy while reducing the parameter volume by 27.1%, thus reducing the model size to a certain extent and improving computational efficiency. Finally, generalization experiments on public datasets show that all evaluation metrics are better than those of the original model. Therefore, the research in the article provides a more efficient and accurate solution for distracted driving behavior detection, offering strong support for road safety and traffic regulation. References | Related Articles | Metrics

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Research on Blind Area Spot Alarm Brake System Based on Forward-looking Camera and Corner Radar GAO Sen 2024, 49(13): 30-33.  DOI: 10.16638/j.cnki.1671-7988.2024.013.006 Abstract ( )   PDF (888KB) ( )   In order to explore a more intelligent and convenient blind area monitoring and reminding brake system, combining the forward-looking camera and ultrasonic with the instrument system to alarm and remind pedestrians and vehicles in the blind area. A blind area spot alarm brake system of corner radar based on the forward-looking camera and ultrasound and circumnavigation is explored, and this scheme can be used as a reference scheme for the functional development and design of subsequent models. The hardware of the scheme can be shared, and only the software part can be changed.The results show that the blind area spot alarm brake system based on forward-looking camera and corner radar can alarm or brake in time, remind the driver to pay attention to the object in the blind area so that avoid traffic accidents. References | Related Articles | Metrics

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Automatic Driving Multi-target Detection Method Based on YOLOv3 XU Dan, MAO Shengfa, CHEN Zhe, LIU Ying 2024, 49(13): 34-37,42.  DOI: 10.16638/j.cnki.1671-7988.2024.013.007 Abstract ( )   PDF (1453KB) ( )   In this research, through in-depth analysis of the principle of YOLOv3 algorithm target detection, the algorithm model is trained using the common pedestrian, vehicle, traffic lights and other data in the road scene of the self collected data set. By changing the model input, filtering meaningless objects, and adjusting the learning strategy, a target detection model with strong real-time performance and high accuracy is obtained by using smaller training sets and fewer training rounds. The experiment shows that the average precision of the improved method in the test set reaches 71.58%, 1.94% higher than the traditional YOLOv3 algorithm, and the detection speed of the algorithm reaches 70.04 f/s, which is better than the traditional YOLO series algorithms. At the same time, the method is applied to the vehicle driving dynamic data set, which can achieve real-time detection of road objects in the video. References | Related Articles | Metrics

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A Testing System and Method for Vehicle-mounted T-BOX Protocol Conformance LI Junlong, AN Di, WANG Xin, LI Zhining, ZHANG Shiju, ZHAO Shiyu 2024, 49(13): 38-42.  DOI: 10.16638/j.cnki.1671-7988.2024.013.008 Abstract ( )   PDF (1178KB) ( )   To improve the accuracy and scene coverage of the telematics BOX (T-BOX) protocol conformance testing in the internet of vehicle, and to reduce the potential safety risks of road extreme condition testing on actual vehicles, this article proposes an automatic testing system and method based on the laboratory virtual simulation environment. By calling custom test scripts through the automatic management and execution unit, simulating navigation satellite positioning signals and various working conditions of on-board bus communication scenarios in real vehicles, constructing multiple typical electromagnetic wave transmission channel models and abnormal faults, real-time analyzing and processing of communication data between on-board T-BOX and virtual cloud platforms, automatically judging test results and generating reports. This method can automatically establish a closed-loop test link under the premise of improving test accuracy, coverage and safety, effectively shortening the product development testing cycle. References | Related Articles | Metrics

Design and Research

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Lightweight Design of Automotive Shock Absorber Structures Based on Inspire Software JI Leifan, MI Yuehua* , WU Mengqi, CHEN Gaohang, SU Yu, SU Guoli 2024, 49(13): 43-47.  DOI: 10.16638/j.cnki.1671-7988.2024.013.009 Abstract ( )   PDF (2084KB) ( )   In the modern automotive industry, the performance of the suspension system is directly related to the smoothness and comfort of driving, and the shock absorber, as its core component, plays a crucial role in reducing vibration and enhancing the ride experience. With the help of Inspire software and topology optimisation technique, the article introduces a feedback mechanism in the optimisation step to realise the dynamic adjustment of the design process, and designs a three-stage solution selection process to ensure the efficient and effective lightweight design of the shock absorber structure, so as to improve the performance and material utilisation of the shock absorber design. The optimal lightweight design under different scenarios is explored through the control variable method, which provides a feasible solution for the innovation and design of automotive shock absorbers. References | Related Articles | Metrics

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Research on Improving the Yaw Stability of Chassis Domain Control Vehicle by Using Feedforward Predictive Control FENG Haoxuan, ZHAO Cuifa, XIA Jinlong, LI Guibin, SI Kaizhong 2024, 49(13): 49-55.  DOI: 10.16638/j.cnki.1671-7988.2024.013.010 Abstract ( )   PDF (3344KB) ( )   In order to further improve the yaw stability control ability of chassis domain control vehicle, a double-layer chassis domain control system is designed and the influence of feedforward predictive control on the yaw stability of chassis domain control vehicle is studied. In this strategy, the predicted yaw velocity calculated by feedforward prediction is calculated with the target value of vehicle yaw velocity and the actual yaw velocity to get the final yaw deviation value. Finally, MATLAB&CarSim co-simulation and real vehicle experiment are carried out through steering wheel step conditions and sine steering conditions. The experimental results show that compared with the simple feedback control, the chassis domain control vehicle with feedforward predictive control can better improve the vehicle response ability and the vehicle yaw stability, especially in the case of continuous steering, the vehicle yaw stability improvement is more obvious. References | Related Articles | Metrics

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Exploration of Topology Optimization Design of Engine Mount Support CAO Yuanbo1 , SHAN Xiaopeng2 2024, 49(13): 56-59,78.  DOI: 10.16638/j.cnki.1671-7988.2024.013.011 Abstract ( )   PDF (4951KB) ( )   Energy saving, emission reduction and green environmental protection have become a hot topic in today's automobile industry, and lightweight design of automobiles can well achieve the purpose of reducing fuel consumption and achieving energy saving, emission reduction and green environmental protection. In order to develop a feasible method to realize the lightweight design of automobile, this paper obtains the material density distribution diagram to guide the design through the topological optimization calculation of the engine mounting bracket of a commercial automobile. According to the material density distribution diagram, the designer designed a reduced weight version of the engine mounting bracket, which not only has a good casting performance, but also meets the requirements of the material density distribution, achieving the purpose of reducing the quality of the part by 24.5%, and improving the strength and stiffness performance by 44% and 22% respectively. This paper studies a method and way to reduce the weight of parts and improve the strength and stiffness performance by integrating computer finite element analysis and topology optimization design, which realizes the feasibility of lightweight design of automobile. References | Related Articles | Metrics

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Dynamic Simulation Study of CVT Gearbox for Four-wheel All-terrain Vehicle SUN Wei 2024, 49(13): 60-64.  DOI: 10.16638/j.cnki.1671-7988.2024.013.012 Abstract ( )   PDF (2979KB) ( )   In order to demonstrate the feasibility of a steel belt continuous variable transmission (CVT) matching four-wheel all-terrain vehicle, this paper establishes a Simulink model of steel belt CVT gearbox matching four-wheel all-terrain vehicle based on MATLAB according to the powertrain structure of the all-terrain vehicle. Using the model, the dynamics of the whole vehicle are simulated, and through the study of its working conditions and the simulation calculation of the maximum vehicle speed, acceleration time, maximum climbing degree and maximum traction, the goals set by the customer are compared with the goals set by the customer, so as to provide a preliminary demonstration basis for the feasibility analysis of the project. The simulation results show that this steel belt CVT can meet the performance goals of customers, and at the same time, it is verified that this model can complete the simulation calculation of fixed working conditions. References | Related Articles | Metrics

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Design and Simulation of Disc Brake Thickness Monitoring Device NI Hong, WANG Tie* 2024, 49(13): 65-68.  DOI: 10.16638/j.cnki.1671-7988.2024.013.013 Abstract ( )   PDF (1093KB) ( )   Through the study of disc brakes, a mechanism based on Hall sensors is designed that can be used to monitor the remaining usable thickness of disc brake friction pads. Firstly, through the analysis and study of the spatial structure of the disc brake, the monitoring device is designed, and the three-dimensional model of the monitoring device and the main parts of the disc brake is drawn by CATIA software. Then, by analyzing the installation and use of Hall sensors, the circuit system is built with Proteus software. Finally, the monitoring principle is analyzed and encoded with Keil, and the file is uploaded to the microcontroller system. Through simulation, it is found that the cooperation between the complete mechanical device and the single-chip microcomputer system can achieve the purpose of real-time monitoring of brake thickness. References | Related Articles | Metrics

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Research on B-pillar Structure Based on Frameless Door Vehicle TONG Lin, SONG Yongle, WANG Ting, LU Tao 2024, 49(13): 69-72.  DOI: 10.16638/j.cnki.1671-7988.2024.013.014 Abstract ( )   PDF (1362KB) ( )   For the design of vehicle body and after-sales, collision safety of vehicle is a very critical factor, with the development of electric vehicle industry, the application of frameless door is more and more in recent years, that undoubtedly poses a greater challenge to the safety of the side impact of the vehicle. The exploration aims at safety and lightweight, the study proposes a structure design of B-pillar for side impact safety of vehicle with frameless doors, to solve the problem of low score of side impact of B-pillar of frameless door models. Through the interpretation of C-IASI evaluation criteria, requirements and characteristics of side impact conditions are summarized, to conclude the key points of side impact B-pillar design. Combined with the actual development case of a frameless door model, develop design solutions that balance lightweight and safety, the design structure can provide reference for the subsequent design of B-pillar structure of other frameless door vehicles. References | Related Articles | Metrics

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The Design of Glove Box in a Flat Space LIU Shisheng 2024, 49(13): 73-78.  DOI: 10.16638/j.cnki.1671-7988.2024.013.015 Abstract ( )   PDF (3104KB) ( )   The passenger-side glove box is an important storage space which can be used to store larger items such as the vehicle operation manual. Taking the design case of the glove box of Xiaomi SU7 as an example, this article introduces the uniqueness of the surrounding environment, analyzes the limitations of the initial design in contributing to storage space, and provides detailed descriptions on how to maximize the storage space of the glove box while using conventional design methods in the case of insufficient space in the Z direction and seeking innovation and differentiated design. This is achieved through techniques such as disassembling the box body and arranging the air duct to the left, aiming for the optimal utilization of space, achieve a capacity of 9.8 L, which can accommodate larger items such as file bags, enhancing the user's experience. At the same time, some useful experiences have been accumulated for the design of glove boxes, which can be explored and referenced. References | Related Articles | Metrics

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Appearance Clearance Design and Movement Simulation for Scissor Door Closure Based on 3DCS SU Yelin, FAN Cheng 2024, 49(13): 79-82.  DOI: 10.16638/j.cnki.1671-7988.2024.013.016 Abstract ( )   PDF (1559KB) ( )   This paper focused on the dimensional development and design of clearance for scissor door and the fender on new car model, digital mock-up (DMU) movement simulation module of CATIA and 3D deviation analysis software 3DCS are used to establish dimension simulation model, simulating motion deviation of scissor door closure and calculating the minimum clearance of the scissor door and the fender in the design-state by DMU dimensional analysis, DMU combining 3DCS static analysis and 3DCS Mechanical analysis. The results show that (4.0±1.0) mm design gap between the scissor door and the fender can not only ensures competitive dimensional design requirements but also avoids the risk of motion interference. In the end, the advantages and disadvantages and scope of application of three analytical methods are described in the paper, and the rationality of the analysis results are verified according to the physical vehicles. References | Related Articles | Metrics

Testing and Experiment

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Influence of Membrane Air Spring with Variable Piston Profile on Stiffness Characteristics YANG Han, YANG Guangfeng, LIU Ninghao 2024, 49(13): 83-89.  DOI: 10.16638/j.cnki.1671-7988.2024.013.017 Abstract ( )   PDF (1238KB) ( )   The rapid development of modern automobile suspension technology requires the vehicle to further improve its performance in handling stability, ride comfort and other aspects. Air springs with adjustable height and stiffness, better vibration absorption capacity and longer service life are used in middle and high-end passenger cars. Piston profile has a great influence on the stiffness characteristics of air spring, and different piston profile directly affects the effective action diameter of air spring. In this paper, four different piston profiles (L type, S type, O type and reverse O type) are designed for passenger car film air spring. Based on the finite element analysis software ABAQUS, the influence of piston profiles on stiffness characteristics of air spring under different initial internal pressures is studied and analyzed. Results show that the O type piston air spring the carrying capacity of the strongest, the O type and type O piston into symmetric structure, the carrying capacity of the weak, with the increase of initial internal pressure, the carrying capacity of the gap is increasingly apparent, S piston type air spring bearing capacity between O and O piston, and shows the ideal anti-S characteristics. References | Related Articles | Metrics

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Analysis of Meshing Characteristics of Hypoid Gears with Extended Epicycloid LIU Guozheng 2024, 49(13): 90-94160.  DOI: 10.16638/j.cnki.1671-7988.2024.013.018 Abstract ( )   PDF (2637KB) ( )   In order to analysis the meshing characteristics of hypoid gears with extended epicycloid, including contact pattern, bending stress, contact ratio and transmission error, the finite element analysis and experiments are carried on. The simulation result is shown that the contact area of the tooth surface at a certain time is approximately oval, which increases first and then decreases on a single tooth surface during the meshing process. For both the pinion and gear, the danger points on the tooth root are mainly subjected to tensile stress. The danger point of the pinion is subjected to tensile stress first, then compressive stress, while the danger point of the gear is opposite. The contact ratio of the gear increases with the increase of load. The transmission error is greatly affected by the load, and the transmission error under small load is large. With the increase of the load, it decreases and then increases, and then gradually decreases stable. The research content of this article has certain guiding significance for the design and use of hypoid gears. References | Related Articles | Metrics

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Development Method of Whole Vehicle Structural Durability Test Specification in Correlation with Customer Usage LU Haibo, ZHONG Zhihong, CHEN Chunyan 2024, 49(13): 95-99,126.  DOI: 10.16638/j.cnki.1671-7988.2024.013.019 Abstract ( )   PDF (1577KB) ( )   The vehicle structure durability test, as one of the key pass-through indicators in vehicle development, is crucial for the development of vehicles. In order to improve the relevance between durability specifications and actual user usage, this article proposes a set of methods for developing vehicle structure durability test specifications that are associated with actual user usage. Firstly, based on user big data, machine learning is used to obtain the real proportion of user road type mileage, user driving styles, and typical operating conditions. Secondly, target percentile user load spectra are obtained through user load spectrum collection, enhanced editing, and extrapolation. Then, proving ground condition loads are collected and screened, and through multi-dimensional correlation technology, the proving ground conditions are matched with the user target loads to compile the vehicle structural durability specifications. Finally, the durability specifications are improved and perfected through trial operation and continuous optimization. References | Related Articles | Metrics

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Analysis of the Acceleration Curve and Injury Value of Pedestrian Protection Head with Plastic Hood GAO Fahua, PENG Chao, ZHAO Kun, WEI Shenghong, LI Wei 2024, 49(13): 100-105.  DOI: 10.16638/j.cnki.1671-7988.2024.013.020 Abstract ( )   PDF (2583KB) ( )   In vehicle collision accidents, pedestrians belong to the vulnerable group, usually suffer great injuries in the accident, among which the head injury is the most serious. In the development trend of new energy vehicles, the frequency of the use of plastic hood is increasing, but there are few studies on the impact of plastic hood on pedestrian head injury protection. Based on the head protection regulations of ECE R127 for pedestrian protection, this paper divides the location areas of the hair cover with different damage values for an existing A00 plastic hair cover. Combined with the test and simulation data, the overall acceleration curve of the hair cover is obtained, and the acceleration curve of the plastic hood is summarized and compared with that of the steel hood. Plastic hood require more energy-absorbing space than steel hair hood. At the same time, the typical acceleration curve of head collision of plastic hair cap is obtained by comparing the acceleration of different areas. By studying the acceleration curve of the head impact of the plastic hood, this paper provides a reference for the subsequent development of the head protection of the plastic hood cover vehicle, which can put forward more accurate layout parameters and modeling requirements for the general layout and modeling in the pre-research stage of the vehicle development, and reduce the repetitive work for the vehicle development. References | Related Articles | Metrics

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Prediction and Analysis of Neck Injury in 3-year-old Children CHEN Jie, GAO Peng, WANG Jiye, MEI Yidan 2024, 49(13): 106-111.  DOI: 10.16638/j.cnki.1671-7988.2024.013.021 Abstract ( )   PDF (2626KB) ( )   In order to solve the lack of neck injury data of children seats designed according to the national standard Restraint System for Children Members of Motor Vehicles (GB 27887－2011), it is difficult to evaluate the neck injury value and formulate evaluation indicators in the subsequent standard. A frontal collision comparison test between P3 dummy and Q3 dummy is carried out in this paper, and a neck force analysis model of a 3-year-old dummy is established to analyze the force situation of the dummy's neck, and the model is improved and verified by the test data of Q3 dummy. This method can be used to predict the neck injury of P3 dummy, supplement the lack of neck injury data of P3 dummy, and provide a scheme for the injury of similar children restraint system. References | Related Articles | Metrics

Process·Materials

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The Meticulous Repair Technology for Automobile Front Windscreen HE Haotao, XUAN Zhaozhen 2024, 49(13): 112-115.  DOI: 10.16638/j.cnki.1671-7988.2024.013.022 Abstract ( )   PDF (2052KB) ( )   The meticulous repair of automobile front windscreen belongs to the value-added service of automobile maintenance. This paper expounds the repair principles for automobile front windscreen, identifies various types of damages that can occur, analyzes the difficulty for repairing these damages, and studies the permissible range for repairing. At the same time, according to the small point or a little seam damage in the front windscreen, the paper studies the repairing operation process of the front windscreen in the pre-treatment stage, the repair stage and the post-treatment stage by using glass damage repair tools, which can achieve double improvement of appearance and strength. The meticulous repair is an advanced glass maintenance method, which use a maintenance method to replace the traditional replacement maintenance. The meticulous repair offers a new solution for the maintenance of automobile front windscreen, which can reduce maintenance costs and reduce environmental pollution. The meticulous repair technology provides scientific guidance when body repair technicians repaired automobile front windscreen. References | Related Articles | Metrics

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Optimization of Assembly and Welding Line Balance Based on Industrial Engineering Methods GAO Jianwei, LI Yangbo, MA Jiang 2024, 49(13): 116-120.  DOI: 10.16638/j.cnki.1671-7988.2024.013.023 Abstract ( )   PDF (1856KB) ( )   The production line balance rate is one of the important indicators to measure the efficiency of the assembly line. Each assembly line has the problem of imbalance, which to some extent affects the competitiveness and profitability of the enterprise. This article analyzes the production and assembly process of heavy-duty trucks, with a focus on using the basic methods of industrial engineering to determine the time for on-site operations. By combining the width ratio and evaluation coefficient, standard time for each process is formulated and calculated. The bottleneck process of the assembly and welding line is identified using the line balance method, and effective improvement measures are proposed. By balancing the workload of each process, waste is eliminated, and the line balance rate is improved, improved the efficiency of production line operations. References | Related Articles | Metrics

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Improvement Method of Fixing the Pressing Edge for Inner and Quter Panel of the Door and Cover of Automobile Body in White LI Jiming, CHENG Hongtao, LIU Yu, DOU Chengdong, SONG Chen, PENG Yong 2024, 49(13): 121-126.  DOI: 10.16638/j.cnki.1671-7988.2024.013.024 Abstract ( )   PDF (1630KB) ( )   In this paper, the purpose, common method of pressing edge fixing for inner and outer panel of door and cover of body in white in automobile manufacturing process and the surface quality defect and bonding strength problem are studied briefly. In order to solve these problems completely, a new method is explored in this paper. Without contacting part surface, the pressing edge of inner and outer panel can be fixed with a good bonding strength, namely a fixing technology of cold metal transfer (CMT) in the form of spot welding for pressing edge of inner and outer panel of door and cover. It is analyzed and demonstrated from equipment principle and process characteristics. After equipment installation, process commissioning and quality verification etc., this improvement is put into use in models of series production and the product quality stability is verified in practical production. The production efficiency has also improved significantly and the maintenance cost has reduced effectively. This improvement has a high promotion value in the automobile manufacturing industry. References | Related Articles | Metrics

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Efficiency Improvement and Practice of the Final Assembly Line under the Mixed Production Mode of Multiple Vehicle Models KE Xianzhi, WEI Yuan 2024, 49(13): 127-130.  DOI: 10.16638/j.cnki.1671-7988.2024.013.025 Abstract ( )   PDF (1296KB) ( )   In view of the insufficient load of assembly personnel in the multi-model mixed-line production mode of the final assembly line of heavy commercial vehicles, this paper describes a production scheduling method based on structured process, which can calculate the best production models of each production line and the corresponding personnel input according to the annual model planning of the enterprise, and adjust the model mix ratio according to the best efficiency interval of each production line during the order scheduling, to maximize the efficiency of assembly personnel in each production line. Through practice, this method can effectively reduce the number of assembly personnel and improve production efficiency, and can be widely used in manufacturing enterprises to improve the efficiency of multi-variety mixed-line production lines and reduce production costs. References | Related Articles | Metrics

Automobile Education

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Exploration of Integrating Ideological and Political Elements into Mechanical Design Course Teaching under the OBE Concept ZHANG Qiliang, YUAN Qiuhong, ZOU Lei, ZHANG Shuixiang 2024, 49(13): 131-135.  DOI: 10.16638/j.cnki.1671-7988.2024.013.026 Abstract ( )   PDF (1222KB) ( )   Mechanical Design course is the core course of mechanical major. Under the wave of the engineering course. era of Industry 4.0, the reform of engineering education returns to practical education with educational results as the goal. The ideological and political construction of Mechanical Design course based on the outcome based education (OBE) concept is an important starting point for cultivating outstanding talents in the new era. Taking Mechanical Design as a specific research course, starting from the reform practice of ideological and political teaching in the course, this paper deeply analyzes the current ideological and political problems in the course of Mechanical Design, deeply explores ideological and political elements in combination with the characteristics of the course of Mechanical Design, explores the smooth and silent ideological and political teaching design of the course of Mechanical Design, and inspires students' feelings of home and country and their mission, and provides a good idea and direction for ideological and political education of References | Related Articles | Metrics

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Exploration and Practice of Curriculum Ideological and Political Education Based on System Engineering V-Model －Taking the Course Introduction to Intelligent Connected Vehicle Technology as an Example Ailixiati Abulizi, ZHANG Jiahui, LI Jianxin, XUE Xihong 2024, 49(13): 136-141.  DOI: 10.16638/j.cnki.1671-7988.2024.013.027 Abstract ( )   PDF (1412KB) ( )   In order to train high-quality technical talents of intelligent networked automobile specialty, taking the course Introduction to Intelligent Networked Automobile Technology as an example, this paper analyzes the problems existing in the ideological and political construction of the course of technology of intelligent connected vehicle in higher vocational colleges, and takes "promoting professional ability and molding values" as the guidance, based on the systems engineering V-model, an integrated teaching system of ideological and political education, which combines the analysis and design, the establishment of evaluation system and the verification of objectives is constructed and the ideological and political elements of the curriculum mining and integration path for a detailed explanation. To explore the implementation of the ideological and political education system of this course in higher vocational colleges, and in the teaching practice process according to "student evaluation of teaching, effect evaluation, comprehensive evaluation" three dimensions of the evaluation results of the dynamic adjustment of ideological and political design curriculum, in order to solve the problem that the effect of ideological and political education is not outstanding, and provide reference for the construction of ideological and political education in higher vocational colleges. References | Related Articles | Metrics

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Research on Teaching Reform Path of Automobile Maintenance Specialty under the Background of Integration of Production and Education ZHU Kaijia1 , LI Huateng2 2024, 49(13): 142-147.  DOI: 10.16638/j.cnki.1671-7988.2024.013.028 Abstract ( )   PDF (1214KB) ( )   Under the background of the integration of industry and education, teaching reform is a automobile maintenance industry. hot issue in the field of higher education. By analyzing the current situation that the traditional practical teaching mode has been unable to meet the market demand and industry requirements, taking the major of automobile maintenance as the research object, through the combination of literature investigation research and data analysis, the path and strategy of teaching reform of the specialty of automobile maintenance under the background of integration of production and education are deeply discussed. It emphasizes the necessity of practical teaching reform, puts forward a series of teaching reform paths, and points out that the teaching reform of automobile maintenance specialty needs to be deepened continuously, strengthens cooperation with the industry, and constantly optimizes the teaching content and teaching methods to meet the development needs of the References | Related Articles | Metrics

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Innovation and Research on Teaching Models in the Automotive Major under the Digitalization Effect ZHANG Lifeng, JIA Jia 2024, 49(13): 148-151.  DOI: 10.16638/j.cnki.1671-7988.2024.013.029 Abstract ( )   PDF (956KB) ( )   The emergence of the digital economy has sparked an unprecedented wave of transformation across global industries, and the automotive sector, serving as a foundational pillar in manufacturing, is no exception. As an important base for the training of automotive professionals in the new era, how to improve the quality of professional teaching and train automotive talents with the ability to solve complex problems and adapt to the changing situation in the new era is become an urgent problem to be solved. This paper aims to explore the current teaching models and reform approaches in Chinese higher vocational institutions offering automotive programs. The goal is to achieve a close alignment between educational institutions and industry demands, thereby better preparing students to confront the challenges brought by the digital economy era. References | Related Articles | Metrics

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Research and Implementation of Ideological and Political Curriculum of New Energy Vehicle Network Control Technology WANG Lufeng 2024, 49(13): 152-155.  DOI: 10.16638/j.cnki.1671-7988.2024.013.030 Abstract ( )   PDF (1104KB) ( )   : In order to promote the curriculum and ideological and political cooperation forward, and to realize the whole process of educating people through the close integration of value shaping, knowledge imparting and ability cultivation, relying on informatization teaching, through the analysis of the teaching task of new energy vehicle network control technology, this paper discusses the teaching implementation process of ideological and political curriculum under the informatization teaching mode. Through the establishment of the objectives of the course based on the ideological and political curriculum, the implementation of "independent learning before class, interactive learning in the classroom, and communication and learning after class" teaching activities, and the implementation of the "online, offline, and final examination" trinity teaching evaluation process, the ideological and political curriculum is integrated into the whole teaching process of the New Energy Vehicle Network Control Technology course.This paper can enhance the effectiveness of course parenting, and provide reference for the construction of ideological and political curriculum for various majors in higher vocational education. References | Related Articles | Metrics

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Research on the Cultivation of New Energy Vehicle Field Engineer Talents DENG Rukui, LIANG Hua, RU Yihong 2024, 49(13): 156-160.  DOI: 10.16638/j.cnki.1671-7988.2024.013.031 Abstract ( )   PDF (1164KB) ( )   In view of the rapid growth of the demand for field engineers in Guangxi's new energy automobile industry, combined with the current problems in the construction and development of new energy automobile professional, such as the lack of school-enterprise cooperation, weak teachers, and the mismatch between the curriculum system and the job demand of new energy automobile industry, this paper discusses the train of ideas for the training of new energy automobile technical professionals from the perspective of field engineers. It is proposed that the school and enterprise cooperate to educate people, restructure the curriculum system based on the skill requirements of first-line positions in the new energy automobile industry, introduce first-line technical personnel of enterprises, and build a school-enterprise mixed teaching team. The research is driven by the new energy automobile industry to cultivate field engineers in the new energy automobile manufacturing industry, and provides a new construction idea for the training of new energy automobile technical professionals. References | Related Articles | Metrics

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Exploration of the Curriculum Ideology and Politics of Communication and Interaction at the Maintenance Station ZHOU Yanyan1 , LI Jianxin1 , SONG Fuming2 , Ailixiati Abulizi1 , ZHANG Jiahui1 2024, 49(13): 161-164.  DOI: 10.16638/j.cnki.1671-7988.2024.013.032 Abstract ( )   PDF (1401KB) ( )   This paper analyzes the curriculum ideological and political education of the Communication and Interaction at the Maintenance Station, aiming at improving the professional skills and cultivating personal qualities of students in higher vocational colleges. Through infiltrating the students' knowledge of originality, service consciousness and dedication in the process of teaching professional curriculum, students can better practice the work style of high quality and strong skills in practical work. The result shows that the students' operational ability and personal quality are obviously improved after the curriculum ideology and politics are integrated into the Communication and Interaction at the Maintenance Station. References | Related Articles | Metrics

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Exploration on the Integration of "New Development Concept" in the Curriculum Ideological and Political Construction of Automobile Theory ZHANG Kun, WEI Daili, LIU Yuzhen, MENG Fanzhao 2024, 49(13): 165-168.  DOI: 10.16638/j.cnki.1671-7988.2024.013.033 Abstract ( )   PDF (989KB) ( )   Curriculum ideology and political is an important way to achieve professional ideological and political education, is in line with the national background of the new era of the basic requirements of talent training education concept, under the new educational concept to carry out the curriculum ideological and political construction of Automobile Theory, is the inevitable requirement of training high-quality applied automotive engineering and technical personnel. On the basis of indepth study of ideological and political elements in the curriculum content, the new development concept of "innovation, coordination, green, open and sharing" is explored as the main line of curriculum ideological and political construction, and the way is integrated into the classroom teaching process of Automobile Theory, which lays the foundation for training automotive engineering and technical talents to meet the development requirements of the new era. References | Related Articles | Metrics

Standards·Regulations·Management

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Design of Unstructured Knowledge Management System for Vehicle Professional Field ZHOU Peng 2024, 49(13): 169-175.  DOI: 10.16638/j.cnki.1671-7988.2024.013.034 Abstract ( )   PDF (2655KB) ( )   Knowledge management, as a key link in creating value for enterprises, is of great significance in improving business efficiency. Especially in the process of vehicle development, the accumulation of unstructured data is particularly abundant, how to effectively manage and utilize this data has become the focus of attention for enterprises. Therefore, from the perspective of promoting business digitization and data commercialization, it is proposed to build an unstructured knowledge management system specifically for the field of vehicle expertise. This system is based on a maturity model of unstructured data management capabilities, which carefully defines preliminary requirements and overall planning, divides knowledge classification based on professional sub domains. At the same time, advanced technologies such as the Share Point platform, Elastic Search engine, Office Online functional components are utilized to ensure that the knowledge management system not only has efficient business relevance, but also has functional ease of use and user-friendly interface. The establishment of this system will comprehensively improve the efficiency of business operations and create greater value for the enterprise. References | Related Articles | Metrics

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Cause Analysis and Improvement Measures of Steering Column Issues in a Vehicle During Mass Production Stage HE Yi, CHEN Hongqing, ZHOU Zhihong, WU Kebin 2024, 49(13): 176-179.  DOI: 10.16638/j.cnki.1671-7988.2024.013.035 Abstract ( )   PDF (2020KB) ( )   During the mass production stage of vehicle model, the imported steering column component experienced faults such as lack of power steering, abnormal steering noise, and jamming. The three issues have a relatively high priority level. Lack of assistance in steering involves driving safety, and the abnormal noise and jamming during steering affect the driver's experience, all of which need to be improved. This article analyzes the causes of steering column problems and formulates improvement measures through the use of A-B-A exchange method, 5Why factor analysis, and control experiments in quality improvement methods. This case provides a reference for automotive original equipment manufacturers and automotive component suppliers, and provides a solution for similar issues. References | Related Articles | Metrics