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10 October 2024, Volume 49 Issue 19 Previous Issue   
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New Energy Vehicle
Intelligent Connected Vehicle
Design and Research
Process·Materials
Automobile Education
Standards·Regulations·Management


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New Energy Vehicle

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Study on Failure of 5083 Aluminum Alloy for Battery Pack XIN Zihan, YANG Guoliang, HU Jimin* , ZHENG Chongsong, LIU Jiawen, LI Luyao 2024, 49(19): 1-7.  DOI: 10.16638/j.cnki.1671-7988.2024.019.001 Abstract ( )   PDF (1453KB) ( )   With the increasingly stringent automotive safety regulations, and the deepening trend of lightweight new energy vehicles, battery pack safety is becoming the core of new energy vehicle safety. In this paper, 5083 aluminum alloy, which is mainly used in the battery pack side guard plate, is taken as the research object. A test matrix is designed to obtain the material mechanical properties at different tensile strain rates and a variety of stress states, including static notch tensile, central hole tensile, shear and tensile shear. Through the self-developed software, the strain hardening curve and the parameters of molified Mohr-Coulomb (MMC) damage model are established and calibrated. And the reasonable of the MMC damage model is verified by three-point bending test and dynamic punching test. The results show that the failure model obtained in this study can better predict the fracture failure behavior of 5083 aluminum alloy, which provides a powerful material data basis for the safety performance analysis of new energy vehicle battery packs. References | Related Articles | Metrics

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Analysis of Power Battery Recycling and Reuse Industry Development Issues and Response Strategies WU Wenchang 2024, 49(19): 8-12,45.  DOI: 10.16638/j.cnki.1671-7988.2024.019.002 Abstract ( )   PDF (516KB) ( )   With the rapid development of the new energy vehicle industry, the wave of power battery decommissioning has followed. In order to achieve the sustainable development of the new energy vehicle industry and the "dual-carbon" goal, this paper discusses in depth the many challenges encountered in the development process of power battery recycling and reuse industry. Based on the successful experience of foreign countries, this paper puts forward a number of feasible suggestions. Firstly, improve battery recycling regulations and strengthen industry supervision; secondly, establish a national standard system for power battery production; in addition, establish an industrial alliance through the integration of resources to promote the synergistic development of the upstream and downstream of the industrial chain; and lastly, make use of incentives, such as fiscal and tax policies, to promote enterprises to actively establish a battery recycling network. References | Related Articles | Metrics

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Common Problems and Countermeasures of Hydrogen Fuel Cell Vehicles in Low Temperature Environment YI Yafei, WANG Nan, DING Xinjian, YANG Fengyi, ZHANG Yu 2024, 49(19): 13-16,39.  DOI: 10.16638/j.cnki.1671-7988.2024.019.003 Abstract ( )   PDF (722KB) ( )   As a potential clean energy vehicle, hydrogen fuel cell vehicles (FCVs) have attracted much attention for their environment-friendly and high energy-efficient characteristics. However, their operation in low temperature environments faces significant problems and challenges, which not only affect vehicle performance, but also may limit their application in cold regions. This paper aims to discuss the main problems and challenges faced by FCVs in low temperature environment. Through the analysis of the working principle of hydrogen fuel cells and the study of the influence of low temperature on material properties, a series of problems such as start-up difficulties, reduced hydrogen storage safety, and reduced engine life are revealed. The possible solutions are proposed from the aspects of materials, fuel cell technology, vehicle and operation. References | Related Articles | Metrics

Intelligent Connected Vehicle

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Obstacle Trajectory Prediction Method HAN Xiaohui, YAN Libo, CHEN Caixia 2024, 49(19): 17-21.  DOI: 10.16638/j.cnki.1671-7988.2024.019.004 Abstract ( )   PDF (2024KB) ( )   In order to improve the ability of obstacle detouring in intelligent driving field, a kind of real-time method is proposed to predict the trajectory of obstacles. The method integrates vision sensors and a lidar sensor to observe the historical motion trajectory of the obstacle to give out the pose and speed of the obstacle with time stamp, which mean that the obstacle is described from three dimensions: time, space and speed. Based on historical observation data, simple recurrent neural network with maximum likelihood estimation can predict the trajectory of obstacles in real time. References | Related Articles | Metrics

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The Stanley Control Algorithm Based on Preview Time ZHAO Qi, XU Chang, JI Chenyu, YANG Feng, LIU Dong, LIU Liang 2024, 49(19): 22-28.  DOI: 10.16638/j.cnki.1671-7988.2024.019.005 Abstract ( )   PDF (3229KB) ( )   The Stanley algorithm, which utilizes the front wheel center as the error reference point, Stanley-real vehicle" in hardware simulation and real vehicle test results, the overall error of the "preview-Stanley" algorithm is smaller than that of the Stanley algorithm; On the other hand, by comparing the lateral errors of "preview-Stanley-simulation" and "preview-Stanley-real vehicle", the accuracy and fidelity of the created hardware-in-the-loop system are verified. lacks the human-like forward-looking driving characteristic, resulting in frequent directional corrections. Furthermore, the current autonomous driving simulation methodologies and platforms are limited in their fidelity, making it difficult to effectively validate the practical impact of algorithm improvements. In this paper, a "preview-Stanley" control algorithm combining the optimal preview theory and Stanley control algorithm is proposed. Firstly, a virtual integrated navigation module and a vehicle controller area network (CAN) communication module are created based on Carla simulation platform. Then, the simulation platform of the autopilot domain controller-in-the-loop is built, and the "preview-Stanley" algorithm is deployed in the autopilot domain controller and testedin-the-loop. Finally, the real vehicle test under the real physical scene is verified. The results show that, on the one hand, by comparing the lateral errors of "Stanley-real vehicle" and "preview- References | Related Articles | Metrics

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Analysis of an Off-road Vehicle EPS Bench Impact Resistance LUO Jun, YU Jinxia, HAN Rui, ZHOU Changhui 2024, 49(19): 29-33.  DOI: 10.16638/j.cnki.1671-7988.2024.019.006 Abstract ( )   PDF (5204KB) ( )   Electric power steering (EPS) system in off-road vehicle are more vulnerable to bumps from the uneven ground impact, therefore, the vehicle requires EPS electronic control unit (ECU) in the design process to consider can withstand a large impact without damage, how to quickly verify the impact of the ECU design effectiveness has become a problem in the industry. In this paper, a set of effective off-road working condition verification scheme is developed from the perspective of reverse design under the off-road durability verification conditions of vehicles. By collecting and processing road spectrum data and entering it into the vibration bench, the impact resistance of EPS is quickly verified, which can be used to quickly identify potential ECU impact failure risk points. The research results show that the method has clear theoretical significance, engineering application value of improving validation effectiveness, saving test time, shortening product development cycle, and laying a foundation for subsequent simulation tests. References | Related Articles | Metrics

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Application Research of 5G Communication Technology in Vehicle Networking YANG Yuhao 2024, 49(19): 34-39.  DOI: 10.16638/j.cnki.1671-7988.2024.019.007 Abstract ( )   PDF (873KB) ( )   With the continuous development of Internet of things technology, the vehicle networking, as an important branch of it, is gradually changing people's travel patterns and quality of life. Firstly, this paper focuses on the application of 5G in the vehicle networking, analyzes the foundation of 5G communication technology, including 5G technical characteristics, technical standards, spectrum analysis, 5G network architecture and deployment strategy. Then, the basis of 5G vehicle networking technology and its application scenarios in intelligent traffic management, automatic driving and other fields are discussed. Finally, the performance improvement and business innovation brought by it are analyzed. Through in-depth research on the application of 5G communication technology in the vehicle networking, it is expected to promote the intelligent development of the transportation industry, improve traffic efficiency and safety, and provide important support for the construction of smart cities. References | Related Articles | Metrics

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Intelligent Connected Vehicle In-vehicle Service Ecology Framework Planning and Development Proposals NI Baochener1 , XU Jianhan2 , CHEN Jinwen1 , HE Qiuyao1 , LIN Yuxin1 2024, 49(19): 40-45.  DOI: 10.16638/j.cnki.1671-7988.2024.019.008 Abstract ( )   PDF (813KB) ( )   A good intelligent connected vehicle vehicle service ecosystem can not only promote the healthy development of the intelligent connected vehicle vehicle service market, but also provide more development momentum and cash opportunities for the vehicle service research and development industry, and ultimately provide the market with better quality vehicle service products. Based on the current situation of the continuous development of intelligent connected vehicle vehicle services, this paper analyzes its market foundation and development problems in detail, and proposes solutions for building an intelligent connected vehicle services business ecosystem. It includes establishing the business ecological concept of vehicle service, adopting K-means++ clustering algorithm and convolutional neural network (CNN) portrait as its main application technology, maintaining market order, and building business models. References | Related Articles | Metrics

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Research Progress on Front Vehicle Recognition Method Based on Lidar YU Yatao, CHEN Xuewen 2024, 49(19): 46-49.  DOI: 10.16638/j.cnki.1671-7988.2024.019.009 Abstract ( )   PDF (730KB) ( )   Environment perception technology is one of the key research objects in the field of driverless. When the scene is collected based on camera, the image lacks depth information and spatial structure information. Firstly, the types of lidar sensors used for front vehicle recognition and the method of front vehicle recognition based on lidar sensors are deeply studied in this paper; secondly, it analyzes their advantages and disadvantages, searches and reads a lot of literature, and summarizes the mainstream research methods at home and abroad; finally, the development trend of solid-state laser radar used in the research of front vehicle recognition methods is described, the methods and problems encountered for front vehicle recognition are sorted out, and corresponding suggestions are given. The research results provide a reference for further research on the front vehicle recognition method based on lidar in China. References | Related Articles | Metrics

Design and Research

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The Design Optimization of the Composite Front Suspension Leaf Spring for Commercial Vehicles ZHOU Wen1 ,YU Dong1 , YIN Zhongbao1 , LI Jun1 , XIAO Fei*1 , WANG Jiahan2 2024, 49(19): 50-53.  DOI: 10.16638/j.cnki.1671-7988.2024.019.010 Abstract ( )   PDF (1306KB) ( )   To address the issue of fractures occurring during the reliability verification process of the composite front suspension leaf spring, this article proposes optimizations to the original design from four perspectives: firstly, enhances the material's ultimate stress by adopting the LQSP1300 material, which elevates the yield strength from 1 100 MPa to 1 300 MPa. Secondly, optimizes the local structure by extending the rear section of the second leaf by 20 mm, alleviating stress concentration when the first leaf is in operation. Thirdly, refines the arc height of the leaf spring, ensuring that under the calibrated height, the leaf spring reverses its load-bearing direction, resulting in a trend of first decreasing and then increasing working stress during the upward jump, thus improving fatigue life. Lastly, optimizes the shot peening process of the leaf spring by applying shot peening to both the upper and lower surfaces, creating a residual stress layer that offsets a portion of the stress during the upward and downward deformation of the leaf spring, further enhancing its fatigue life. Through these four optimizations, the new design has improved its bench fatigue test cycles by 45.4% and successfully passed a 12 000 km road reliability test. References | Related Articles | Metrics

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Application of NSGA2 Algorithm in Structural Parameter Optimization of Cross Wave Plate QI Chenxi1,2 , LI Qiang2 2024, 49(19): 54-60，76.  DOI: 10.16638/j.cnki.1671-7988.2024.019.011 Abstract ( )   PDF (4920KB) ( )   The mass and size of the water tank of a small fire truck are relatively large compared to the entire vehicle, resulting in a significant impact on the vehicle's handling and stability due to the shaking of the medium in the water tank during driving. To investigate the influence of the structural parameters of the cross wave plate inside the fire water tank on the handling stability of the vehicle. Firstly, using the method of orthogonal experiment, the influence of structural parameters of the cross wave plate on the load transfer and shaking force of the water tank during liquid shaking is analyzed using finite element method; then a multi-objective surrogate model is established between the structural parameters of the cross wave plate and the load transfer amount and shaking force of the water tank. Based on NSGA2 genetic algorithm and COWA operator to determine a set of optimal solutions; finally, the effectiveness of the vehicle dynamics model is verified, and the impact of different schemes on vehicle handling and stability is compared through simulation. The results show that the optimized cross wave deflector design scheme reduced the load transfer and shaking force of the water tank by 29.17% and 10.90%, respectively. Compared with the scheme without wave deflectors and the initial wave deflector scheme, the roll angle score increased by 19.12% and 10.09%, and the yaw rate score increased by 5.69% and 1.65%, respectively, under the double line shifting condition. This study provides a theoretical reference for the optimization design of the water tank cross wave plate of small fire trucks. References | Related Articles | Metrics

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Simulation Analysis and Optimization of Semi-Active Air Suspension XU Feng, RONG Bing* 2024, 49(19): 61-67.  DOI: 10.16638/j.cnki.1671-7988.2024.019.012 Abstract ( )   PDF (1797KB) ( )   In order to study the outstanding advantages of air spring in semi-active suspension, as well as the optimization strategy of air spring, this paper based on the vehicle dynamics model of a mature vehicle, firstly, establishes the damper control algorithm of skyhook damping control strategy, then establishes the corresponding air spring model. Secondly, according to the characteristics of the air spring, the reference stiffness of the air spring under different load conditions is designed, and comprehensively considered the suspension isolation performance and suspension impact performance to optimize the stiffness of air spring. Finally, the effectiveness of the optimization scheme is verified through simulation comparison with the basic passive suspension model. The result shows that under half load and full load conditions, the suspension isolation performance is improved by about 19.78% and 28.92% on cobblestone roads, and by about 15.12% and 21.52% on Belgian roads, the suspension impact performance is improved by about 54.55% and 60%. This research method is closely related to the engineering development and application of air springs, and can effectively reduce the development cycle and cost of air springs. References | Related Articles | Metrics

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Simulation Analysis of Hydraulic Inerter CHEN Xin 2024, 49(19): 68-71.  DOI: 10.16638/j.cnki.1671-7988.2024.019.013 Abstract ( )   PDF (1300KB) ( )   Hydraulic inerter has excellent performance and high reliability, and can be well applied to automotive suspension systems. This article focuses on the nonlinear characteristics of hydraulic inerter, the simulation model is established by AMESim. Through simulation, it is found that at low frequencies, the frictional and damping forces of hydraulic inerter play a major role, while the inertial forces of inerter play a secondary role. But as the frequency increases, the effects of damping force and inertia force become more and more significant, while the influence of friction force becomes less and less significant. While the frequency is high, the influence of friction on the performance of hydraulic inerter can be ignored. Mechanical performance tests are conducted on a inerter test bench, and the correctness of the simulation model is verified through experiments, which is providing reference for further research on hydraulic inerter. References | Related Articles | Metrics

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Numerical Simulation of Urea-SCR After-Treatment System for Diesel Vehicle LI Chiyu 1 , SUN Qiang1 , ZHU Yixi*1 , WANG Zhichun2 2024, 49(19): 72-76.  DOI: 10.16638/j.cnki.1671-7988.2024.019.014 Abstract ( )   PDF (1246KB) ( )   To improve the performance of urea-selective catalytic reduction (SCR) system of diesel vehicles, this paper adopts computational fluid dynamics (CFD) method to simulate the exhaust after-treatment system of a certain diesel vehicle. The internal flow of the Urea-SCR system and the uniformity of NH3 distribution and velocity on the front entrance plane of the carrier are studied under different exhaust temperature conditions. The results show that with the increase of exhaust temperature, the NH3 uniformity in front plane of SCR carrier is obviously improved, and the velocity uniformity is also slightly increased. In addition, according to the calculated results in this paper, the higher the exhaust temperature, the faster the evaporation and pyrolysis rate of urea solution injected into the Urea-SCR system, and the urea into the catalytic converter is significantly reduced. The numerical simulation results in this paper can provide ideas for the improvement and optimization of Urea-SCR after-treatment system of this diesel engine. References | Related Articles | Metrics

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Development and Research of Rear Windshield Airbag Subsystem of a Certain Vehicle DING Wenquan,WEI Xiaofei, TENG Yongquan 2024, 49(19): 77-80.  DOI: 10.16638/j.cnki.1671-7988.2024.019.015 Abstract ( )   PDF (1997KB) ( )   More and more attention has been paid to the safety of automobiles, and regulations and various automobile safety evaluation institutions have also put forward higher and higher requirements for vehicle safety. For occupant protection, the current general evaluation indicators in the industry focus on measuring the first and second row passenger protection. In order to highlight the all-round occupant protection, some automobile companies have developed rear window airbags for the three-row occupants unique to the 6-seat and 7-seat models. Based on the development of the rear windshield airbag subsystem of a certain vehicle, this paper formulates the evaluation benchmark of the subsystem, sorts out the problems in the rear windshield airbag layout, matching with interior trim (hatchback door trim panel, ceiling, seat), and the airbag point explosion process, as well as the solutions, so as to provide certain references for the subsequent large-scale development and application of the rear windshield air curtain. References | Related Articles | Metrics

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Designing Optimization of Transmission Shell Strength for a Light Commercial Vehicle DU Tianyi1 , TONG Qiming2 , LEI Jiangquan1 , YUAN Jianjian1 2024, 49(19): 81-84,93.  DOI: 10.16638/j.cnki.1671-7988.2024.019.016 Abstract ( )   PDF (4023KB) ( )   A light commercial vehicle experienced a cracking fault at the suspension installation position on the transmission shell during the durability test of the vehicle structure. Through the analysis and research of fracture, metallography, chemical composition and design check, it is determined that the root cause of shell fracture is insufficient safety factor of shell strength design, which may lead to shell cracking under extreme working conditions. The load boundary of the finite element analysis (FEA) model of shell strength is updated by measuring the load spectrum of mounting point. The optimized FEA analysis results show that the stress state of the suspension installation position is improved significantly, and meet the latest stress acceptance standards, and the transmission passes smoothly the vehicle structure durability test. References | Related Articles | Metrics

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Study on Six-phase Electric-drive-reconstructed On-board PV Grid-connected Inverter SHEN Yanchi, XU Yong, QIU Yi 2024, 49(19): 85-88，100.  DOI: 10.16638/j.cnki.1671-7988.2024.019.017 Abstract ( )   PDF (2035KB) ( )   In recent years, solar electric vehicle, with their extended driving range, have garnered widespread attention. To further expand the application of onboard photovoltaic panels in solar electric vehicles and reduce the operational costs associated with their usage, a six-phase electricdrive reconstructed onboard photovoltaic grid-connected inverter is proposed. This inverter facilitates the transmission of energy harvested by the onboard photovoltaic panels into the grid without requiring additional power electronic devices. The paper analyzes the conditions necessary for zero electromagnetic torque in the asymmetric six-phase permanent magnet synchronous motor (ASPMSM). By reusing components such as the inverter, motor stator windings, and current sensors from the electric vehicle's propulsion system, a circuit topology and control strategy for a zero electromagnetic torque six-phase electric-drive reconstructed onboard photovoltaic grid-connected inverter are proposed. Additionally, experimental studies conducted on a 660 W prototype platform are presented, which hold significant implications for enhancing the driving range of electric vehicles and reducing operational costs. References | Related Articles | Metrics

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Simulation Analysis and Optimization Design of Automotive Fuel Tank Structure LI Huihui1 , SANG Yuechang2 , DONG Hao3 2024, 49(19): 89-93.  DOI: 10.16638/j.cnki.1671-7988.2024.019.018 Abstract ( )   PDF (2165KB) ( )   As an important component of automobile, the fuel tank bears various vibration loads and impacts from road bumps during daily driving, which not only affects the static and dynamic characteristics of the fuel tank, but also relates to the driving safety of the automobile. The three-dimensional modeling and finite element static simulation analysis of a certain automobile fuel tank, the vibration characteristics of its structure are simulated and analyzed. Based on this, the optimization design of the fuel tank structure is carried out. Through the reasonable design of its fuel baffle, the anti vibration characteristics of the fuel tank are effectively improved, the impact of fuel on the fuel tank is reduced, and the safety of the fuel tank is effectively improved. References | Related Articles | Metrics

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Design of Steering Controller Based on Adaptive High-order Sliding Mode YANG Shujiao1 , DUAN Min1 , CAO Jingsheng2 2024, 49(19): 94-100.  DOI: 10.16638/j.cnki.1671-7988.2024.019.019 Abstract ( )   PDF (1629KB) ( )   Aiming at the problems of handling stability and lack of roll stability under vehicle steering, the study of nonlinear sliding mode control of front-wheel active steering has certain guiding significance for the study of vehicle driving stability. Adaptive higher-order sliding mode control method combined with Takagi-Sugeno (T-S) fuzzy modeling method is used to construct model parameter observer to obtain tire dynamic parameters in real time, considering the nonlinear change of tire side deflection angle. Through the joint simulation of CarSim and MATLAB/Simulink, two typical working conditions of double-shift line and sinusoidal stagnation are selected to simulate and validate the adaptive higher-order sliding mode control method for the performance indexes of center-of-mass lateral deflection, horizontal pendulum angular velocity, lateral acceleration, etc. The results show that this method can improve the dynamic response performance of steerable by wire system to angle; compared with the traditional sliding mode control strategy, the maximum yaw speed and lateral acceleration are reduced by 22.63% and 5.4%, respectively, which can improve the handling stability of the vehicle. References | Related Articles | Metrics

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Optimization Design of Commercial Vehicle Cooling Module Based on Two-stage Lightweight JIAO Yufei1 , CHEN Tongtong2 2024, 49(19): 101-107.  DOI: 10.16638/j.cnki.1671-7988.2024.019.020 Abstract ( )   PDF (2896KB) ( )   In order to solve the problems of difficult assembly, high cost, multiple types of lower level components, and a large weight proportion of frame accessories in the cooling module of new energy vehicles, and to achieve the goal of lightweight design for automobiles, a multi-objective phased optimization method is used to design an integrated lightweight cooling module for a new energy vehicle cooling module in a certain company. By combining road tests and simulation analysis calculations, structural optimization, material optimization, and functional integration are carried out on the radiator accessories, reducing the assembly process while reducing the weight of the cooling module. After verification, the integrated lightweight cooling module of the target structure meets the requirements of vehicle use, and this design method has profound significance for achieving low-cost lightweight design of automobiles. References | Related Articles | Metrics

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Application of Virtual FMB Matching Technology in Body-inWhite Manufacturing LIU Feng, LIANG Yijie, XI Zhongxuan, HANG Fengliang, LI Zhishen 2024, 49(19): 108-111126.  DOI: 10.16638/j.cnki.1671-7988.2024.019.021 Abstract ( )   PDF (2742KB) ( )   This study aims to propose a virtual space-based evaluation method for body in white skeleton size. This method obtains data from optical scanner and then splice in virtual space (PolyWorks), and uses the same evaluation method as physical fügen-meister bock (FMB) to quickly determine the part size. Thus replacing the traditional physical verification method of body-in-white Fügen-Meisterbock. This method not only improves the evaluation efficiency of body in white size, shorens the product development cycle and reduces the production cost, but also innovatively puts forward the whole life cycle monitoring scheme of data sealing management. Virtual Fügen matching technology is not only widely used in body-in-white manufacturing, but also provides a reference for the further research and application of virtual size evaluation of body in the future. References | Related Articles | Metrics

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Lightweight Design of Electric Drive Axle Based on Integrated Optimization Platform LIU Qi, WANG Xuan, LIU Tao, CHEN Rui, GENG Haogang, WU Jiang 2024, 49(19): 112-115.  DOI: 10.16638/j.cnki.1671-7988.2024.019.022 Abstract ( )   PDF (1381KB) ( )   Faced with the fierce market competitive environment, when a bridge company actively applied the performance optimization technology of the electric drive bridge under the integrated optimization platform when the driver bridge shell design and development of a certain electric truck shell is actively applied to modeling-a combination of optimized design optimization strategies, in the design of this electric drive axle shell product, based on the same non-linear structure simulation analysis verification model, through the iteration of the two optimized technology applications in the optimization strategy. Under the premise of the intensity and rigidity of the driving axle shell, the minimum weight is the constraint, and the lightweight effect of reducing the weight of the electric drive axle shell by 15.2 kg is finally achieved, achieving the expected design goals. References | Related Articles | Metrics

Process·Materials

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Technology Development of the Low Overspray Paint Printing and Coating from Two-tone Discuss ZHANG Guoyun, HE Xu, TIAN Qiuxia, SU Xiaotong, YANG Haiyi 2024, 49(19): 116-121.  DOI: 10.16638/j.cnki.1671-7988.2024.019.023 Abstract ( )   PDF (1241KB) ( )   Consider the current development stage of the vehicle, it has become the consensus of the vehicle factory to actively carry out the design innovation. As one of the design innovation schemes, two-tone has been adopted by the vehicle factory. However, the growing demand for two-tone has brought many problems to the vehicle manufacturing to be solved. This paper briefly introduces two kinds of widely used two-tone technology which named color film change and conventional two-tone technology, and then introduces one new technology which named low overspray paint print technology. In addition to a brief introduction of the development status of low overspray paint printing technology, it also thinks about the potential impact of this technology on the development of vehicle painting technology in the future. The results show that there is still room for improvement in the weatherability of film materials, while conventional colorization has great pain points in manufacturability and economy, while low-overspray paint printing technology can provide both manufacturability and weatherability. References | Related Articles | Metrics

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Analysis of Production Process of New Energy Vehicle Battery Pack Lower Box LIU Wufeng 2024, 49(19): 122-126.  DOI: 10.16638/j.cnki.1671-7988.2024.019.024 Abstract ( )   PDF (1452KB) ( )   The battery pack lower box is a key component of new energy vehicles, which can provide protection for the battery pack and support the overall structure of the battery pack, and also affect the side impact performance, driving range and service life of the vehicle. In this paper, the advantages and disadvantages of the main production processes such as steel stamping, high strength steel roll pressing, steel aluminum mixing, aluminum alloy extrusion and aluminum alloy die casting are analyzed. The recommended index table for the design, development and application of the battery pack box is summarized, which is helpful to quickly select a reasonable production process of the battery pack box during the project development. This improves the production efficiency of the battery pack lower box, reduces production costs, adapts to market demand, and promotes the development of the new energy vehicle industry. References | Related Articles | Metrics

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Briefly Describe the Prevention and Improvement of Body Collisions and Scratches YANG Jiankang, LI Jifei, HU Keyong, YAN Wei 2024, 49(19): 127-130141.  DOI: 10.16638/j.cnki.1671-7988.2024.019.025 Abstract ( )   PDF (1385KB) ( )   Based on the problem of bump and scratch in the trial production of a sample vehicle, this paper conducts a process verification analysis on how to reduce the causes of bump and scratch in the assembly process from the aspects of field process, process equipment, supplier management, logistics transfer in the production workshop. By optimizing the production site environment, promoting standardized operations, updating the production line tooling equipment, and improving the training of operators, it can effectively prevent the occurrence of vehicle bumps and scratches, ensure product quality, reduce rework and repair costs, improve production efficiency, and provide improvement direction for the later vehicle assembly and transport process to achieve the goal of no bumps and scratches. References | Related Articles | Metrics

Automobile Education

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Research on the Path of Ideological and Political Construction in the Course of Automobile Detection and Diagnostic Technology DING Chenglin1 , SHI Ling1 , DU Xun2 , ZHANG Fengli2 , LIU Hui3 2024, 49(19): 131-134.  DOI: 10.16638/j.cnki.1671-7988.2024.019.026 Abstract ( )   PDF (1158KB) ( )   As the core course of automobile service engineering major, Automobile Detection and Diagnostic Technology not only carries the important task of imparting professional knowledge, but also serves as an important carrier of ideological and political education. Currently, with the deepening of higher education reform, the teaching mode of this course is also facing new challenges and opportunities. In the current course teaching, gradually realizes the importance of the organic combination of ideological and political education and professional teaching for cultivating highquality talents. Therefore, this article deeply discusses the theoretical basis of ideological and political education in the course of Automobile Detection and Diagnostic Technology, searches for the integration points of ideological and political teaching in professional courses, and attempts to construct a curriculum ideological and political evaluation system. Through innovative teaching modes, such as introducing case teaching and practical teaching, ideological and political elements are made closer to reality, more vivid and specific, and thus more effectively integrated into professional course teaching. The proposal of these innovative paths provides strong support for the cultivation of automobile service engineering professionals, and also provides new ideas for the integrated development of ideological and political education and professional education in higher education. References | Related Articles | Metrics

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Teaching Reform and Practice of Automotive Construction Course in Application-oriented Undergraduate Universities LU Zhensheng, WANG Yinghui* , BAI Xilong, ZHANG Yan, CHENG Miao 2024, 49(19): 135-141.  DOI: 10.16638/j.cnki.1671-7988.2024.019.027 Abstract ( )   PDF (2382KB) ( )   In order to highlight the training characteristics of application-oriented undergraduate colleges and universities, this paper reforms the model of Automobile Construction in compulsory courses for automotive service engineering majors. Taking Suihua College undergraduates as the research object, through rearranging the teaching content, the comprehensive utilization of virtual reality (VR) technology, case teaching, curriculum ideology and politics and other teaching means is implemented. The teaching mode of Automobile Construction course is innovated and reformed. At the same time, the teaching results of different teaching modes are analyzed and compared. The results show that the new teaching method is more conducive to students' grasp of the theoretical and experimental knowledge of Automobile Construction course than the traditional teaching method, improves the achievement of the course objectives, and has positive promoting significance for the talent training of automotive service engineering majors in application-oriented undergraduate colleges. References | Related Articles | Metrics

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Research on the Integration Model and Implementation Path of Industry and Education in Applied Universities －Taking Sanya University as an Example SUN Wenfu 2024, 49(19): 142-146.  DOI: 10.16638/j.cnki.1671-7988.2024.019.028 Abstract ( )   PDF (1019KB) ( )   The article takes students as the center, adheres to the path of industry, university, research and application, and systematically promotes the overall planning of the integration of industry and education. Aiming at the upstream and downstream industrial chains of the new energy vehicle industry, benchmarking the ability requirements of high-value positions in enterprises, revising talent training plans, and improving the applied curriculum system. Fully utilize the Geely industrial ecosystem, build high-quality modern industrial colleges, and promote the transformation of education and teaching through product thinking, digital technology innovation, and the integration of industry and education. By bridging the last mile of cultivating applied talents, build iconic achievements in the integration of industry and education with industry influence, and create a model for universities that integrate industry and education. References | Related Articles | Metrics

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Curriculum Reform and Practice of Automotive Electronic Control Technology under the New Engineering Education Framework LI Ruiwei 2024, 49(19): 147-150.  DOI: 10.16638/j.cnki.1671-7988.2024.019.029 Abstract ( )   PDF (1118KB) ( )   With the rapid development of the automotive industry, especially in the field of electronic control technology, traditional educational models are no longer sufficient to meet the industry's demand for high-quality technical talent. This paper focuses on reforming the Automotive Electronic Control Technology course by introducing modern teaching methods, including integrating the latest technology trends into the course content and adopting project-based learning to enhance practical teaching. The results show that these reform measures can significantly increase students' interest in learning, as well as their theoretical and practical abilities, thereby better meeting the talent cultivation needs of the automotive industry under the new engineering education framework. Finally, the paper proposes recommendations for the continuous reform and development of the Automotive Electronic Control Technology course, aiming to provide references and insights for higher education institutions to jointly promote the integration of engineering education and technological development. References | Related Articles | Metrics

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Design and Practice of the Course Hybrid Power Structure and Maintenance Based on Bloom's Theory LI Rong, ZHANG Yintao* 2024, 49(19): 151-154.  DOI: 10.16638/j.cnki.1671-7988.2024.019.030 Abstract ( )   PDF (1147KB) ( )   With the development of automotive technology, the proportion of hybrid vehicles in the automotive market is increasing. Therefore, courses related to hybrid power are crucial for cultivating students' maintenance skills and increasing competitiveness. This article is guided by Bloom's educational philosophy and explores the use of a hybrid teaching model that integrates "pre class clever thinking-in class strong enlightenment-post class diligent exploration" in the course of Hybrid Power Structure and Maintenance. By implementing blended learning design, the teaching objectives and student learning abilities have been effectively achieved, providing reference and assistance for other types of teaching. References | Related Articles | Metrics

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Reform of Teaching Integration of Course Certificate for New Energy Vehicle Technology Majors in Higher Vocational Education －Taking New Energy Vehicle Power Electronics Technology as an Example YANG Licheng, LONG Xiutian, CHEN Jianwei, LIU Zhongping 2024, 49(19): 155-158.  DOI: 10.16638/j.cnki.1671-7988.2024.019.031 Abstract ( )   PDF (1220KB) ( )   "Integration of course and certificate" is to achieve the integration of classroom teaching and vocational qualification training through the connection and correspondence between classroom teaching and vocational qualification certification content, and to achieve the integration of classroom teaching and vocational qualification training, and to achieve the integration of "classroom teaching as vocational qualification training, teaching assessment as vocational skill appraisal". "Integration of course and certificate" is a reform teaching and training model in higher vocational education in China. This article studies and analyzes the reform of the curriculum standards, teaching content, teaching process, and teaching evaluation of the New Energy Vehicle Power Electronics Technology course through the organic integration of the New Energy Vehicle Power Electronics Technology course and the maintenance electrician training. The training content of the maintenance electrician certification is integrated into the teaching content of the New Energy Vehicle Power Electronics Technology course, complete the "Integration of course and certificate", improve the rate of students obtaining certificates, and enable more students to obtain maintenance electrician certificates. At the same time, it can improve students' ability to deal with and analyze problems, and cultivate more high-quality talents who meet the needs of industry development and the upgrading of the new energy vehicle industry. References | Related Articles | Metrics

Standards·Regulations·Management

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Analysis of the Development Strategy and Module Function of Enterprise Consistency Certificate System LIU Jinliang 2024, 49(19): 159-163.  DOI: 10.16638/j.cnki.1671-7988.2024.019.032 Abstract ( )   PDF (1209KB) ( )   Vehicle certificate of conformance is one of the core legal documents in the automobile manufacturing industry. In the process of promoting their own digital strategy, large automobile manufacturers often choose to independently develop vehicle certificate of conformance management systems, and deeply integrate them into the enterprise's R&D process and supply chain management system. This paper aims to explore the specific strategies for the development of such systems, and mainly discusses the data sharing between certificate of conformance system and other systems, the classification of certificate elements, the coding mode of certificate elements, business modules and functions, as well as matters needing attention in the development process, so as to provide practical guidance for enterprises to optimize management process and improve business efficiency. References | Related Articles | Metrics

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Australian Automotive Product Access System LIU Yong, TAN Wanli 2024, 49(19): 164-167.  DOI: 10.16638/j.cnki.1671-7988.2024.019.033 Abstract ( )   PDF (1194KB) ( )   In recent years, domestic automobile enterprises have strengthened their overseas market layout, so the study of foreign automobile product access system has become an important part of automobile export work. This paper briefly introduces the basic situation of automobile access management in Australia, and gives a detailed introduction to the type certification of Australian road vehicles in the Road Motor Vehicle Standards Act (2018), including the application, test, review, approval and release of type certification. At the same time, it focuses on the compilation rules, development process and coordination relationship between Australian design rule (ADR) and economic commission of Europe (ECE). Through the above research, it is helpful for domestic automobile enterprises to understand the Australian automobile product access system and facilitate their entry into the Australian market. References | Related Articles | Metrics