Archive

30 May 2025, Volume 50 Issue 10 Previous Issue   
---
New Energy Vehicle
Intelligent Connected Vehicle
Design and Research
Testing and Experiment
Process·Materials
Use and Maintenance
Automobile Education
Standards·Regulations·Management


For Selected:

Download Citations EndNote Ris BibTeX

Toggle Thumbnails

New Energy Vehicle

Select

Study on Optimization of Energy Flow Testing for Pure EV Light Duty Trucks YAN Qiang, ZHANG Bo* , WANG Manman, GAO Tianxiang 2025, 50(10): 1-5.  DOI: 10.16638/j.cnki.1671-7988.2025.010.001 Abstract ( )   PDF (1867KB) ( )   This paper aims to realize the visualization of energy flow ratio, quantitative analysis of power consumption, matching verification of key systems and comparative analysis with competitors. Through directional collection, real-time data calculation, integral processing, dynamic data fitting and cluster analysis technology, the voltage, current, temperature, controller area network (CAN) message and global positioning system (GPS) data of new energy vehicles are visualized. By quantifying the vehicle's energy flow and distribution, the effectiveness of strategy optimization is evaluated, and performance parameters are adjusted accordingly to enhance overall efficiency. This study contributes to enhancing the energy consumption advantages of pure electric light trucks and their adaptability under complex road conditions, which is significant for maintaining a competitive market advantage. A set of methods for testing and optimizing the energy flow of pure electric light trucks on actual roads has been developed. References | Related Articles | Metrics

Select

Research on Influence Factors of High and Low Temperature Driving Range of Pure Electric Heavy-duty Vehicle Based on Energy Flow Analysis XU Dandan, GAO Dongzhi, LI Tong, HUANG Pengcheng, LI Tengteng 2025, 50(10): 6-11.  DOI: 10.16638/j.cnki.1671-7988.2025.010.002 Abstract ( )   PDF (1186KB) ( )   In order to explore the variation law of vehicle energy flow in high and low temperature environment of heavy-duty pure electric commercial vehicles, this article conducts energy flow tests on heavy-duty pure electric vehicles under different ambient temperatures using a chassis dynamometer. The study aims to investigate the primary factors affecting the vehicle's energy consumption and driving range. Compared to normal temperature conditions, the total battery discharge decreased by 5.1% and 2.8% in low-temperature and high-temperature environments, respectively, with the driving range decreasing by 23.6% and 6.7%. Through whole-vehicle energy analysis, it is found that under low-temperature conditions, the electricity consumes to overcome driving resistance increased by approximately 8.4%, the power consumption of air conditioning heating and battery positive temperature coefficient (PTC) thermistor is about 7.3% of the total discharge power. In high-temperature environments, battery liquid cooling consumes the most electricity, accounting for about 3.1% of the total discharge, followed by the direct current to direct current (DC/DC) converter consumption, which accountes for about 2.2% of the total discharge, air conditioning refrigeration consumes less than 1% of the total discharge. Therefore, optimizing the vehicle's thermal management control strategy is crucial for reducing energy consumption and improving driving range in both low-and high-temperature environments. References | Related Articles | Metrics

Select

Analysis of Power Supply Mode Switching Control Technology for Refrigeration Units of Fuel Cell Refrigerated Vehicles LI Meng1 , MA Xinbing1 , ZHANG Xuxin2 , ZHANG Xiangbo1 , LAI Jiale1 2025, 50(10): 12-14,98.  DOI: 10.16638/j.cnki.1671-7988.2025.010.003 Abstract ( )   PDF (555KB) ( )   Aiming at the problems of high energy consumption and limited driving range of the refrigeration unit of fuel cell refrigerated vehicles, this article proposes an energy supply system of "city electricity consumption" based on dual-mode switching. Through the intelligent switching controller integrated with the controller area network (CAN) bus communication and multi-level safety protection mechanisms, including contactor interlocking, pre-charge detection and insulation monitoring, the safe and seamless switching between the mains power supply and the power battery supply mode has been achieved. Real vehicle verification shows that under the high-voltage state of the entire vehicle, the system can quickly complete the conversion from battery mode to mains power mode after the driver triggers the switching command, and the switching time is 4.2 s. During the switching process, the refrigeration unit operates continuously and stably without overcurrent faults. After adopting the direct drive mode of municipal electricity, the energy conversion loss of the entire vehicle is significantly reduced, and the economic efficiency of cold chain transportation and the service life of the fuel cell system are effectively improved, providing a feasible technical solution to the contradiction between the range and refrigeration demand of refrigerated vehicles. References | Related Articles | Metrics

Select

Brief Analysis on the Impact of Vehicle Weight Management on Economic Performance of Vehicles LIN Hua, TANG Yulin 2025, 50(10): 15-19,114.  DOI: 10.16638/j.cnki.1671-7988.2025.010.004 Abstract ( )   PDF (1141KB) ( )   With the increasingly strict regulations on automobile fuel economy and power consumption and consumers' attention to the economy of automobile use, in order to obtain higher fuel economy and lower power consumption, manufacturers are paying more and more attention to the control of vehicle weight. Through data analysis, every 10% reduction in vehicle weight, fuel consumption can be reduced by 5% to 8%. In order to control the weight of the vehicle within a reasonable range, so that it can meet the requirements of regulations, but also reduce the economy of use of consumers, so the weight management of the vehicle must be controlled in the new product development stage. Vehicle weight management mainly includes weight disassembly analysis of competing vehicles, goal formulation and decomposition, lightweight program formulation, goal achievement and other activities. This paper mainly describes the relationship between fuel consumption, power consumption and weight, weight management process, weight target setting and decomposition, lightweight program planning, weight impact on fuel economy. References | Related Articles | Metrics

Select

Electric Bus Energy Consumption Prediction Combining Vehicle Dynamics and LSTM WEI Haodong, SONG Yugui, HE Jiacheng 2025, 50(10): 20-26.  DOI: 10.16638/j.cnki.1671-7988.2025.010.005 Abstract ( )   PDF (1060KB) ( )   With the rapid development of new energy vehicles, the widespread application of pure electric buses in urban transportation has brought increasing attention to the challenges of energy consumption management and operational efficiency. To achieve accurate evaluation and prediction of energy consumption during vehicle operation, a hybrid prediction method is proposed that integrates physical mechanism modeling with deep learning techniques. Taking the vehicle longitudinal dynamics model as the theoretical foundation, the method establishes the relationship between energy consumption and operational parameters. Key physical features are extracted from naturalistic driving data. To effectively capture the temporal characteristics of energy consumption, a multi-layer long short term memory (LSTM) network architecture is designed to construct a data-driven sequence prediction model. The proposed model is validated using real-world driving data from four different electric buses. Experimental results show that the model achieves an average R2 of 0.85 and a mean absolute percentage error (MAPE) of 8.34%, demonstrating strong predictive accuracy and generalization capability. This method proves effective in characterizing the energy consumption behavior of pure electric buses under complex driving conditions, exhibiting high fitting ability and adaptability. It provides a solid theoretical basis and methodological support for the optimization of energy-efficient driving strategies and the design of energy management systems. References | Related Articles | Metrics

Intelligent Connected Vehicle

Select

Research on Optimization of Software Development Process of Automotive Electronic Control Unit Based on Cloud Collaboration JI Shuang1 , WANG Zexing1* , YANG Jiachen2 , PENG Jiankun2 , LI Ting1 2025, 50(10): 27-33.  DOI: 10.16638/j.cnki.1671-7988.2025.010.006 Abstract ( )   PDF (1626KB) ( )   With the rapid development of the automotive industry, software development for automotive electronic control unit (ECU) has become a key technology in the trend of intelligence and networking. This study is based on the V-shaped development process and testing left shift theory, aiming to optimize the software development process of automotive electronic control units to achieve efficient collaborative management of cloud toolchains. The research content includes the integration of small-scale V-shaped processes, project creation and approval mechanisms, development toolchain management, resource allocation optimization, schedule control strategies, quality control systems, communication and coordination mechanisms, change iteration processes, and data tracea-bility management. This study has important theoretical and practical significance for improving the professional level of software development for automotive electronic control units, reducing development costs, and ensuring software reliability and safety. References | Related Articles | Metrics

Select

Study on Test and Evaluation Method of in-Vehicle Voice Interaction System CHEN Yuanyuan, LI Yi, PAN Deng, ZHANG Qiang, HUANG Junfu 2025, 50(10): 34-40.  DOI: 10.16638/j.cnki.1671-7988.2025.010.007 Abstract ( )   PDF (1499KB) ( )   With the rapid development of new technologies such as autonomous driving and intelligent cockpit in automobile, voice interaction has emerged as one of the most widely adopted modes of interaction in vehicle cabins. It not only makes human-vehicle interaction more natural and convenient but also reduces accident rates and enhances driving safety. Given the variety of voice interaction products available in the market, it is crucial to have a feasible and reliable test-evaluation method to assess whether these products, once integrated into vehicle infotainment systems, meet the practical demands of in-driving interaction. Based on user research, this paper designs test scenarios and evaluation metrics from both subjective and objective perspectives, considering both driving safety and user experience. Six vehicle models are evaluated for their voice interaction systems. The research findings indicate that the proposed method is executable and capable of evaluating the merits and demerits of in-vehicle voice interaction systems, providing valuable insights for system functional development and design, benchmark tests, as well as optimization and iteration processes. References | Related Articles | Metrics

Select

Automatic Cross-Modal Joint Calibration of LiDAR and Cameras LU Yuwei1,2 , TANG Wentao1 , LI Yuanzhi3 , WEI Chugan1 2025, 50(10): 41-47.  DOI: 10.16638/j.cnki.1671-7988.2025.010.008 Abstract ( )   PDF (1499KB) ( )   With the rapid development of autonomous driving and robotics technology, multi-sensor fusion technology is becoming increasingly important. especially the external parameter calibration of LiDAR and cameras, has become crucial. The article proposes an automatic external parameter calibration method that combines the non-repetitive scanning mode of LiDAR with the camera. By using a specially designed hollowed- out checkerboard calibration board and combining the point cloud with the geometric features of the image for extraction and matching. The experimental results show that the above-mentioned method can effectively extract three-dimensional corner points and two-dimensional image points and perform automated calibration. Furthermore, compared with traditional methods, this method shows significant advantages in terms of calibration accuracy, efficiency and applicability. The research results provide strong support for the precise navigation and environmental perception of mobile robots and intelligent driving vehicles. References | Related Articles | Metrics

Select

Analysis and Solution of Clock Jitter in Automated Driving System ZHU Jian 2025, 50(10): 48-54.  DOI: 10.16638/j.cnki.1671-7988.2025.010.009 Abstract ( )   PDF (1269KB) ( )   In order to solve the problem of instability of automated driving system caused by clock signal of automated driving system, or the exit of automated driving algorithm service process, firstly, this article describes the interference factors of navigation satellite timing technology, and analyzes that how the clock jitter impacts the automated driving system. Then, a solution with a dual clock system is proposed. It is used as the system clock of the automated driving system, it is provided by the high-precision crystal oscillator of the automated driving domain controller. It ensures that the time of the automated driving sensing system, planning system and controlling system is stable and continuous. Next, the navigation satellite timing synchronization clock is introduced, it serves as the basis for clock alignment in vehicle-to-everything, and is used for recording logs and events with actual time. At last, the stability of the dual clock system is verified through computer programming experiments, and it further proves the superiority of the solution. References | Related Articles | Metrics

Select

Research on Lightweight Vehicle Detection Algorithm Based on YOLOv5s WANG Xiangnian, LIU Yumeng, HU Qing 2025, 50(10): 55-60.  DOI: 10.16638/j.cnki.1671-7988.2025.010.010 Abstract ( )   PDF (3050KB) ( )   In recent years, with the rapid development of deep learning technology, autonomous driving technology has received increasing attention in the field of intelligent transportation. To enhance the real-time performance of vehicle detection and reduce the requirements for memory and computational resources, this paper proposes a lightweight improvement to the YOLOv5s algorithm. Firstly, the PP-LCNet lightweight neural network is introduced to replace the backbone network of YOLOv5s, resulting in the construction of the lightweight model YOLOv5s-PP. Secondly, the loss function is improved by adopting EIOU Loss to replace the original CIOU Loss, which improves the efficiency and accuracy of bounding box regression. Lastly, the SimOTA strategy is introduced for dynamic label assignment to adapt to complex and diverse road environments. Experimental results demonstrate that, the improved YOLOv5s-PPES algorithm exhibits significant improvements in detection speed and parameter count, with overall superior performance. References | Related Articles | Metrics

Design and Research

Select

Design and Implementation of Intelligent Tool Chain for Software Development of Automotive Electronic Control Unit YANG Hengjie1 , WANG Zexing1* , JI Shuang1 , YANG Jiachen2 , PENG Jiankun2 , LI Ting1 2025, 50(10): 61-65.  DOI: 10.16638/j.cnki.1671-7988.2025.010.011 Abstract ( )   PDF (1258KB) ( )   This research focuses on the encapsulation technology of software cloudification services based on cloud platforms, aiming to achieve integrated management of tools. Through the software development and testing Apps integrated into the platform, users can directly invoke local tools for file processing, enabling the integration of online workflows with offline operations and driving the digital and unified transformation of software development and testing. By leveraging innovative methodologies such as data standardization, parallel and distributed computing technologies, online invocation and orchestration of software tools, enhancement of the stability and flexibility of automated workflows, and the establishment of interdisciplinary collaborative platforms, the efficiency of software research and development has been significantly improved.The study further constructs an efficient data management platform, optimizes the software testing process, and facilitates interdisciplinary collaboration. Results demonstrate that the intelligent tool chain technology effectively supports all phases of automotive electronic control unit (ECU) software development, providing robust support for enterprises in exploring and advancing technologies related to automotive intelligence and electrification. References | Related Articles | Metrics

Select

Strength Analysis and Structural Optimization of a Hybrid Steel Battery Box LONG Shuntong, LU Ruili, SHI Shengqi, LIN Yuexin, LIN Yitian 2025, 50(10): 66-71.  DOI: 10.16638/j.cnki.1671-7988.2025.010.012 Abstract ( )   PDF (1811KB) ( )   With the penetration of new energy exceeding 50%, hybrid new energy vehicles are becoming more and more popular, in which the application of high-strength rolled steel battery box is also becoming more and more widespread in the market. In this paper, based on a hybrid battery pack, the structural simulation analysis and optimization of the rolled steel box are carried out. Firstly, the finite element simulation model of the steel battery box is established in HyperMesh, modal, static and random vibration strength analysis are carried out, and structural optimization is carried out for the substandard items in the simulation. After optimization, the rolled steel battery box meets the strength requirements, which provides a reference for the design of subsequent steel battery boxes. References | Related Articles | Metrics

Select

Design of a Flip-out and Pull-out Pedal Structure ZHANG Guangyu 2025, 50(10): 72-75.  DOI: 10.16638/j.cnki.1671-7988.2025.010.013 Abstract ( )   PDF (2404KB) ( )   The height of the front windshield of heavy-duty trucks is generally high. In order to facilitate the replacement of wiper blades or wiping of the windshield, there is a problem of how to set the pedal. The existing vehicle pedals ate mostly set on the bumper. The layout is simple, but the height of the pedal from the ground exceeds 650 mm, which is poor in human-machine interaction, not conducive to the use of passengers, and unsafe. To solve this problem, a flip-out and pull-out pedal is designed. When in use, the height of the pedal from the ground can be reduced to less than 500 mm. When not in use, it is retracted and hidden under the bumper, which does not take up space and does not affect the approach angle of off-road vehicles and engineering vehicles. At the same time, an anti-skid plate is set on the pedal. The width of the anti-skid plate reaches 450 mm, which provides a large standing space for both feet and is safe and convenient to use. In order to ensure that the strength and reliability of the finite element simulation technology is used for calculation and verification, the analysis results show that the structural strength meets the requirements. References | Related Articles | Metrics

Select

Research on Adaptive Control System of Semi-active Suspension for Multi-axle Vehicle ZHANG Zhongsheng1 , ZHAO Wei2 , QIU Lulu1 , CHANG Qiuhong1 , MENG Xiangwei1 , WEI Fulin1 2025, 50(10): 76-81.  DOI: 10.16638/j.cnki.1671-7988.2025.010.014 Abstract ( )   PDF (1366KB) ( )   Starting from the limitation of traditional suspension for multi-axle vehicles, active suspension and semi-active suspension are introduced to effectively improve the driving and handling performance of vehicles. The dynamics model and random road excitation model of multiaxle vehicle are established, and the ride comfort of multi-axle vehicle is simulated by MATLAB software. Based on the evaluation index of vehicle suspension system, the semi-active control strategy and scheme of vehicle suspension system are studied. Through the comparison of simulation data, the results show that the semi-active suspension with single objective adaptive control can obviously improve the ride comfort and handling stability of multi-axle vehicles. References | Related Articles | Metrics

Select

Overview of Optimization Strategies for 360°Panoramic Image View Occlusion Navigation Display Problem NIU Huijun 2025, 50(10): 82-88.  DOI: 10.16638/j.cnki.1671-7988.2025.010.015 Abstract ( )   PDF (2588KB) ( )   With the advancement of automotive technology, 360°panoramic images and navigation systems have become essential features of modern cars, playing a crucial role in enhancing driving convenience and safety. However, the problem of 360°panoramic images covering the navigation information on the central control screen during navigation driving may affect the driver's accurate grasp of road condition information and the formulation of driving decisions. Regarding this issue, the article introduces several commonly used types of solutions and strategies, namely trigger condition limitations, intelligent control strategies, navigation synchronous instrument display, head-up display (HUD) navigation, intelligent hanging window/picture-in-picture display, navigation floating display, and intelligent split-screen display. Finally, the article puts forward some optimization directions and suggestions. It aims to provide references for researchers and developers in the automotive industry to further enhance the driving experience of users References | Related Articles | Metrics

Testing and Experiment

Select

Analysis of Vehicle Road Load of Direct Measurement in Aerodynamic-Acoustic Wind Tunnel ZHAO Hongfei, LIAO Siyao, ZHAO Zhixiang, WANG Haiyang 2025, 50(10): 89-93.  DOI: 10.16638/j.cnki.1671-7988.2025.010.016 Abstract ( )   PDF (1647KB) ( )   With the development of domestic full-size automobile wind tunnel technology and new energy vehicle technology, road load (wind tunnel method) in Light Vehicle Pollutant Emission Limits and Measurement Methods (China's Sixth Stage) (GB 18352.6－2016) is gradually being used for vehicle road load measurement. However, there is a deviation between the fixed posture of the vehicle in the wind tunnel test and the actual road driving posture, and the vehicle needs to switch between the wind tunnel laboratory and the drum laboratory, which is inefficient. In order to verify the effectiveness of the method of measuring vehicle road load directly in the aerodynamic-acoustic wind tunnel, this paper directly simulates the vehicle fixed posture under the real road in the aerodynamic-acoustic wind tunnel, and simultaneously measures the wind resistance and roll resistance of the vehicle in a test, and directly obtains the road load of the vehicle. The comparison of road load measured directly by wind tunnel and coastdown method shows that, the overall trend of the road load resistance curve measured by the two methods is the same, and the difference is small. the difference of the cyclic energy in each speed segment of world light vehicle test cycle (WLTC) is small. The difference of total circulating energy is also small, and the total cycle energy difference is less than ±5% specified in the standard, which proves the effectiveness of this method and provides a new test method for the subsequent road load testing and research of new energy vehicles. References | Related Articles | Metrics

Select

Analysis and Optimization of the Vibration Transfer Function of a Certain Cab DONG Yunxia, FAN Xiaodong* , ZHANG Peng, CHEN Jinmin 2025, 50(10): 94-98.  DOI: 10.16638/j.cnki.1671-7988.2025.010.017 Abstract ( )   PDF (2316KB) ( )   Vibration is an important indicator of vehicle comfortability. A certain vehicle trimmed body is taken as the research object, the vibration transfer function of the trimmed body is optimized by experiments and simulations methods. Through the HyperWorks software simulation analysis, using the suspension points of the TB as excitation points, and the driver's seat rail as response points. Identify vibration response between 20～80 Hz, optimize the vibration acceleration of the corresponding frequencies. Additionally, LMS vibration testing equipment is utilized to test the trimmed body vibration, and the effectiveness of the simulation model is verified. References | Related Articles | Metrics

Select

Research on the Vehicle Acceleration Durability Test Method Based on Damage Targets CHEN Haijiang, LIU Sutao, SHI Zhixuan 2025, 50(10): 99-103.  DOI: 10.16638/j.cnki.1671-7988.2025.010.018 Abstract ( )   PDF (1936KB) ( )   With the continuous acceleration of the vehicle development process, the importance of the test track accelerated durability test method in the vehicle project development process is increasingly prominent. Based on the road load spectra collected from multiple vehicle model projects, this article successfully transplanted the durability test specification of an external professional test track to the company's internal test track by conducting damage calculation and analysis on the vehicle and key components. According to the principle of damage equivalence, while ensuring the certification quality, it significantly shortened the test cycle and reduced the test cost, and at the same time improved the response speed of problem solving, enabling the rapid and accurate test certification of the vehicle chassis structural components. References | Related Articles | Metrics

Process·Materials

Select

Lightweight Design and Mechanical Performance Verification of Composite Material Leaf Springs HAO Zhikuan, LI Xiaoxin* , ZHANG Hanyu 2025, 50(10): 104-109.  DOI: 10.16638/j.cnki.1671-7988.2025.010.019 Abstract ( )   PDF (1772KB) ( )   This paper ensures that the stiffness of composite material leaf springs meets the required standards while maximizing their strength and achieving a weight reduction target of 30% for lightweighting. Based on the theory of composite laminate plates, geometric dimensions are selected as design variables to construct an optimization model targeting stiffness, strength, and mass. The genetic algorithm is adopted to optimize the design process. In terms of strength, finite element simulation verification under four strength conditions is conducted on the lightweight composite material leaf springs using ABAQUS. For stiffness, finite element simulation verification is performed under four loads and compared with bench test results of physical samples before optimization. The results indicate that after achieving a 30% reduction in mass, the safety factors for tensile and compressive strengths of the composite material leaf springs remain above 1.0. The error between the stiffness simulation analysis results of the composite material leaf springs and the bench test results of the physical samples before optimization is within ±3%, verifying that the stiffness of the lightweight composite material leaf springs meets the required standards. This research not only validates the rationality of the lightweight design but also provides a scientific basis for structural optimization of composite material leaf springs. References | Related Articles | Metrics

Select

Water Tightness Analysis and Structural Optimization of Door Cover ZHENG Bo, WEN Guan, ZHOU Quanxu 2025, 50(10): 110-114.  DOI: 10.16638/j.cnki.1671-7988.2025.010.020 Abstract ( )   PDF (1849KB) ( )   Door cover is an important sealing component installed on the assembly hole of window lifter. Its main function is to isolate the dry and wet areas of inner panel and prevent water and dust from entering the passenger compartment or damaging electronic components. The assembly holes of window lifter are different among different automobile models, but the connection position of door cover is standard cross-section. Taking a certain automobile model as an example, in view of the problem of door cover leakage problem during water management experiment is studied. Deeply analyzes the water falling mechanism and production quality factors that may cause water leakage of cover and and formulates structural measure for the cover cross-section. The results show that bigger gap of window slot can result in insufficient overlap between outer strip and glass. Exceeding the tolerance of inner panel planeness will lead to insufficient overlap between sheet metal and cover lip. Smaller edge fold height of inner panel or significant size fluctuation will cause gap in connection position. If these production quality factors are not properly controlled, they will increase the risk of water leakage. Increasing the thickness of the upper edge wall of cover to fit the flange can reduce the amount of water entering the upper cavity. Adding drainage hole on the inner panel can effectively divert the water in the cavity lower edge of cover. Designing structural reinforcement along the lower edge of cover can enhance the support between the lower edge of cover and inner panel, reducing the risk of water leakage. Finally, the effectiveness of production quality control and structural optimization is verified via water management experiment, providing technical reference for the analysis and solution of such engineering problems in the future. References | Related Articles | Metrics

Select

Research and Application of Tire Nut Sorting and Conveying Mechanisms GAO Yong 2025, 50(10): 115-118,129.  DOI: 10.16638/j.cnki.1671-7988.2025.010.021 Abstract ( )   PDF (1812KB) ( )   In modern automobile manufacturing, efficiency and environmental sustainability have become key driving factors for industry development. This article thoroughly explores the application of a novel tire nut sorting mechanism, aiming to identify and improve upon the shortcomings of traditional tire nut sorting systems, and to propose an innovative solution that enhances the overall performance of the production line. The research integrates industrial robotics, advanced visual recognition systems, and precisely controlled servo technologies to design and implement a completely new sorting solution, which has been successfully applied in the actual production process of a major vehicle manufacturing company. The new solution not only significantly boosts production efficiency but also effectively reduces noise pollution and equipment failure rates in the working environment. Through the analysis of this innovative practice, the paper provides valuable practical experience and technical references for the automotive industry as it moves towards higher quality standards. Additionally, it is of great significance for promoting the entire manufacturing sector towards smarter and greener development. References | Related Articles | Metrics

Select

Analysis of the Case of Wrong-Hole Assembly of Subframe in the Trial Production Stage of S-New Model DONG Liangliang, ZENG Zhaolong, ZHENG Yaokai, XIANG Yang, LIU Tibo 2025, 50(10): 119-123.  DOI: 10.16638/j.cnki.1671-7988.2025.010.022 Abstract ( )   PDF (2592KB) ( )   The wrong-hole problem of automation assembly is one of the fault problems that often occur during the production process of automobiles, and the causes of it are complicated and diverse. This article takes the automatic assembly of the subframe wrong-hole faults in the industrialized trial stage of S-new model in a certain company as an example. The troubleshooting process in the actual production process is summarized. It mainly detailed analyzes the reasons for the wrong-hole when the subframe is automatically assembled from the aspect of the coating process and the white body structure, and by means of benchmarking analysis method, effective improvement measures for structural optimization are put forward to solve the problem of wrong-hole problem of automatically assembled, so as to solve the practical problem. It is hoped that through this case sharing, it can provide practical experience and useful ideas for automated technical personnel in the automotive industry, and reduce the incidence of automatic assembly wrong-hole. References | Related Articles | Metrics

Select

Analysis of the Lightweight and Flexible Transmission System Shared by New Energy and Fuel Vehicle Bodies JIANG Xianmao 2025, 50(10): 124-129.  DOI: 10.16638/j.cnki.1671-7988.2025.010.023 Abstract ( )   PDF (1675KB) ( )   With the continuous introduction of new energy vehicles by vehicle manufacturers, the structural differences in the bottom of the body-in-white between new energy vehicles and traditional fuel vehicles, as well as the increased weight of the new energy body-in-white, pose significant challenges to the load capacity and co-line compatibility of the body-in-white transfer systems and their accompanying fixtures in the welding workshop. This article introduces a multi-platform lightweight and flexible accompanying fixture transmission system suitable for the co-line production of new energy and traditional fuel vehicle body-in-white architectures. This system innovatively incorporates new materials, new processes, and new equipment technologies, achieving a weight reduction of 250 kg for the accompanying fixtures and ensuring that the total load does not exceed the rated load of 1 500 kg for high-speed roller beds after the introduction of new energy vehicles. It realizes the lightweight, flexible, and standardized accompanying fixtures. This further achieves the lean integration of the manufacturing lines for new energy and traditional vehicle body-in-white, providing a reference for the common manufacturing challenges faced by the body-in-white welding workshops of various vehicle manufacturers due to the introduction of new energy vehicle models. References | Related Articles | Metrics

Use and Maintenance

Select

Research and Analysis on CAN Bus Fault Detection of Magotan B8L Based on the Integration of Simulation and Experiment KONG Tianzeng1 , ZHANG Zhixiang1 , LIU Zhiyuan2 , ZHANG Yongqin1 , LI Guorui1 2025, 50(10): 130-134,163.  DOI: 10.16638/j.cnki.1671-7988.2025.010.024 Abstract ( )   PDF (2195KB) ( )   Controller area network (CAN) bus malfunctions can exert numerous influences on vehicles, such as local functional failure, decreased power, increased fuel consumption, and even circumstances where the vehicle cannot be accessed or started. This paper takes the 2019 Volkswagen Magotan B8L as the experimental platform, and with the aid of EveryCircuit software simulation and real vehicle tests, conducts experimental analyses on the CAN bus under different fault modes. Through the research methods and measured data in this paper, it is capable of providing references for the diagnosis and elimination of vehicle CAN bus faults, presenting an efficient and expeditious maintenance approach and thinking. References | Related Articles | Metrics

Select

Frequent Regeneration Analysis of Flatbed Truck's Aftertreatment System ZHANG Xiqian, WANG Yangyang, ZUO Anqi, WANG Chunlei 2025, 50(10): 135-138,150.  DOI: 10.16638/j.cnki.1671-7988.2025.010.025 Abstract ( )   PDF (1663KB) ( )   To study the performance of the aftertreatment system in actual operation and solve the aftertreatment problems encountered by non-road stage IV diesel engines during use, this paper takes the flatbed truck as the research object and combines actual operation road maps,the article focuses on flatbed trucks as the research subject, integrating actual operational road maps to analyze the components of fuel and aftertreatment ash. This analysis aims to investigate the underlying reasons for the frequent regeneration of the aftertreatment system. Ultimately, the reliability of the analytical results is validated through market tracking. The results show that the use of substandard diesel fuel caused reprocessing sulfur poisoning, which led to the failure of reprocessing regeneration. In addition, the long-term low-load condition of the diesel engine leads to the low exhaust temperature of the aftertreatment, resulting in the rapid accumulation of carbon deposits in the aftertreatment and the frequent regeneration cycle. The research results provide a reference for solving such market failures in the future. References | Related Articles | Metrics

Automobile Education

Select

Analysis of the Relationship between Teachers' Digital Literacy in the New Energy Vehicle Major and the Overseas Expansion of Vocational Education YANG Xingguo 2025, 50(10): 139-144.  DOI: 10.16638/j.cnki.1671-7988.2025.010.026 Abstract ( )   PDF (1358KB) ( )   In the strategic background of new energy vehicles responding to the "Belt and Road" initiative to launch the " Overseas Expansion", vocational education, as the most closely connected industry and the most efficient education type to serve the economy, faces major opportunities and challenges in the training of international technical talents and international production capacity cooperation. This work relies on the digital literacy of teachers to study the necessity of vocational education for the new energy vehicle profession to go global from the aspects of building a high-level international teacher team, constructing high-quality digital teaching resources, developing an international distance education platform, and constructing an evaluation system for overseas technical and skilled talent training models. It analyzes the inherent connection between the two and explores the ways for vocational education to go global with the output of teaching. Research has shown that teachers' digital literacy is not only the core driving force for vocational education to go global but also the successful guarantee for vocational education to go global. References | Related Articles | Metrics

Select

The Practice of Ideological and Political Education in Automotive Specialty Courses of Higher Vocational Colleges Enabled by Digitalization LI Bing 2025, 50(10): 145-150.  DOI: 10.16638/j.cnki.1671-7988.2025.010.027 Abstract ( )   PDF (1046KB) ( )   The rapid development of digital technology, with its unique replicability, attractiveness, and sensory presentation effects, has quickly become an important entry point for deepening teaching reform in higher vocational education in the new era. It helps to form a curriculum-based ideological and political education system in the teaching process of automotive professional courses, fully implementing the fundamental requirement of fostering virtue and nurturing talent. This article, under the background of digital transformation, clarifies the problems existing in the ideological and political education construction of automotive professional courses, analyzes the core advantages of digital technology empowering the construction of curriculum-based ideological and political education, and proposes the construction path of the ideological and political education system for automotive professional courses, hoping to provide valuable references for the curriculum-based ideological and political education construction work of other colleges and universities. References | Related Articles | Metrics

Select

Exploration and Practice of Teaching Reform for Automobile Principles and Structure Course under the Background of New Engineering SONG Xiaoyan, LIU Feifei, LI Yanchao 2025, 50(10): 151-157.  DOI: 10.16638/j.cnki.1671-7988.2025.010.028 Abstract ( )   PDF (2032KB) ( )   Against the backdrop of new engineering, the instructional design and implementation of the Automotive Principles and Construction course is particularly critical. The article begins by emphasizing the importance of the course and the impact of new engineering on it in the introduction. Adhering to a student-centered teaching philosophy, the article clarifies specific learning objectives. At the level of instructional design, careful planning has been carried out in terms of course objectives and content layout. By employing a variety of teaching methods, such as visual teaching, practical teaching, and case-based teaching, the aim is to stimulate students' interest in learning and increase their participation. At the same time, modern educational technology is utilized to enhance the effectiveness of classroom instruction. The article establishes a diversified teaching evaluation system, including chapter quizzes, practical operation assessments, group project evaluations, and teacher evaluations, to comprehensively assess students' learning outcomes. In this process, the cultivation of students' abilities is emphasized, including practical skills, innovation, and teamwork. Finally, through teaching reflection, lessons are summarized to continuously optimize course instruction, better meet the development needs of new engineering, and lay a solid foundation for cultivating high-quality automotive professionals. References | Related Articles | Metrics

Select

Research on Promoting Education and Teaching Reform by Skill Competition in Higher Vocational Colleges －Take the Automobile Fault Repair Event as an Example SHAO Haiquan1 , WANG Bangjun1 , ZHANG Chuangchuang2 2025, 50(10): 158-163.  DOI: 10.16638/j.cnki.1671-7988.2025.010.029 Abstract ( )   PDF (1406KB) ( )   In recent years, higher vocational colleges have paid more and more attention to all kinds of skill competitions at all levels, especially the national vocational college skill competitions, which have played a good role in promoting the education and teaching reform of higher vocational colleges, such as talent training mode, course content, teacher team and school-enterprise cooperation. This paper focuses on promoting the reform of education and teaching reform in higher vocational skills competition in five aspects: promoting the reform and innovation of talent training mode, optimizing the curriculum system and teaching content. Taking automobile trouble repair competition as an example, this paper studies the docking of competition standards and requirements with talent training programs and course contents. The reform should be intensified form the aspects of talent training model innovation, teacher training, experimental and practical training teaching, etc., and the results of competition and education should be improved. References | Related Articles | Metrics

Standards·Regulations·Management

Select

Study on the Main Influencing Factors of Traffic Safety on Sichuan Tibet Line Based on Entropy Change Game-Bayesian Network LI Shizhong, DAI Jinqiang, YU Haibing, SHEN Chenming, WANG Xinyan* 2025, 50(10): 164-170.  DOI: 10.16638/j.cnki.1671-7988.2025.010.030 Abstract ( )   PDF (2175KB) ( )   This paper aims to identify the main influencing factors of traffic safety on Sichuan-Tibet line, and to provide a scientific basis for improving the traffic safety situation and reducing the incidence of traffic accidents on this highway. Taking the G317 Naqu section of the Sichuan-Tibet line as the research object, we screened the main factors of road accidents, used the entropy weightcoefficient of variation-game combination method to calculate and analyze the weights of the important factors that caused the accidents, and then used the Bayesian network analysis method to classify the degree of road risk, and thus conducted a road safety risk evaluation on the Naqu section of the Sichuan-Tibet line. The results show that the road safety level in this region is low, and human factors and environmental factors are the important influencing factors among the four subsystems, and driving fatigue and weather factors are the important factors affecting road safety. Therefore, in the road safety management of the Naqu section of the Sichuan-Tibet Highway, appropriate measures should be formulated, focusing on human factors and environmental factors. For human factors, the supervision of driver fatigue driving should be strengthened to ensure that drivers have enough rest to reduce the phenomenon of fatigue driving; for environmental factors, it is necessary to establish a perfect weather monitoring and early warning system, and at the same time, in bad weather conditions, timely traffic control measures or release road information to drivers to guide their safe driving, so as to improve the level of traffic safety and reduce the incidence of accidents. References | Related Articles | Metrics