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21 October 2024, Volume 49 Issue 20 Previous Issue   
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New Energy Vehicle
Intelligent Connected Vehicle
Design and Research
Process·Materials
Automobile Education
Standards·Regulations·Management
Reviews


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New Energy Vehicle

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Research on Steering Stability of Distributed Drive Electric Vehicle Based on RBF Sliding Mode Control YAN Wenzhi, ZHI Jinning, JIN Feng 2024, 49(20): 1-8,18.  DOI: 10.16638/j.cnki.1671-7988.2024.020.001 Abstract ( )   PDF (1214KB) ( )   The four-wheel torque of distributed drive electric vehicle is independent and controllable, the drive motor response is fast, and the transmission chain is short, but the vehicle is prone to sideslip risk due to the coupling relationship between the longitudinal and lateral forces of the wheel when turning. Therefore, in order to improve the steering stability of distributed drive electric vehicle, an improved sliding mode control strategy based on radial basis function (RBF) neural network is proposed in this paper. The vehicle adopts a layered control structure, and the upper layer adopts a sliding mode controller to control the yawing moment. In order to avoid the "buffeting" problem, a RBF neural network is introduced to optimize and improve the sliding mode gain in the traditional sliding mode control algorithm. The lower driving force distribution layer distributes the four-wheel torque reasonably according to the dynamic transfer characteristics of the vertical load of the tire, so that it can meet the driving force and additional yaw torque requirements of the vehicle. Finally, the joint simulation is carried out in CarSim and MATLAB/Simulink. The results show that the improved sliding mode controller can reduce the front wheel angle at high speed, the yaw speed and the side yaw angle of center of mass can be reduced by 0.1 rad/s and 0.01 rad, respectively, and the yaw speed and the side yaw angle of center of mass can be reduced by 0.12 rad/s and 0.013 rad at low speed, which can effectively improve the vehicle stability. References | Related Articles | Metrics

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Exploration of Intrinsic Safety Strategies for Battery Pack Assembly of New Energy Vehicles WANG Qingyuan 2024, 49(20): 9-13.  DOI: 10.16638/j.cnki.1671-7988.2024.020.002 Abstract ( )   PDF (2482KB) ( )   With the rise of new productive forces, the popularity of new energy vehicles is increasing and the importance of battery safety is becoming more prominent. The risk level during the battery pack assembly process is much higher than after installation and how to ensure the intrinsic safety of the battery pack assembly production process is a crucial issue that all car manufacturers need to focus on. This article takes the battery assembly accidents in the past five years as samples from the global events reporting tool of the author's company. It summarizes the main types of power battery assembly accidents and analyzes the reasons for accidents during the battery packaging process. Based on two typical accident cases, this article discusses and proposes design improvements from the perspectives of assembly process technology and the product (battery pack) itself, aiming to achieve intrinsic safety of operations, equipment and products as much as possible during the production process. References | Related Articles | Metrics

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A Brief Talk on the Integrated Development Path of Photovoltaic Energy and New Energy Vehicle LIU Zhongping 2024, 49(20): 14-18.  DOI: 10.16638/j.cnki.1671-7988.2024.020.003 Abstract ( )   PDF (547KB) ( )   Photovoltaic energy is a kind of new energy which converts solar radiation energy into electric energy based on photovoltaic effect. It has the advantages of no pollution, no noise, low maintenance cost and long service life, in recent years has been rapid development. Under the "carbon peak, carbon neutral" strategic background, it is necessary to study the application of photovoltaic energy to new energy vehicles (taking battery electric vehicles as an example) to improve the endurance of new energy vehicles, solve energy problems and protect the environment. References | Related Articles | Metrics

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Fault Diagnosis and Analysis of New Energy Commercial Vehicle Wiper Not Working LU Zirang, LU Ao, ZHANG Hang 2024, 49(20): 19-23,52.  DOI: 10.16638/j.cnki.1671-7988.2024.020.004 Abstract ( )   PDF (3978KB) ( )   The purpose of this study is to explore the failure reasons of new energy commercial vehicle wiper not working, and put forward an effective fault diagnosis method. Using the method of combining theory and practice, through the in-depth analysis of the working principle of the wiper device, combined with the real car fault cases, the key factors that may lead to the failure of the wiper are identified. It is found that circuit failure and motor damage are the main reasons. In order to solve this problem, the fault diagnosis process and preventive measures are put forward. The results of this study are of great significance for the maintenance and troubleshooting of new energy commercial vehicle wiper devices, and provide theoretical support and practical guidance for improving the safety and reliability of new energy commercial vehicles. Based on the diagnostic results, corresponding maintenance suggestions and conclusions are given, and powerful technical support and solutions are provided for maintenance personnel. References | Related Articles | Metrics

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Current Development Status and Countermeasures for Methanol Vehicles LI Junbo, LIU Yong 2024, 49(20): 24-27.  DOI: 10.16638/j.cnki.1671-7988.2024.020.005 Abstract ( )   PDF (605KB) ( )   Methanol vehicles, as a new type of energy vehicle, have advantages such as low-carbon environmental protection and abundant resources. In order to better understand and promote methanol vehicles, this paper introduces the current development status of the methanol vehicle industry from the product characteristics of methanol fuel, policy standards for methanol vehicles, and practical applications of methanol vehicles. It analyzes the advantages of developing methanol vehicles at present, elaborates on the difficulties and shortcomings faced in development, and proposes countermeasures and suggestions to promote the development of the methanol vehicle industry from five aspects, providing reference for the subsequent development of the methanol vehicle industry. References | Related Articles | Metrics

Intelligent Connected Vehicle

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Research on the Application of PKI System in Remote Control of Heavy-duty Commercial Vehicles LI Weijin, ZHANG Ben, LIANG Yuan, FAN Chaopeng, WANG Hongbao 2024, 49(20): 28-32.  DOI: 10.16638/j.cnki.1671-7988.2024.020.006 Abstract ( )   PDF (937KB) ( )   With the continuous development of intelligence and connectivity in heavy-duty commercial vehicles, vehicle remote control, wireless data transmission and other functions are becoming increasingly popular. However, this trend also brings about security concerns such as malicious manipulation and remote theft of vehicles. To reduce the potential information cybersecurity risks associated with remote control functions in heavy commercial vehicles, this study delves into the application of public key infrastructure (PKI) system. A set of processes for digital certificate issuance, control command issuance, and execution result uploading are formulated. Leveraging the security features of PKI system such as confidentiality and non-repudiation, it ensures the confidentiality, authenticity, and integrity of data communication between the vehicle's telematics device and the cloud service platform. This research provides valuable insights into enhancing the security of remote control functions in heavy-duty commercial vehicles. References | Related Articles | Metrics

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Research on the Development Status and Future Trend of Vehicles Intelligent Cockpit System Technology Based on Driving Safety Requirements GENG Zhan1 , XIAO Feiyun2 , MA Yanshu*2 2024, 49(20): 33-38.  DOI: 10.16638/j.cnki.1671-7988.2024.020.007 Abstract ( )   PDF (4192KB) ( )   With the development of electronic information technology and intelligent networked vehicles, the vehicles cockpit has gradually evolved from a traditional form that can only realize the most basic functions of vehicles to an intelligent leisure and entertainment workplace that can expand vehicle performance and meet the material and spiritual needs of passengers. At present, vehicles cockpit technology has been widely used in intelligent driving, audio-visual entertainment, intelligent seats and other aspects, but there is still a lack of in-depth research and technical breakthroughs on how to improve the safety of vehicle driving and control of various functions. By comparing various key hardware and software components and interaction technologies of automotive intelligent cockpit, this paper expounds the implementation methods and development status of the existing cockpit system technology, lists various technical characteristics and conducts safety analysis based on working principles, proposes improvement measures in the field of humancomputer interaction, and predicts the development trend of automotive intelligent cockpit system based on driving safety requirements. It has certain research value for improving vehicle safety and intelligent cockpit reliability. References | Related Articles | Metrics

Design and Research

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Research on the Mechanism of Braking Instability of Semi-trailer Combinations on Split-mu Road HENG Weiwei, ZHANG Zhiyong* , JIANG Zhenfei 2024, 49(20): 39-45,80.  DOI: 10.16638/j.cnki.1671-7988.2024.020.008 Abstract ( )   PDF (1800KB) ( )   To study the braking instability mechanism of semi-trailer combinations on the split-mu 19% and 9%, respectively. In wet conditions, the colored road exhibits higher adhesion coefficient than the asphalt road and split-mu road by 1.4%. The simulation result indicates that, the max articulation angle ψm and max yaw rate difference ωm of the semi-trailer combination positively correlated with braking force and vehicle speed, while their peak values negatively correlated with the load. The sensitivity of both ψm and ωm to braking force is higher than to vehicle speed. On split-mu roads, the yaw rate difference and folding angle of the vehicle exhibited premature "sudden changes", increasing the risk of lateral instability. This study provides valuable insights into exploring the adhesion coefficient characteristics of split-mu roads and have positive implications for improving the safety of semi-trailer combinations on split-mu roads. road with colored-asphalt sections, and to improve the driving safety of semi-trailer combinations, a test is conducted to analyze the characteristics of the adhesion coefficient on split-mu roads. A five-degree-of-freedom semi-trailer combination model is established, and simulations are performed to analyze the braking stability of the semi-trailer combination on split-mu roads and the influencing factors. The adhesion coefficient test result shows that, under dry conditions, the adhesion coefficient of the asphalt road is higher than that of the colored road and split-mu road by References | Related Articles | Metrics

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Structural Design and Operating Feel Optimization of Automotive Rotary E-shifter WANG Xiaosheng1 , LING Ying2 , Pan Yijing2 2024, 49(20): 46-52.  DOI: 10.16638/j.cnki.1671-7988.2024.020.009 Abstract ( )   PDF (2869KB) ( )   At present, the market share of E-shifter products is not high, and the technical competitiveness is weak. To this end, take the research and development process of knob type E-shifter used in new energy models as an example, explain its functional principle, structural design scheme, and the design process of knob operating torque and operating feel. In the design of knob operating torque, because the friction torque is difficult to be estimated accurately, a method of fuzzy theory design with multi-type springs physical verification is proposed. The measured results meet the design requirements, this method could effectively reduce the difficulty and development time. Finally, the research experience of similar products is summarized from the selection of feel scheme, reducing friction torque, shock vibration, etc., which provides a reference for the structural design and optimization of similar products. References | Related Articles | Metrics

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Application of a High Pressure Storage Hydraulic Power Braking System in Commercial Vehicles ZHOU Changhui, LIU Xiaoyun, YU Jinxia 2024, 49(20): 53-57.  DOI: 10.16638/j.cnki.1671-7988.2024.020.010 Abstract ( )   PDF (1258KB) ( )   In order to get rid of the restrictions of vacuum source, vacuum degree and air pressure, this paper proposes a high pressure storage hydraulic power brake system instead of the traditional vacuum booster. Then through the theoretical calculation and verification of the high pressure storage hydraulic power brake system for brake selection in a commercial light truck vehicle, replacing the original vacuum booster for real vehicle restructuring, debugging and matching. Finally, the braking performance is tested. The results show that the system is superior to the vacuum booster in braking performance and pedal feeling, and supports large tonnage load above 4.5 t. Through theoretical analysis and real vehicle restructuring test, the results are in line with expectations and have certain engineering application value. References | Related Articles | Metrics

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Power Optimization and Matching of a Light National VI CNG Bus ZHANG Chuanliang 2024, 49(20): 58-62.  DOI: 10.16638/j.cnki.1671-7988.2024.020.011 Abstract ( )   PDF (2186KB) ( )   Although the natural gas vehicle has good emission and economy, it also has the defect of insufficient power, which affects the market promotion and application of the vehicle. In order to solve the problem of insufficient power of compressed natural gas (CNG) bus, on the basis of not changing the original engine structure, firstly, by adjusting the engine jet pressure and ignition advance angle, the engine power and torque loss are reduced as much as possible. Then, the engine is mounted on a light passenger model, and the gas system is arranged through reasonable design. Finally, the vehicle simulation software AVL Cruise is used to establish a dynamic simulation model to match the optimal combination of transmission and rear axle speed ratio. After the actual road test verification, the power of CNG vehicle can reach more than 90% of similar gasoline engine models, which can meet the actual use needs of users. References | Related Articles | Metrics

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Vehicle-mounted Pedestrian Location Perception Method Based on Improved YOLOv5s QI Junjie1 , WANG Yang2 , XU Kefei 2024, 49(20): 63-68.  DOI: 10.16638/j.cnki.1671-7988.2024.020.012 Abstract ( )   PDF (1884KB) ( )   To address the issues of low accuracy and difficulty in achieving tracking localization in current vehicular binocular vision systems, a pedestrian localization and tracking method based on improved YOLOv5s is proposed in this study. Target localization and tracking functionalities are designed in the binocular vision-based YOLOv5 object detection network. Additionally, a Transformer-based adaptive fusion attention mechanism is incorporated into the main network to enhance target feature representation. The network structure of the feature fusion module is modified to improve fusion accuracy. The improved YOLOv5s model is named YOLOv5sBCT, which exhibits approximately 4.20% enhancement in precision and about 2.91% improvement in mAP@0.5:0.95 compared to the baseline YOLOv5s model. Furthermore, the measured distance error rate is reduced by approximately 6.19%. Consequently, this study provides an effective method for enhancing pedestrian tracking localization accuracy in vehicular intelligent systems, thereby enhancing driver safety and driving performance and promoting advancements in the field of intelligent transportation. References | Related Articles | Metrics

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Design and Modal Analysis of Automotive Rearview Mirrors WANG Jian, GUO Chunhong 2024, 49(20): 69-72.  DOI: 10.16638/j.cnki.1671-7988.2024.020.013 Abstract ( )   PDF (1472KB) ( )   The design of automotive rearview mirrors directly affects the driving safety of the automotive. In order to standardize the design of automotive rearview mirrors and provide corresponding references for subsequent rearview mirror design, this article introduces the design requirements of rearview mirrors from several aspects, including material selection, surface treatment process, mirror body arrangement angle, field of view requirements, and clearance requirements for internal components of rearview mirrors. At the same time, this article outlines that the rearview mirror also needs to meet the corresponding physical experiments to verify the robustness of its design. In addition, regarding the common failure modes of rearview mirror shaking, this article uses commonly used finite element analysis software HyperMesh and ABAQUS to conduct modal analysis. Through calculation, the vertical modal frequency of the rearview mirror is 45.6 Hz, which is much higher than the vibration frequency of the car engine. It can be determined that this rearview mirror is not produce resonance noise, and the design of the rearview mirror meets the requirements of the company. References | Related Articles | Metrics

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Transmission Noise Control Based on Equivalent Radiated Power and Topography Optimization YIN Jinju, WEN Xinhai, ZHANG Lei 2024, 49(20): 73-76.  DOI: 10.16638/j.cnki.1671-7988.2024.020.014 Abstract ( )   PDF (1497KB) ( )   Aiming at the problem of the transmission 3 gear whistling, firstly, the equivalent radiated power of the transmission is analyzed and combined with modal analysis in this paper, and the weak areas of parts that do not meet the design requirements are accurately located. Then the topography is optimized to improve its stiffness, and the optimal structure design is obtained. Finally, through comparative analysis, it is found that the optimized design greatly reduces the noise of equivalent radiation power, thus reduces the noise of transmission. This analysis method can effectively guide the optimization design of transmission housing and reduce transmission noise. References | Related Articles | Metrics

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Research on Design and Evaluation Method of Commercial Vehicle Seat Comfort CHEN Weiwei, XIA Pan, ZHU Chong 2024, 49(20): 77-80.  DOI: 10.16638/j.cnki.1671-7988.2024.020.015 Abstract ( )   PDF (1770KB) ( )   The seat comfort of commercial vehicle has always been a concern of seat designers and users. Starting from seat ride comfort, this paper introduces how to improve seat ride comfort in the design process by defining key dimensions of seat cushion and backrest, foam performance parameters, and checking operation space. Moreover, static and dynamic comfort evaluation is carried out on the first trial production sample chair, and whether the key dimensions and foam performance parameters of the seat need to be revised according to the evaluation results. Finally, it is pointed out that the design and test complement each other, improve the development efficiency of seat comfort, and avoid repeated changes in the later development work. References | Related Articles | Metrics

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Design Research of SAB in 2024 C-NCAP GAO Zhongkuo, XIE Yuying, QIAN Yong 2024, 49(20): 81-84.  DOI: 10.16638/j.cnki.1671-7988.2024.020.016 Abstract ( )   PDF (2011KB) ( )   The seat side air bag (SAB) can effectively reduce the degree of chest and abdomen contusion in side collision, and the 2024 version of China-new car assessment program (C-NCAP) has more stringent requirements for the development of SAB. Focusing on the change point and regular performance improvement requirements of 2024 C-NCAP, this paper uses simulation analysis method to analyze the influence of air bag type and folding mode on SAB performance, and carries out simulation benchmarking of parts and systems after optimization of SAB. It is confirmed that changing the SAB design can effectively improve the arm lifting posture of the dummy in the system simulation model, reduce the damage index of the dummy, and finally verify the improvement of the protection effect through the real car, which has a certain guiding role for the design and development of the SAB in the subsequent project. References | Related Articles | Metrics

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Failure Analysis and Optimization of a Light Bus's Rear Suspension Breakdown GONG Guancheng 2024, 49(20): 85-88.  DOI: 10.16638/j.cnki.1671-7988.2024.020.017 Abstract ( )   PDF (1604KB) ( )   This article is to solve the problem of a light bus body being broken down, the fishbone diagram method is used to track that the failure, with compute aided engineering (CAE) simulation technology to deep dive failure mechanism. This article reflects the suspension jump is too small, leads to the failure of the body longitudinal beam due to insufficient buffer. Though this article come up with adding the reinforcing plate, which make the balance of the engineering feasibility and best cost-efficiency. The improvement makes the body strength meet the design requirements, and the samples are performing well during the durability test, with no failure occurred. This article combines the fishbone diagram and CAE simulation, address the issue exactly, optimize the body structure with high efficiency, finally fixed the risk of failure risk, verified the effectiveness and practical credibility, offered a well reference for the same type of issues solution. References | Related Articles | Metrics

Process·Materials

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Standardized Layout Method of Pipeline Harnesses for Medium and Heavy-duty Commercial Vehicles YANG Zhongyuan 2024, 49(20): 89-92.  DOI: 10.16638/j.cnki.1671-7988.2024.020.018 Abstract ( )   PDF (4006KB) ( )   Standardized layout of pipeline harnesses for medium and heavy-duty commercial vehicle can reduce the risk of wear and failure, improve safety and reliability. This paper analyzes the necessity of standardized layout of pipeline harnesses for medium and heavy-duty commercial vehicles, and discusses the method and solution of standardization layout. This method is based on the logic and rationality of pipeline harnesses layout, taking into account factors such as vehicle structure, functional modules, and wiring requirements. After practical application and debugging, the standardized layout method has achieved significant results in improving the efficiency of pipeline harnesses layout, reducing failure rates, and enhancing vehicle performance. This method can help commercial vehicle manufacturing enterprises to improve the standard level of pipeline harnesses layout, which can provide reference for research and practice in related fields. References | Related Articles | Metrics

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Design of Powder Metallurgy Forming Mold for the Gear Hub of Certain Transmission Synchronizer XU Yonggang1,2 , LI Qiang1,3, ZHENG Haichao1,3 , LI Zhen1,3 , ZHOU Xin1,3, LIU Bin1,2 2024, 49(20): 93-97.  DOI: 10.16638/j.cnki.1671-7988.2024.020.019 Abstract ( )   PDF (2687KB) ( )   Design a synchronizer hub forming mold based on the structural characteristics of a certain gearbox synchronizer hub and the principle of equal forming speed and forming rate in powder metallurgy mold design. Design the forming die using variable modulus design method, ropose a design scheme for forming the core rod for the positioning hole, and establish a mold assembly diagram based on the designed mold diagram, and analyze the feasibility of the mold design scheme. Verify the rationality of the forming mold design through mold installation experiments. The results show that the trial production of the gear hub meets the requirements of the automotive company in terms of size, accuracy, and functionality through processes such as shaping and sintering, and successfully achieves cost reduction and efficiency improvement, as well as the development of synchronous gear hub forming molds. References | Related Articles | Metrics

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Design Improvement and Application of a Universal Body-in-white Gluing and Laminating Device for Multiple Vehicle Models FANG Xiaonan, WEN Yun, DENG Fang, JIANG Chuanyu 2024, 49(20): 98-101.  DOI: 10.16638/j.cnki.1671-7988.2024.020.020 Abstract ( )   PDF (1415KB) ( )   As automobile manufacturing tends to be customized and the number of models continues to increase, the improvement of adaptive gluing and laminating devices has become crucial, and it is necessary to consider the on-site process requirements and the flexibility of tooling to improve efficiency and reduce costs, while ensuring the quality of products. This paper introduces the design of a multi-vehicle flexible gluing and laminating device, which can facilitate the operation of field staff and improve the gluing efficiency and quality of different types of body-in-white. The unit consists of an adjustable roller mechanism with hidden threads and a press handle with an adjustable angle, which can be adapted to the operation of different sizes of rubber diameter, ensuring body tightness and noise, vibration and harshness (NVH). Especially in the small batch mixed line production in the trial production stage of new models, it provides an innovative portable solution that can be adjusted quickly, while improving production efficiency and glue consistency. Compared with existing manual tooling, the number of tooling accessories required can be significantly reduced, and management costs are also reduced. References | Related Articles | Metrics

Automobile Education

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Design and Practice of Ideological and Political Education Mode for Automotive Body Electronic Control Technology Course ZHANG Junna 2024, 49(20): 102-106.  DOI: 10.16638/j.cnki.1671-7988.2024.020.021 Abstract ( )   PDF (1018KB) ( )   The ideological and political education in vocational college courses has not yet formed an effective force for educating students. This article explores in depth the ideological and political education mode of Automotive Body Electronic Control Technology courses, forming a synergy between professional courses and ideological and political courses, and implementing the fundamental task of moral education, designs the overall framework, teaching implementation process, and course evaluation of ideological and political education in the Automotive Body Electronic Control Technology course. At the same time, this article proposes a "one center, two main lines, three platforms, and four integrations" model of ideological and political education in the course, constructs a new path of ideological and political education of "online and offline+ in class and out of class", deepens teaching method reform, focuses on promoting the quality and efficiency of ideological and political education in professional courses, and cultivates composite and innovative skilled applied talents, in order to provide useful references for the construction of professional courses in vocational colleges. References | Related Articles | Metrics

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Research on Teaching Mode of Introduction to Economics and Management of Automobile Engineering ZENG Rong1 , LI Suhua1 , ZENG Fancong1 , GUO Zhu2 2024, 49(20): 107-111.  DOI: 10.16638/j.cnki.1671-7988.2024.020.022 Abstract ( )   PDF (1151KB) ( )   In order to cultivate applied talents and improve the autonomous learning ability and innovation ability of engineering students, the teaching mode of Introduction to Automotive Engineering Economics and Management is reestablished through the research of mixed teaching and project-based teaching. Use new information and artificial intelligence technologies to establish online courses, develop teaching resources, and adopt mixed online and offline teaching. At the same time, taking engineering practical problems as teaching items, carrying out project-based teaching, taking students as the center, increasing students' participation and developing college students' innovative thinking. This mode takes mixed teaching as the form and project teaching as the key, which improves students' learning enthusiasm and changes their learning thinking mode. The results show that this model is more scientific, effective and easy to implement. Students can actively participate in classroom projects, have a deeper understanding of theoretical knowledge, and can apply knowledge to solve practical engineering problems, which improves students' application ability and innovation ability, and conforms to the requirements of new engineering talents training. References | Related Articles | Metrics

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The Teaching Practice of Flipped Classroom in the Course Experiment on Automobile Maintenance Engineering LIU Zhenbo, LIN Muyi, HUO Weiwei 2024, 49(20): 112-115.  DOI: 10.16638/j.cnki.1671-7988.2024.020.023 Abstract ( )   PDF (1078KB) ( )   In order to explore a way that meets the characteristics of practical teaching of the new engineering vehicle engineering major in "accelerating the educational reform in the information age", this new teaching method of flipped classroom is adopted to carry out teaching design and practice based on an experiment in the course of automotive maintenance, starting from the characteristics and actual situation of the students majoring in automobile maintenance engineering at our university. It makes students better grasp the experimental knowledge points that need to be learned and also provides a new idea for further developing practice teaching reform of this major. References | Related Articles | Metrics

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Exploring the Teaching Model of Using Formula Racing Practice to Promote Automotive Theory Learning LI Zhen, KANG Zhengyang, MIAO Xiaodong, LIU Rui, XU Kun 2024, 49(20): 116-119.  DOI: 10.16638/j.cnki.1671-7988.2024.020.024 Abstract ( )   PDF (1312KB) ( )   In order to adapt to the development of the economy and society and implement the significant national strategies regarding talent development, cultivating practical and highly skilled talents is an important task of higher education. This article, based on the Formula Student Racing project for college students and focusing on automotive theory teaching, explores the deep integration of practice and theory in education. Firstly, the background and significance of the Formula Student Racing project are introduced, highlighting its importance in fostering students' teamwork, problem-solving, and innovation skills. Subsequently, a detailed analysis is conducted on how to integrate automotive theory knowledge with Formula Student Racing practice, proposing three teaching modes: classroom teaching, practical training, and competition practice. Finally, the positive impacts of this model on enhancing students' comprehensive qualities and competitiveness in employment, as well as the potential and challenges in cultivating practical talents, are summarized. References | Related Articles | Metrics

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Research on the Talent Cultivation Mode of Automotive Electronic Technology Based on the CDIO Concept HAO Zhikuan1 , WANG Guodong1 , ZHANG Qingrong1 , LI Xiaoxin1 , YANG Hao2 2024, 49(20): 120-123.  DOI: 10.16638/j.cnki.1671-7988.2024.020.025 Abstract ( )   PDF (1086KB) ( )   In recent years, with the rapid progress of the automotive industry, intelligence, electrification, networking, and automation have become the four core trends of automotive technology innovation. Against this backdrop, automotive electronic technology has become particularly important, serving as a crucial technological point supporting the development of automotive technology. This article delves into the difficulties and challenges encountered by local applicationoriented undergraduate colleges in cultivating outstanding automotive electronic engineers, and explores strategies to address these issues. Taking the practice of Chongqing College of Mobile Telecommunications in cultivating outstanding automotive electronic engineers as an example, this study elaborates on the training mode of outstanding automotive electronic engineers based on the innovative concept of conceive-design-implement-operate (CDIO). The research results indicate that this talent cultivation mode based on the CDIO concept can effectively enhance the quality of education, significantly improving students' employment rate and professional satisfaction. References | Related Articles | Metrics

Standards·Regulations·Management

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Research on the Value Evaluation of Battery Electric Second-hand Car Based on Improved Replacement Cost Method MING Jianping, OUYANG Ronghua 2024, 49(20): 124-128.  DOI: 10.16638/j.cnki.1671-7988.2024.020.026 Abstract ( )   PDF (1386KB) ( )   Due to the large differences between battery electric vehicles and traditional fuel vehicles in the main structure and the proportion of the value, traditional fuel vehicle second-hand car price evaluation method is not fully applicable to battery electric second-hand car. Comparing the characteristics of current market method and replacement cost method, the replacement cost method is selected as the evaluation method. The evaluation model is modified according to the actual technical condition of battery electric second-hand car, and the comprehensive coefficient is adjusted according to seven factors such as nominal mileage. The feasibility and effectiveness of the evaluation method are verified by practical cases, and the research results have important guiding significance for the value evaluation of battery electric second-hand car. References | Related Articles | Metrics

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Research on the Management Mode of Technology Development Projects in the Automotive Industry HU Yuan 2024, 49(20): 129-134.  DOI: 10.16638/j.cnki.1671-7988.2024.020.027 Abstract ( )   PDF (1113KB) ( )   When the automotive industry enters the era of intelligent electric vehicles, the car companies are no longer just simple integrators, they hope to define the system, and focus on key technologies to achieve value-added. In view of the changes in the technology development of car companies, this paper expounds the definition and difference of vehicle development process and technology development process. Technology development process is divided into technology innovation process and technology platform process according to development content and output. This paper discusses the development characteristics of the two, and introduces the key points of technology development projects in the areas of pure electric platform, power battery and intelligent driving, aiming to provide references for the management of technology development project, and improve the independent ability and product competitiveness of car companies. References | Related Articles | Metrics

Reviews

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Analysis of High-quality Development Paths for Xi'an's Automotive Industry from the Perspective of Industrial Chain Coordination LI Haige, MU Qiankun, LI Pengwei 2024, 49(20): 135-141.  DOI: 10.16638/j.cnki.1671-7988.2024.020.028 Abstract ( )   PDF (1031KB) ( )   The automotive industry, as a pillar of the national economy, is currently facing challenges from global technological transformations and intensified competition. This paper analyzes the current state of Xi'an's automotive industry from the perspective of industrial chain coordination and proposes pathways for high-quality development. The research findings indicate that while Xi'an's automotive industry shows a promising development trend, there is a need to increase R&D investment, strengthen coordination between upstream and downstream enterprises, optimize policy support, and attract and develop high-level professional talent to enhance overall competitiveness. The study provides policy recommendations and implementation strategies for both government and enterprises. References | Related Articles | Metrics

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Discussion on the Design Specification Requirements for Rear Brake Calipers LI Ning, ZHANG Lili, WANG Xinhua, XU Chonghui, ZHANG Mingjie, LI Wenzhong, LI Zhenxing 2024, 49(20): 142-145152.  DOI: 10.16638/j.cnki.1671-7988.2024.020.029 Abstract ( )   PDF (1706KB) ( )   This paper briefly introduces the requirements of rear brake caliper design specification, and optimizes the process of rear brake caliper design under meeting the regulatory requirements. By combining the vehicle performance parameters with the rear brake caliper design, the rear brake caliper design strategy is formulated, and the key technical parameters and materials are obtained during the test of designing the rear brake caliper. Finally, by computer aided engineering (CAE) analysis, under 16 MPa hydraulic pressure, the static strength of the brake caliper is 280.6 MPa and the stiffness is 0.254 mm. Through the CAE analysis of R127.8 bracket, the static strength and stiffness of 10 MPa are 302.9 MPa and 0.298 mm, which provides a valuable reference for the design and optimization of rear brake calipers in the automobile industry. References | Related Articles | Metrics

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Future Outlook of Intelligent Headlights Based on Multi-sensor and High-precision Map ZHEN Junwei1 , ZHAI Weiliang1 , SHI Dongsheng2 2024, 49(20): 146-151.  DOI: 10.16638/j.cnki.1671-7988.2024.020.030 Abstract ( )   PDF (2706KB) ( )   With the rapid development of automotive electronics technology and autonomous driving technology, this paper explores the possibility and prospect of fusion development of these three fields by analyzing the multi-sensor situation, the development of high-precision map, and the current situation of intelligent headlights, the fusion technology can improve night driving safety and automatic driving accuracy. It reasonably predicts the development trend of sensor technology and high-precision map technology in the field of headlights, and discusses the role of intelligent headlights in autonomous driving. This study can provide an effective reference for the development and application of intelligent headlights. References | Related Articles | Metrics