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09 January 2025, Volume 50 Issue 1 Previous Issue   
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New Energy Vehicle
Intelligent Connected Vehicle
Design and Research
Testing and Experiment
Process·Materials
Use and Maintenance
Automobile Education
Reviews


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New Energy Vehicle

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Lithium-ion Battery Health State Estimation Based on LSTM Neural Network ZHANG Xiaofan1 , CHEN Yilong*1 , LI Shengqian2 , ZENG Xiangkun1 , LIAN Xin1 , HUANG Cheng3 2025, 50(1): 1-6.  DOI: 10.16638/j.cnki.1671-7988.2025.001.001 Abstract ( )   PDF (994KB) ( )   Battery state of health (SOH) is an important parameter to characterize battery performance, and accurate SOH estimation is important for battery management and maintenance. The aim of this study is to build a battery SOH estimation model using a long-short-term memory (LSTM) neural network, and to obtain the best model accuracy under different iteration numbers. In this paper, real-time battery operation data are first collected and cleaned and filtered. Then, constant-current charging time, constant-voltage charging time and average discharge voltage are selected as feature indicators to predict the battery health state. By comparing and analyzing the real and predicted values of the three batteries, and the values of mean absolute percentage error (MAPE), root mean square error (RMSE), mean absolute error (MAE) and relative error (RE) evaluation indexes, the accuracy of the three battery models is obtained to be above 98%. The experimental results show that the SOH estimation algorithm based on LSTM has accuracy and feasibility. References | Related Articles | Metrics

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Integration and Research of Intelligent Comprehensive Thermal Management Control System for Bus Based on Fuel Cell WANG Haitao 2025, 50(1): 7-12.  DOI: 10.16638/j.cnki.1671-7988.2025.001.002 Abstract ( )   PDF (1079KB) ( )   In order to solve the problem of high energy consumption of single electric heating system of fuel cell bus and reduce heat loss, an integrated intelligent comprehensive heat management control strategy for the whole vehicle is proposed based on the traditional distributed heat control strategy of fuel cell engine of hydrogen fuel bus. The heat generated by the fuel cell engine during operation is recycled, and the heat is fully converted by plate-fin heat exchanger and used for heating in passenger cabin and defrosting and defogging of front windshield. Realize high integration and fine thermal management. This technology can reduce the energy consumption of a single electric heating system, improve the heating comfort experience of the whole vehicle and greatly improve the economic performance of the whole vehicle. References | Related Articles | Metrics

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Optimization of Lithium-ion Battery Charging Stategy Based on Evolutionary Algorithm ZHONG Yingqun1 , LIU Jing2 , ZHENG Pei*1 2025, 50(1): 13-19.  DOI: 10.16638/j.cnki.1671-7988.2025.001.003 Abstract ( )   PDF (1045KB) ( )   To improve battery performance, it is critical to investigate specifying advanced charging strategies. Based on the differential evolution algorithm, a multi-stage constant current charging strategy considering battery life and charging efficiency is proposed. Firstly, combining the external characteristics and internal mechanism of lithium-ion batteries, the coupling model of electrical, thermal and life is established. Secondly, according to the above coupled model parameters, the optimization equation aiming at the service life and charging speed is further constructed. Finally, the differential evolution algorithm is used to determine the optimal charging current in each constant current segment. Developing a safe and fast charging strategy that meets consumer needs is not only conducive to the promotion and popularization of electric vehicles, but also contributes to the long-term sustainable development of the country. References | Related Articles | Metrics

Intelligent Connected Vehicle

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Research on Driving Style Recognition Based on NGSIM KANG Yu1 , ZHAO Jianyou1 , ZHAO Yang2 , SUN Zhanli3 2025, 50(1): 20-24,64.  DOI: 10.16638/j.cnki.1671-7988.2025.001.004 Abstract ( )   PDF (1055KB) ( )   This article focuses on identifying driving styles among different drivers. Firstly, the NGSIM dataset is smoothed by symmetrical exponential moving average filtering algorithm. Secondly, by analyzing key indicators from domestic and international studies on characterizing driving styles, eight driving style feature variables are determined. The independence of these eight features is validated by calculating the rank of the driving style feature vector. Combining principal component analysis, three variables that characterize driving styles are identified. Then, the KMeans++ model is constructed to cluster driving styles into aggressive, moderate, and cautious types.For comparison and validation, K-means and gaussian mixture module (GMM) models are also established. The results show that the silhouette coefficient and algorithm runtime of the K-Means++ model are superior to those of the K-Means and GMM models. The driving style clustering method proposed in this paper can effectively classify the driving style of drivers, which is of great significance for improving traffic safety, traffic efficiency and promoting the development of intelligent transportation system. References | Related Articles | Metrics

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A Behavioral Decision-Making Method Based on Improved Deep Reinforcement Learning Algorithms JIA Ruihao 2025, 50(1): 25-30.  DOI: 10.16638/j.cnki.1671-7988.2025.001.005 Abstract ( )   PDF (887KB) ( )   Aiming at the traditional deep reinforcement learning algorithms' problems of simultaneous low driving efficiency, slow convergence and low decision success rate in self-driving decisionmaking tasks due to poor exploration strategies during training, a decision-making method of deep competitive double Q network combined with expert evaluation is proposed. An offline expert model and an online model are proposed, and an adaptive balance factor is introduced between them; a prioritized experience replay mechanism with adaptive importance coefficients is introduced to build an online model on the basis of the competitive deep Q-network; and a reward function that considers driving efficiency, safety, and comfort is designed. The results show that the algorithm improves the convergence speed by 25.93% and 20.00%, the decision success rate by 3.19% and 2.77%, the average steps by 6.40% and 0.14%, and the average speed by 7.46% and 0.42%, respectively, compared with D3QN and PERD3QN. References | Related Articles | Metrics

Design and Research

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Vehicle Modeling and Simulation Based on ADAMS LI Qian1 , LIU Wei1 , CHEN Zeliang2 , LI Hang1 , HUANG Dong*2 , WEI Jianfeng3 2025, 50(1): 31-36,51.  DOI: 10.16638/j.cnki.1671-7988.2025.001.006 Abstract ( )   PDF (1006KB) ( )   In this paper, the stiffness, power and friction parameters of a vehicle steering system are extracted by bench test, and the parameters are built into the corresponding model and input into the steering system model. Then, three typical operating conditions of steady turning with fixed radius, steering wheel angle step and central steering are studied by simulation and experiment. The results show that the simulation model with accurate modeling can predict each evaluation index more accurately, and also has higher prediction accuracy for the test results of steering wheel torque. The ADAMS/Car model is exported to VI-CarRealTime model by add-on, and the establishment method of the VI-CarRealTime rack and pinion model is described in detail. The calibration accuracy of VI-CarRealTime and ADAMS/Car model is further verified by building a rack and pinion model. In this study, the modeling and simulation methods of the steering system are deeply discussed, and good prediction accuracy is obtained in the experimental verification. It is of great significance to improve the accuracy and efficiency of vehicle steering system design, and provides a valuable reference for research and practice in related fields. References | Related Articles | Metrics

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Automotive Software Use Cases Development Based on Pairwise Testing XUE Hongmei 2025, 50(1): 37-41.  DOI: 10.16638/j.cnki.1671-7988.2025.001.007 Abstract ( )   PDF (859KB) ( )   To ensure the test coverage and improve the test efficiency, this paper studies the use case development of automotive software by applying the pairwise testing method. Using voice assistant to play music as an example, this paper first analyzes the user's usage scenario and usage habits, identifies the possible factors and levels. Then uses automated tools to generate typical test cases and define the expected behavior of each use case. Next, the test results of each use case are obtained by comparing the actual behavior and the expected behavior. Finally, according to the test results, the failure rate of each combination of each two factors is calculated, and the response table is obtained. If defects are found in the response table, the software should be optimized and be tested again until there are no defects in the response table. Through the detailed illustration of the example, the function and value of the pairwise testing method in the automotive software testing has become an important help to improve the testing coverage and efficiency. References | Related Articles | Metrics

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Improve of the Roof Crush Resistance Structure Based on Panoramic Roof LU Tao, LIU Yi, SONG Yongle 2025, 50(1): 42-45.  DOI: 10.16638/j.cnki.1671-7988.2025.001.008 Abstract ( )   PDF (1460KB) ( )   The body structure is the cornerstone of safety and has an important impact on safety performance. In the design, it is necessary to consider the balance of ergonomics and safety, but also to consider the need for cost and lightweight. As an important part of the performance, the roof crush resistance has a very high requirement on the structure and materials of the side body. Through the simulation analysis and optimization of roof crush resistance, in order to reach the China-insurance automotive safety index (C-IASI) grade G evaluation standard ,this paper summarizes the design key of the side body with panoramic roof. Combined with the development case of the vehicle, the optimization design of the resistance frame of the side body provides a reference for the design of the structure of the subsequent vehicle. References | Related Articles | Metrics

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Design and Optimization of FSEC Racing Car Wheel Planetary Gear Reducer CHEN Shengxin, JIA Hao, ZHANG Tianqi, HAO Jianmin, ZHAO Maofeng, BAI Hongfei* , LIU Lidong 2025, 50(1): 46-51.  DOI: 10.16638/j.cnki.1671-7988.2025.001.009 Abstract ( )   PDF (3063KB) ( )   In order to improve the transmission efficiency of the formula student electric China (FSEC) racing car under extreme working conditions such as rapid acceleration and cornering, this article introduces the wheel reducer system and its working principle, specific research and calculation are carried out on various design parameters of the system. The research and design of system components and the process of ANSYS static simulation analysis are briefly described. The research results show that the wheel planetary gear reducer operates stably and reliably, is easy to assemble, has a lighter overall weight compared to other transmission methods, and has a higher transmission efficiency. The system will be installed on the No.10 racing car of Liaoning University of Technology wande electric racing car team to verify its design rationality in practice. The research results can provide reference for the design of wheel planetary systems in subsequent racing car, in order to improve the transmission efficiency of racing car, meet the lightweight requirements of racing car, and improve racing car performance. References | Related Articles | Metrics

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Finite Element Analysis and Optimization of a Transmission Accumulator Bracket ZHU Shunli, SUN Chenglong, YANG Long 2025, 50(1): 52-55.  DOI: 10.16638/j.cnki.1671-7988.2025.001.010 Abstract ( )   PDF (1384KB) ( )   Accumulators are an essential part of high-pressure hydraulic systems, and their normal operation is crucial for the transmission to perform functions such as gear shifting and clutch engagement. The accumulator bracket is the device that secures it to the casing. During testing of a transmission prototype, a failure occurred due to the fracture of the accumulator bracket, leading to the malfunction of the transmission's related functions. Through investigation and analysis, it is found to be caused by design reasons. This paper conducts a strength analysis of the accumulator bracket using the finite element method, revealing that there is a risk of fracture failure under extreme conditions. Based on the analysis results, the accumulator bracket is optimized, and a design that meets the requirements is ultimately obtained, which has successfully passed the tests. The analysis methods and optimization ideas mentioned in the text have certain reference value for the design and development, as well as simulation analysis of accumulators. References | Related Articles | Metrics

Testing and Experiment

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Analysis of Automobile Transmission Shaft Structural Reliability Considering Safety Factor HU Quanquan, CHEN Rui, XIAO Junhao, CHEN Qianxu 2025, 50(1): 56-59.  DOI: 10.16638/j.cnki.1671-7988.2025.001.011 Abstract ( )   PDF (1027KB) ( )   Reasonable design and selection of automobile tansmission shaft is very important to ensure the reliability of vehicle power system. Considering the influence of safety factor, the reliability mathematical model of the stress limit state of the transmission shaft is established, and the reliability design theory, first order second moment method (FSOM) and Monte-Carlo simulation (MCS) numerical simulation method are combined to calculate the structural reliability and reliability sensitivity of automobile transmission shaft. Taking a certain type of automobile transmission shaft as an example, the reliability of automobile transmission shaft selection under the influence of safety factor is discussed. The most influential factors of automobile transmission shaft reliability are obtained, which provides an important reference value for the subsequent structural selection and steady optimization design of the automobile transmission shaft. References | Related Articles | Metrics

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Fuel Consumption Optimization Analysis of a Hybrid Commercial Vehicle WU Bin, FANG Lihui, GUAN Wei, CHAI Zhaopeng, ZANG Yungang 2025, 50(1): 60-64.  DOI: 10.16638/j.cnki.1671-7988.2025.001.012 Abstract ( )   PDF (3464KB) ( )   The development trend of new energy for commercial vehicles is obvious. Pure electric and plug-in hybrid electric vehicle (PHEV) models are increasing, hybrid electric vehicle (HEV) commercial vehicle models are less, and HEV commercial vehicle fuel consumption research is less. Based on the high-efficiency engine and 1-speed rear-drive hybrid transmission, this paper develops a hybrid system suitable for light commercial vehicles, and carries the hybrid system on a 3.5 t light commercial vehicle. Through the test method, the fuel consumption performance of the light commercial vehicle is analyzed and optimized on the vehicle test bench. The results show that through the optimization of vehicle control strategy and engine fuel consumption, the fuel consumption of hybrid light commercial vehicle is reduced from 8.9 L/100 km to 8 L/100 km, and the fuel consumption of vehicle is reduced by 10%. Through optimization, the vehicle has reached the development goal. The vehicle control strategy and engine fuel consumption are important factors affecting the fuel consumption of light hybrid commercial vehicles. References | Related Articles | Metrics

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Research on Diagnosis of Abnormal Noise in a Automobile Based on Envelope Analysis FAN Ximin, LI Kai 2025, 50(1): 65-68.  DOI: 10.16638/j.cnki.1671-7988.2025.001.013 Abstract ( )   PDF (1077KB) ( )   In this paper, for the problem of click abnormal noise in a pickup truck at idle speed, using Hilbert transform and envelope analysis methods. By first analyzing the band-pass filtering and envelope of the measured signals, the abnormal noise frequency composition is 800～1 000 Hz and obtaines an excitation frequency of 25 Hz. Then, the noise conforming to the frequency characteristics is checked and the main transmission path is determined to be injector-fuel pipe-pipe clamp-body. Finally, through the analysis, it is considered that the damping pipe clamp is the most simple and easy to use, and the real verification of the scheme is carried out, the click abnormal noise disappears, and the effect is good. References | Related Articles | Metrics

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Research on the Vehicle Durability Test Objectives Based on User Driving Conditions LIU Sutao, CHEN Haijiang, YU Xiaohui, QIU Yu 2025, 50(1): 69-74.  DOI: 10.16638/j.cnki.1671-7988.2025.001.014 Abstract ( )   PDF (2432KB) ( )   As an important part of the vehicle development process, the vehicle structure durability test plays a crucial role in validating and evaluating the vehicle structure and vehicle systems. It is particularly critical to establish durability test objectives that are user-centered and align with actual user use. This article proposes a method for determining vehicle durability test objectives based on user driving conditions. Firstly, user typical driving conditions and the mileage distribution within each condition are obtained using machine learning clustering algorithms based on actual user driving data. Secondly, real vehicle road spectrum loads are collected on public roads to obtain the corresponding load damage under different driving conditions. Finally, the user driving conditions are correlated with the damage objectives of real vehicle road spectrum loads, resulting in durability test damage objectives that are linked to the user. References | Related Articles | Metrics

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Research on Load Spectrum Compilation of the Sub-Frame Rig Test Based on the Road Load Data YANG Jun1,2 2025, 50(1): 75-79.  DOI: 10.16638/j.cnki.1671-7988.2025.001.015 Abstract ( )   PDF (1934KB) ( )   The sub-frame of one light commercial vehicle cracked during the road durability test, based on this problem, acquire the road load data of the ball joint of the control arm, and then calculated the pseudo-damage of the ball joint based on the virtual S-N curve. According to the Miner principle, calculated the whole life damage of the ball joint. Select the appropriate amplitude of the multi-level load spectrum, and get the cycle number of each level of load amplitude according to the principle of damage equivalence. The bench test of sub-frame and control arm is carried out based on the multi-level load spectrum that obtained by damage equivalence calculation, the result of the rig test reproduce the sub-frame crack of the road test, and the failure mode, life of the failure have a good correlation with the road test. The optimized sub-frame passes the bench test with the multi-level load spectrum, and also passes the road durability test. References | Related Articles | Metrics

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Research on System-Level Functional Safety Test Method of Drive Motor QIN Wei, MA Kai, WANG Baosen, WANG Bin, ZHAO Lingxiao 2025, 50(1): 80-84.  DOI: 10.16638/j.cnki.1671-7988.2025.001.016 Abstract ( )   PDF (1690KB) ( )   Electrification, interconnection, sharing and intelligence are the inevitable trends shaping the future of the automobile industry. As a crucial component of the vehicle power system, the electric motor control unit or inverter plays a significant role in ensuring safety. If the MCU malfunctions, it can lead to serious vehicle accidents. Therefore, based on the ISO 26262 standard, this paper utilizes a power hardware-in-the-loop test platform to develop various test cases and scenarios for testing and verifying the controller from a functional safety perspective. Detailed analysis and research are conducted on issues including speed sensor anomalies, motor temperature signal abnormalities, controller area network (CAN) bus failures, and inverter over/under voltage. The findings provide a robust method for verifying the functional safety of the controller. References | Related Articles | Metrics

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Study on Simulation Test of Recovery Travel of Adjustable Damper for Truck Seat Damping ZANG Qingyi, ZHANG Zhongyang, JIANG Xu 2025, 50(1): 85-89.  DOI: 10.16638/j.cnki.1671-7988.2025.001.017 Abstract ( )   PDF (7790KB) ( )   The truck seat damping adjustable shock absorber is a new kind of shock absorber applied to the truck seat suspension and can adjust the damping force manually. In order to shorten the development cycle of this type of shock absorber and reduce the cost input, it is of great significance to study the damping characteristics of the shock absorber. In this paper, SolidWorks software is used to establish the three-dimensional solid model of the shock absorber and the three-dimensional model of the fluid domain under the condition that the damping adjustment hole is fully open. Workbench meshing module is used to mesh the fluid domain model and the equivalent valve plate model, and the fluid-solid coupling contact surface is set up. The transient structure module of Workbench was used to set the solid valve disc, and the boundary conditions of the fluid were set by the ansys fluent module. Through the fluid-structure coupling simulation analysis under the condition that the damping adjustment hole of the shock absorber's recovery stroke is fully open, the stress and deformation of the recovery valve disc at different speed points and the pressure cloud diagram of the flow field are obtained. According to the damping force formula, the damping forces at different velocity points are obtained, and compared with the test results, the correctness of the simulation model is verified. References | Related Articles | Metrics

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Analysis of Chest Rib Deflection Performance Improvement Based on a Specific Vehicle Euro NCAP Side Pole ZHOU Xiaolei, DONG Wei, WANG Ganggang, LI Wenjie,WANG Kun 2025, 50(1): 90-96.  DOI: 10.16638/j.cnki.1671-7988.2025.001.018 Abstract ( )   PDF (3161KB) ( )   This article is based on the overall safety development of a new energy vehicle model Euro new car assessment program (NCAP), to conduct the performance study on the chest deflection problem on the side pole test condition. Through the theoretical research on the chest deflection problem and obtain the relative influence factors. And by using the research method of finite element simulation analysis, sled test and vehicle barrier test verification. The optimization of BIW structure, airbag layout, seat foam design is proposed, which finally improved the vehicle crash performance. This article shows that the safety space of occupant, the safety restraint on the dummy, the stability of the seat state, etc., all have an important impact on the chest deflection performance, and the proposed solution is verified by the vehicle test and to be believed that is feasible. References | Related Articles | Metrics

Process·Materials

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Lightweight Design of Electric Articulated Buses Based on Size Optimization ZHANG Xinyi, ZHANG Youhong 2025, 50(1): 97-100,112.  DOI: 10.16638/j.cnki.1671-7988.2025.001.019 Abstract ( )   PDF (1694KB) ( )   The biggest problem with new energy vehicles currently is their short range. Lightweight design can some extent increase range and duration, and for traditional fuel vehicles, it can also reduce emissions and fuel consumption. This article takes a certain model of 18 m articulated electric bus as an example, and uses finite element software to optimize the size of the entire vehicle skeleton for lightweight design. In the end, the electric articulated bus lost 0.6 t of weight compared to the original skeleton, with a weight reduction rate of 13.1%, and the effect is significant. In summary, the lightweight scheme proposed and verified in this article is reasonable and effective, and has practical significance for improving the power performance and increasing range of new energy electric vehicles. References | Related Articles | Metrics

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Improvement of the Guide Wheel of Car Rain Detection Line Board Chain FENG Dongming 2025, 50(1): 101-104.  DOI: 10.16638/j.cnki.1671-7988.2025.001.020 Abstract ( )   PDF (1066KB) ( )   The guide wheel of the rain detection line board chain of a certain passenger car company showes abnormal wear after long-term use, resulting in unstable operation of the board chain, affecting the production efficiency of the car, and requiring replacement of the guide wheel, leading to high maintenance costs. Starting from this, the article analyzes the reasons for abnormal wear of guide wheel from the aspects of environment, materials, design, and stress. On this basis, improvements are made to the force surface of the guide wheel, material selection and structural optimization, and the device designed for the improved new guide wheel is verified. The result can be known that service life of the new guide wheel is significantly improved, thereby improving production efficiency and reducing maintenance costs. References | Related Articles | Metrics

Use and Maintenance

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Analysis Fault Data of Cooling System for Sagitar EA211 Engine ZHAO Xiaolong, SUN Wenge, LU Yayun, MA Cheng, WANG Feng, ZHOU Yanyan, BA Yinliang 2025, 50(1): 105-108.  DOI: 10.16638/j.cnki.1671-7988.2025.001.021 Abstract ( )   PDF (1685KB) ( )   In order to further explore engine cooling system data, improve and optimize engine performance, this article measures and analyzes the cooling system data of the Volkswagen Sagitar EA211 engine, summarizes various factors that cause engine cooling system failures and their specific manifestations, and further analyzes and refines the control strategy of the engine electronic fan on this basis. Through in-depth exploration, research, and analysis of engine cooling system fault data, guidance is provided to effectively reduce its fault occurrence rate, fully improve fuel efficiency, and ensure the normal operation of the engine. References | Related Articles | Metrics

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Roewe i5 Engine Starting Difficulty Analysis MA Cheng1 , WANG Fangcheng2 , Ailixiati Abulizi1 , ZHOU Yanyan1 , ZHAO Xiaolong1 2025, 50(1): 109-112.  DOI: 10.16638/j.cnki.1671-7988.2025.001.022 Abstract ( )   PDF (2207KB) ( )   With the increasingly stringent emission regulations, the engine electronic control technology is continuously optimized, and more and more sensors and electronic control systems are applied to the engine, so higher requirements are put forward for the diagnosis and elimination of engine circuit faults. This article will take the Roewe i5 engine starting difficulty fault as an example, and deeply analyze the structure, working principle and detection method of its crankshaft position sensor, which is also applicable to MG 3 MG 5 and other models using the same Bosch crankshaft position sensor, in order to provide reference opinions for relevant owners and maintenance personnel. References | Related Articles | Metrics

Automobile Education

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Reform Exploration of the Teaching Path of "Five Close-Five To-Mind Force" －Taking the Automotive Course of Fundamentals of Materials Science as an Example DONG Xiaoping, YANG Liying, SU Dandan, LI Zhiyuan, WANG Qing 2025, 50(1): 113-116,122.  DOI: 10.16638/j.cnki.1671-7988.2025.001.023 Abstract ( )   PDF (1060KB) ( )   Aiming at the three teaching pain points such as low compatibility between students' learning situation and traditional contents of teaching materials, low efficiency between "five close" and learning, and high fragile knowledge and low disciplinary thinking, proposes to restructure teaching content through "one body, two wings and ideological and political" chelation, three teaching concepts lead to classroom upgrading, three teaching objectives focus on innovative measures such as individualized teaching. Deep integration of information technology and traditional teaching, strengthens the interaction between teachers and students, optimizes teaching activities, improves the assessment mechanism, and obtains the teaching reform effect of good achievement of teaching goals, prominent student development trend, radiation teaching mode, and tracking student learning. The course constructs and implements to open the student "five close", to achieve "five to－mind force" transformation, to realize the immersive teaching mode, which not only enhances the breadth and depth of teaching, but also demonstrates good teaching results, and has transfer applications. References | Related Articles | Metrics

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Exploration of a New Eco-teaching Model with Teachers and Students Together －A Case Study of Vehicle Network System Maintenance Course YANG Xingguo 2025, 50(1): 117-122.  DOI: 10.16638/j.cnki.1671-7988.2025.001.024 Abstract ( )   PDF (1893KB) ( )   The case study focuses on the core course of new energy vehicle technology, aiming to address the issue of traditional teaching methods being unable to adapt to the changes in knowledge types, carriers, and dissemination methods in the digital age. It explores a new ecological teaching model of "four-cultivation" in vocational education classrooms, with students as the teaching subject and teachers as learning guides. Teachers use digital technology to build high-quality digital course resources, design reasonable teaching activities, and evaluate student learning outcomes; Students utilize digital resources, platforms, and tools to complete pre-class preparation, in-class tasks, and post-class expansion; Teachers and students jointly participate in teaching activities and work together to build a "four-cultivation" classroom ecosystem that cultivates teachers' digital literacy, learning guides, and students' independent thinking and innovative practice. Through teaching reform, this course has been awarded the first prize in municipal-level online excellent courses, school-level first-class courses, and school-level excellent course standards, providing a good demonstration role for similar course reforms. References | Related Articles | Metrics

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Teaching Reform and Practice of Specialized Courses of Automobile under the Background of Ideological and Political Science CAO Peng, JIANG Xingyang, DENG Longze 2025, 50(1): 123-126.  DOI: 10.16638/j.cnki.1671-7988.2025.001.025 Abstract ( )   PDF (1479KB) ( )   Ideological and political education is a necessary condition for building a strong country in education, and the combination of ideological and political education with professional courses is an important strategic measure for university moral of our country under the new situation. This paper takes the course of Automobile Engine Construction and Maintenance as an example, firstly investigates the policy and related literature, and analyzes the current situation of the teaching of automobile professional courses. Then, from the aspects of reforming the teaching concept and curriculum objectives, optimizing the teaching content and innovating the teaching methods, and improving the course teaching evaluation and feedback mechanism, the practical research on the teaching reform of automobile professional courses under the background of ideological and political education is carried out. The research results are helpful to enrich and improve the education and teaching theory system of ideological and political construction of automobile professional courses, and have certain reference value for the teaching reform of professional courses. References | Related Articles | Metrics

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Integrated Reform Exploration of Teaching and Research in the Course of Vehicle Dynamics and Control Based on Seminar Mode WANG Hongbo 2025, 50(1): 127-131.  DOI: 10.16638/j.cnki.1671-7988.2025.001.026 Abstract ( )   PDF (1017KB) ( )   The course Vehicle Dynamics and Control is a mandatory course for doctoral students majoring in vehicle engineering and related fields. In the introductory stage of doctoral students, mastering this course can lay a solid foundation for their learning and research. In this paper, it is pointed out that the problems of the current vehicle dynamics and control course content imperfection, the characteristics of doctoral teaching, and the single assessment method, and the necessity of carrying out an integrated reform of teaching and research based on the seminar model are proposed. The specific measures for curriculum reform are elaborated in detail from three aspects: course content, class format, and assessment methods. By implementing the teaching reform measures taken, the teaching content of this course has been enriched, the dimensions of exploration have been increased, and the assessment mode has been progressively optimized, thereby effectively improving the effectiveness of the integrated teaching and research reform. References | Related Articles | Metrics

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Research on the Situational Simulation Teaching Model of Automobile Marketing Based on the Integration of Industry and Education LIU Chao, LIU Zimeng 2025, 50(1): 132-135.  DOI: 10.16638/j.cnki.1671-7988.2025.001.027 Abstract ( )   PDF (1128KB) ( )   With the changing demand for talent structure in the automotive marketing industry, universities need to pay more attention to the cultivation of practical skills in automotive marketing. Therefore, based on the integration of industry and education, the reform of Automobile Marketing scenario simulation teaching mode can better integrate industry and teaching. By simulating real automotive marketing scenarios, students can learn theoretical knowledge of Automobile Marketing, master marketing operation skills, and enhance practical application abilities in practice. By creating scenarios, task driven, practical simulation, and integrating industry and education in the Automobile Marketing course, aiming to achieve a deep integration of automotive marketing theory and practice. This not only effectively improves teaching quality and effectiveness, but also cultivates students' practical abilities and innovative spirit. Based on this, can better promote the innovative development of the automotive marketing industry and optimize the allocation of educational resources. References | Related Articles | Metrics

Reviews

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Overview of Lightweight Technology for Commercial Vehicle WANG Xiaolong, FENG Shirong 2025, 50(1): 136-141.  DOI: 10.16638/j.cnki.1671-7988.2025.001.028 Abstract ( )   PDF (1474KB) ( )   The lightweight design of commercial vehicles is one of the current research hotspots in the automobile industry. By reducing the weight of vehicles, it can effectively improve fuel economy, reduce carbon emissions, and improve vehicles handling performance and safety. This paper discusses the background and significance of lightweight commercial vehicle in detail, focusing on the application of aluminum alloy, high strength steel and composite materials in body structure, wheels and chassis. At the same time, introduces the application of advanced manufacturing technologies such as 3D printing, laser welding and integrated die casting technology in lightweight design, and the corresponding connection technology, such as riveting, bonding and bolted connection. Typical case studies demonstrate the practical effects of lightweight measures, including improved fuel economy, reduced carbon emissions and improved vehicle performance. Finally, this paper summarizes the positive impact of lightweight design on the overall performance of commercial vehicles, and looks forward to the future development direction. References | Related Articles | Metrics

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A Review on the Mechanism and Control Measures of Automotive Brake Judder HUANG Linbing 2025, 50(1): 142-146.  DOI: 10.16638/j.cnki.1671-7988.2025.001.029 Abstract ( )   PDF (1050KB) ( )   In order to reduce after-sales complaints about automotive brake judder, reduce claim costs, and improve user satisfaction, this article summarizes the research results on brake judder issues both domestically and internationally. Firstly, the characteristics and types of brake judder problems are explained, followed by an analysis of their mechanisms and influencing factors. Finally, targeted control measures are proposed. It has been confirmed that the direct cause of brake judder is brake torque fluctuation and the amplification effect of transfer path. The root cause of brake torque fluctuation is disk thickness variation and sideface run-out of brake disc. The control measures for brake judder problem have been clarified to control the vibration source and reduce the amplification effect of the transfer path. The research results of the article can provide reference for after-sales analysts who solve the problem of automotive brake judder, and can also provide experience and reference for early developers of brake systems. References | Related Articles | Metrics

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Development Trend and Research of Hydrogen Supply System for Fuel Cell Commercial Vehicles XU Biao, LI Ming 2025, 50(1): 147-150.  DOI: 10.16638/j.cnki.1671-7988.2025.001.030 Abstract ( )   PDF (1330KB) ( )   With the increasing awareness of environmental protection, hydrogen fuel cell vehicles have attracted much attention because of their advantages such as high energy efficiency, no pollution and low noise. However, as the core component of fuel cell vehicles, the limitations of hydrogen storage system of hydrogen storage system, such as small hydrogen storage quality, short range, self-significant and high cost, restrict the development of fuel cell commercial vehicles. This paper focuses on the application of different hydrogen storage methods in fuel cell commercial vehicles, and conducts in-depth research and analysis of the integration, lightweight, large volume, and localization of high-pressure gas hydrogen storage system. Finally, the future development and research direction of the on-board hydrogen supply system are discussed. References | Related Articles | Metrics