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27 June 2024, Volume 49 Issue 12 Previous Issue   
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New Energy Vehicle
Intelligent Connected Vehicle
Design and Research
Testing and Experiment
Process·Materials
Automobile Education
Standards·Regulations·Management


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New Energy Vehicle

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Research on Consumers' Willingness to Participate in the Recycling of New Energy Vehicle Power Battery under the Goal of "Dual Carbon" YU Songyan, ZHANG Xiaoqing* , YUAN Xigang 2024, 49(12): 1-5.  DOI: 10.16638/j.cnki.1671-7988.2024.012.001 Abstract ( )   PDF (496KB) ( )   With the rapid development of the world economy, environmental problems are becoming increasingly prominent. The recycling of new energy vehicle power battery is a key problem that must be faced and solved in the new energy system. This paper analyzes consumers' willingness to participate in new energy vehicle power battery recycling. First of all, this paper collects data by questionnaire method and constructs an evaluation index system of power battery recycling. The structural equation model is modified by the correction index, and some useful conclusions are obtained through empirical analysis. The results show that both perception responsibility constraints and perception channel choice can indirectly affect consumers' participation willingness by influencing perceived knowledge sources. According to the research conclusions, corresponding suggestions are put forward to provide reference for participants to make the best decision plan. References | Related Articles | Metrics

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Analysis of Restrictive Factors in the Development of New Energy Vehicle ZHANG Yongqin 2024, 49(12): 6-10.  DOI: 10.16638/j.cnki.1671-7988.2024.012.002 Abstract ( )   PDF (804KB) ( )   Under the development goals of "peak carbon dioxide emissions" and "carbon neutrality" put forward by China, the development of new fuel vehicle technology will become a feasible means for China to alleviate the energy crisis and pollution problems. This paper introduces some common key technologies of clean energy vehicle, and compares their advantages and disadvantages. Then, the restrictive factors affecting the progress of key technologies of clean energy vehicle are listed. Finally, the development measures of new energy vehicle industry are put forward, such as strengthening national policy support, strengthening infrastructure construction, reducing the tax rate of new energy vehicle and strengthening the publicity of new energy vehicle technologies. Let the new development concept of green, environmental protection and safety of new energy vehicle be deeply rooted in people's hearts and promote the development of new energy vehicle industry. References | Related Articles | Metrics

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Analysis of Key Performance Design Points for Power Battery YE Ming, JIANG Xuyin, ZHENG Shuqi, ZHANG Hong, WANG Anmin 2024, 49(12): 11-15.  DOI: 10.16638/j.cnki.1671-7988.2024.012.003 Abstract ( )   PDF (1357KB) ( )   With the rapid development of new energy vehicles, new energy vehicles with more daily contact include battery electric vehicles (BEV), hybrid electric vehicles (HEV), and range-extended electric vehicles (REEV). Among them, the power battery provides the power source for the electric vehicles, the capacity, high and low temperature, fast charging, and lifespan of power batteries are directly related to the power, economy, reliability, durability, and charging performance of corresponding electric vehicles, thereby affecting the end user experience. This article mainly studies the fast charging performance, power performance, life cycles, consistency, and other aspects of power batteries. How to improve the corresponding performance of batteries to enhance the performance of electric vehicles, such as maximum speed, acceleration time, maximum slope climbing, and low-temperature starting, range, energy consumption rate, charging time,life cycles and other vehicle performance. References | Related Articles | Metrics

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Development and Design of New Energy Terminal Crimping Scheme Calculation System Based on C# Platform ZOU Li1 , ZHANG Wenzheng*2 , XI Leikang2 , ZHANG Tianxiang2 , ZHANG Bohui2 2024, 49(12): 16-19.  DOI: 10.16638/j.cnki.1671-7988.2024.012.004 Abstract ( )   PDF (717KB) ( )   At present, the terminal crimping height of the new energy vehicle harness is determined by means of test and verification in the industry, without involving a pre-planning system for the terminal crimping scheme, this system can calculate the terminal crimping scheme quickly and accurately before the start of production, so as to promote the process of production smoothly. This paper introduces the theoretical calculation method, database creation, user interface and the design and implementation of the calculation system for the terminal crimping height of the new energy vehicle wiring harness, and is verified by the comparison between the theoretical calculation and the practice, the two conclusions are the same, which can provide scientific reference and guidance for the scheme of wire beam terminal crimping. References | Related Articles | Metrics

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Analysis of Developing Insurance Rating Evaluation for New Energy Vehicles in Europe MIAO Shu1 , ZHAO Jun2 , WANG Longliang*1 , LU Shuang1 , CUI Dong1 2024, 49(12): 20-23.  DOI: 10.16638/j.cnki.1671-7988.2024.012.005 Abstract ( )   PDF (732KB) ( )   At present, the export momentum of China's new energy vehicles to overseas markets is strong. In the first half of fiscal year 2023, Europe became the region with the largest overseas market share of Chinese self-owned brand new energy vehicles. Among them, the UK and Germany have the highest sales volume of new energy vehicles. This paper mainly introduces the vehicle insurance rating system in the UK and Germany. The strong correlation between new energy vehicle insurance level and vehicle premium is analyzed by collating data. This paper explains the significance of vehicle insurance level development and design for vehicle manufacturers to export overseas and promote the cooperation between insurance and vehicle industry. References | Related Articles | Metrics

Intelligent Connected Vehicle

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Vehicle LiDAR Key Technology and Its Performance Requirements in Advanced Assisted Driving WANG Xiangyong, WANG Xixi, DAI Lili 2024, 49(12): 24-28.  DOI: 10.16638/j.cnki.1671-7988.2024.012.006 Abstract ( )   PDF (1052KB) ( )   With the development of intelligent driving technology, vehicles have put forward high precision requirement for the perception of driving environment, and in the multi-sensor cross-fusion scheme, light detection and ranging (LiDAR) is the key sensor to provide real time, high precision, full scene environment perception for vehicles. To figure out the trends in LiDAR technology, based on the architecture of LiDAR optoelectronic system and the basic principles of electrical detection, this paper expounds the key technologies of forward long range vehicle LiDAR, and systematically introduces the design principles and technical difficulties of LiDAR transceiver control system, scanning and optical system, photoelectric detection and signal processing system and other modules, and meanwhile analyzes the technical route selection of LiDAR. From the perspective of application, the basic performance requirements of vehicle-mounted LiDAR are put forward, and the latest development trend of vehicle-mounted LiDAR is summarized. References | Related Articles | Metrics

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Research on the Development Status of Vehicle Adaptive Cruise Control System ZHAO Xilong 2024, 49(12): 29-34.  DOI: 10.16638/j.cnki.1671-7988.2024.012.007 Abstract ( )   PDF (865KB) ( )   With the continuous development of social economy, the number of vehicles is gradually increasing, and the long-distance driving scenes of vehicles are gradually increasing. This adaptive cruise control system helps to reduce the burden of long-distance driving of drivers and improve the safety of vehicles. After introducing the composition of the adaptive cruise system, reading and organizing the relevant literature, analyzing the application of the system in different models, summarizing the current development of the system, and exploring the future development of the adaptive cruise system, providing reference for the development of the vehicle adaptive cruise system. References | Related Articles | Metrics

Design and Research

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Design and Strength Analysis of Automotive Door Interior Panel LIU Yunfang1 , YU Daxiang1 , WANG Zhangsheng1 , HUANG Qin3 2024, 49(12): 35-38,56.  DOI: 10.16638/j.cnki.1671-7988.2024.012.008 Abstract ( )   PDF (1800KB) ( )   The interior panel of automotive door is an important component of the automotive interior, and the quality of its design is crucial to the success of vehicle development. This article introduces the common components of the door interior panel, with a focus on the design of the map bag, the installation of the door trim panel, the matching of the inner buckle with the door trim panel, and the design of the speaker cover, providing reference for the design and development of the door interior panel of subsequent vehicle models. At the same time, to verify the rationality of the design, the door interior panel needs to be proven to comply with the design intent through various physical experiments. Finally, the commonly used finite element analysis software HyperMesh and ABAQUS are used to analyze the strength of the door interior panel armrest in the article, and whether its strength value under a vertical load of 220 N is greater than the yield strength of the material. The analysis results show that the design of the door interior panel meets the company's specifications. References | Related Articles | Metrics

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Analysis of Inflation Characteristics of Commercial Vehicle Pneumatic Braking System LIU Lijun, SUN Yuan, YANG Lu 2024, 49(12): 39-42.  DOI: 10.16638/j.cnki.1671-7988.2024.012.009 Abstract ( )   PDF (2527KB) ( )   The pneumatic braking system of heavy commercial vehicles is a safety item in the whole vehicle, and its characteristics under certain conditions are sometimes easily overlooked by designers. Therefore, this paper takes the pneumatic braking system as the research object, analyzes the stress of internal components of the four-circuit protection valve when the residual pressure of each air storage chamber is different due to various reasons, and observes the corresponding relationship between inflation pressure and time through basic air pressure test. The final result shows that the pneumatic braking system with four-circuit protection valve is obviously different from the ordinary pneumatic braking system in certain conditions: the smaller the residual air pressure, the less easy it is to inflate, but the larger the residual air pressure, the higher the inflation priority. It is hoped that the research results of this article can bring some enlightenment to designers to avoid the occurrence of problems related to pneumatic braking. References | Related Articles | Metrics

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Research on the Development of a 6×4R Heavy Commercial Vehicle Based on Inner Mongolia Regional Operating Conditions ZHAO Hang, JIN Xiaodong, GENG Jia, LI Tong, HE Haiyang, LIU Puqiang 2024, 49(12): 43-48.  DOI: 10.16638/j.cnki.1671-7988.2024.012.010 Abstract ( )   PDF (1547KB) ( )   This paper combines the transportation characteristics of heavy commercial vehicle in the coal transportation market in Inner Mongolia regional to develop the power system of a 6×4R heavy commercial vehicle. Based on the driving big data of heavy –duty semi-trailer in Inner Mongolia, the principal component analysis method and Markov probability prediction method are adopted to construct a road map of typical working conditions in Inner Mongolia that meets the driving driving force requirements of vehicles, based on this, the matching design of the vehicle power system is carried out, and the comprehensive fuel consumption of the vehicle is reduced by 1 L/100 km, achieving the best fuel economy. Meanwhile, different anti-lock braking system (ABS) layout schemes are proposed, and the compliance of vehicle ABS regulations is verified by tests, and then the ABS layout is determined. The simulation method of vehicle power system matching based on Inner Mongolia working conditions is proposed in this paper, which is helpful to design an efficient powertrain system suitable for heavy-duty semi-tractor in Inner Mongolia, and the ABS arrangement scheme can be applied to the development of the vehicle with the drive axle to be lifted or the following function. References | Related Articles | Metrics

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Methodology and Applications for the Development of Automotive Electrical Control System Based on Visual Analysis Models HAN Hu, REN Xianfeng, YAN Libing, HUA Wenshan 2024, 49(12): 49-56.  DOI: 10.16638/j.cnki.1671-7988.2024.012.011 Abstract ( )   PDF (1604KB) ( )   In the field of automotive electronic control system design, in order to solve a series of problems caused by the systematic development of traditional V mode by text, such as the inconsistency between design and original source requirement, the poor visualization analysis of scheme changes and risk assessment, and the difficulty of modular reuse of product variants, a model-based graphical representation development method of system engineering is proposed. Based on the V process development model, this method refines and decomposes the system requirement analysis and architecture design, builds the demand model, functional model, logical and physical architecture design model, and forms a set of formal modeling methods for the research and development of automotive electronic control system, and describes the electronic control system comprehensively and intuitively from the perspective of multiple views. Taking the vehicle cruise control function as a case study, this method is used to analyze the visual modeling of the cruise control system, which verifies the feasibility and effectiveness of the proposed method in the field of automotive electronic control system, and provides suggestions for the efficient development of automotive electronic control system. References | Related Articles | Metrics

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Research on Automatic Control System of Target Vehicle Gear with Linear Push Rod NING Tao 2024, 49(12): 57-61.  DOI: 10.16638/j.cnki.1671-7988.2024.012.012 Abstract ( )   PDF (1734KB) ( )   In this paper, the linear push-rod shift mechanism of target vehicles is transformed into automatic shift. In the mechanical structure, an electric push rod is adopted to push the shift lever for shift operation. By precisely controlling the expansion length of the push rod motor, the shift rod can be freely switched between R, N and D gears. A special controller is developed, which can realize the forward and reverse control of the pusher motor, and can collect the displacement data of the stretch length of the pusher motor in real time. A complete set of logic control software is designed, which can realize the closed-loop control of gear position by receiving the target gear position command and the current gear state feedback continuously. The results show that the system is stable, reliable and meets the working requirements. References | Related Articles | Metrics

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Research on Lateral Stability of Vehicle Based on Direct Yaw Moment Control WANG Yongqiang 2024, 49(12): 62-65,94.  DOI: 10.16638/j.cnki.1671-7988.2024.012.013 Abstract ( )   PDF (1212KB) ( )   In order to improve the operational stability and safety of a driving vehicle, a direct yaw moment controller can be built to achieve this. Firstly, according to the center of mass sideslip angle and yaw rate as input parameters, the direct yaw moment controller is designed by using the variable structure sliding mode control theory. Then the lateral stability boundary of the vehicle is designed based on the lateral stability coefficient, and the timing of the direct yaw moment controller is judged, then the corresponding adjusting moments of four wheels are obtained according to the established wheel control rules. Finally, the co-simulation results show that the selected control strategy can improve the vehicle's yaw rate and center of mass sideslip angle response threshold, and greatly improve the vehicle's lateral stability when driving at high speeds under low adhesion coefficient. References | Related Articles | Metrics

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Research on the Matching Method of Vehicle Manikin Based on Ramsis FENG Qing, YU Chaofeng, ZHANG Xinlei 2024, 49(12): 66-69.  DOI: 10.16638/j.cnki.1671-7988.2024.012.014 Abstract ( )   PDF (2152KB) ( )   In automotive ergonomic design, there has always been a compatibility issues between the Ramsis 3D manikin and the traditional 2D manikin, resulting in differences in the analysis conclusions of the two methods. Previous relevant standards and experiences can not be transplanted into the 3D design environment. This article analyzes the differences between the 3D manikin simulation and the 2D manikin, starting from the completeness of simulation constraints. On the basis of traditional constraints, visibility and support of seat have been added, and verified with vehicle development projects. A set of simulation methods that effectively combine the 3D manikin and the 2D manikin has been summarized. References | Related Articles | Metrics

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The Analysis for Brake Squeal Affection by Brake Pressure Distribution XIE Taoxin1 , XIANG Hui1 , JIANG Kai2 , ZHANG Qiuyang1 2024, 49(12): 70-75.  DOI: 10.16638/j.cnki.1671-7988.2024.012.015 Abstract ( )   PDF (2142KB) ( )   Based on modeling and complex modal analysis, the concept of brake pressure distribution is put forward to solve the problem of howling in automobile disc brake. When the pressure distribution of the friction plate is large, the total deformation of the friction plate is the largest, and the probability of noise is greater. Based on the results of the noise, vibration and harshness (NVH) of SAE-J-2521 bench, a method for predicting brake pressure distribution is obtained through case study. Due to the uneven pressure distribution, the pressure distribution can be improved by reducing the area of the friction plate screw-in end, so as to improve the performance of brake noise. Through case analysis, the single parallel "J" chamfer scheme is added to optimize the pressure distribution of the friction plate and improve the performance of brake noise. References | Related Articles | Metrics

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Steering Trapezoidal Optimization Design Based on Tire Elastic Deformation GAO Qinghui 2024, 49(12): 76-79.  DOI: 10.16638/j.cnki.1671-7988.2024.012.016 Abstract ( )   PDF (1113KB) ( )   As heavy truck users put forward higher requirements for vehicle maintenance costs, this article discusses how to solve the abnormal tire wear caused by steering problems and reduce customer operating costs. In this paper, Ackerman's theory of the angle relationship and its influence on the steering of automobiles are introduced. Under the condition of considering the lateral deflection angle of elastic tires, a theoretical angle relationship of elastic tires that is closer to reality is proposed, and theoretical analysis is carried out. Subsequently, the spatial trapezoidal model of the integral steering trapezoidal mechanism is established, and how to calculate the rotation angle of the outer wheel by using the graphical method is introduced. Finally, by sharing the case of optimizing the steering trapezoid, the case of abnormal wear of vehicle tires is solved. It is explained that the steering trapezoidal optimization method adopted in this paper is suitable for heavy-duty trucks with integral steering trapezoidal mechanism, and provides some references for the matching of integral steering trapezoid. References | Related Articles | Metrics

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Matching Design of Steering System for a Certain Vehicle Model WANG Jiabing, ZHANG Hao, FENG Zhiguo, XU Kanghui, ZHAO Renjie, YANG Weixing 2024, 49(12): 80-82,106.  DOI: 10.16638/j.cnki.1671-7988.2024.012.017 Abstract ( )   PDF (1109KB) ( )   The steering system components are all important security components, and the design should comprehensively consider the relevant data based on the overall vehicle layout to ensure the safety of the vehicle during driving. This article takes a certain commercial vehicle model as an example to introduce the key hard point verification of the steering system and the matching and selection scheme of the hydraulic power steering system. Through the verification of the steering suspension system, the hard point layout position of the steering system is selected and verified. The key installation dimensions are verified through the overall vehicle layout structure, and the relevant parameters of the hydraulic power steering system are further calculated.The study has a strong guiding significance to the later similar vehicle design. References | Related Articles | Metrics

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Design of Dual-partition BootLoader for Automotive Instrument Based on KF32A Microcontroller HUI Zhizhou1 , SHAN Hui3 2024, 49(12): 83-88.  DOI: 10.16638/j.cnki.1671-7988.2024.012.018 Abstract ( )   PDF (1428KB) ( )   The BootLoader based on the unified diagnostic services (UDS) protocol needs to read the software and hardware version before upgrading. When the upgrade is abnormally interrupted and the automotive instrument screen is black, it may not be able to obtain the accurate software and hardware version, and the upgrade cannot be restarted. In order to solve the above problems, three ways of software rollback are proposed, their advantages and disadvantages are analyzed, and a BOOT program of combined instrument is designed with the boot mode of A/B area alternating with each other. When the upgrade is interrupted abnormally, the application can automatically rolling back to the previous stable version and can continue to work. CANoe software is used to design the upper computer of the BootLoader, and the verification is carried out in three steps: normal upgrade, abnormal upgrade, and upgrade after abnormal interruption. The experimental results show that when the upgrade is interrupted, the instrument can be rolled back to the previous software version to continue to work, and can be upgraded according to the original step, and the expected effect is achieved. References | Related Articles | Metrics

Testing and Experiment

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Research on Online Detection Method for Urea Solution Quality of Diesel Vehicle BAI Xiaoxin1 , WU Chunling1,2 , LIU Weilin1 , JING Xiaojun1 , YANG Yongzhen1 , LI Xu1 2024, 49(12): 89-94.  DOI: 10.16638/j.cnki.1671-7988.2024.012.019 Abstract ( )   PDF (1380KB) ( )   Selective catalytic reduction (SCR) is a widely adopted technology for reprocessing diesel emissions to comply with regulations. In SCR systems, an aqueous urea solution acts as a reducing agent to convert NOX into N2, ensuring that engine emissions meet regulatory standards. To achieve real-time monitoring of engine emissions and ensure the quality of urea meets requirements, this paper presents a method for detecting the quality of urea solution in diesel vehicles based on on-board diagnostic (OBD) system data. By thoroughly analyzing the working principle of SCR systems and the calculation method for urea injection quantity, a detection method for urea quality based on NH3 influence deviation factor is established. The feasibility of this approach is verified through actual road tests involving three different concentrations of urea solution added to a diesel vehicle. The results demonstrates that proposed method can effectively detect urea quality and provide reliable data support for real-time control of engine emissions. References | Related Articles | Metrics

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Torsional Characteristics Study of Dual Mass Flywheel for 1.6T GDI Engine ZHOU Bihai1 , SANG Ruichen*2 , TAN Guanhua1 2024, 49(12): 95-100,111.  DOI: 10.16638/j.cnki.1671-7988.2024.012.020 Abstract ( )   PDF (2658KB) ( )   For a targeted vehicle with a 1.6T gasoline direct injection (GDI) engine, a dual mass flywheel specifically tailored to enhance vehicle comfort has been designed. Firstly, based on the working principles of the dual mass flywheel, the internal and external arc springs of the dual mass flywheel are designed to ensure its torsional characteristics, and a 3D model is established using CATIA. Subsequently, to guarantee the performance of the dual mass flywheel, checks are conducted on the designed arc spring stiffness, stress, and the flywheel's torque capacity and temperature rise. The results indicate that the design satisfies the criteria. Finally, through experiments, the high-speed durability and fatigue performance of the designed dual mass flywheel are verified. References | Related Articles | Metrics

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Analysis on Fault Tree of Automobile Air Conditioning Based on Monte Carlo Simulation WU Yong, WANG Xiaoyang 2024, 49(12): 101-106.  DOI: 10.16638/j.cnki.1671-7988.2024.012.021 Abstract ( )   PDF (1221KB) ( )   In order to ensure the continuous and stable operation of automobile air conditioning system, the research goal is to find the most easily damaged parts. Based on the established structural model of the automotive air conditioning system, analyze the structure and working principle of the air conditioning system, and establish a fault tree model with the inability of the air conditioning to cool as the top event. Qualitative and quantitative analysis can be conducted based on the established fault tree model. Quantitative analysis can calculate the probability of the occurrence of the top event and the basic event that has the greatest impact on it. Qualitative analysis can determine the set of all events that have caused the top event and rank their correlation. Using Monte Carlo simulation to conduct simulation analysis on the system structure model, verifying the correctness and objectivity of the tree building results, the final conclusion is that the compressor is the most vulnerable component of the air conditioning system, and this component should be optimized and strengthened. References | Related Articles | Metrics

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Investigation and Optimization of the Acceleration Steering Wheel Shake Problem in a Certain SUV ZHAO Xin, HU Xin 2024, 49(12): 107-111.  DOI: 10.16638/j.cnki.1671-7988.2024.012.022 Abstract ( )   PDF (1619KB) ( )   This article mainly focuses on the issue of steering wheel vibration during acceleration of a certain sport utility vehicle (SUV). The article uses fishbone analysis method to investigate and test the assembly process, transmission system, exhaust system, suspension system, steering system, tire dynamic balance, etc, it is finally confirmed that the steering wheel resonance is caused by the coupling of the steering system modes. Using modal and transmission theory for analysis, it is proposed to change the first-order pendulum mode of the steering system to achieve the goal of modal frequency avoidance. Based on the simulation results, an optimized sample is made to verify its effectiveness. The peak vibration of the steering wheel decreased from 0.46g to 0.24g, indicating a significant improvement in subjective perception. This provides a solution and approach for the issue of steering wheel shaking in other vehicle models in the future. References | Related Articles | Metrics

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The Influence of Measurement Point Location on the Wind Noise Test Results of Automotive Wind Tunnels ZHANG Liang1 , LI Chang2 , ZHANG Xiangdong1 , WANG Haiyang1 2024, 49(12): 112-116.  DOI: 10.16638/j.cnki.1671-7988.2024.012.023 Abstract ( )   PDF (3187KB) ( )   With the development of automotive wind tunnel technology and the increase in the number of automotive wind tunnels, wind noise testing in automotive wind tunnels has gradually become the main testing method for automotive wind noise development. The article is based on wind noise testing in automotive wind tunnels and investigates the influence of measurement point positions on test results. Study is found that when the position of the artificial head inside the car changes in the X direction, the total sound pressure level, articulation index, and loudness change slightly, but there are differences in the spectral characteristic curves. The sound pressure level and loudness all show a increasing trend with increasing height in the Z direction, and articulation index show a decreasing trend. The farther the far-field microphone outside the automotive is from the center of the force balance in the Y direction, the lower the sound pressure level will be. References | Related Articles | Metrics

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Analysis and Fuel Consumption Determination for Heavy Commercial Vehicles QIAO Yangyang, TANG Zhibo, YANG Yunlong 2024, 49(12): 117-122,132.  DOI: 10.16638/j.cnki.1671-7988.2024.012.024 Abstract ( )   PDF (1376KB) ( )   In order to determine the fuel consumption of heavy commercial vehicles, the influence of the coasting resistance coefficient on fuel consumption is investigated by road coasting test method to improve the accuracy of the test results. Therefore, a high-precision inertial navigation test system is proposed to carry out road coasting tests on 4 fuel trucks of a certain brand with different tonnage. The measured resistance coefficients A, B and C are obtained according to the fitting principle of least square method, and the calculation formula of coasting resistance is obtained. Microsoft Excel software is used to combine the calculation formula of coasting resistance. The calculation software of taxi data analysis and processing is designed. The comparison and analysis between the measured resistance value and the recommended resistance value of GB/T 27840 － 2011 and the fuel consumption test results of chassis dynamometer show that the error between the measured resistance value and the recommended resistance value in the table is about 9%. The fuel consumption measured by the actual road coasting test can better reflect the actual situation of the vehicle, and the data calculation software designed by the example is verified to be efficient and reliable to complete the data processing, which has high practicability. References | Related Articles | Metrics

Process·Materials

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Application Research on Improving the Quality and Efficiency of Robot Automatic Gluing Process JIANG Zhiyuan, WANG Xiaozhuan, XUE Jinlei 2024, 49(12): 123-128,138.  DOI: 10.16638/j.cnki.1671-7988.2024.012.025 Abstract ( )   PDF (3336KB) ( )   Welding workshop auto parts gluing process in the design of the traditional way, to meet the welding workshop a variety of products, different adhesive types, different strip diameters at the same time operation needs, high investment costs and occupy a relatively large space. This paper introduces a robot based single pump multi-servo quantitative machine (glue guns) gluing system, combined with the application of visual inspection technology, in auto parts gluing production, pre-control and post-monitoring, to improve the quality and efficiency of robot automatic gluing process in automobile manufacturing. Single pump and mult-servo quantitative machines (glue guns) are controlled by the "master control system", which can adjust the robot automatic gluing operation program based on the glue requirements of a single glue pump corresponding to a variety of products and different glue diameters. At the same time, it can effectively improve the utilization rate of auto parts glue equipment in the welding process, reduce capital investment, and effectively ensure the quality of gluing. References | Related Articles | Metrics

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Research on the Improvement of F2000 Cab Assembly Pass Rate SHI Lei, ZHANG Han 2024, 49(12): 129-132.  DOI: 10.16638/j.cnki.1671-7988.2024.012.026 Abstract ( )   PDF (1342KB) ( )   Assembly pass rate of cabs is an important index which evaluates the ability of quality control in assembly process. In order to improve assembly pass rate of cabs, the F2000 heavy vehicle cab is taken as the research object in this paper. Through statistical data, the main reason for the low assembly pass rate of cabs is found to be the broken rib. Based on the "5W1H" principle, the paper identifies seven factors that led to rib breakage, and the main factors are analyzed as assembly tools and component structure by using the Six Sigma methodology. The problem of fragile rib is solved by clarifying the assembly tools and optimizing the strength of the rib. After tracking and verifying the improvement measures, the assembly pass rate of F2000 cabs is effectively improved. References | Related Articles | Metrics

Automobile Education

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Research on the Curriculum System Reform of Automobile Majors Based on the Combination of "Post, Course, Competition, Certification" DONG Bin 2024, 49(12): 133-138.  DOI: 10.16638/j.cnki.1671-7988.2024.012.027 Abstract ( )   PDF (1305KB) ( )   Through "the combination of post, course, competition, certification", setting up professional courses according to job requirements, setting up teaching content according to 1+X vocational qualification certification, and incorporating vocational skills competition content into the curriculum system. Building a training model for automotive professionals based on the integration of "post, course, competition, certification", and cultivate a group of prospective employees with excellent professional skills, corresponding corporate culture and professional ethics to strong employment ability and sustainable development ability. To transport more suitable job needs for the automobile industry, and to service central plains regional economic development and Zhengzhou central city construction to develop high-quality technical skills of "practice both moral and technical skills" artisans. References | Related Articles | Metrics

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Effective Strategies for Improving the Moral Education Ability of Young Automobile Teachers in Vocational Colleges LUO Ji 2024, 49(12): 139-143.  DOI: 10.16638/j.cnki.1671-7988.2024.012.028 Abstract ( )   PDF (984KB) ( )   In order to carry out the fundamental task of establishing morality and cultivating people in vocational colleges, we should help the construction of young teachers who attach equal importance to the awareness and ability of moral education. Based on the theoretical basis of the cultivation of teachers' moral quality and the group of young automobile teachers in vocational colleges, this paper makes an analysis of the connotation and components of moral education ability, according to the results of the investigation and research on the lack of moral education ability of young teachers in vocational colleges. Finally, the four-integrated development strategy of "training, competition, research and course" is proposed from the modules of moral concept, content, resource, method and evaluation, it provides reference for vocational colleges to carry out the cultivation of young teachers' moral education ability. References | Related Articles | Metrics

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Research on the Teaching of Automotive Testing Practical Training Course Based on PBL Teaching Method LI Jiuxiang, MEI Zhendong, GUAN Mingjun 2024, 49(12): 144-147,158.  DOI: 10.16638/j.cnki.1671-7988.2024.012.029 Abstract ( )   PDF (1053KB) ( )   Automotive Testing Practical Training course is an essential course for automotive testing and maintenance technology majors, is a core practical course in the talent training program for automotive testing and maintenance technology majors, is a mandatory course for automotive repair professionals in the automotive repair industry. The problem-based learning (PBL) teaching method is universally applicable to vocational education, and this paper analyzes the shortcomings of the PBL teaching method, proposes teaching improvement measures, and designs a teaching case of applying the PBL teaching method to the Automotive Testing Practical Training course. Through teaching, the students' problem-solving ability is effectively enhanced, practical skills are mastered, teamwork skills and practical ability are improved, autonomous learning ability and deep learning ability are enhanced, etc., which provides reference for the teaching reform research of Automotive Testing Practical Training courses in higher vocational colleges. References | Related Articles | Metrics

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Exploration and Practice of the Digital Transformation of the Integrated Classroom of Science and Praltice Based on Mixed Teaching －Take the Introduction to New Energy Vehicles Course as an Example ZHANG Rudan 2024, 49(12): 148-151.  DOI: 10.16638/j.cnki.1671-7988.2024.012.030 Abstract ( )   PDF (1520KB) ( )   Based on the mixed teaching as the core, the core professional course "introduction to new energy vehicles" as the basis, combined with the specific requirements corresponding to the "post class competition certificate", the paper actively restructured the teaching content in view of the teaching pain points, and built a "four-dimensional" teaching space of "online learning+offline deepening+practical operation training+assessment and enabling". Construct the "ARCS+PBL+ OBE" classroom training mode, innovate the assessment and evaluation mode of "explicit and implicit assessment", build a smooth mode of mutual recognition of curriculum practical training assessment and acquisition verification exercise assessment results, innovate classroom teaching mode on the basis of traditional classrooms, and promote the digital transformation of the integrated classroom of science and practice in higher vocational colleges. References | Related Articles | Metrics

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Feasibility Analysis of the Integration of Traffic Accident Forensic Appraisal into the Vehicle Engineering Curriculum System LIU Cijian1 , PENG Shanshan1 , YU Zilong2 2024, 49(12): 152-158.  DOI: 10.16638/j.cnki.1671-7988.2024.012.031 Abstract ( )   PDF (1499KB) ( )   Considering the contradiction between the shortage of talents in the road traffic accident forensic industry and the lack of employment difficulties for vehicle engineering students, it is necessary to explore the close connection between the two, and seek a win-win route that can solve the current contradiction and be conducive to the common development of the two. Through the elaboration of the nature, professional requirements and research direction of forensic work, the concept of forensic is concise, the inseparable connection between forensic and vehicle major is introduced, the curriculum of forensic is concisely introduced after it is incorporated into the curriculum system, and the employment direction of students of related majors is clarified. Finally, in the feasibility analysis of various aspects, the view that the forensic appraisal of traffic accidents and the curriculum system of vehicle engineering complement each other is comprehensively expounded. References | Related Articles | Metrics

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Research on Teaching Reform of Automotive Integrated Courses Based on Career Planning WANG Haoran, ZHU Kaijia, DU Jiuling 2024, 49(12): 159-162.  DOI: 10.16638/j.cnki.1671-7988.2024.012.032 Abstract ( )   PDF (1019KB) ( )   With the rapid development of the automotive industry, traditional integrated automotive course teaching has problems such as single teaching methods and weak practical links, making it difficult to cultivate talents suitable for the needs of the automotive industry. This article explores the idea of integrated curriculum teaching reform based on career planning through literature analysis and research. It proposes teaching reform strategies such as integrating career planning into talent cultivation programs and establishing a diversified curriculum evaluation system. Through feedback surveys of students and enterprises, it is shown that the integrated teaching reform of automotive courses described in this article can better stimulate students' learning enthusiasm and help cultivate high-quality talents suitable for industry needs. References | Related Articles | Metrics

Standards·Regulations·Management

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Research on the Acceptance of New Energy Vehicles among the People in Northwest China Based on Technology Acceptance Model and Perceived Risk Theory Ailixiati Abulizi, WANG Feng, LI Jianxin, XUE Xihong 2024, 49(12): 163-168.  DOI: 10.16638/j.cnki.1671-7988.2024.012.033 Abstract ( )   PDF (1678KB) ( )   In order to improve the acceptance of new energy vehicles by the public, a structural equation model of consumer willingness to purchase new energy vehicles is constructed by combining the technology acceptance model and perceived risk theory, considering the characteristics of new energy vehicles and regional characteristics. Using SPSS and AMOS to statistically and fit the collected data, conduct in-depth analysis and summarize the influencing factors of people's willingness to purchase new energy vehicles. The research results indicate that perceived risk and perceived cost have a significant impact on car purchase intention, while the public's knowledge base of new energy vehicles has a significant negative impact on their perceived risk and perceived cost. Finally, based on the above conclusions, corresponding policy and strategic recommendations are proposed to provide a theoretical basis for promoting new energy vehicles in the region. References | Related Articles | Metrics

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Research on the Application of Comprehensive Budget Management in Agile Development Projects of Electric Vehicle Architecture LIN Hai 2024, 49(12): 169-173.  DOI: 10.16638/j.cnki.1671-7988.2024.012.034 Abstract ( )   PDF (1219KB) ( )   In order to cope with the increasing competition, many vehicle companies beign to develop electric vehicle architecture projects. Due to the change of internal and external environmental, the electric vehicle architecture projects needs to adopt an agile development model for dynamic iteration, which increases the complexity of architecture budget management. Combined with the agile development project of electric vehicle architecture of a new energy vehicle enterprise, this paper analyzes the special use and pain points of electric vehicle architecture budget, as well as the necessity of establishing a comprehensive budget management mechanism, and puts forward solutions such as strengthening budget process control, emphasizing unpredictable costs, establishing a "point-line-surface" three-dimensional budget management mechanism, and clarifying input and output, in order to provide reference for other companies in the same industry to improve the level of budget management. References | Related Articles | Metrics

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Research on Risk Assessment Quantitative Methods of Functional Safety for Vehicle Control System GUO Jing, LI Zhongyou, GAN Zixue, WU Guangyao, HUANG Zhe 2024, 49(12): 174-178.  DOI: 10.16638/j.cnki.1671-7988.2024.012.035 Abstract ( )   PDF (1450KB) ( )   In recent years, automobiles have developed towards electrification, intelligence, networking and sharing, electronic, electrical and programmable systems have been widely used in the automotive industry, and their related safety has become a current research hot topic. The Road Vehicle Functional Safety Standard (ISO 26262) guides the design, development and testing of electronic systems, where hazard analysis and risk assessment (HARA) are an important step in safety analysis. This paper discusses the HARA analysis process and reveals the shortcomings of traditional analysis methods such as heavy workload, reliance on team experience, and subjective rating, and at the same time, a quantitative assessment method is proposed to calculate the integrity level of vehicle safety through parametric hazard events and assessment rules, so as to improve the reliability and consistency of risk assessment. References | Related Articles | Metrics