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25 July 2024, Volume 49 Issue 14 Previous Issue   
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New Energy Vehicle
Design and Research
Testing and Experiment
Process·Materials
Use and Maintenance
Automobile Education
Standards·Regulations·Management


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New Energy Vehicle

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Optimization Research of Cooling Mode of Thermal Management System for Battery Electric Vehicle LIU Houlin1 , ZHANG Yan*2, HE Lian'ge2 2024, 49(14): 1-8.  DOI: 10.16638/j.cnki.1671-7988.2024.014.001 Abstract ( )   PDF (4361KB) ( )   In order to ensure that battery electric vehicle can work efficiently and stable within the right temperature range in the case of high temperatures in summer, different cooling mode are conducted for a new energy battery electric vehicle in this paper. On the basis of real-time road conditions, real-time data is collected, including ambient temperature, speed, battery and motor temperature, etc., and analyzes it through a one-dimensional model. The simulation results show that the maximum errors in the three positions of air conditioning outlet, battery and motor are 5.1%, 3.5% and 4.6%, respectively. After that, the cooling mode is optimized, and the comparative analysis finds that the active cooling mode can increase the cooling of the battery, motor and electronic control temperature by at least 10% compared with the passive cooling mode, which has reference value for the actual research and development of the thermal management system. References | Related Articles | Metrics

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Research on Power Battery Recycling System Based on Evolutionary Game Modeling ZHANG Yongqin 2024, 49(14): 9-12,125.  DOI: 10.16638/j.cnki.1671-7988.2024.014.002 Abstract ( )   PDF (694KB) ( )   The decommissioning issue of new energy vehicle power battery has attracted much attention, if not properly disposed will cause environmental pollution and waste of resources, so it is urgent to make good use of power battery again. This paper takes the issue of whether to utilize technological innovation in the power battery recycling system of new energy vehicle as the starting point, and through the construction of the evolutionary game model between battery manufacturers and recyclers, it is concluded that in the stage of power battery secondary utilization, the government departments should give subsidies to the third-party recycling enterprises for technological innovation, which will help to form a stable closed-loop recycling market for power battery. References | Related Articles | Metrics

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Research on Vibration and Noise Matching Strategy of Extended Range Electric Vehicles ZHANG Hongjun1 , SHI Xiangnan1 , CHEN Jingchang2,3 2024, 49(14): 13-18.  DOI: 10.16638/j.cnki.1671-7988.2024.014.003 Abstract ( )   PDF (1442KB) ( )   Compared with traditional fuel vehicle and pure electric vehicle, the noise, vibration, harshness (NVH) problem of range extender electric vehicle is more complicated because of the influence of range extender control strategy. The unreasonable matching control logic is easy to cause problems such as high acceleration noise, roar, etc., and the later change cost is large and the cycle is long. In this paper, the theoretical model of the range extender system is simplified and the range extender system is regarded as an integral excitation source. By monitoring the state of the whole vehicle, the performance of the vibration and noise of the key points in the vehicle under different effective torque and crankshaft speed output by the range extender system, and avoiding the poor performance of the NVH strategy points, in the early stage of the project, the matching optimization of the vibration and noise of the key points in the vehicle can be realized, save cost and shorten project development cycle. References | Related Articles | Metrics

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Coordinated Charging Strategy Based on Electric Vehicle Charging Priority LUO Yuling, DU Wan, DONG Tianyue 2024, 49(14): 19-24.  DOI: 10.16638/j.cnki.1671-7988.2024.014.004 Abstract ( )   PDF (985KB) ( )   Aiming at the problem that owners random charging activities brings challenges to the charging management of electric vehicles, a coordinated charging algorithm based on charging priority is proposed. The algorithm forms the electric vehicle charging priority sequence according to the time monitoring mechanism, and predicts the power grid capacity margin parameters through the power grid basic load data and electric vehicle power demand. Then, according to the grid capacity margin and charging priority, the charging process of electric vehicles is optimized, and the charging power under coordinated optimization is obtained. The simulation results show that the proposed coordination algorithm can meet the power requirements of the power grid, ensure the power demand of vehicle owners, and minimize the peak load of the power grid, which has important guiding significance for the development of the electric vehicle industry and smart grid planning. References | Related Articles | Metrics

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Analysis and Optimization of Low Frequency Road Noise of a Pure Electric SUV Model GAO Fahua, PENG Chao, ZHAO Kun, LIU Feng 2024, 49(14): 25-28,69.  DOI: 10.16638/j.cnki.1671-7988.2024.014.005 Abstract ( )   PDF (1934KB) ( )   In order to optimize some low-frequency road noise problems of a pure electric sport utility vehicle (SUV), this paper investigates and optimizes the excitation source, transmission path and response of this model in detail through the analysis of road noise transmission path based on the mechanism of road noise generation and combines with the mode distribution of the whole vehicle, and effectively suppresses the vehicle low-frequency road noise. This paper identifies different frequencies of noise in the front and rear of the vehicle, including ear pressure near 30 Hz in the front, cavity sound near 200 Hz in the front, and drumming near 75 Hz in the back. The low frequency noise of the vehicle is controlled to a good level through road noise source control, path vibration isolation improvement and response optimization, and the subjective evaluation is good. The low-frequency road noise problem identified in this paper is a typical problem in the process of vehicle road noise development. The analysis and optimization ideas have certain guiding significance for the analysis, investigation and test methods of vehicle road noise problems. References | Related Articles | Metrics

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Lightweight Design of Hydrogen Supply System for Fuel Cell Vehicles XU Biao, LI Ming, YANG Jianqiang, XIA Hao, ZHOU Pengpeng 2024, 49(14): 29-34.  DOI: 10.16638/j.cnki.1671-7988.2024.014.006 Abstract ( )   PDF (3551KB) ( )   In order to ensure the safe operation of the vehicle, avoid the cylinder bracket fracture safety, requires the strength of the hydrogen storage system framework is higher, not only to meet the requirements of national standard, also need to ensure that the vehicle hydrogen leakage in the process of collision. In this paper, the hydrogen storage system framework of a fuel cell tractor is taken as the prototype, and it uses magnesium alloy instead of steel material to analyze whether the magnesium alloy can meet the requirements of the framework strength of the hydrogen storage system, and achieve the lightweight goal of the whole vehicle and increase the revenue of customers. References | Related Articles | Metrics

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Optimization Study of Exhaust Noise of Hydrogen Fuel Vehicles under High Power Operating Conditions QIN Ming, QIAO Wancheng, LIU Gang, WANG Shiying 2024, 49(14): 35-39.  DOI: 10.16638/j.cnki.1671-7988.2024.014.007 Abstract ( )   PDF (1222KB) ( )   In order to address the issue of exhaust noise in hydrogen fuel vehicles under high-power load conditions of fuel cell stacks, the acoustic performance of the muffler system is optimized through interactive analysis of acoustic testing and flow field simulation. Finite element method is used to simulate and analyze the turbulent kinetic energy of the internal flow field of the muffler, and acoustic testing methods are used to verify the transmission loss of the muffler. Research has found that the performance of the original state muffler is average in the mid frequency range and poor in the low and high frequency range. By establishing a flow field simulation model for the muffler, optimize its internal structure, including variable diameter air ducts, muffler lining, and shock absorber pads. The fluid simulation calculation results show that the turbulence kinetic energy in the fluid domain of the new muffler structure is significantly reduced, improving the turbulence phenomenon inside the muffler. The acoustic test results of the muffler show that the transmission loss of the new state muffler is significantly improved in the frequency range of 500~12 500 Hz, presenting a better noise reduction effect. The research results indicate that under high-power load full frequency operating conditions of the fuel cell stack, the combination of flow field simulation and acoustic testing can quickly optimize the muffler structure, improve the noise reduction performance in the full frequency range, and improve the comfort and user experience of the vehicle. References | Related Articles | Metrics

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Research on Control Strategy of Electric Controlled Semi-active Suspension WANG Jie, QIAO Hui, WANG Xin, SHUAI Shunxin, TANG Du 2024, 49(14): 40-45.  DOI: 10.16638/j.cnki.1671-7988.2024.014.008 Abstract ( )   PDF (2383KB) ( )   This article discusses the common control methods of semi-active suspension, establishs mathematical models of passive suspension and semi-active suspension of automobiles, and establishs ADAMS and MATLAB co-simulation models for passive suspension, skyhook damping control switch-type semi-active suspension and optimal control semi-active suspension based on the mathematical models. Through a comprehensive analysis of the body vertical acceleration, suspension dynamic deflection and tire dynamic load, it is concluded that compared with passive suspension, the skyhook damping control switch-type semi-active suspension and the optimal control semi-active suspension significantly improve the ride of the vehicle and maneuvering stability. References | Related Articles | Metrics

Design and Research

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Application Research of Active Oil-gas Separator Based on Motor Control WANG Huan, WU Wenhao* , SUN Kemiao, ZHOU Jianliang, ZHOU Yangluan 2024, 49(14): 46-50.  DOI: 10.16638/j.cnki.1671-7988.2024.014.009 Abstract ( )   PDF (1061KB) ( )   In order to overcome the limitation of passive oil and gas separator and improve the separation efficiency of small diameter oil droplets below 1 μm, an active oil and gas separator based on motor control is designed, the oil and gas separator integrates the permanent magnet synchronous motor electronic control technology, and realizes the functions of start-stop control, self-diagnosis, overvoltage and overload protection of the oil and gas separator. The active oil-gas separator is driven by a motor to rotate the separation impeller at high speed, and realizes the purpose of gas-liquid two-phase separation with the help of centrifugal force and separation cotton. The experimental results show that the separation performance of the active oil-gas separator is more excellent than that of the passive oil-gas separator. The speed of the oil and gas separator is 12 000 r/min and the intake gas is 100 L/min, the separation efficiency of the active oil and gasseparator reaches 99.1%, and the oil carrying capacity is reduced to 0.149 8 g/h. At the same time, the test points out that the separation effect of passive oil and gas separator on small diameter oil droplets is obviously insufficient, and the separation efficiency of active oil droplets from 0.5 μm to 0.6 μm reaches 85.7%, which is significantly ahead of the passive oil and gas separator in the separation performance of small diameter oil droplets. References | Related Articles | Metrics

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Research on Multi-objective Optimization of Coach Frame Using Compromise Programming Method JIANG Libiao1,2, MO Xiaohao2 , YAN Linsong2 2024, 49(14): 51-56,94.  DOI: 10.16638/j.cnki.1671-7988.2024.014.010 Abstract ( )   PDF (2213KB) ( )   In order to reduce the mass of a coach and optimize its static characteristics, a lightweight method of coach frame based on mass objective and stiffness objective is proposed, and a finite element model of coach frame is established. According to two common working conditions in long-distance coach operation, 7 static full-load working conditions are set up, and their strength and stiffness are analyzed by finite element method. At the same time, the frame members are divided into 25 groups of design variables according to the computed cloud image and assembly relationship, and the stiffness targets of multiple working conditions are synthesized by the compromise programming method. The stiffness objective and the mass objective are combined into the minimumobjective function through the relative value conversion, and the lightweight optimization design of the coach frame is carried out with the maximum frame stress as the constraint condition. The optimized results show that the weight of the frame is reduced by 97 kg, the range is 6.2%, and the maximum stress is reduced by 8% on average. References | Related Articles | Metrics

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Finite Element Modeling and Analysis of the Drive Axle Hub Shaft under Lateral Loading Conditions YAN Zhenhua1 , YU Jilong2 , DU Fei1 , GUO Xiaozhe1 2024, 49(14): 57-62.  DOI: 10.16638/j.cnki.1671-7988.2024.014.011 Abstract ( )   PDF (2285KB) ( )   To predict the stress distribution of the driving axle hub shaft under lateral loading conditions, a force analysis is conducted on the hub shaft, a mechanical model is established, and the contact load between the bearing rolling element and the raceway is determined by combining geometric and mechanical analysis. The load is applied to the inner race of the bearing in the form of a linear load, and a finite element model of the hub shaft is established. Based on this model, the stress distribution of the hub shaft is obtained, and the finite element model is validated using qualitative and quantitative methods. The results show that the finite element modeling method for the hub shaft provided is simpler than the simplified method, and the stress distribution obtained is more reasonable. The larger stress is located in the area with significant changes in structural stiffness, as well as at the root of the thread, the fillet of the bearing installation journal, and the fillet of the hub shaft root. The research results can be used for the design of the guide hub shaft. References | Related Articles | Metrics

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Development of Automotive Chassis Parts Based on Simulation Drive Design YANG Quan, CHEN Lei, CHEN Zhiyang, HU Li, GONG Zhijun, CHEN Zhengkang 2024, 49(14): 63-69.  DOI: 10.16638/j.cnki.1671-7988.2024.014.012 Abstract ( )   PDF (3182KB) ( )   Simulation technology is widely used in the development of automotive chassis parts, a single simulation is transforming into a systematic simulation, the construction of a systematic simulation system is the future development direction of enterprises. This paper puts forward the simulation drive design process and implementation steps according to the drive level of automobile chassis parts enterprises, and takes the actual project as an example to develop products according to the simulation drive design process. The results show that the product developed according to the simulation driven design process can not only meet the product performance index, but also have lower cost. Simulation driven design process is the core process of forward design to realize product development, and it is the core competitiveness of a company and has a pivotal position. References | Related Articles | Metrics

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Optimization Design and Analysis for FSC Racing Aerodynamic Kit HUANG Yuhang, ZHOU Jing* 2024, 49(14): 70-74.  DOI: 10.16638/j.cnki.1671-7988.2024.014.013 Abstract ( )   PDF (2249KB) ( )   Good aerodynamic performance can improve the braking efficiency of the racing, which is the premise of high speed and safe driving of the racing. In this paper, the modeling of the front wing and the rear wing is optimized and analyzed, and the fluid simulation of formula student China (FSC) vehicle is carried out by means of accumulation method and control variable method. It is studied whether the optimization methods such as variable section and increasing chord length could effectively increase downforce and reduce drag. Firstly, the appropriate airfoil is selected in Profili airfoil library, and then the boundary conditions and initial conditions of the model calculation domain are set in Fluent to simulate the actual running conditions of the racing. According to the concept of aerodynamics, a set of aerodynamics kit is designed for the racing racing, and the structural parameters of the kit are further optimized, and then a set of optimal aerodynamic performance design scheme is proposed. References | Related Articles | Metrics

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Synergetic Control Strategy Study of Automobile Active Steering-Braking Systems TANG Hailang 2024, 49(14): 75-78.  DOI: 10.16638/j.cnki.1671-7988.2024.014.014 Abstract ( )   PDF (1074KB) ( )   Aiming to improve the automobile stability under the joint working condition of active steering and braking, a synergetic control strategy between the active front-wheel steering and antilock braking system is studied. A fussy control steering controller and proportion integration differentiation (PID) braking controller are designed and a two degree of freedom steering model and braking dynamic model are established. The control strategy is tested and simulated by using the joint simulation model based on Simulink and Adams/Car. The results show that this synergetic control strategy can effectively reduce the braking distance and improve its stability for automobile under steering and braking conditions. References | Related Articles | Metrics

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Optimization and Research on Outlet Air Temperature Gap of Direct Heat-Pump XU Lei, FAN Hao, XIE Cheng, SU Hao, SU Jianyun 2024, 49(14): 79-84.  DOI: 10.16638/j.cnki.1671-7988.2024.014.015 Abstract ( )   PDF (1402KB) ( )   Direct heat pump can improve the electric energy utilization efficiency and comprehensive thermal management level of electric vehicles. However, in the spring and autumn conditions that require heating and dehumidification, due to the heat coupling of the evaporator and the internal condenser of the direct heat pump, there may be a problem of discontinuity of the outlet air temperature in theory, that is the "outlet air temperature gap". In this paper, a typical direct heat pump system is studied. The upper and lower boundary of the outlet air temperature under the condition of 10~30 ℃ is tested in the enthalpy difference laboratory. The existence of the outlet air temperature crack is confirmed. Through analyzing the factors such as ambient temperature, compressor performance, front inlet air volume and air inlet temperature of heating ventilation air conditioning, a series of optimization countermeasures are proposed and validated, which provides a possible solution for solving the outlet air temperature gap of direct heat pump. References | Related Articles | Metrics

Testing and Experiment

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Modal Analysis of a Pickup Truck Body-in-White MENG Haowei1 , YANG Nianjiong*1 , XIAO Wang2 2024, 49(14): 85-89.  DOI: 10.16638/j.cnki.1671-7988.2024.014.016 Abstract ( )   PDF (2945KB) ( )   Modal research on body-in-white is an extremely important aspect of vehicle development and design, and is a key link of vehicle noise and vibration research. In order to ensure the modal performance of the vehicle body under design requirements, this paper constructs a finite element model based on finite element and experimental modal analysis theory and computer aided design (CAD) model. On this basis, the first ten modes are analyzed and validated through body-in-white modal tests. The experimental modes measured by experiment are compared with the calculated modes, and the frequencies and modes of each mode are analyzed, and improvement suggestions are proposed for them. Using simulation methods to analyze the body-in-white can shorten the development cycle, reduce costs, and have guiding significance for the design and development of white vehicles. References | Related Articles | Metrics

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Research on Control Strategy of AEB System for Autonomous Driving Vehicles LIU Shijiang, CAO Jingsheng, JI Suning, SHA Junliang 2024, 49(14): 90-94.  DOI: 10.16638/j.cnki.1671-7988.2024.014.017 Abstract ( )   PDF (1690KB) ( )   With the rapid development of intelligent driving assistance systems, automated emergency braking (AEB) system is a key part of intelligent navigation, has become an important technical measure to reduce road accidents, and has become an inevitable trend in the development of the automotive industry. At the same time, the working efficiency of AEB system is directly related to the safety of drivers and passengers. This article first analyzes the working principle of the AEB system; Secondly, theoretical analysis will be conducted on the time to collision (TTC) model, Mazda model, and Honda model; Finally, analyzes the braking effect under various working conditions through actual vehicle testing. The results show that, under the premise of not disturbing the driver's normal driving, the TTC model has the best longitudinal collision avoidance performance among these three models; The three models can form a good comparison on the vehicle, and there is no rejection reaction to the vehicle in the models. References | Related Articles | Metrics

Process·Materials

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Analysis of Key Parameters of Wet Carbon Hand Molding Process for Automotive Carbon Fiber Trim ZHANG Na1 , YU Zhenhuan*2, GENG Xilang2 , XU Chengbin2 2024, 49(14): 95-98.  DOI: 10.16638/j.cnki.1671-7988.2024.014.018 Abstract ( )   PDF (1855KB) ( )   Due to the low production efficiency of automotive wet carbon hand molding process, two key parameters of curing temperature and holding time of resin adhesive are discussed in this paper, and Arrhenius equation is used to analyze the relationship between the reaction rate of resin adhesive and temperature, and it is revealed that the reaction rate increased with the increase of temperature.On this basis, carbon fiber resin adhesive is synthesized, and the best key parameter values are determined by four sets of different experimental settings. The experimental results show that when the curing temperature is set at 80 ℃, the curing time takes 4～5 min, but the bubble size and density on the surface of the product are larger; when the temperature is lowered to 70 ℃ and the curing time is increased to 5～6 min, the bubble size and density decrease; at 60 ℃, the curing time is 8～10 min, and the bubble size and density of the product surface are further reduced; if the temperature drops to 40 ℃, the curing time needs 22～25 min, and the bubble size and density on the surface of the product are the smallest. Balancing cost and quality considerations, the study advocates an best curing temperature of 60 ℃ with an insulation time of 9 min, and it has certain reference significance for improving the production efficiency of automotive wet carbon trim. References | Related Articles | Metrics

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Study on Static Torque Management in Small Batch Pilot Production in Final Assembly Plant YANG Weijian, SI Xingyao, WANG Wenhui, QING Long 2024, 49(14): 99-102,130.  DOI: 10.16638/j.cnki.1671-7988.2024.014.019 Abstract ( )   PDF (1026KB) ( )   The static torque management of small batch trial production in the final assembly plant is different from that of sample car trial production, and the quality of fasteners produced in small batch will be significantly superior to that in the sample car stage. In order to standardize the static torque management in the small batch trial production stage of new models in the final assembly plant, this paper proposes to convert the static torque data accumulated during the trial assembly stage of new models by means of the mean value and standard deviation formula. The static torque standard applicable to the small batch trial production stage of the new model can be obtained, that is, the mean value of the static torque data of the sample vehicle is taken as the reference value of the static torque in the small batch trial production stage of the final assembly, and the 6 standard deviations of the mean value is taken as the tolerance. This method can quickly adjust the static torque standard of the whole vehicle to meet the demand of torque supervision for small batch trial production of new models in final assembly. References | Related Articles | Metrics

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The Development Trends of Commercial Vehicle Process Based on CMF Design ZHAO Wei 2024, 49(14): 103-107.  DOI: 10.16638/j.cnki.1671-7988.2024.014.020 Abstract ( )   PDF (3614KB) ( )   In recent years, with the deepening of ecological civilization construction and the upgrading of consumer demand, it is urgent to change the commercial vehicle industry to clean and low-carbon, and innovative technologies to meet diversified market needs. In order to do a good reserve of the process technology, this paper prestudies the development trends of commercial vehicle technology based on color, material and surface finish (CMF) design. The influence and development potential of CMF design on the design and manufacture of commercial vehicle in the future are discussed from the perspectives of market trend, new materials and molding process, advanced coating and surface decoration process. This paper discusses the importance of optimizing interior and exterior decoration design by using new materials and new processes to enhance customer driving experience in high-end market competition, and puts forward innovative ideas in material selection, manufacturing process and surface treatment, aiming at enhancing market competitiveness and brand value of commercial vehicle. References | Related Articles | Metrics

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Analysis and Application of Anti-error and Anti-mixing Methods in Connecting Rod Machining MO Jin, WANG Jiangquan 2024, 49(14): 108-111,154.  DOI: 10.16638/j.cnki.1671-7988.2024.014.021 Abstract ( )   PDF (1942KB) ( )   As a key component of automobile engine, the quality control of the connecting rod in the production process is an important prerequisite for engine quality assurance. This paper mainly studies the application of the quality assurance method of anti-error and anti-mixing in the processing of connecting rod production, including the implementation cases of mechanical error-proofing mechanism, electrical anti-error measures, anti-error and anti-mixing visual detection, and anti-error air tightness detection. To the greatest extent, it eliminates the processing sequence leakage and machine type mixing caused by human and machine factors, improves the quality assurance ability of connecting rod processing, and also provides anti-error and anti-mixing ideas and implementation methods for the production and manufacturing process of related parts in the automobile industry. References | Related Articles | Metrics

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Study on Causes and Control Methods of Hash Marking Mottlting Defects in Automobile Coating Electrophoresis Process LIU Lei, LI Baoliang, CHEN Zihua 2024, 49(14): 112-115.  DOI: 10.16638/j.cnki.1671-7988.2024.014.022 Abstract ( )   PDF (1709KB) ( )   The electrophoretic hash marking is one of the common quality defects in the production process of automotive painting. This type of defect not only affects the appearance quality of the coating but also affects the anti-corrosion performance, and has a significant impact on the on-site production rhythm of the painting workshop. Due to the different shapes and causes of electrophoretic hash marking, this article combines practical work experience to summarize four common types of electrophoretic hash marking on site: uneven dry and wet hash marking, alkaline corrosive hash marking, polluting hash marking, and phosphating corrosion hash marking types and their root causes. A summary study is conducted to eliminate such defects and form on-site control experience for effective control. This article is of great significance for subsequent on-site quality control and personnel indicators. References | Related Articles | Metrics

Use and Maintenance

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Fault Detection Method for Crankshaft and Camshaft Position Sensors of the 2019 Magotan B8L Sedan ZHOU Yanyan1 , SONG Fuming2 , SUN Wenge1 , WU Mingjiang1 , BA Yinliang1 2024, 49(14): 116-120.  DOI: 10.16638/j.cnki.1671-7988.2024.014.023 Abstract ( )   PDF (2423KB) ( )   The continuous updating and iteration of automobile models has brought greater challenges to the automobile maintenance industry, and the automobile engine electronic control system is one of the important parts of the automobile components, and the maintenance of its failure is particularly important. This paper mainly detects and analyzes the fault of the crankshaft and camshaft position sensor of the 2019 Magotan B8L sedan, mainly by using a X431 computer diagnostic instrument to read the fault code, using the FSA740 oscilloscope to read the waveform, and using digital multimeter, and light emitting diode (LED) light to detect the data, so as to accurately determine, investigate and lock the fault point. In this paper, the diagnosis process of the whole testing process is sorted out in detail, which provides basic maintenance ideas for the maintenance industry and teaching in higher vocational colleges. References | Related Articles | Metrics

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Research on Fault Diagnosis of Throttle Position Sensor Based on Magnetic Resistance Principle ZHANG Mingxing, GUO Lina, LV Kai, HAO Kui 2024, 49(14): 121-125.  DOI: 10.16638/j.cnki.1671-7988.2024.014.024 Abstract ( )   PDF (7410KB) ( )   The throttle position sensor is one of the core components for achieving precise control of fuel injection in gasoline vehicles, and the reluctance throttle position sensor is a new type of throttle position sensor. The signal output method of the signal plate and sensor without mechanical contact gives it significant performance advantages such as long service life, stable operation, and low failure rate. With the increasing number of assembled vehicle models, the demand for its detection and maintenance methods and case studies is also increasing. This article takes the Volkswagen Magotan B8L model as an example, first introduces the installation position and function of the reluctance throttle position sensor, then introduces the structure and working principle of the Volkswagen Magotan B8L reluctance throttle position sensor, and finally elaborates on the fault phenomenon, fault analysis, fault diagnosis, and troubleshooting methods of the Magotan B8L reluctance throttle position sensor. Among them, fault diagnosis uses testing and diagnostic tools such as car decoders, oscilloscopes, and multimeters, which have certain reference significance for similar electronic control system fault diagnosis. References | Related Articles | Metrics

Automobile Education

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Exploration of Teaching Practice for Millimeter Wave Radar under the "1+X" System －Taking the Course of Intelligent Automotive Sensor Technology as an Example ZHENG Guocai, JIANG Tao 2024, 49(14): 126-130.  DOI: 10.16638/j.cnki.1671-7988.2024.014.025 Abstract ( )   PDF (1748KB) ( )   Article 20 of vocational education proposes a "1+X" certificate system, and all vocational colleges and majors pay attention to the degree of integration of certificates, while automobiles as a pillar industry in Hefei should pay more attention to the integration of X certificate assessment content, teaching practice and enterprise needs.This paper takes the intelligent connected vehicle detection and operation "1+X" certificate as an example, focusing on the assessment content of millimeter wave radar, explores the teaching and training process of the school, connects the assessment content of X certificate with the requirements of enterprise positions, clarifies the course teaching plan and teaching content, improves the pass rate of student certification, reduces the investment of enterprise talent training time and cost, and has good classroom feedback effect. References | Related Articles | Metrics

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Exploring the Reform of the Modeling Theory Course of Automotive Power Battery in the Context of New Engineering Disciplines LI Junfu, HU Xueli, YU Quanqing, WANG Dafang, ZHANG Qi 2024, 49(14): 131-136.  DOI: 10.16638/j.cnki.1671-7988.2024.014.026 Abstract ( )   PDF (1578KB) ( )   With the rise of a new round of technological revolution, the new energy vehicles and battery industry has seen rapid development, and the demand for professionals in the field of new energy vehicle power batteries continues to grow. To improve the theoretical innovation and practical engineering skills of professionals in power battery research and management, higher demands are put forward for the reform of teaching in the course of vehicle power battery modeling theory. The article discusses the teaching content and reform objectives of courses within the context of the new engineering paradigm, and analyzes the issues present in the current teaching process. Based on this analysis, it proposes strategies for reforming the teaching of vehicle power battery modeling theory courses under the new engineering background. This article explores a training model that deeply integrates scientific innovation with teaching, refines teaching designs, establishes multi-dimensional assessment mechanisms, optimizes practical teaching segments, and constructs a digital teaching library as part of educational reform measures. It aims to cultivate professional talents in new energy vehicle power batteries who are in line with the demands of the new era. References | Related Articles | Metrics

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Research on the Construction of Intelligent Network-connected Automobile Curriculum System Based on "Post Course Competition Certificate" Integration LIU Xiang 2024, 49(14): 137-140,172.  DOI: 10.16638/j.cnki.1671-7988.2024.014.027 Abstract ( )   PDF (1057KB) ( )   With the rapid development of China's intelligent network automobile industry, it is urgent for higher vocational colleges to provide a large number of skilled talents, and the curriculum system is the backbone to support the cultivation of talents. Therefore, under the logic of clarifying the "post course competition certificate", based on the teaching practice of higher vocational colleges, taking the position of intelligent network automobile industry as the starting point, the vocational post skill standard is integrated into the teaching course, and the course content is set according to the post demand. With reference to the intelligent network automobile vocational skill competition, the scoring criteria of the competition is added to the assessment standards of the course practice teaching, so as to promote the course construction by competition. Docking "1+X" intelligent connected automobile vocational skill level exam, passing the exam pass rate to verify the teaching effect of the course. Then realize the reconstruction of the intelligent network-connected automobile curriculum system. Preliminary research shows that the "course racing certificate" should be adjusted in a timely manner according to the changes in positions in order to keep up with the rapid pace of technological development in the intelligent connected automobile industry and improve students' occupational suitability. In turn, the position needs the "course racing certificate" to be consolidated in order to further upgrade. References | Related Articles | Metrics

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The Construction and Application of Curriculum Ideological and Political Integration into Specialized Courses －Taking Automobile Engine Disassembly and Adjustment as an Example ZHANG Qiuxia, CHEN Jiahao, DONG Shanshuo 2024, 49(14): 141-145.  DOI: 10.16638/j.cnki.1671-7988.2024.014.028 Abstract ( )   PDF (1209KB) ( )   Professional courses carry the functions of knowledge imparting, skill training and value guidance, and professional courses of engineering should pay attention to the cultivation of students' craftsman spirit, strengthen the education of engineering ethics, and stimulate students' feelings of home and country, and mission responsibility. Firstly, by analyzing the current situation of ideological and political research on the course of Automobile Engine Disassembly and Adjustment, this paper proposes the idea of ideological and political construction of the course; then constructs the course of Automobile Engine Disassembly and Adjustment according to the ideas of teaching content analysis, ideological and political elements mining, and curriculum ideological and political teaching model construction; finally, taking the disassembly and adjustment of the valve mechanism as an example, the implementation process of ideological and political teaching is introduced. This research has strong practical significance, can effectively promote the ideological and political implementation process of specialized courses. References | Related Articles | Metrics

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Research on the Cultivation Path of Innovation Ability for the Integration of Science and Education of Automotive Major in Higher Vocational Colleges SUN Huan, SONG Weiping 2024, 49(14): 146-149,167.  DOI: 10.16638/j.cnki.1671-7988.2024.014.029 Abstract ( )   PDF (1172KB) ( )   One of the important goals of higher vocational education is to transform technology and skills into productivity. The Opinion on Deepening the Reform of Modern Vocational Education System Construction clearly points out that "integration of science and education" is the "new direction" of modern vocational education system construction. The integration of science and education in vocational automotive majors is also received widespread attention and positive promotion in current educational practice. This article explores the advantages and characteristics of the College of Automotive Engineering, conducts research on the path of cultivating innovative abilities of vocational college students based on the integration of science and education, clarifies the relationship between teaching and research, integrates the development and application of science and technology throughout the entire teaching process, optimizes the teaching team, innovates new models for cultivating abilities, realizes the rational use and allocation of teaching and research resources, and thus improves the quality of education. References | Related Articles | Metrics

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Analysis of the Competence and Quality of Professional Talents in the Automotive Logistics at the "Secondary-Vocational-Undergraduate" Levels from the Perspective of Type Education REN Ling1,2 , ZHU Xianyue2 2024, 49(14): 150-154.  DOI: 10.16638/j.cnki.1671-7988.2024.014.030 Abstract ( )   PDF (1301KB) ( )   With the accelerated advancement of technological innovation and the continuous prosperity of the automotive industry, the significance of the automotive logistics industry as a bridge between automobile production and consumption is increasingly prominent. Vocational colleges, as important bases for cultivating skilled talents, play a crucial role in enhancing the professional capabilities and qualities of students in automotive logistics programs. This paper aims to analyze the current state of professional capabilities and qualities of automotive logistics talents across three levels Secondary-Vocational-Undergraduate of within the framework of type education.It proposes pathways for enhancing the professional capabilities and qualities of automotive logistics talents, thereby promoting the reform and development of vocational education and cultivating technical and skilled talents suitable for the rapid development of the automotive industry. References | Related Articles | Metrics

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Teaching Practice of Digital Control Technology for Automotive Engines from the Perspective of Great Ideology and Politics HUANG Wei 2024, 49(14): 155-159.  DOI: 10.16638/j.cnki.1671-7988.2024.014.031 Abstract ( )   PDF (1249KB) ( )   Deepening the implementation of the curriculum ideological and political construction project is a key measure for vocational colleges to build a new education ecosystem and deepen the reform and innovation of ideological and political courses. It is also an inevitable choice for vocational education to meet the higher requirements of industrial transformation and upgrading for talent cultivation quality. This article starts from the perspective of enhancing the adaptability of automotive major students to their positions, and takes the example of the Henan province curriculum ideological and political demonstration project－the ideological and political construction of Automobile Engine Digital Control Technology course, to explore the guiding significance and specific construction measures of enhancing the adaptability of vocational education for curriculum ideological and political construction, providing a reference basis for the practice of automotive curriculum reform. References | Related Articles | Metrics

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Construction of Structured Teacher Staff for Automotive Engineering Major in Vocational Undergraduate ZHANG Lifeng, WANG Jie* 2024, 49(14): 160-163.  DOI: 10.16638/j.cnki.1671-7988.2024.014.032 Abstract ( )   PDF (986KB) ( )   In current society, the continuous progress and the sustained development of economy effectively stimulate the demand for high-quality professional talents. As the key training bases of applied talents, vocational colleges undertake the mission of providing talents with high professional accomplishment and skills for the society. In the key field of automotive engineering, the professional ability of teachers is directly related to the quality and competitiveness of the talents cultivated. In order to further strengthen the professional quality of automotive engineering professionals, this work takes the construction of automotive engineering teachers as the starting point, combines with the current undergraduate level of vocational education practice experience, puts forward a structured teacher engineering practice ability training model. References | Related Articles | Metrics

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Exploration on Course Reform of Automotive Power System Principle under the Background of "Dual Carbon" SUN Xiuxiu, WANG Gang, CHEN Guang, JING Guoxi 2024, 49(14): 164-167.  DOI: 10.16638/j.cnki.1671-7988.2024.014.033 Abstract ( )   PDF (1036KB) ( )   With the rapid development of new energy vehicles under the background of "dual carbon", the vehicle engineering major in domestic colleges and universities has carried out corresponding reforms from the aspects of training objectives, graduation requirements, curriculum system, continuous improvement and so on. This leads to the incoherence of knowledge system between traditional curriculum and new curriculum, and the decrease of hours of traditional curriculum but the increase of content. Aiming at the curriculum reform of vehicle engineering under the background of "dual carbon", this paper takes the course of automotive power system principle as an example. From the aspects of course content, assessment method, teaching mode, curriculum thinking and politics, curriculum reform measures are proposed to improve the curriculum system of vehicle engineering major, deepen students' mastery and application of professional knowledge, and train vehicle engineering professionals in the new era. References | Related Articles | Metrics

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Research on the Training Mode of International Collaborative Education of Automotive Talents in Local Undergraduate Colleges LUO Tian, LIU Xiaobin* , LI Jing 2024, 49(14): 168-172.  DOI: 10.16638/j.cnki.1671-7988.2024.014.034 Abstract ( )   PDF (1144KB) ( )   In order to actively responding to the national "belt and road" initiative, by leveraging the partners for the advancement of collaborative engineering education (PACE) and the cooperation platform of the international formula student competition, we explore new ideas for the international training of automotive talents. Through cooperation with local automobile export enterprises to deepen the integration of industry, education, and research, local undergraduate institutions discuss international education cooperation strategies suitable for their own realities in four dimensions: transnational higher education, student internationalization, globalization of educational resources, and international teacher exchanges. Especially in the area of transnational automotive professional talent training, the goal is to develop new concepts, paths, models, and methods for the training of international talents adapted to the needs of the automotive industry, to promote the training of automotive talents with an international vision required by export-oriented enterprises by local colleges and universities. References | Related Articles | Metrics

Standards·Regulations·Management

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Interpretation of the Standard Measurement of Copper and Other Elements in Brake Friction Materials HOU Caihong 2024, 49(14): 173-176.  DOI: 10.16638/j.cnki.1671-7988.2024.014.035 Abstract ( )   PDF (1153KB) ( )   Measurement of Copper and Other Elements in Brake Friction Materials (JC/T 2268－ 2023) is officially implemented on July 1, 2024, as a test method standard, it defines the specific test process of heavy metal elements such as copper, lead, cadmium and chromium in brake friction materials, and is the basis for guiding enterprises and third-party institutions to carry out tests and issue test reports. Through the interpretation of the standard, it is conducive to the brake friction material industry enterprises, third-party organizations and other stakeholders to better understand the technical content when using the standard, and it is of great significance to promote the brake friction material industry to turn to green development. References | Related Articles | Metrics