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15 July 2022, Volume 47 Issue 13 Previous Issue   
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New Energy Vehicle
Intelligent Connected Vehicle
Design and Research
Testing and Experiment
Process and Equipment
Automobile Education
Standards Regulations Management
Overview


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New Energy Vehicle

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The Matching of E-motor Systems for New Energy Vehicles LU Ming 2022, 47(13): 1-4.  DOI: 10.16638/j.cnki.1671-7988.2022.013.001 Abstract ( )   PDF (772KB) ( )   As one of the three electric systems representing the core technology of new energy vehicles, the e-motor system is the key device to determine the power output of the vehicle. Whether the e-motor system matches with the vehicle directly affects the power performance, economy, ride comfort and subjective driving experience of the vehicle. Therefore, the e-motor system for the development of new energy vehicles is no less important than the power battery and vehicle control system. In this paper, combined with the technical development trend of the new energy e-motor system in recent years, the technical attributes of the new energy e-motor system as the theoretical basis, the installation space, performance, working environment and other technical requirements of the e-motor system in the development process of new energy vehicles as the starting point, analysis of e-motor system in the matching of new energy vehicles need to pay attention to the key problems and corresponding solutions. References | Related Articles | Metrics

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Body Pole Impact Structure Design of Some Models Electric Vehicle WANG Yong 2022, 47(13): 5-8.  DOI: 10.16638/j.cnki.1671-7988.2022.013.002 Abstract ( )   PDF (820KB) ( )   The country and people pay more and more attention to the electric vehicle safety. According to the C-NCAP managements rule, pole impact has been included in the safety performance of electric vehicles. Therefore, it is necessary to design the body pole impact structure of electric vehicle. Based on the safety performance of electric vehicle pole impact, the simulation analysis model of body column collision structure is established. The structural strength of threshold cavity was increased and the transmission path of impact force was added to meet the requirements of side column collision. Comparing the analysis data of different variable scenarios, after the scheme is implemented, the intrusion amount of the key points of B-column is obviously reduced. The safety performance of the body column collision structure has been greatly optimized and improved. It indicates the correnctness of the direction research, which has an important guiding role for the future research and development design. References | Related Articles | Metrics

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Electric Changing Technology Scheme of a Pure Electric Light Commercial Vehicle XIANG Dongdong 2022, 47(13): 9-11.  DOI: 10.16638/j.cnki.1671-7988.2022.013.003 Abstract ( )   PDF (949KB) ( )   At present, the energy density of power battery is far from reaching the energy density level of traditional fuel. The resulting short driving range seriously restricts the development of pure electric light commercial vehicles. Taking mass production conditions, reasonable cost and convenient replacement as the boundary, a feasible module subbox electrical changing scheme is proposed, and the related systems are analyzed in detail, which provides an effective reference for the design of electric changing scheme of a pure electric light commercial vehicle. References | Related Articles | Metrics

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Application of Electronic Diagnosis Technology to New Energy Vehicles Maintenance TANG Guangcai 2022, 47(13): 12-14.  DOI: 10.16638/j.cnki.1671-7988.2022.013.004 Abstract ( )   PDF (488KB) ( )   With the development of automobile technology, the proportion of new energy vehicles in total production and sales is increasing day by day, so the maintenance of new energy vehicles will be more and more popular. Firstly, this paper analyzes the current situation of the automobile industry, the electronic signals used in new energy vehicles are analyzed. According to the characteristics of electronic diagnosis technology, the application of the technology in the maintenance is discussed for new energy vehicles. Its functions of online diagnosis and remote diagnosis will play an important role in the maintenance of vehicles. References | Related Articles | Metrics

Intelligent Connected Vehicle

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Application on Driving Evaluation of Electric Vehicles Based on Internet of Vehicles Data LI Zonghua 2022, 47(13): 15-20.  DOI: 10.16638/j.cnki.1671-7988.2022.013.005 Abstract ( )   PDF (754KB) ( )   Compared with traditional fuel vehicles, new energy vehicles collect a large number of driving data during operation. Through data mining and analysis, it can provide reference for users' driving habits and the research and development of new energy vehicles. In this paper, a driving behavior evaluation model based on big data of Internet of vehicles is proposed to study the driving behavior of electric vehicle users. Firstly, the driving habit, safety factor and energy consumption are analyzed and studied respectively, and then the characteristic variables of different dimensions are constructed and extracted. Through the logistic regression classification model and scorecard method, the driving habit score, safety score and energy consumption score are output respectively. Finally, an example is applied to verify the results. The results show that the method used in this paper can effectively evaluate the actual driving behavior of users. References | Related Articles | Metrics

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Lane Line Detection Method in Complex Illumination Environment ZHANG Binteng 2022, 47(13): 21-25.  DOI: 10.16638/j.cnki.1671-7988.2022.013.006 Abstract ( )   PDF (2233KB) ( )   In order to solve the problem of lane line detection in complex weather environment on expressway and urban roads, a lane line detection method in complex lighting environment is proposed. This method can better extract the lane line on the road by automatically adjusting the contrast feature of the image in complex lighting environment, and realize the lane line detection in dark and fog environment. Experiments show that the lane line detection and recognition rate of this method is 96.7% in dark environment and 95.2% in fog environment. It has good robustness, accuracy and real-time performance. References | Related Articles | Metrics

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Research on Development Modes of Intelligent Networked Vehicle Test Demonstration Zone WANG Feifei 2022, 47(13): 26-30.  DOI: 10.16638/j.cnki.1671-7988.2022.013.007 Abstract ( )   PDF (717KB) ( )   The development of 10 intelligent networked vehicle test demonstration zones in China has been differentiated. After several years of development, the site construction and testing capabilities of the intelligent connected vehicle test demonstration zone have gradually improved. The development model, management model and operation model of the demonstration zone have gradually become clear, but a mature development model has not yet been formed. This paper analyzes in detail the development modes, management modes, and typical operation modes of 10 intelligent networked vehicle test demonstration areas, and summarizes several typical intelligent networked vehicle demonstration areas that can be replicated and promoted. The development models and operation modes provide a reference for the construction of the country and the local intelligent networked vehicle test demonstration area to further promote the process of upgrading the pilot area of the internet of vehicles in the demonstration area. References | Related Articles | Metrics

Design and Research

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The Structural Strength Performance Optimization of a Light Truck Frame ZENG Xianbo 2022, 47(13): 31-34.  DOI: 10.16638/j.cnki.1671-7988.2022.013.008 Abstract ( )   PDF (1744KB) ( )   In this paper, the causes of the local strength problem of a light truck frame during the reinforced road test certificate are analyzed, and the stress, strain and acceleration of the real vehicle in the test field are tested. It is determined that the torque attenuation and loosening of the container U-bolt is the main cause of the problem, resulting in a sharp mutation in the local stress of the frame and the phenomenon of stress concentration, the topology optimization design is carried out, and the strength performance optimization design of the frame structure was verified by CAE analysis. On the premise of ensuring the improvement of the mechanical properties of the frame, the lightweight goal is realized simultaneously, and the economic benefit is remarkable. References | Related Articles | Metrics

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A Kind of Heavy Commercial Vehicle Combined Pedal Switch Detection Device YANG Shuotian 2022, 47(13): 35-38.  DOI: 10.16638/j.cnki.1671-7988.2022.013.009 Abstract ( )   PDF (1681KB) ( )   This paper introduces a combined pedal signal switch gap adjustment and detection device applied to the general assembly of heavy commercial vehicles. The utility model comprises a box body, the box body is provided with an opening, which is respectively provided with a switch slot hole, a power line inlet, a light indication slot and a harness outlet, the light indication slot is correspondingly connected with the harness outlet with an indicator lamp and a harness connector, the box body is provided with a harness fixing frame, the harness and relay are laid on the harness fixing frame, the upper cover of the box body can be opened upward, and the upper cover is connected with the box body by hinges. The detection device has the advantages of simple structure, easy operation, good visualization, strong universality, small floor area, easy maintenance and replacement, low use cost and low production and expansion cost, it will also provide certain reference for the industry. References | Related Articles | Metrics

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Design of a Multifunctional Sprinkler LI Ming 2022, 47(13): 39-43.  DOI: 10.16638/j.cnki.1671-7988.2022.013.010 Abstract ( )   PDF (2140KB) ( )   With the rapid development of economy and the acceleration of China's urbanization construction, China's requirements for urban environment are getting higher and higher.As one of the necessary vehicles for urban environmental cleaning, the sprinkler has developed from a single water outlet mode to full automation, multi-scene application, green cross operation mode of sanitation, diversified product functions. In this article, through the key core assembly design of sprinkler, vehicle performance check calculation and other aspects of research and discussion, sprinkler performance calculation model and multi-functional pipeline system design method is established. Realized a multi-functional sprinkler products can efficiently meet the needs of road spraying, spray dust suppression, road maintenance, landscaping, emergency fire and other diversified scenarios. The theory of pipeline system design and calculation of the product can be widely extended to the cleaning sanitation vehicle products, with important advancement and innovation. References | Related Articles | Metrics

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Cause Analysis and Optimization of Automobile Chassis Threaded Connection Failure DONG Yanxiao 2022, 47(13): 44-47.  DOI: 10.16638/j.cnki.1671-7988.2022.013.011 Abstract ( )   PDF (2066KB) ( )   Aiming at the problem of abnormal noise of automobile chassis, starting from the principle of bolt connection, through the method of combining theoretical calculation and experiment, the factors of bolt torque attenuation are analyzed, the relevant variables are adjusted and tested, and the corresponding results are found through experiments and real vehicle simulations solution. The stability, safety and comfort of the car's operation are improved. The adopted research method provides some ideas and experience for the suspension structure design, and is suitable for the investigation and treatment of abnormal noise of the automobile when it is affected by a variety of factors. References | Related Articles | Metrics

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The Impact Analysis of Exhaust System on Acceleration Noise Outside Vehicle GU Hainan 2022, 47(13): 48-50.  DOI: 10.16638/j.cnki.1671-7988.2022.013.012 Abstract ( )   PDF (1924KB) ( )   With the continuous increase of vehicle ownership, vehicle noise has become the most important part of urban traffic noise. It’s seriously polluting the urban environment and affecting people's work and life. This paper mainly introduces vehicle test standards and methods through a model example. The key points of muffler quality are found through experimental spectrum analysis and simulation. At last the influence of exhaust system on acceleration noise outside vehicle is discussed by comparing the optimization of muffler before and making sample. It is verified that the air flow velocity in the exhaust system is also one of the key factors affecting the vehicle. References | Related Articles | Metrics

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Disengagement of Transmission Matching Power Take-off with the Front Auxiliary Case MA Yuan 2022, 47(13): 51-56.  DOI: 10.16638/j.cnki.1671-7988.2022.013.013 Abstract ( )   PDF (1785KB) ( )   The twin countershaft transmission with front auxiliary case matches the through power take-off, when the PTO start to work, the auxiliary box disengages frequently. So we analyzes the cause of this failure. Furthermore we improve a new input shaft changing the parameters of spline. Using the new input shaft in a transmission, the disengagement fault is resolved. The results has guiding significance for matching through power take off on the twin countershaft transmission with front auxiliary case. References | Related Articles | Metrics

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Engineering Feasibility of Automobile IP with Different Volume Styles LI Zhaolei 2022, 47(13): 57-62.  DOI: 10.16638/j.cnki.1671-7988.2022.013.014 Abstract ( )   PDF (1014KB) ( )   This paper mainly studies the engineering feasibility of different volume dashboard in automobile, and discusses the development trend of dashboard volume, the engineering constraints that determine the traditional dashboard volume, and how to break and reshape the engineering constraints that meet different volumes. Summarize the internal relationship between dashboard volume and engineering constraints, and sort out the idea of how to analyze and find the determinants affecting dashboard volume and reshape the feasible scheme of the project, so as to realize the engineering feasibility of different volumes. References | Related Articles | Metrics

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Analysis of State Space Model of Electronic Throttle System Based on Nonlinear Factors LU Yang 2022, 47(13): 63-69.  DOI: 10.16638/j.cnki.1671-7988.2022.013.015 Abstract ( )   PDF (1095KB) ( )   There are many nonlinear factors in the mechanical structure of electronic throttle, which is the key technical problem affecting throttle control. The control principle of the electronic throttle control system is analyzed. The torque transmission process of the electronic throttle body is deducted. The nonlinear factors and their respective characteristics in the throttle mechanical structure, such as return spring, air flow impact, coulomb stick slip friction and so on, are puts forward. The key parameters of electronic throttle are identified, and the dynamic equation throttle drive motor, motor shaft, throttle shaft and state space model of electronic throttle system are established. The coefficients in the state space model of typical throttle actuator are calculated. Various parameters in a certain electronic throttle state space model were identified through dynamic characteristic analysis. The state space model of throttle actuator provides a theoretical basis and method for rapid and accurate control of electronic throttle. References | Related Articles | Metrics

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Design Optimization of Automobile Cockpit Assist Arm LI Shujian 2022, 47(13): 70-73.  DOI: 10.16638/j.cnki.1671-7988.2022.013.016 Abstract ( )   PDF (1528KB) ( )   With the rapid development of the automotive industry, the level of automation of the cockpit has gradually increased, then a new challenge to the cockpit's orientation and accuracy is presented. This paper analyzes the characteristics of the cockpit arm from three aspects, including rotation mechanism, automatic off-load mechanism and medium/high compensation, and proposes a low-cost and efficient retrofit scheme. Therefore, the cockpit assist arm can enter the body accurately and quickly, which is an important step for the realization of semi-automatic/automatic booster arm. References | Related Articles | Metrics

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Research on Key Parameters of a Multi-cavity Combined Muffler TIAN Chunjuan 2022, 47(13): 74-77.  DOI: 10.16638/j.cnki.1671-7988.2022.013.017 Abstract ( )   PDF (1041KB) ( )   The research shows that the noise of exhaust system accounts for a large proportion of the vehicle noise. Therefore, reducing exhaust noise is of great significance to improve vehicle performance. To control this part of noise, one is to make technical improvement from the source, improve the working mode of the engine and replace it with other new energy sources, the orther is to install the exhaust muffler. This paper designs a perforated pipe muffler with continuous multi-gun. Through the Virtual Lab simulation software, the diameter of perforated tube, the length of muffler perforated pipe and box, and the structural parameters of its diameter on the silencing performance of muffler are studied. References | Related Articles | Metrics

Testing and Experiment

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Influence of Friction Coefficient on Bolted Joints YANG Wanqing 2022, 47(13): 78-82.  DOI: 10.16638/j.cnki.1671-7988.2022.013.018 Abstract ( )   PDF (1438KB) ( )   Friction coefficient is one of the key factors of bolted jionts. On the basis of introducing the classification and influencing factors of friction coefficient, the influence of friction coefficient on bolt connection is analyzed, including the influence of friction coefficient on tightening torque distribution, axial preload, preload dispersion error. The research results show that the friction coefficient should be controlled in a reasonable range. If the friction coefficient is too small, the bolt is easy to loose, if the friction coefficient is too large, the conversion efficiency of clamping torque is low, and the stick slip effect is easy to appear. Reducing friction coefficient can reduce tightening torque and bolt size. Reducing the range of friction coefficient can reduce the preload dispersion error. The research results have important guiding significance for determining the control range of friction coefficient. References | Related Articles | Metrics

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Response Time Test Analysis of Electronic Control Braking System on Semi-trailer LIU Xiangyu 2022, 47(13): 83-87.  DOI: 10.16638/j.cnki.1671-7988.2022.013.019 Abstract ( )   PDF (1543KB) ( )   As an important means of transportation for long-distance highway transportation, the safety performance of semi-trailer has attracted much attention. At present, the semi-trailer is generally equipped with pneumatic control braking system. In order to improve the braking performance of the vehicle and enhance the safety of the vehicle during driving, the electronic control braking system is gradually applied to the semi-trailer. In this paper, the working principle of the semi-trailer electronic control braking system is described in detail. Compared with the pneumatic control braking system, the electronic control braking system improves the braking safety and system integration. Based on GB 12676—2014, the response time test system of semi-trailer electronic control braking system is designed. The simulation device can meet the test requirements of electronic control circuit and pneumatic control pipeline. A semi-trailer is selected to measure the response time of the braking system. The test shows that the electronic control braking system can effectively reduce the braking response time, accelerate the vehicle's response during braking, and ensure the driving safety of the semi-trailer. References | Related Articles | Metrics

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Multi-body Dynamics Simulation of Washing Machine Reducer Based on ADAMS LI Ruitong 2022, 47(13): 88-92.  DOI: 10.16638/j.cnki.1671-7988.2022.013.020 Abstract ( )   PDF (1297KB) ( )   In real life, the washing machine often vibrates when accelerating and decelerating. In this paper, SolidWorks software is used to model the reducer of washing machine, and the collaborative simulation software ADAMS is used to simulate and analyze the reducer. The influence of flexible body and rigid body on the fluctuation of the whole system during acceleration and deceleration of washing machine is discussed. By comparing the output shaft angular velocity curve fluctuation and angular velocity peak under multi flexible body system, rigid flexible coupling system and multi rigid body system, we can judge the fluctuation influence of flexible body and rigid body on the operation of the whole system, hoping to provide valuable reference or basis for the in-depth research of relevant experts. References | Related Articles | Metrics

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Shift Strategy with the Multi-parameter of Manual Gear Vehicles for Different Test Cycle XU Xiaoliu 2022, 47(13): 93-96.  DOI: 10.16638/j.cnki.1671-7988.2022.013.021 Abstract ( )   PDF (890KB) ( )   Under laboratory conditions, in order to use the accurate shift strategy to do the experiment of the manual gear vehicle's power performance and emission, this paper calculates the gears of the test manual vehicle with multi-parameter, and then uses gear correction strategy to do a feedback correction, and finally gets a set of suitable manual shift strategy with the multi-parameter of vehicles for different test cycle. The shift strategy has very high practical value for test cycle with no clear shift strategy. References | Related Articles | Metrics

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Experimental Study on the Effect of Intake Conditions on NOx Emissions of Different Diesel Engines ZHANG Fan 2022, 47(13): 97-103.  DOI: 10.16638/j.cnki.1671-7988.2022.013.022 Abstract ( )   PDF (2033KB) ( )   The effects of intake temperature and humidity on NOx emission were studied in different cycle conditions, such as ESC, WHSC and WHTC, on the engine bench. The results show that the NOx emission before the catalyst decreases slightly with the increase of inlet humidity in both WHSC and hot WHTC cycles. Adjusting by the NOx correction coefficient, the NOx emission before the catalyst basically remains unchanged after the correction. With the increase of inlet humidity and inlet temperature, NOx emissions after the catalyst of China Ⅵ diesel engine has a tendency to gradually reduce, but the amplitude is small. The aftertreatment system of China Ⅵ diesel engine form a closed loop control, while the SCR system has a high efficiency conversion on NOx emission. Thus, the inlet humidity has a less effect on the NOx emission after the catalyst. References | Related Articles | Metrics

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NVH Performance Test of a Commercial Pickup Truck HU Yong 2022, 47(13): 104-107.  DOI: 10.16638/j.cnki.1671-7988.2022.013.023 Abstract ( )   PDF (1589KB) ( )   In this paper, LMS equipment is used to conduct a detailed Noise, Vibration, Harshness (NVH) performance test and comparative analysis of a basic pickup truck and a modified pickup truck. The NVH noise comparative analysis of the powertrain under idle and acceleration conditions, the vehicle interior noise NVH comparative analysis, the steering wheel vibration NVH comparative analysis and the seat guide rail NVH comparative analysis are carried out respectively. The results show that the NVH noise and vibration level of the modified pickup truck is better than that of the basic pickup truck, which verifies the effectiveness of optimizing the design of powertrain components, and makes positive and effective work to improve the NVH performance of the modified pickup truck. References | Related Articles | Metrics

Process and Equipment

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Automotive Welding Machine Grasp Hand and Fixture Positioning Pin Card Pin Recovery GONG Zaibiao 2022, 47(13): 108-111.  DOI: 10.16638/j.cnki.1671-7988.2022.013.024 Abstract ( )   PDF (6689KB) ( )   In the current production process of large automobile companies, the welding workshop has been covered with fully automatic production, in the process of production release, it is inevitable that there will be gripper positioning pins and fixture positioning pins card pin a situation in which production cannot continue. The paper expounds the positioning theory of gripping hands and clamps, and grasping the hand and clamping station positioning pin card pin problem practical cases. The analysisof the grasping hand, fixture positioning pin card problem in the process of production and of the its solution is discussed in detail. This method has also been verified many times in practice. References | Related Articles | Metrics

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The Causes and Solutions of Incorrect Tightening of Double Mass Flywheel Bolts WANG Shaoheng 2022, 47(13): 112-116.  DOI: 10.16638/j.cnki.1671-7988.2022.013.025 Abstract ( )   PDF (2690KB) ( )   This paper briefly expounds the common unqualified tightening problems of double mass flywheel, investigates and analyzes the actual problem cases, makes data analysis by using corresponding quality tools. Aiming at how to promote the qualification rate of double mass flywheel tightening, we verified the implementation of measures, eventually we replaced positioning jig, optimized the fixed bolts of support tray, and set the reasonable camera angle compensation value allowance of the circle center, and modefication parameters. Finally, the qualification rate of double mass flywheel tightening has been improved by data verification and resalts comparison. References | Related Articles | Metrics

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Penetration Control Method for Single Side V-groove Butt Weld of Thick Plate WANG Guoding 2022, 47(13): 117-121.  DOI: 10.16638/j.cnki.1671-7988.2022.013.026 Abstract ( )   PDF (1553KB) ( )   : butt weld are tested. Through the welding samples after matching the different welding parameters affecting the penetration, the key influencing factors line energy and wire direction are obtained, and then the different levels of line energy and wire direction are tested respectively to verify the effective penetration through metallographic inspection. According to the defect level and appearance quality, the different parameters and the best parameter range for controlling the penetration control of single-sided V-groove butt welding of thick plate are obtained, and the parameter control methods and implementation measures are clarified to ensure the effective penetration of butt weld, which is applied to the production process, improve the product quality and reduce the after-sales fault loss. References | Related Articles | Metrics

Automobile Education

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Course Certificate Integration of Automobile Technical Service and Marketing Specialty under 1 + X Certificate System LIU Qian 2022, 47(13): 122-126.  DOI: 10.16638/j.cnki.1671-7988.2022.013.027 Abstract ( )   PDF (1389KB) ( )   Since the implementation of 1+X certificate system, there is still a lack of detailed and effective implementation scheme for the integration of courses and certificates of various majors. This paper analyzes the differences and relations between the 1+X automobile marketing evaluation and financial insurance service certificate and the talent training system of automobile technical service and marketing specialty, defines the training concept with the academic certificate "1" as the core and the vocational skill level certificate "X" as the attachment, constructs a modular curriculum system, opens integrated courses, adds professional ethics, implements the rotating team teaching and diversified process evaluation standards, and promotes the reform of 1+X course certificate integration of automobile technical service and marketing specialty. References | Related Articles | Metrics

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Teaching and Practice of Automobile Structure Course in the New Era GUO Zhanhong 2022, 47(13): 127-129.  DOI: 10.16638/j.cnki.1671-7988.2022.013.028 Abstract ( )   PDF (1089KB) ( )   In the new era, the country pays attention to the development of the automobile industry, and colleges and universities should closely follow the development of the industry. Automobile structure is the main course in the professional courses of vehicle engineering. The article analyzes the current problems of the Automobile structure course, puts forward that it should keep up with the development of the industry, determine the teaching goals, use information technology to increase teaching methods, combine theory with practice, and achieve integrated teaching of mutual integration, thereby provide reference for high-level automotive undergraduate talents cultivation. References | Related Articles | Metrics

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Exploration of the Integration of Ideological and Political Content in Automobile Identification and Evaluation Courses WANG Pu 2022, 47(13): 130-132.  DOI: 10.16638/j.cnki.1671-7988.2022.013.029 Abstract ( )   PDF (1098KB) ( )   In recent years, the situation at home and abroad has been constantly changing. A variety of social trends exist at the same time. At the same time, the diversity of students is becoming more and more obvious. The effect of pure ideological and political education is not good. Therefore, the country has paid more and more attention to the construction of ideological and political courses. This article makes an in-depth analysis of the characteristics of the automobile identification and evaluation course, current teaching situation and teaching subject, and then puts forward specific methods for integrating this course with ideological and political content, so as to improve the ideological and political education of the course, improve students' ideological and political education, as well as teaching ability of professional teachers in ideological and political education. References | Related Articles | Metrics

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The Problems and Countermeasures of Modern Apprenticeship Talent Training of Automobile Specialty in Higher Vocational Colleges in the New Era JIN Ming 2022, 47(13): 133-137.  DOI: 10.16638/j.cnki.1671-7988.2022.013.030 Abstract ( )   PDF (912KB) ( )   Modern apprenticeship system has been widely carried out in China. As a specific institutional form and institutional carrier, its purpose is to mobilize enterprise resources, explore various forms and cultivate high-quality technical and skilled talents, so as to adapt to the national industrial transformation and upgrading. By analyzing the current situation and difficulties faced by the implementation of modern apprenticeship in China, it is suggested that the national and provincial education authorities should select industry enterprises, focus on the implementation and promotion of modern apprenticeship in automobile major, realize the "integration of three industries", raise the modern apprenticeship to the national level, integrate resources, build a community of interests and destiny of schools and enterprises, build an integrated school enterprise teaching and training base, and promote the reform of "three education", improve the curriculum construction mechanism of apprenticeship enterprises, finally promote the construction of skilled society and promote lifelong vocational education, and fully meet the national needs for industrial transformation and upgrading, so as to form a sustainable development system of modern apprenticeship talent training with Chinese characteristics. References | Related Articles | Metrics

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The Teaching Reform of Fundamentals of Mechanical Engineering Control Based on OBE Concept LV Junyan 2022, 47(13): 138-141.  DOI: 10.16638/j.cnki.1671-7988.2022.013.031 Abstract ( )   PDF (1011KB) ( )   Fundamentals of mechanical engineering control is one of the important courses for mechanical students. In recent years, the state has continuously advocated the education concept of new engineering, engineering certification and Outcome Based Education (OBE). In this paper, the teaching reform of Fundamentals of mechanical engineering control is carried out based on the educational concept of OBE. Analyzes the characteristics and existing problems of the course, and carries out the reform and research on the fundamentals of mechanical engineering control from the curriculum objectives, curriculum design and evaluation system. The teaching practice shows that the teaching effect after the reform is better, which makes clear the direction for the future teaching reform and the construction of first-class courses. References | Related Articles | Metrics

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Construction of Ideological and Political Practice Teaching System for the Course Introduction to New Energy Vehicles in Higher Vocational Colleges ZHU Kening 2022, 47(13): 142-146.  DOI: 10.16638/j.cnki.1671-7988.2022.013.032 Abstract ( )   PDF (1000KB) ( )   In order to respond to the requirements of the state, ideological and political practice teaching in the curriculum should be integrated into the teaching process of the curriculum, guide students to carry forward the spirit of craftsmanship, care about the development of the industry, overcome difficulties, and become composite talents with excellent character and learning. Focusing on the Introduction to New Energy Vehicles of vocational colleges and universities, focusing on the connotation of curriculum ideology, strengthens the curriculum ideology concept of professional course teachers from the aspects of teaching concept, teaching idea, integration point of ideological and political teaching, education method and evaluation, and carries out research on the construction of the curriculum ideological and political teaching system. Clearly establish a curriculum ideological and political development mechanism, increase the curriculum ideological and political training for professional teachers, create the first classroom of "classroom teaching", promote effect evaluation and continuous improvement measures, and put forward the implementation mechanism of Introduction to New Energy Vehicles ideological and political teaching. References | Related Articles | Metrics

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Automotive Engineering Practice Course Reform on "Emerging Engineering Education"and the OBE Mode CHEN Guang 2022, 47(13): 147-150.  DOI: 10.16638/j.cnki.1671-7988.2022.013.033 Abstract ( )   PDF (1298KB) ( )   The professional practice course of automotive engineering is an important link in the implementation of the construction of "emerging engineering education" and the outcomes-based education (OBE) mode personnel training for automotive engineering. According to the characteristics of automotive engineering professional personnel training, with the background of "emerging engineering education", the curriculum objectives of the practice courses are improved under the OBE system. The rich resources and tools on internet are taking full advantage of arrange professional practical and core theory courses crosswise. The existing teaching aids and three- dimensional modeling softwares are integrated from internet to set up a preview process combined with mixed learning assessment. The classroom organization is optimized with "problem-driven" and an refining assessment and evaluation system of "refined and refined examination" is established. The object is to cultivate composite professional talents with strong practical and comprehensive ability. References | Related Articles | Metrics

Standards Regulations Management

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Multidimensional Integrated Online Collaborative Planning of Vehicle R&D Test LI Tao 2022, 47(13): 151-156.  DOI: 10.16638/j.cnki.1671-7988.2022.013.034 Abstract ( )   PDF (2095KB) ( )   Based on the permutation and combination theory and the planning business of vehicle R&D test, this paper discusses how to integrate the index definition, test demand and vehicle demand, establish a multidimensional integrated vehicle R&D test planning data model and business model, develop the planning function of test management system, and realize the multidimensional integrated online collaborative planning of automobile R&D test. References | Related Articles | Metrics

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Application of APQP Management Based on PLM System Function LI Siyuan 2022, 47(13): 157-160.  DOI: 10.16638/j.cnki.1671-7988.2022.013.035 Abstract ( )   PDF (1001KB) ( )   In order to ensure the effectiveness, reliability, timeliness and continuity of the project management process and results, the project manager can control the project by viewing the data generated during the process. This paper explains in detail why Product lifecycle management PLM product life cycle system is used and the advantages of using this system to manage the project. Easier for project managers to track with the help of informatization technology and the implementation of the project supervision and management in the process, systematic methodically archive project information, improve the efficiency of effective communication between project team members, to reduce the communica- tion cost, reduce artificial man-hours, saving project overall budget, project delays because of the change of members environment can be avoided. This paper discusses how to use PLM system to manage the process data of product development project, and what problems should be paid attention to when using PLM system to manage Advanced product quality planning APQP project. Based on the advantages and disadvantages, it is recommended that project management units and managers can achieve the final project objectives with high efficiency and quality by using PLM information system. References | Related Articles | Metrics

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Automatic Configuration Management of Auto Consignment Parts WANG Lianqing 2022, 47(13): 161-164.  DOI: 10.16638/j.cnki.1671-7988.2022.013.036 Abstract ( )   PDF (1146KB) ( )   With the rising of requirement of mass customization and modularity for vehicle development, the configuration audit work of consignment part becomes more and more difficult as consignment part becomes more and more complex. An automatic configuration management method is studied in this paper. The basic definition, module partition method, modular product option definition and automatic configuration audit method of consignment part are discussed in this paper. Finally, the benefits of this method to customize and modular vehicle development are concluded. References | Related Articles | Metrics

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The Application of Ergonomics in Vehicle Design and Production Process GAO Zhenyu 2022, 47(13): 165-168.  DOI: 10.16638/j.cnki.1671-7988.2022.013.037 Abstract ( )   PDF (1630KB) ( )   In vehicle design and manufacturing process, solving the ergonomic issues as early as possible can help to shorten the design cycle-time and save development costs. This Paper introduces ergonomics in vehicle manufacturing, summarizes the ergonomic issue-solving method for both virtual assessment phase and physical build phase. In addition, the development trend of automobile ergonomics is prospect with the help of the inertial motion capture technology. References | Related Articles | Metrics

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Discussion and Research on Building Rootfiles in Embedded Development Based on IMX6ULL XIE Xiangdong 2022, 47(13): 169-171.  DOI: 10.16638/j.cnki.1671-7988.2022.013.038 Abstract ( )   PDF (1042KB) ( )   As the core component of the Linux operating system, the rootfiles system is the most critical step in system on chip (SOC) embedded development. This article mainly studies how to use Buildroot to build the Linux rootfiles system on the advanced RISC machines (ARM) side, which specifically introduces the configuration, construction and use of resource tools. The article uses the IMX6ULL core board as the test platform, and burned the self-transplanted rootfiles system into the board, which enhances the flexibility of rootfiles system construction and improves the efficiency of system-level embedded development. References | Related Articles | Metrics

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Cleanliness Testing Technology of Engine Parts HUANG Wenqin 2022, 47(13): 172-175.  DOI: 10.16638/j.cnki.1671-7988.2022.013.039 Abstract ( )   PDF (3791KB) ( )   In recent years, in order to improve the driving quality of fuel automotive, oems adapt to the increasingly stringent safety emission requirements of laws and regulations, and the cleanliness control requirements are more and more strict.Based on the application practice of engine factories, this paper puts forward optimization solutions on the practical application of new cleanliness testing technology, testing standard and testing process, which provides reference for continuously improving the cleanliness testing level. References | Related Articles | Metrics