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About the Journal
Vehicle & Power Technology (VPT) is a peer‑reviewed academic journal founded in April 1979 and published quarterly. Originally entitled Acta Armamentarii, Section of Tanks, Armored Vehicles and Engines, the journal adopted its current name Vehicle & Power Technology in 2002. It is sponsored by the China Ordnance Society and supervised by the China Association for Science and Technology. Vehicle & Power Technology is committed to advancing the field by closely tracking cutting‑edge scientific research and major national projects. A key priority of the journal is to showcase groundbreaking achievements that represent China’s leading level in vehicle and power technology, with a special focus on special‑purpose vehicles and their power systems.
The journal is steered by a highly distinguished editorial team. The Editor‑in‑Chief, Professor XI Junqiang, is a renowned expert recognized by the National High‑level Talents Special Support Program as a Leading Scientific and Technological Innovation Talent. The Deputy Editor‑in‑Chief, DU Zhiqi, serves as the Chief Scientist for Tanks and Armored Vehicles and is a Council Member of the 9th China Ordnance Society.
Under their leadership, the editorial board ensures the journal maintains the highest standards of academic excellence and relevance. The editorial team is composed of highly qualified professionals, guaranteeing a rigorous peer review process and the publication of high‑impact research that drives the industry forward. The high caliber of the editorial team underpins sustained academic quality and core competitiveness of the journal.
Research on Control Strategy for Cooling System of Special Vehicles in Wide-Range Environment
LI Huiyi;ZHANG Jiahui;CAO Yuanfu;DING Chen;To enhance the thermal management system's adaptability of special vehicles under extreme conditions such as high-altitude, high-temperature, and low-temperature environments, a multi-objective control strategy based on 'feedforward+feedback' for temperature control and energy consumption optimization of the cooling system under wide-range environmental conditions and complex operating conditions was proposed. Firstly, a typical cooling system model for special vehicles was constructed. Secondly, considering the correlation between engine output power and system thermal load, engine power was used as the feedforward signal, combined with the feedback loop to dynamically adjust the coolant temperatures of the high-temperature and low-temperature circuits, designing a 'feedforward+feedback' control strategy and conducting simulation analysis. The simulation results show that the proposed control strategy provides stable temperature response and lower power consumption compared to rule-based control strategies under wide temperature ranges, high altitudes, and rapid changes in engine power. The 'feedforward+feedback' multi-objective control strategy for the cooling system provides theoretical support and technical paths for the efficient and stable operation of the thermal management system of special vehicles under extreme conditions.
Finite Element Analysis of Fluid-Structure Coupling of An Automobile Turbocharger
LONG Yongjie;With the advancement of new energy vehicle technology, turbochargers have been applied to hybrid vehicles, improving fuel efficiency at low speeds, enhancing engine performance, and delivering stronger power output with a smaller engine displacement. The compressor and turbine are the core components of a turbocharger, which are subjected to various factors such as aerodynamic loads, thermal loads, centrifugal loads, fluid density, and blade angles during operation, requiring excellent high-temperature resistance and oxidation resistance. This study conducted a fluid-structure interaction analysis of the turbocharger using Pro/E and Ansys Workbench software. By employing finite element numerical simulation methods and establishing a heat transfer model, the distribution of equivalent stress was investigated. The findings provide valuable references for the design of automotive turbochargers.
Study on Electromechanical Coupling Modeling and Tooth Broken Fault of Electro-mechanical Transmission
GUO Tong;CAO Hongrui;WEI Jiang;To investigate the dynamic response of electromechanical transmission systems under electromechanical coupling effects, a dynamic model of the coupling mechanism in the electromechanical transmission system was established based on dynamic theory and considering nonlinear factors. A permanent magnet synchronous motor model was developed using dynamic mathematical modeling and control theory of motors, and an electromechanical coupling model was constructed by incorporating electromechanical coupling effects. The validity of the proposed model was verified through comparative experiments and simulations under two steering conditions. Based on the electromechanical coupling model, the meshing stiffness under gear tooth breakage fault was calculated using the energy method, and the corresponding fault excitation force was derived and integrated into the electromechanical coupling model. The dynamic response characteristics under tooth breakage fault were analyzed based on simulation results. The results show that when a fault occurs, the motor current signal is modulated by the fault frequency, resulting in numerous fault modulation frequency components in the spectrum. Therefore, the fault model of electromechanical transmission considering electromechanical coupling effects can provide a new solution for fault diagnosis.
Analysis of Obstacle-Crossing Performance for Wheel-track Hybrid Reconfigurable Wheel Vehicle
XIE Xia;ZHOU Kaiqiang;XU Liu;MA Chao;Unit 32726;Based on a off-road vehicle, a wheel-track composite reconfigurable wheel scheme was proposed, and the obstacle-crossing performance of the vehicle equipped with these wheels was investigated. Using dynamic principles, theoretical analyses and calculations were performed for the vehicle crossing trenches and climbing slopes. Simulation models were established in Adams software, and analyses were conducted under trench-crossing and slope-climbing conditions. The results show that simulation values agree well with theoretical values, validating the theoretical analysis and demonstrating the excellent obstacle-crossing capability of the reconfigurable wheel vehicle. This work provides a solid foundation for further optimization and application of the reconfigurable wheel.
Heat Balance Experiment at Variable Different Water Temperature for a Turbocharged Intercooled Diesel Engine
HU Xianshun;XU Feng;JI Wenlong;ZHONG Yue;MA Jie;Unit 32184 of PLA;China North Engine Research Institute (Tianjin);For a 6V turbocharged intercooled electronic unit pump diesel engine, the heat balance test of the bench tests and vehicle tests in plain and plateau areas were consucted separately. The heat balance test of the whole machine was carried out when the return water temperature was controlled at 85 ℃ and 95 ℃ respectively under its external characteristic conditions, so as to obtain the heat distribution of the diesel engine under different working conditions. Further driving tests were conducted on a certain armored vehicle equipped with the diesel engine in both plain areas and at an altitude of 5000 meters on the plateau. By analyzing and studying the heat distribution law of the whole machine, the thermal efficiency of the engine is reasonably evaluated, and a suitable basis is provided for the matching and selection of the heat dissipation system of the whole vehicle. The results of the bench tests show that under the same external characteristics of the diesel engine, the total heat, the effective work heat and exhaust heat are almost not affected by the return water temperature, while the heat taken away by the coolant and the residual loss will be reduced due to the increase of the return water temperature. Compared with the heat dissipation of the oil, the heat carried away by the bulk water and the intercooler decreases significantly with the increase of the return water temperature. The results of the vehicle tests indicate that in plateau areas, the engine′s thermal load increases significantly, and the heat dissipation requirements of the vehicle′s cooling system are much higher than in plain areas. Therefore, considering the baseline capacity of the vehicle′s cooling system, it is necessary to redesign the matching under plateau environmental conditions.
Simulation and Analysis of Integrated Control Technology for a Special Vehicle’s Semi-active Suspension
GAO Jie;JIA Jinfeng;PENG Zhizhao;ZHANG Jian;Focusing on an 11-degree-of-freedom (11-DOF) dynamic model of a semi-active suspension system for a specific 8×8 special vehicle， a coordinated control strategy for the full-vehicle suspension is proposed. Based on the skyhook control theory， this strategy simultaneously addresses vibrations in the vertical， pitch， and roll directions. An 8-wheel random road profile model is constructed and used as the excitation input for simulations. The simulation results demonstrate that at a speed of 60 km/h on a Class D road， compared to a passive suspension system， the adoption of eight independent vertical on-off controllers results in a 22.4% reduction in the vehicle body's vertical acceleration， a 77.9% reduction in the pitch angular velocity， and a 27.3% reduction in the roll angular velocity. This significantly enhances the vehicle's ride comfort.
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Analysis of High-Speed Roaring Sound of Electric Drive System ff New Energy Vehicles
HE Chongguang;LIU Zhou;Lü Yao;PENG Bingrong;LIANG Jiajia;XU Wenling;To address the rumbling noise issue occurring in an 8-pole 48-slot electric drive system of new energy vehicles under high-speed operation， numerical analysis and experimental validation were conducted using Siemens LMS acoustic acquisition software and Fluent fluid simulation software. Through LMS real-vehicle testing and subjective evaluation， it was confirmed that the rumbling noise was primarily caused by first-order noise. Combining with the noise generation mechanism， it was inferred to originate from poor rotor dynamic balance. Fluent simulation of internal oil flow revealed that some coolant entering the rotor accumulated in internal corners without effective drainage， impairing rotor dynamic balance. Based on this， CATIA 3D modeling software was employed to optimize rotor structure by adding oil drainage grooves and radial oil discharge channels. Improved fluid simulations demonstrated no significant oil retention within the rotor. Real-vehicle tests with the optimized rotor showed complete elimination of rumbling noise. The research findings provide valuable references for analyzing and optimizing first-order noise and its harmonic frequency anomalies in electric drive systems of new energy vehicles.
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Analysis and Optimization of Differential Whine Noise
ZHAO Chao;ZHANG Xuming;SU Zhicheng;HE Xiangyue;MENG Fantong;MOU Baojun;Currently， the electric vehicle market places particular emphasis on NVH performance. As one of the key transmission components， the differential naturally plays a crucial role in NVH performance. A certain brand of electric vehicle experienced abnormal noises during low-speed turns. Through comprehensive vehicle inspections and bench comparison tests， it was determined that the issue was caused by friction among internal components of the differential. This article is based on the study of the phenomenon of abnormal noise in differential， analyzing potential factors contributing to vehicle differential noise based on the structure and working principles of the differential. Multiple optimization solutions were formulated based on the stick-slip effect and Stribeck characteristics， and these solutions were validated through differential bench tests. The tests revealed that a molybdenum disulfide coating on the spacer， a PTFE coating on the spacer， and needle roller bearings could effectively mitigate differential noise during turns.
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Design Method of Universal Joint and Drive Shaft Based on Knowledge Engineering
HAN Yingjie;ZHOU Qiuzhong;To address issues such as non-standardized workflows and fragmented knowledge in current universal joint and drive shaft designs， a knowledge engineering-based design methodology has been established. By systematically organizing and integrating design knowledge， a comprehensive knowledge flow has been constructed， covering drive shaft selection， parameter input， material selection， parameter calculation， and verification. Based on the structural relationships between component positions and dimensions， a skeleton model was developed， and parametric model development was completed using CATIA's knowledge engineering， associative design， and parametric technologies. Simultaneously， APDL command files were written based on 3D models， simulation parameter transfer interfaces were designed， and ANSYS batch analysis scripts were developed to automate simulation processes. Finally， a knowledge engineering-based visual workflow customization system was utilized to tailor design knowledge flows， creating an intelligent design approach that integrates design， modeling， and simulation. Practical vehicle parameter validation was conducted to demonstrate the method's effectiveness. Case studies show that this knowledge engineering-based design method enhances efficiency through knowledge reuse， enables intelligent component design， and facilitates the updating and maintenance of design knowledge.
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Hydrodynamic Performance Analysis of Water-Jet-Propelled Amphibious Vehicles Operating in Linear Formation
PANG You-wei;CHEN Tai-ran;LIU Hao-ran;Drawing inspiration from the "Sea Train" concept， this study focuses on the linear formation of water-jet-propelled amphibious vehicles. Numerical simulations， based on the SST k-ω turbulence model and the VOF multiphase flow model， were conducted to investigate the hydrodynamic performance of the vehicle formation under different longitudinal spacing conditions. The analysis specifically emphasizes the effects of longitudinal spacing on the wave interference within the formation and the impact of water-jet propulsion flow on the hydrodynamic characteristics of the formation. The results indicate that at smaller longitudinal spacings， the jet flow from the leading vehicle impacts the trailing vehicle， significantly degrading its hydrodynamic performance. During formation navigation， wave cancellation facilitates the redistribution of the flow field around the vehicles， reducing the navigation resistance of trailing vehicles. Conversely， wave amplification causes detrimental interference to the surrounding flow field， substantially increasing the overall navigation resistance of the formation.
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The state-of-the-art of Hybrid Electric Vehicle
HE Hong-wen,ZHU Jian-guang,LI jian (BIT EV Center of Engineering and technology,Beijing 100081,China)It is one of the main topics of vehicle industry to reduce the air pollution and better the situation of oil shortage.In this paper,the development background of Hybrid electric vehicle(HEV)is described,and the key technology of HEV is presented.The developing tendency of HEV is discussed.
Study of the EV Battery Pack Reliability and Asymmetry
WANG Zhenpo,SUN Fengchun(School of Mechanical & Vehicular Engineering,Beijing Institute of Technology,Beijing100081, China)Through the road test of BJD6100EV which is developed by Beijing Institute of Technology and Beijing PublicTraffic Co.in Beijing,the EV battery pack characteristics are studied.The basic model for the batteries is established for analyzing the basic rules for analyzing the basic rules of charge and discharge.The battery pack reliability and the EV performance influences are mainly discussed,which are caused by single battery inconsistentness of the pack,especially,the solving method.
Analysis of the Energy Computation And Influence Factors of Electric Vehicle Range
XU Gui-bao, WANG Zhen-po, ZHANG Cheng-ning (School of Mechanical and Vehicular Engineering,Beijing Institute of Technology,Beijing 100081,China)Based on the principle that output and consumed energy of the battery set on EV are egual. The computation method of EV range is analyzed and verified by the experiments of HFF6112GK50-EV range. By the farther study on the experiments data, the EV battery set usage evaluation and influence factors of EV range are finally analyzed and some valuable conelusions are obtained.
Research of Automobile Suspension Systems Dynamics Simulation
LI Jun 1, MENG Hong 1, ZHANG Hong kang 1, GU Zhong li 2 (1 China North System Engineering Institute,Beijing 100089,China;2.School of Vehicle & Transportation Engineering,Beijing Institute of Technology,Beijing 100081,China)In this paper,by applying the mechanical system simulation software ADAMS,the full vehicle multi-body model was created,and the vehicle dynamic simulation was carried out.In the mean time,the effects of suspension geometric parameters on steady-state steering characteristics were studied.
Simulation and Analysis on Vehicular Power Performance with Cruise
WANG Rui,HE Hong-wen(National Engineering Laboratory for Electric Vehicle,Beijing institute of technology,Beijing,10081)The power performance is the most basic and important performance for automobiles,which is usually calculated by theoretical formulas.In this paper,a new method for power performance calculation with software Cruise is introduced.The simulation results are compared witch the oues got by theoretical formulas,where the results got by Cruise are proven fo be more precise.
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Overview of the Development of Silicon Carbide Power Devices at Home and Abroad
CHEN Yao;ZHAO Fuqiang;ZHU Bingxian;HE Shuai;In this paper, the performance characteristics of silicon carbide single crystal substrate technology, epitaxial wafer technology, and power devices at home and abroad are summarized and analyzed, and the problems faced in the application of SiC power device products are pointed out: the driving technology and protection technology of SiC power device are still immature,the electromagnetic compatibility problems are not completely solved and the applied circuit topology is not optimized enough. In order to solve these problems, we should develop from the following aspects: reducing the material cost of single crystal substrates and epitaxial wafers, reducing the loss of silicon carbide devices at high temperatures, and developing new packaging technology suitable for SiC power device.
[Downloads: 3,349 ] [Citations: 48 ] [Reads: 38 ] HTML PDF Cite this article
The state-of-the-art of Hybrid Electric Vehicle
HE Hong-wen,ZHU Jian-guang,LI jian (BIT EV Center of Engineering and technology,Beijing 100081,China)It is one of the main topics of vehicle industry to reduce the air pollution and better the situation of oil shortage.In this paper,the development background of Hybrid electric vehicle(HEV)is described,and the key technology of HEV is presented.The developing tendency of HEV is discussed.
Simulation and Analysis on Vehicular Power Performance with Cruise
WANG Rui,HE Hong-wen(National Engineering Laboratory for Electric Vehicle,Beijing institute of technology,Beijing,10081)The power performance is the most basic and important performance for automobiles,which is usually calculated by theoretical formulas.In this paper,a new method for power performance calculation with software Cruise is introduced.The simulation results are compared witch the oues got by theoretical formulas,where the results got by Cruise are proven fo be more precise.
[Downloads: 2,051 ] [Citations: 93 ] [Reads: 25 ] HTML PDF Cite this article
Overview of Research on Localization Methods for Mobile Robots
ZHANG Mengxuan;SU Zhibao;SUO Xudong;Intelligent Mobile Robots Research Institute(Zhongshan);This paper provides an overview of several typical localization methods for mobile robots, and discusses the advantages and disadvantages of each method. Compared with the application limitations of a single sensor, the significance of multi-sensor information fusion technology for localization problems is analyzed. Finally, prospects are proposed for the development of mobile robot localization systems.
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Finite Element Modeling and Simulation Analysis of Bolted Joints
XIN Peng;WAN Yi-qiang;XU Zhuo;In view of the simulation analysis of bolt connection structure,a finite element model for a single bolt connection and a finite element model for the bolt flange are established. Theoretical calculation and simulation analysis show that,after adding the tightening torque,the assembly stress is mainly generated among the bolt screw head,washer and fittings,and the maximum stress value appeared in the nut and screw joints. Modal analysis shows that the bolt pre-tightening force has little influence on the structure. For bolted flange connection structure,the stress variation and distribution caused by the assembly are limited near the bolts. In order to improve the efficiency and accuracy of the simulation calculation,a connection model for an entity bolt is recommended.
[Downloads: 1,818 ] [Citations: 51 ] [Reads: 15 ] HTML PDF Cite this article