International Journal of Automotive Technology最新文献_第7页

Research on Non-isothermal Numerical Simulation Algorithm for Tire Rubber Mixing Based on Multiphase Flow Decoupling Principle 基于多相流解耦原理的轮胎橡胶混合非等温数值模拟算法研究

IF 1.6 4区工程技术

International Journal of Automotive Technology Pub Date : 2024-04-06 DOI: 10.1007/s12239-024-00061-3

Guolin Wang, Jingshixiong Wang, Haichao Zhou, Chen Liang

{"title":"Research on Non-isothermal Numerical Simulation Algorithm for Tire Rubber Mixing Based on Multiphase Flow Decoupling Principle","authors":"Guolin Wang, Jingshixiong Wang, Haichao Zhou, Chen Liang","doi":"10.1007/s12239-024-00061-3","DOIUrl":"https://doi.org/10.1007/s12239-024-00061-3","url":null,"abstract":"Rubber mixing plays a very important role in the tire manufacturing process, and the rubber mixing effect affects the quality of the finished tire. Numerical simulation methods are often used to investigate the optimal rubber mixing parameters. To solve the problem of rubber mixing numerical simulation calculations in non-isothermal partial filling conditions when the calculation is difficult, this paper is based on the principle of decoupling to design an algorithm to calculate the rubber temperature in the rubber mixing process. The rubber viscosity and shear rate are processed using the Bird–Carreau model, and the rubber temperature and viscosity are decoupled using the Arrhenius-Law model. Define the heat generation rate of rubber based on the rubber viscosity and shear rate obtained from transient numerical simulation, and obtain the temperature value of each rubber unit. Numerical simulation calculations of rubber compounding under non-isothermal partial filling conditions are realized. To verify the feasibility of the algorithm, the designed algorithm is applied to study the effect of rubber mixing machine speed on the rubber mixing effect. Finally, comparing the numerical simulation results with the experimental results, the effectiveness of this algorithm is proven.","PeriodicalId":50338,"journal":{"name":"International Journal of Automotive Technology","volume":"32 1","pages":""},"PeriodicalIF":1.6,"publicationDate":"2024-04-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140591882","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Experiment on Extinguishing Thermal Runaway in a Scaled-Down Model of an Electric Vehicle Battery 电动汽车电池缩比模型热失控熄灭实验

IF 1.6 4区工程技术

International Journal of Automotive Technology Pub Date : 2024-03-28 DOI: 10.1007/s12239-024-00065-z

Hie Chan Kang

{"title":"Experiment on Extinguishing Thermal Runaway in a Scaled-Down Model of an Electric Vehicle Battery","authors":"Hie Chan Kang","doi":"10.1007/s12239-024-00065-z","DOIUrl":"https://doi.org/10.1007/s12239-024-00065-z","url":null,"abstract":"This study aimed to determine a method to suppress thermal runaway in electric vehicles by passing water directly inside the battery case. A scaled-down model experiment was conducted using a lithium-ion battery pack consisting of six 18650 cells, which is equal to about one-thousandth of an electric vehicle’s charging capacity. The heat generation rate, heat transfer coefficient, and time constant for cooling were measured using a simple model for the cooling methods, thermal runaway stages, and state of charge. When thermal runaway occurred during natural cooling, the battery temperature rose to 630 °C at a rate of 116 °C/s. Through water injection, the thermal runaway was quickly suppressed with a time constant of about 3 s and a heat transfer coefficient of 3400 W/m2·K. The water effectively prevented chain explosions and kept harmful gases emitted from the batteries. It was found that it is difficult to completely suppress thermal runaway using the latent heat of the stagnant water in the spaces between cylindrical batteries. If the experimental results of this study were to be applied to an actual vehicle, it is expected that thermal runaway could be suppressed with a time constant of about 170 s and 1 ton of water.","PeriodicalId":50338,"journal":{"name":"International Journal of Automotive Technology","volume":"71 1","pages":""},"PeriodicalIF":1.6,"publicationDate":"2024-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140315549","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Research on Control Mode Switching of Vehicle Intelligent Suspension Based on DBN and T–S Fuzzy Method 基于 DBN 和 T-S 模糊方法的汽车智能悬架控制模式切换研究

IF 1.6 4区工程技术

International Journal of Automotive Technology Pub Date : 2024-03-26 DOI: 10.1007/s12239-024-00063-1

Chenyu Zhou, Qingshuo He, Xuan Zhao, Qiang Yu, Shuo Zhang, Man Yu

{"title":"Research on Control Mode Switching of Vehicle Intelligent Suspension Based on DBN and T–S Fuzzy Method","authors":"Chenyu Zhou, Qingshuo He, Xuan Zhao, Qiang Yu, Shuo Zhang, Man Yu","doi":"10.1007/s12239-024-00063-1","DOIUrl":"https://doi.org/10.1007/s12239-024-00063-1","url":null,"abstract":"To cover the problem of dangerous state prediction ahead of vehicle rollover and rescue the vehicle under abrupt cornering condition, a dynamic Bayesian network (DBN) merged robust control is developed to balance the vehicle ride comfort and handling performance. To discretize the automobile state attributes and prepare for the prediction, class attribute contingency coefficient (CACC) is adopted to pre-process the data conveniently and establish the category labels. The key contributions of this paper are efficient rollover prediction with probabilistic and numerical representation, a mapping rule from rollover probabilities to T–S fuzzy membership values, and an intelligent objective switchable control between ride comfort and roll stability. The co-simulation method is adopted to verify the effectiveness of this method with passive suspension, semi-active suspension, and optimal control active suspension. It is shown that the DBN-based robust control is able to reduce the roll angle by more than 27% compared to the passive suspension under double-lane change condition and has the best balancing performance. From the perspective of ride comfort testing on bounce sinusoidal roads, the vehicle DBN incorporating robust controllers can effectively reject vibrations and switch control objectives based on its running conditions.","PeriodicalId":50338,"journal":{"name":"International Journal of Automotive Technology","volume":"76 1","pages":""},"PeriodicalIF":1.6,"publicationDate":"2024-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140298481","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effects of Mechanical Injector Replacement on Spray and Combustion Characteristics in an Agriculture Diesel Engine 机械喷油器更换对农用柴油发动机喷雾和燃烧特性的影响

IF 1.6 4区工程技术

International Journal of Automotive Technology Pub Date : 2024-03-25 DOI: 10.1007/s12239-024-00066-y

{"title":"Effects of Mechanical Injector Replacement on Spray and Combustion Characteristics in an Agriculture Diesel Engine","authors":"","doi":"10.1007/s12239-024-00066-y","DOIUrl":"https://doi.org/10.1007/s12239-024-00066-y","url":null,"abstract":"<h3>Abstract</h3> The objective of this study was to analyze through spray and engine experiments the effects of replacing mechanical injectors. The spray characteristics of the mechanical injectors of a used diesel engine and those of new mechanical injectors of the same model were compared. The injection quantity of the new injector was approximately 2–4% higher than that of the used injector owing to the deposit on the nozzle surface. The opening pressure of the used injector was 225 bar on account of the deterioration of the spring inside the injector. This pressure was lower than that of the new injector. The average spray penetration length of both injectors increased similarly up to 2 ms after injection. Owing to deposits on the nozzle surface, the spray angle of the used injectors tended to be smaller than those of the new injectors. The results of engine experiments showed that the new injectors recovered over 90% of engine torque and engine power on account of the increased fuel injection quantity. However, employing the new injectors caused heat loss and fuel consumption rate deterioration. The new injectors effectively reduced NOx and PM emissions by retarding the fuel injection timing and increasing the fuel injection pressure.","PeriodicalId":50338,"journal":{"name":"International Journal of Automotive Technology","volume":"29 1","pages":""},"PeriodicalIF":1.6,"publicationDate":"2024-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140298231","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A Novel Methodology for Inertial Parameter Identification of Lightweight Electric Vehicle via Adaptive Dual Unscented Kalman Filter 通过自适应双非香精卡尔曼滤波器识别轻型电动汽车惯性参数的新方法

IF 1.6 4区工程技术

International Journal of Automotive Technology Pub Date : 2024-03-25 DOI: 10.1007/s12239-024-00071-1

Xianjian Jin, Zhaoran Wang, Junpeng Yang, Nonsly Valerienne Opinat Ikiela, Guodong Yin

{"title":"A Novel Methodology for Inertial Parameter Identification of Lightweight Electric Vehicle via Adaptive Dual Unscented Kalman Filter","authors":"Xianjian Jin, Zhaoran Wang, Junpeng Yang, Nonsly Valerienne Opinat Ikiela, Guodong Yin","doi":"10.1007/s12239-024-00071-1","DOIUrl":"https://doi.org/10.1007/s12239-024-00071-1","url":null,"abstract":"Lightweight electric vehicles (LEVs) possess great advantages in the viewpoint of fuel consumption, environment protection, and traffic mobility. However, due to the drastic reduction of vehicle weights and body size, the effects of inertial parameter variation in LEV control system become much more pronounced and have to be systematically estimated. This paper presents a dual adaptive unscented Kalman filter (AUKF) where two Kalman filters run in parallel to synchronously estimate vehicle inertial parameters and additional dynamic states such as vehicle mass, vehicle yaw moment of inertia, the distance from front axle to centre of gravity and vehicle sideslip angle. The proposed estimation only integrates and utilizes real-time measurements of in-wheel-motor information and other standard in-vehicle sensors in LEV. The LEV dynamics estimation model including vehicle payload parameter analysis, Pacejka model, wheel and motor dynamics model is developed, the observability of the observer is analysed and derived via Lie derivative and differential geometry theory. To address nonlinearities and undesirable noise oscillation in estimation system, the dual noise adaptive unscented Kalman filter (DNAUKF) and dual unscented Kalman filter (DUKF)are also investigated and compared. Simulation with various manoeuvres are carried out to verify the effectiveness of the proposed method using MATLAB/Simulink-Carsim®. The simulation results show that the proposed DNAUKF method can effectively estimate vehicle inertial parameters and dynamic states despite the existence of payload variations.","PeriodicalId":50338,"journal":{"name":"International Journal of Automotive Technology","volume":"181 1","pages":""},"PeriodicalIF":1.6,"publicationDate":"2024-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140298375","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Optimal Gear Shift Control of Two-Speed Dual-Clutch Transmission in Electric Vehicle for Smoothness and Friction Loss Reduction 电动汽车双速双离合器变速箱的最佳换档控制以实现平顺性和减少摩擦损耗

IF 1.6 4区工程技术

International Journal of Automotive Technology Pub Date : 2024-03-25 DOI: 10.1007/s12239-024-00073-z

Jinglai Wu, Shuiting Zhou, Yunqing Zhang, Shilei Zhou

{"title":"Optimal Gear Shift Control of Two-Speed Dual-Clutch Transmission in Electric Vehicle for Smoothness and Friction Loss Reduction","authors":"Jinglai Wu, Shuiting Zhou, Yunqing Zhang, Shilei Zhou","doi":"10.1007/s12239-024-00073-z","DOIUrl":"https://doi.org/10.1007/s12239-024-00073-z","url":null,"abstract":"An optimal shift control strategy for electric vehicles with the two-speed dual-clutch transmission is proposed to reduce the vehicle jerk and friction work during gear shift. The dynamic model of the powertrain considering the stick–slip friction of clutch is built. The developed control scheme is divided into two stages. For the upper level control, a finite-time linear quadratic regulator (LQR) is designed to optimize the target trajectories of torque and speed of motor and clutch by integrating both jerk and friction work in the cost function. Considering that the clutch torque is necessary for calculating the target trajectories but cannot be measured directly, the Kalman filter is employed to estimate the clutch torque. For the lower level control, a combination of torque feedforward and speed feedback controller is constructed to control the motor torque and clutch pressure. To validate the effectiveness of the proposed strategy, comparisons with the strategies based on the polynomial method and unsmooth LQR are carried out. Simulation results and hardware-in-loop test reveal that the jerk and friction work are both reduced, indicating better shift performance.","PeriodicalId":50338,"journal":{"name":"International Journal of Automotive Technology","volume":"233 1","pages":""},"PeriodicalIF":1.6,"publicationDate":"2024-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140298232","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Experimental Study on the Diesel Injection Pressure of Homogeneous Charge Induced Ignition for Multi-cylinder Operation 多缸运行时均质增压诱导点火装置的柴油喷射压力实验研究

IF 1.6 4区工程技术

International Journal of Automotive Technology Pub Date : 2024-03-23 DOI: 10.1007/s12239-024-00069-9

Siyuan Li, Yuhao Han, Kongrong Ma, Wencong Li, Guoxiang Li, Shuzhan Bai, Guihua Wang

{"title":"Experimental Study on the Diesel Injection Pressure of Homogeneous Charge Induced Ignition for Multi-cylinder Operation","authors":"Siyuan Li, Yuhao Han, Kongrong Ma, Wencong Li, Guoxiang Li, Shuzhan Bai, Guihua Wang","doi":"10.1007/s12239-024-00069-9","DOIUrl":"https://doi.org/10.1007/s12239-024-00069-9","url":null,"abstract":"Homogeneous charge-induced ignition (HCII), which uses trace diesel to induce the ignition of gasoline pre-mixture, is characterized by rapid lean combustion and is generally regarded as efficient, clean and controllable. In this paper, a conventional diesel engine has been modified to run all cylinders in HCII mode and the influence of diesel injection pressure (DIP) on overall engine performance was experimentally studied. Results show that the increase of DIP can expand the ignition area of gasoline and enlarge the premixed combustion ratio of diesel, thus promoting rapid combustion and improving brake thermal efficiency. The increase of DIP is beneficial to the control of ignition time and combustion phase, thus reducing the cyclic fluctuation. The increase of DIP can effectively reduce the emission of total hydrocarbon, carbon monoxide and smoke, while the emission of nitrogen oxides (NOx) is insensitive to the change of DIP, so the trade-off relationship between NOx and smoke disappears. However, excessive DIP will still lead to increased combustion noise, and deteriorated combustion quality caused by too less inducing diesel, etc. The appropriate value is about 1000 bar within the test range.","PeriodicalId":50338,"journal":{"name":"International Journal of Automotive Technology","volume":"31 1","pages":""},"PeriodicalIF":1.6,"publicationDate":"2024-03-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140204044","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Vehicle’s Lateral Motion Control Using Dynamic Mode Decomposition Model Predictive Control for Unknown Model 利用未知模型的动态模式分解模型预测控制实现车辆侧向运动控制

IF 1.6 4区工程技术

International Journal of Automotive Technology Pub Date : 2024-03-23 DOI: 10.1007/s12239-024-00074-y

Guntae Kim, Chaehun Park, Cheolmin Jeong, Chang Mook Kang, Jaeil Cho, Hyungchae Lee, Jaeho Lee, Donghyun Kang

{"title":"Vehicle’s Lateral Motion Control Using Dynamic Mode Decomposition Model Predictive Control for Unknown Model","authors":"Guntae Kim, Chaehun Park, Cheolmin Jeong, Chang Mook Kang, Jaeil Cho, Hyungchae Lee, Jaeho Lee, Donghyun Kang","doi":"10.1007/s12239-024-00074-y","DOIUrl":"https://doi.org/10.1007/s12239-024-00074-y","url":null,"abstract":"In this paper, we present a data-driven modeling method for lateral motion control of unknown vehicle models. Vehicle’s motion can be modeled linearly but this model has complex and nonlinear characteristic. Therefore, it is necessary to know the exact information of the car chassis and requires a knowledge and understanding of dynamics. To solve these drawbacks, we linearly represent full vehicle's lateral dynamics which include nonlinear behavior using dynamic mode decomposition (DMD), one of the data driven modeling methods. To determine the validity of the model obtained using the DMD method, we conducted a simulation of the comparison of the output states between the existing model and the model obtained through DMD modeling, using the scenario of a dynamic maneuver called a double line change during lateral motion of a vehicle. After determination of validation is completed, we designed a lane keeping system by applying a model predictive control to specifically evaluate the model of the proposed method. Performance was derived by comparing the error caused by the vehicle driving on the course with the controller of the simulation. The performance of the proposed approach has been evaluated through simulations and is useful when the model is inaccurate.","PeriodicalId":50338,"journal":{"name":"International Journal of Automotive Technology","volume":"9 1","pages":""},"PeriodicalIF":1.6,"publicationDate":"2024-03-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140204046","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Dimensional Analysis of Ground Vehicle in Extreme Maneuver Scenarios 极端机动情况下地面车辆的尺寸分析

IF 1.6 4区工程技术

International Journal of Automotive Technology Pub Date : 2024-03-22 DOI: 10.1007/s12239-024-00067-x

Yeayoung Park, Changsun Ahn

引用次数: 0

Analysis of Steering Performance for Wheel-Track Composite Vehicle Based on New Differential Steering Mechanism 基于新型差动转向机制的轮轨复合车辆转向性能分析

IF 1.6 4区工程技术

International Journal of Automotive Technology Pub Date : 2024-03-21 DOI: 10.1007/s12239-024-00062-2

Yueye Li, Shengzhuo Yao, Xinbo Chen, Qifan Ran, Jianbo Feng

{"title":"Analysis of Steering Performance for Wheel-Track Composite Vehicle Based on New Differential Steering Mechanism","authors":"Yueye Li, Shengzhuo Yao, Xinbo Chen, Qifan Ran, Jianbo Feng","doi":"10.1007/s12239-024-00062-2","DOIUrl":"https://doi.org/10.1007/s12239-024-00062-2","url":null,"abstract":"To solve the complicated steering control of small vehicles in the agriculture and difficult steering on complex roads, this study designed a wheel-track composite vehicle. The vehicle incorporated a novel power differential steering mechanism with dual driving, enabling steering through the differential rotation of the rear two wheels. The vehicle is simple to control, small in size, and is able to work under the conditions of complex roads, such as hills, mountains, and muddy land. The study initially focused on presenting the design, theoretical analysis, and dynamic simulation analysis of the power differential steering mechanism with dual driving. Subsequently, the vehicle underwent modeling and simulation using UG software to validate the reasonability of the values. Finally, utilizing test data, four mathematical models for the actual steering radius of the vehicle on four road surfaces were derived through neural network fitting. The maximum relative error between the model results and the actual steering radius value was reported to be 3.53%. The advantages of the vehicle included continuous radius steering, deceleration and torsion increase, differential lock, etc. This made it well-suited for applications in all-terrain military and civilian vehicles, as well as various special equipment mobile platforms equipped with walking devices.","PeriodicalId":50338,"journal":{"name":"International Journal of Automotive Technology","volume":"19 1","pages":""},"PeriodicalIF":1.6,"publicationDate":"2024-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140204295","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0