International Journal of Automotive Technology

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Vibrational Instability Analysis for Railway Brake System Equipped with Flexible Pad Structure
International Journal of Automotive Technology - Tập 23 - Trang 1117-1125 - 2022
Kwanju Kim, Namsik Yoo, Eunseok Lee
The purpose of this study was to investigate the squeal noise characteristics of a brake system equipped with a flexible pad of a high-speed railway. First, through the dynamometer experiment, the dominant squeal noise frequencies were identified and the relevant frequency range of the analysis model was selected. The analysis model was constructed under the predefined conditions, and the consiste...... hiện toàn bộ
Modeling and Analyzing Individual Driver’s Steering Behavior Based on Rolling Local-Path Planning Decision
International Journal of Automotive Technology - Tập 24 - Trang 389-400 - 2023
Xiaobing Chen, Qiang Yao, Ju Zhang
A good understanding driver behavior is significant in the development of chassis control system and autonomous vehicles. To better simulate human drivers, the driver model with the local path rolling planning decision is developed based on model predictive control algorithm. Firstly, three local path planning methods of straight-line driving, circular-arc driving and B-spline curve driving are de...... hiện toàn bộ
Vehicles Frontal Impact Analysis Using Computer Simulation and Crash Test
International Journal of Automotive Technology - Tập 20 - Trang 655-661 - 2019
Dragos Sorin Dima, Dinu Covaciu
Reconstruction of car accidents is a complex task, with many unknown variables. Among the parameters used to assess the accident severity, in case of a frontal collision between two vehicles, are the change in velocity (delta-v) and the Energy Equivalent Speed (EES). The EES is usually determined based on the deformations. Delta-v can be obtained from the crash pulse recorded with Event Data Recor...... hiện toàn bộ
Vibration path analysis and optimal design of the suspension for brake judder reduction
International Journal of Automotive Technology - Tập 14 - Trang 587-594 - 2013
K. S. Sim, J. H. Lee, T. W. Park, M. H. Cho
Brake judder is abnormal vibration, which is mainly generated by uneven contact between the brake disc and pad. The abnormal vibration from BTV (Brake Torque Variation) is transferred to the suspension and the steering system during braking. In this paper, judder simulation is carried out using a multi-body dynamic analysis program to analyze the relationship between judder and the transfer mechan...... hiện toàn bộ
Effect of fuel choice on nanoparticle emission factors in LPG-gasoline bi-fuel vehicles
International Journal of Automotive Technology - Tập 14 - Trang 1-11 - 2013
A. Momenimovahed, J. S. Olfert, M. D. Checkel, S. Pathak, V. Sood, L. Robindro, S. K. Singal, A. K. Jain, M. O. Garg
Nanoparticle and gas-phase emission factors are presented for a liquefied petroleum gas (LPG) passenger vehicle and are compared to gasoline operation. A bi-fuel LPG-gasoline vehicle certified for use on either fuel was used as the test vehicle so that a direct comparison of the emissions could be made based on fuel choice. These values were considered along with previous studies to determine the ...... hiện toàn bộ
Impingement-Induced Stability Analysis of Intake Manifold Air Jets Using High Speed PIV and POD
International Journal of Automotive Technology - - 2021
Penghui Ge, David L.S. Hung
Lower Extremity Injury of Vietnamese Pedestrian in Crash by a Sedan Using Numerical Simulation
International Journal of Automotive Technology - Tập 24 Số 1 - Trang 247-257 - 2023
Phu Thuong Luu Nguyen, Hùng Anh Lý, Thien Duc Nguyen
Development of an electric active rollcontrol (ARC) algorithm for a SUV
International Journal of Automotive Technology - Tập 13 - Trang 247-253 - 2012
K. Jeon, H. Hwang, S. Choi, J. Kim, K. Jang, K. Yi
Cornering maneuvers with reduced body roll and without loss in comfort are leading requirements for car manufacturers. An electric active roll control (ARC) system controls body roll angle with motor-driven actuators installed in the centers of the front and rear stabilizer bars. A vehicle analysis model developed using a CarSim S/W was validated using vehicle test data. Two ARC algorithms for a s...... hiện toàn bộ
Effect of Engine Start and Clutch Slip Losses on the Energy Management Problem of a Hybrid DCT Powertrain
International Journal of Automotive Technology - Tập 21 - Trang 953-969 - 2020
Enrico Galvagno, Guido Guercioni, Giorgio Rizzoni, Mauro Velardocchia, Alessandro Vigliani
A Dynamic Programming (DP) formulation is developed to find the global optimal solution to the energy management of a parallel Plug-in Hybrid Electric Vehicle (PHEV) equipped with a Dual-Clutch Transmission (DCT). The effects of integrating in the DP formulation the losses accounting for gearshifts and engine starts are studied in terms of the overall fuel consumption; the optimal control solution...... hiện toàn bộ
Reduction in the Head Injury Level due to Junior High School Cyclists Wearing Helmets
International Journal of Automotive Technology - Tập 19 - Trang 1023-1032 - 2018
Yasuhiro Matsui, Shoko Oikawa
We assessed the effect of wearing a junior-high-school helmet when the frontal or lateral part of a helmet impacted the upper part and lower part of the A-pillar of a vehicle at 35 km/h (212 J). The head injury criterions (HICs) of the headform impactor without a helmet were respectively 4530 and 4937. In the case of the headform impactor wearing a junior-high-school helmet, the helmet reduced the...... hiện toàn bộ
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