International Journal of Automotive Technology Impact Factor & Information

Publisher: Hanʼguk Chadongchʻa Konghakhoe, Springer Verlag

Journal description

The Korean Society of Automotive Engineers (KSAE) publishes the international journal for the dissemination of original research in all fields of AUTOMOTIVE TECHNOLOGY and ENGINEERING. The International Journal of Automotive Technology (IJAT) from KSAE is open to all researchers in the world for contribution, review, and publication. The contribution to this journal will exchange ideas among researchers in different parts of the world and also among researchers who emphasize different aspects of the foundations and applications of the field. The IJAT invites invaluable research results in the areas of automotive engineering

Current impact factor: 0.97

Impact Factor Rankings

2015 Impact Factor Available summer 2016
2014 Impact Factor 0.969
2013 Impact Factor 0.821
2012 Impact Factor 0.69
2011 Impact Factor 0.606
2010 Impact Factor 0.511
2009 Impact Factor 0.517
2008 Impact Factor 0.515
2007 Impact Factor 0.476
2006 Impact Factor 0.778
2005 Impact Factor 0.9

Impact factor over time

Impact factor

Additional details

5-year impact 0.95
Cited half-life 4.30
Immediacy index 0.06
Eigenfactor 0.00
Article influence 0.23
Website International Journal of Automotive Technology website
ISSN 1229-9138
OCLC 213486205
Material type Document, Periodical, Internet resource
Document type Internet Resource, Computer File, Journal / Magazine / Newspaper

Publisher details

Springer Verlag

  • Pre-print
    • Author can archive a pre-print version
  • Post-print
    • Author can archive a post-print version
  • Conditions
    • Author's pre-print on pre-print servers such as
    • Author's post-print on author's personal website immediately
    • Author's post-print on any open access repository after 12 months after publication
    • Publisher's version/PDF cannot be used
    • Published source must be acknowledged
    • Must link to publisher version
    • Set phrase to accompany link to published version (see policy)
    • Articles in some journals can be made Open Access on payment of additional charge
  • Classification
    ​ green

Publications in this journal

  • International Journal of Automotive Technology 11/2015; In Press.
  • [Show abstract] [Hide abstract]
    ABSTRACT: The interaction of the vehicle and steering system is important to evaluate the vehicle on-centre handling. To analyse the vehicle and steering system dynamics at small steering wheel angle inputs a methodological approach to validate a simulation model is developed in this paper. The presented model is focused on the description of the major on-centre handling phenomena and characteristics. For the validation of the model adjusted test manouevres and a certain procedure to achieve highly reproducible measurement data are described. Due to the collected measurement data it is possible to describe the vehicle on-centre behaviour and to validate the overall model in a phased manner and more exactly. The results show the importance of the steering system characteristics and its influence on the on-centre handling regarding small steering wheel angles at low frequencies. Next to the steering system friction and elasticity the influence of the vehicle and steering system hysteresis loop is presented.
    International Journal of Automotive Technology 10/2015; 16(5). DOI:10.1007/s12239-015-0076-4
  • [Show abstract] [Hide abstract]
    ABSTRACT: HST is step-less speed changer that exploits fluids, the neutral valve controlling the pressure in the circuit of the HST is installed inside the transmission to supply or to cut-off power to the vehicle. A ‘jerk’ occurred in tractors, this was possibly triggered by the neutral valve reacting sensitively to external loads or disturbansces attributable to the working environment. To examine the cause, type, pressure, and range of frequency the ‘jerk’ experiments were carried out under various conditions. To suppress the ‘jerk’ caused by the sensitivity of the neutral valve, commercial software ‘SimulationX’ was employed to develop an analytic model so a neutral valve that could suppress the ‘jerk’ caused by the sensiticity of the neutral valve that could suppress the ‘jerk’ in the range of frequency that preciously triggered the ‘jerk’ could be developed. Based on results obtained from the analyses, the neutral valve was tuned and it was experimentally that the ‘jerk’ had disappeared.
    International Journal of Automotive Technology 10/2015; 16(5). DOI:10.1007/s12239-015-0079-1
  • [Show abstract] [Hide abstract]
    ABSTRACT: A system of electromagnetic semi-active suspension reclaiming energy (ESASRE), with an novel control varying charge voltage in steps (CVCVIS) based optimal integrated controller, is newly proposed to improve ride comfort and energy reclaiming. The proposed CVCVIS is built by changing the number of battery packs. The dynamic model of the semiactive suspension reclaiming energy is established first, which fully accounts for the non-linear characteristics of the damping actuator reclaiming energy (DARE). The parameters of DARE are decided by a compromise between ride comfort and manufacturing cost, with consideration of installation convenience. A integrated control system for ESASRE includes a controller for calculating the real-time ideal control force based on optimal linear quadratic Gaussian (LQG) control and the other for calculating the number of charging batteries to obtain the real-time actual control force using the proposed quasilinear relation function. Performance comparisons are implemented using three suspension types: ESASRE, the passive suspension, and the ideal active suspension. The performance index of ESASRE is 19.8% lower than that of the passive suspension, and 3.82% higher than that of the active suspension. With ESASRE, the power flowing into the battery pack accounts for 77.72% of the total vibration energy absorbed by DARE.
    International Journal of Automotive Technology 10/2015; 16(5). DOI:10.1007/s12239-015-0077-3
  • [Show abstract] [Hide abstract]
    ABSTRACT: A quasi-dimensional model is developed with the surrogate mechanism of isooctane and n-heptane to predict knock and emissions of a homogeneous GDI engine. It is composed of unburned and burned zone with the latter divided into multiple zones of equal mass to resolve temperature stratification. Combustion is based on turbulent entrainment and burning in a spherically propagating flame with the entrainment rate interpolated between laminar and turbulent flame speed. Validation is performed against measured pressure traces, NOx and CO emissions at different load and rpm conditions. Comparison is made between predictions by the empirical knock model and the chemistry model in this work. There is good agreement for pressure, NOx, CO and knock for the test engine. Promising results are obtained through parametric study with respect to octane number and engine load by the chemistry knock model.
    International Journal of Automotive Technology 10/2015; 16(5). DOI:10.1007/s12239-015-0089-z
  • [Show abstract] [Hide abstract]
    ABSTRACT: An optimal partition layout inside an expansion chamber muffler with an offset inlet/outlet is systematically designed by using topology optimization to achieve the desired characteristics in terms of acoustics and fluid mechanics. To that end, a partition volume minimization problem is formulated by applying acoustical and flow topology optimization methods. The partition volume is set as an objective function with constraints imposed on the target values of the transmission loss and pressure drop. The finite element method is employed for the acoustical and flow analyses. A design variable is assigned to each finite element such that it changes continuously between 0 and 1 to determine the state of the associated finite element. The design variables are updated during the optimization process and parameterized to converge to 0 or 1 at the end of the process. Finite elements with design variables of 1 build up rigid partitions which are optimally placed to achieve the target values of transmission loss and pressure drop. Different optimal partition layouts are obtained depending on the target frequency, the target values of transmission loss and pressure drop, and the initial values of the design variables. An experiment-based validation strongly supports the validity of the proposed muffler design method.
    International Journal of Automotive Technology 10/2015; 16(5). DOI:10.1007/s12239-015-0090-6
  • [Show abstract] [Hide abstract]
    ABSTRACT: This paper presents an unified chassis control (UCC) with electronic stability control (ESC) and active front steering (AFS) for under-steer prevention. Even if the previously proposed UCC gives good performance using AFS, there are still chances to generate severe under-steer situation. To cope with the under-steer situation caused by AFS, it is necessary to limit the use of AFS. For this purpose, new optimum yaw moment distribution scheme is proposed. Through simulation on vehicle simulation software, CarSim®, the proposed method is shown to be effective for under-steer prevention.
    International Journal of Automotive Technology 10/2015; 16(5). DOI:10.1007/s12239-015-0078-2
  • [Show abstract] [Hide abstract]
    ABSTRACT: Although various Advanced Driver Assistance Systems (ADASs) have been developed to assist drivers, their performances and driver acceptances in China have not been well tested and analyzed. This study aims to examine how do driver gender, age, and aggression affect the performances and driver acceptances of typical ADASs by means of Field Operational Tests (FOTs), including FCW (Forward Collision Warning), LDW (Lane Departure Warning), and SBZA (Side Blind Zone Alert). Thirty-three participants were recruited to drive an equipped vehicle on the test route in and around Beijing City. Vehicle states, environmental information, and driver feedback were recorded by CAN bus, cameras, and post-drive questionnaires. The test results showed that the alert frequencies of FCWs and LDWs increase in higher speed traffic scenarios, whereas that of SBZA declines. Driver acceptance rate of SBZA ranks the highest, with FCW ranking the second and LDW being the last. Driver gender, age, and aggression effects were analyzed in details, showing their relationships with total alert times, alert times per 100 km, and driver acceptance rate of each system. The findings are helpful for future development of ADASs for automotive industry
    International Journal of Automotive Technology 10/2015; 16(5). DOI:10.1007/s12239-015-0075-5
  • [Show abstract] [Hide abstract]
    ABSTRACT: Tires perform important roles, such as supporting weight and generating forces during accelerating or braking. However, the direct acquisition of valuable data from tires is limited because of the nonlinearity and complex composition of tires. Recently, an intelligent tire system was developed to obtain tire-related variables directly from tire strain. The strain of the tire is measured using a strain sensor; strain is then transformed to other valuable variables, such as the vertical load and the road friction coefficient. However, to develop the conversion logic needed to obtain tire-related variables from the strain, costly and extensive experiments are needed. In this study, we propose a novel tire model and an intelligent tire simulation to reduce the effort and cost for developing an intelligent tire system. Based on experimental data, a tire model, one that can reflect the relationships between driving conditions and tire strain, was derived. And, using a set of polynomial equations comprised of the decisive parameters, a simple algebraic model was developed to yield light computational load. Finally, it was verified that the proposed tire model can correctly estimate not only the tire strain but also the 1st differential values of tire strain.
    International Journal of Automotive Technology 10/2015; 16(5). DOI:10.1007/s12239-015-0088-0
  • [Show abstract] [Hide abstract]
    ABSTRACT: This paper proposes optimization of a mounting position and angle for vehicle RKE antennas. To take into consideration the platform effect that degrades the radiation characteristic of the antenna, both interior and exterior vehicle structures are re-modeled as piece-wise mesh elements in a full-wave electromagnetic (EM) simulator. The optimum placement is found by evaluating radiation characteristics for all possible placements, and its average gain is improved by 4.7 dB, while the minimum gain is increased by 8.4 dB, compared to the conventional placement. The results demonstrate that the proposed method is suitable for maximizing the reading distance of the antenna by minimizing the platform effect.
    International Journal of Automotive Technology 10/2015; 16(5). DOI:10.1007/s12239-015-0084-4
  • [Show abstract] [Hide abstract]
    ABSTRACT: Dual-loop exhaust gas recirculation (EGR) with variable geometry turbocharger (VGT) is an effective technique to simultaneously control intake manifold conditions (pressure, temperature, and burned gas mass fraction) in Diesel engines. To address the control problem for this highly coupled and complicatedly dynamic multi-input multi-output (MIMO) system, this paper proposed a control method with decoupled-feedforward loop. Through investigating the dynamics of airpath loop system, a linear-quadratic regulator (LQR) with a decoupled-eedforward control strategy was utilized for the control of the intake manifold conditions. The proposed method was validated and compared with the conventional LQR method via a high-fidelity GT-Power model.
    International Journal of Automotive Technology 10/2015; 16(5). DOI:10.1007/s12239-015-0074-6
  • [Show abstract] [Hide abstract]
    ABSTRACT: In recent years there has been an increase in the number of vehicle start ability and operability issues during winter condition. Among the diesel cold properties, CFPP was generally used to provide a reference temperature for cold weather operability with diesel fuels for prediction of diesel cold performance. However, CFPP has been unlikely to have acceptable low temperature operability because of too much wax particles accumulated on the surface of the fuel filter in CRDI system. Otherwisely, preventing wax plugging of fuel filter in cold weather condition, cold flow characteristics should be also determined by fuel delievery system. The intent of this study was to find significant design variables for diesel cold performance and propose the cold performance index to predict the diesel vehicle cold weather problem by use of design of experiment.
    International Journal of Automotive Technology 10/2015; 16(5). DOI:10.1007/s12239-015-0082-6
  • [Show abstract] [Hide abstract]
    ABSTRACT: We show that computational load can be reduced when a programmable co-processor is used for a time-critical system design. We analyze the real-time performances of a diesel engine management system by applying a programmable timer co-processor. In order to verify the performances caused by the co-processor, we investigated the timing parameters such as the process time, execution period, and processor utilization, according to a changing task structure. The processor utilizations of the tasks were found to be reduced within the range of 0.65% to 33.68% on worst-case execution period condition. These results show that an appropriate task construction considering the co-processor characteristics can lead to improvement in real-time performance from parallel processing on par with a multicore processor system even under limited conditions.
    International Journal of Automotive Technology 10/2015; 16(5). DOI:10.1007/s12239-015-0083-5
  • [Show abstract] [Hide abstract]
    ABSTRACT: Argon (Ar) is the third most common gas in the Earth’s atmosphere. About 700,000 tonnes of Ar are produced worldwide every year. Ar is inexpensive since it occurs naturally in air, and is readily obtained as a byproduct of cryogenic air separation in the production of O2 and N2. To decrease NOx emissions and slightly improve the thermal efficiency, Ar has been used in ICE before. However, it appears that it was used only in diesel and gasoline engines. This paper presents the effects of Ar dilution on the thermal efficiency and NOx emissions of a 6-cylinder natural gas SI engine. Ar was added into the intake charge at fixed boundaries under 1450 rpm and 50% load. The results show that the thermal efficiency increases first and then decreases with NOx emissions being decreased significantly as the dilution ratio (DR) of Ar increases. The thermal efficiency peaks at 9.8% DR with NOx emissions being decreased by 31.1%. At the maximum DR (18.4%), the thermal efficiency decreases by 0.3% with NOx emissions being decreased by 64.0%. Furthermore, from comparative experimental results it can be concluded that Ar dilution is superior in maintaining higher thermal efficiencies than CO2 and N2 for NG engines.
    International Journal of Automotive Technology 10/2015; 16(5). DOI:10.1007/s12239-015-0073-7
  • [Show abstract] [Hide abstract]
    ABSTRACT: This paper presents an analysis of the vehicle structural performance in the event of a small-overlap frontal impact (SOFI), based on a computer-based crash simulation model. The vehicle model was used for SOFI simulation according to real small-overlap test conditions. The crash simulation results were used to evaluate the overall vehicle structure through a comparison of intrusion measurements with the rating guidelines of the Insurance Institute for Highway Safety. The parts sensitive to a small-overlap crash were confirmed. Thickness optimization was conducted to strengthen the rocker panel, A-pillar, and lower hinge pillar in order to improve the vehicle structural performance in the event of a SOFI. The best values among the variables were chosen for the new design. The crash analysis using finite element models showed that the most serious deformation occurred to the A-pillar. In this study, the grade of the overall structure was changed from “poor” to “marginal”.
    International Journal of Automotive Technology 10/2015; 16(5). DOI:10.1007/s12239-015-0081-7
  • C. Ma · D. He · D. Xie · F. Yu · Z. Luo
    [Show abstract] [Hide abstract]
    ABSTRACT: To enhance the trafficability of semi-track air-cushion vehicle (STACV), a prototype is manufactured and a heirarchy controller is designed. The control objectives are, 1) to minimize the total power consumption; 2) to follow the driver’s commands and maintain the body attitude; 3) to assign and realize the generalized forces. The controller is proposed by using carefully designed controller configuration, neural network, Model Predictive Control (MPC) method, hybrid generalized extremal optimization (HGEO), etc. Finally, the effectiveness of the proposed controller is verified by experiments under two typical operation conditions.
    International Journal of Automotive Technology 08/2015; 16(4). DOI:10.1007/s12239-015-0059-5
  • [Show abstract] [Hide abstract]
    ABSTRACT: An experimental study was performed to investigate the effect of pilot injection on engine noise using a single cylinder combustion ignition engine. The engine rotary speed was fixed at 1200 RPM and a 10-mg quantity was injected at a pilot injection ratio of 1:9, 2:8, or 3:7. The engine performance parameters were calculated from the combustion pressure data acquired by a piezoelectric transducer (6057A80, Kistler), which was placed in the location of the glow plug. Engine noise was measured at a distance and height of 1 meter each from the engine for 9-10 seconds and analyzed using a commercial sound analysis program. By analyzing in-cylinder pressure and sound quality metrics, the following conclusions were obtained. The frequency analysis showed that the combustion noise was distributed at the frequency bands from 1100 Hz to 1900 Hz and from 2100 Hz to 2900 Hz. Pilot injections lowered the maximum rate of pressure increase, and the trend of the maximum pressure rise rate varied significantly according to injection pressure. The maximum pressure rise rate exhibited a linear relationship with sound level and loudness. Thus, the pilot injection strategy appeared to improve engine noise characteristics.
    International Journal of Automotive Technology 08/2015; 16(4). DOI:10.1007/s12239-015-0058-6