International Journal of Automotive Technology

ARTICLE Improvement of De-NOx Performance of a SCR System by Dual-Point Ammonia Injection in a Diesel Engine
Selective catalytic reduction (SCR) catalysts is used widely to reduce NOx emissions from diesel engines. However, improvements in de-NOx performance are required to meet future standards of near-zero NOx emissions. This study examines the effectiveness of dual-point NH3injectio...

ARTICLE Diagnosis of EV Gearbox Bearing Fault Using Deep Learning-Based Signal Processing
The gearbox of an electric vehicle operates under the high load torque and axial load of electric vehicles. In particular, the bearings that support the shaft of the gearbox are subjected to several tons of axial load, and as the mileage increases, fault occurs on bearing rollin...

ARTICLE Load Factor Characteristics of 200 kw Class Excavators in Real-Work Operation Mode
To improve emissions inventory, design a real-work operation mode that simulates the operating characteristics of an excavator. The test was conducted at a specialized construction machinery test site to maintain constant operator and soil conditions. Engine speed and actual eng...

ARTICLE Effective Mechanical Properties of an Innovative Module-Free Li-Ion Battery Pack Integrated with Honeycomb Cells and Optimum Design for Enhanced Crash Energy Absorption
To create advanced lithium-ion battery packs (BP) that are both lightweight and durable in crashes, an innovative honeycomb BP design has been developed. This design involves inserting cylindrical lithium-ion battery cells into a honeycomb cell core, eliminating the need for tra...

ARTICLE Eco-driving Profile Optimization by Dynamic Programming for Battery Electric Vehicles
Although full automation has not yet been achieved, automated vehicles are a valid research area. Not only would automated vehicles provide ultimate driver convenience, but they would maximize energy efficiency by eliminating undesired human driving behaviors and optimally contr...

ARTICLE Study on the Necessity of Real-World Driving Tests for Passenger Electric Vehicles
Numerous studies are currently focused on improving the performance and efficiency of electric vehicles (EVs). This research aims to evaluate the necessity for a practical testing methodology to simulate real-world driving scenarios by comparing the driving range measured on a c...

ARTICLE Lightweight YOLOv8 Networks for Driver Profile Face Drowsiness Detection
Vision-based driver monitoring, a non-invasive method designed to identify potentially dangerous operations, has attracted increasing attention in recent years. In this study, a head pitch angle detection method was established to evaluate the driver’s drowsiness. Rather than e...

ARTICLE SOC Estimation of Power Lithium Battery Based on RGC and Multi-innovation UKF Joint Algorithm
A second-order RC equivalent circuit model was established to accurately estimate the state of charge (SOC) of power lithium battery. The model parameters were identified online using the recursive gradient correction (RGC) algorithm, enhancing the real-time performance of param...

ARTICLE Research on Path Tracking Control Based on Optimal Look-Ahead Points
Pure pursuit tracking algorithms are a popular control method in the field of autonomous navigation, where the selection of a look-ahead point plays a crucial role in tracking performance. However, the computation of the look-ahead point involves issues that are challenging to d...

ARTICLE A New Equation for Fuel Economy of Internal Combustion Engine Vehicles in Republic of Korea Based on 5-Cycle Test
The vehicle fuel economy rating system in South Korea has adopted the US 5-cycle fuel economy system since 2012 to provide consumers with comprehensive information. However, due to resource constraints, derived 5-cycle equations have been utilized to approximate 5-cycle test res...

ARTICLE Narrowband Active Noise Control with DDPG Based on Reinforcement Learning
This study investigates the use of deep reinforcement learning for active noise control (DRL-ANC) to cancel narrowband noise. The filtered-x least mean square algorithm for ANC, which includes the secondary path model in itself, has been widely used in various applications. If t...

ARTICLE Research on Non-isothermal Jet Air Supply Method for Human Thermal Comfort Regulation in Commercial Vehicle Based on Localized Air Conditioning System
Uneven heating of the human body in the cabin is one of the main reasons for poor thermal comfort. In this study, five small thermoelectric cooling devices were used to build the automobile localized air conditioning system to improve body temperature uniformity by the method of...

ARTICLE A Study on Lateral Stability Control of Distributed Drive Electric Vehicle Based on Fuzzy Adaptive Sliding Mode Control
This paper presents a joint sliding mode control algorithm with fuzzy adaptive gain to address the problem that the lateral stability of distributed drive electric vehicles is affected by system parameter perturbation and external environment disturbances under steering conditio...

ARTICLE Multi-scale Small Target Detection for Indoor Mobile Rescue Vehicles Based on Improved YOLOv5
To solve the problems that the YOLOv5 object detection network has low detection accuracy, false detection, and missed detection of small objects for trapped people and medical rescue supplies when there is interference in the light background during indoor rescue, this paper pr...

ARTICLE Research on Variable Displacement Valve Control Strategy Based on Electro-hydraulic Drive Intake and Exhaust Valve Opening and Closing Mode
Based on the self-developed hydraulic variable valve mechanism of four-cylinder engine, this paper proposes a variable displacement valve control strategy based on the VOC-CDA mode of electro-hydraulic. The variation rules of in-cylinder pressure, oxygen mass fraction in exhaust...

ARTICLE A Comprehensive Driving Decision-Making Methodology Based on Deep Reinforcement Learning for Automated Commercial Vehicles
Effective driving decision-making significantly enhances the safety of automated commercial vehicles. Different from small passenger vehicles mainly focusing on anti-collision, the inducements of collision and rollover for commercial vehicles are coupled with each other. However...

ARTICLE Stabilizing Electric Vehicle Systems Using Proximal Policy-Based Self-structuring Control
An active disturbance rejection control (ADRC) has been developed for stabilizing electric vehicle (EV) systems without the need for model identification. The proximal policy optimization (PPO) algorithm, along with actor and critic neural networks, has been used to fine-tune th...

ARTICLE Localization and Mapping Based on Multi-feature and Multi-sensor Fusion
Simultaneous Localization and Mapping (SLAM) is the foundation for high-precision localization, environmental awareness, and autonomous decision-making of autonomous vehicles. It has developed rapidly, but there are still challenges such as sensor errors, data fusion, and real-t...

ARTICLE Experimental Study on the Combustion and Emission Characteristics of Methanol/Gasoline Fuels in Direct Injection Miller Cycle Gasoline Engines
This study explores the thermal efficiency of high compression ratio Miller cycle engines and the impact of methanol and methanol/gasoline blends on combustion and emissions. Comparative experiments were conducted to investigate the thermal efficiencies of the Miller cycle compa...

ARTICLE 3D Printed Metamaterials for Energy Absorption in Motorsport Applications
In this study, various 3D printed metamaterials are investigated for application in energy absorbing structures in motorsports. Impact attenuating structures are used to decelerate vehicles and protect drivers in the event of a crash. Additive manufacturing enables complex plast...

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Current Issue: Volume 25(6); Dec 2024

Engine and Emissions

SIMULATION STUDY ON THERMAL MANAGEMENT STRATEGY TO ACHIEVE 99 % SCR EFFICIENCY OF A HEAVY-DUTY DIESEL ENGINE OVER A TRANSIENT CYCLE ( 25064 times )

Tae Joong Wang, Jung Ho Kim

Int J Automot Technol. 2018;19(4):597-603. DOI: https://doi.org/10.1007/s12239-018-0056-6

Cited By 7

Fuel Cell, Hybrid and Electrical Vehicle

HYDRAULIC CONTROL SYSTEM DESIGN FOR A PHEV CONSIDERING MOTOR THERMAL MANAGEMENT ( 19075 times )

Jingyu Choi, Kyunggook Bae, Junbeom Wi, Sunghyun Ahn, Hyunsoo Kim

Int J Automot Technol. 2018;19(1):147-157. DOI: https://doi.org/10.1007/s12239-018-0014-3

Cited By 5

Automobile Chassis & Vehicle Dynamic

TRANSIENT DYNAMIC CHARACTERISTICS OF A NON-PNEUMATIC MECHANICAL ELASTIC WHEEL ROLLING OVER A DITCH ( 15530 times )

You-Qun Zhao, Yao-Ji Deng, Fen Lin, Ming-Min Zhu, Zhen Xiao

Int J Automot Technol. 2018;19(3):499-508. DOI: https://doi.org/10.1007/s12239-018-0048-6

Cited By 24

Automobile Body and Safety

DESIGN OPTIMIZATION OF THE COWL CROSS BAR - LIGHT COWL CROSS BAR SATISFYING 5 PERFORMANCES - ( 15515 times )

Byung Seok Kong, Dong Kyou Park

Int J Automot Technol. 2018;19(3):387-391. DOI: https://doi.org/10.1007/s12239-018-0037-9

Cited By 14

Automobile Chassis & Vehicle Dynamic

DEVELOPMENT OF THE LANE KEEPING CONTROL SYSTEM USING STATE-VARYING SURFACE FOR VULNERABLE ROAD USERS ( 15343 times )

Taewan Kang, Dooyong Kim, Minwoo Soh, Hyeongjun Jang, Hwan Seong Jo, Kihong Park

Int J Automot Technol. 2018;19(3):489-498. DOI: https://doi.org/10.1007/s12239-018-0047-7

Cited By 2

Engine, Emission Technology

EXPERIMENTAL INVESTIGATION OF IMPACTS OF INJECTION TIMING AND PRESSURE ON COMBUSTION AND PARTICULATE MATTER EMISSION IN A SPRAY-GUIDED GDI ENGINE ( 15280 times )

Miaomiao Zhang, Wei Hong, Fangxi Xie, Yan Su, Liwei Han, Bin Wu

Int J Automot Technol. 2018;19(3):393-404. DOI: https://doi.org/10.1007/s12239-018-0038-8

Cited By 11

Automobile Chassis & Vehicle Dynamic

WET SINGLE CLUTCH ENGAGEMENT BEHAVIORS IN THE DUAL-CLUTCH TRANSMISSION SYSTEM ( 15242 times )

Jaecheol Cho, Yongseok Lee, Woojung Kim, Siyoul Jang

Int J Automot Technol. 2018;19(3):463-472. DOI: https://doi.org/10.1007/s12239-018-0045-9

Cited By 22

Automobile Chassis & Vehicle Dynamic

SLOPE SHIFT STRATEGY FOR AUTOMATIC TRANSMISSION VEHICLES BASED ON THE ROAD GRADIENT ( 15233 times )

Fanjing Meng, Hui Jin

Int J Automot Technol. 2018;19(3):509-521. DOI: https://doi.org/10.1007/s12239-018-0049-5

Cited By 17

Engine, Emission Technology

ITERATIVE LEARNING CONTROL ALGORITHM FOR FEEDFORWARD CONTROLLER OF EGR AND VGT SYSTEMS IN A CRDI DIESEL ENGINE ( 15103 times )

Kyunghan Min, Myoungho Sunwoo, Manbae Han

Int J Automot Technol. 2018;19(3):433-442. DOI: https://doi.org/10.1007/s12239-018-0042-z

Cited By 2

Automobile Body and Safety

DEVELOPMENT OF HEADFORM IMPACTOR FINITE ELEMENT MODEL CONSIDERING THE HYPERELASTIC AND VISCOELASTIC RESPONSES OF RUBBER ( 14999 times )

Choong-Ryung Lee, Hyun-Yong Jeong

Int J Automot Technol. 2018;19(3):523-534. DOI: https://doi.org/10.1007/s12239-018-0050-z

Cited By 6