Designing a urea heating coil by repeating a urea melting experiment is a very time-consuming and cost-taking task. In this paper, insight on how to design the heating coil of engine coolant type urea tank is provided from numerical analysis. The numerical analysis conditions us...
Due to the wide application of SI engines, there is an urgent need to improve their thermal efficiency. Lean combustion technology is an advanced technology that effectively improves the efficiency of ignition engines. However, the change of the combustion cycle deteriorates wit...
Electric vehicles are a clean energy transportation option recently emerged as an alternative to the conventional engine powered vehicles. These vehicles are using Lithium ion battery as energy storage for their propulsion because of its energy density. Due to the chemical react...
The use of intelligent systems to prevent accidents and safety enhancement in vehicles is becoming a requirement. Besides, the development of autonomous cars is progressing every day. One of the main challenges in transportation is the high mortality rate of vehicles colliding w...
Taking torsion beam suspension as the research object, the kinematics characteristics of the suspension are analyzed, and the expressions of the wheel alignment parameters are established. It also explains why the changes in the suspension’s roll stiffness and the load transfer...
This study focused on the spray development process via spray visualization experiment using different nozzle shape. Specifically, the spray penetration and initial spray angle were determined by high-speed camera and Long distance microscope (LDM) visualization system. Addition...
In this study, a high-load expansion strategy was investigated by varying the effective compression ratio (CR) using the variable valve duration (VVD) method during combustion in a gasoline/diesel dual-fuel premixed compression ignition engine. The effective CR was varied from 1...
The lower extremity is one of the most difficult parts to protect in a car collision. The purpose of this paper is to determine the injury characteristics of the lower extremities under frontal collisions with different overlaps. The test device for human occupant restraint (THO...
The regenerative braking system can recover the braking energy to extend the mileage of electric vehicles, however, recovering more energy and ensuring the braking stability are conflicted each other. In addition, during the downhill process, the road slope angle has a great inf...
This paper presents the design optimization results for the anchor shape of the solenoid part of a flow-rate control valve by executing the design of experiments (DOE) for developing a quieter high-pressure pump. The impact of the noise level increases with an increase to the va...
The low light condition poses a challenge when utilizing direct monocular visual simultaneous localization and mapping (vSLAM) in a parking environment. To make the monocular vSLAM perform well under parking environments with low light or illumination alternations, in this paper...
In this study, the spray collapse in a non-flash boiling condition was studied. Spray collapse can occur in a sidemount gasoline direct injection (GDI) injector because of its narrow hole distance. To investigate the spray collapse, a spray visualization system was constructed w...
The wide speed ratio range and continuously variable ratio characteristics of continuously variable transmission (CVT) can effectively improve the energy economy of electric vehicle (EV). However, the relatively low mechanical efficiency and high hydraulic loss limit its applica...
This paper presents our investigation into creating a sideslip angle control system for an electronic-four-wheel drive (e-4WD) vehicle. In keeping with the growing demand for fun-to-drive vehicles, our e-4WD vehicle, which is equipped with in-wheel motor systems (IWMs) on the fr...
Flexible metal forming processes are novel ways to meet the growing needs for maintaining economic feasibility in mass production and customization. The flexible forming processes inherently have more process parameters to control than conventional processes, and thus they may b...
The rack force transmitted to a rack bar through a tie-rod is regarded as a major external force to the electric power steering (EPS) system. However, since road torque generated between the tire and the road surface is transmitted to the rack bar under the influence of road whe...
The effect of hydrocarbon (HC) concentration on particulate deposition and the microstructure of the deposit in exhaust gas recirculation (EGR) cooler was investigated. The EGR cooler inlet gas temperature was 300 °C and the coolant temperature was 85 °C throughout the test, an...
The tractor and trailer units of the semi-trailer truck are connected through the hitch point. The articulation angle is generated when lateral force is applied to the vehicle and it causes the tractor and trailer units to move in different trajectories. When driving on narrow r...
As the most advanced fuel injection system, the common rail system can achieve the flexible control of injection pressure, injection timing and injection rate. Thus, the pressure control strategy of high-pressure common rail system (HPCRS) will be critical for the performance of...
In this paper, regenerative braking control of electric vehicles is investigated based on multi-source information such as image recognition, GPS and vehicle running parameters. Firstly, the fast normalized cross-correlation (FNCC) algorithm is applied to identify the speed limi...
The purpose of this study was to record and analyze various reaction times and behaviors of drivers in response to cut-in situations in a driving simulator. A total of 105 male and female volunteers between the age of 20 and 49 participated in an experiment in a driving simulato...
Advanced driving assistance systems (ADAS) such as adaptive cruise control (ACC), traffic jam assistance, and collision warning have been developed to enhance driving comfort and reduce the driving burden in car-following situations. Although these systems provide automated driv...
In the currently used steering systems, the front tires are steered dependently during turning maneuvers. During these maneuvers, the weight transfer causes the inner tire to have less vertical force compared to the outer tire. Therefore, it generates less lateral tire force and...
Hydrodynamic lubrication is simulated under the contact conditions that the direction of contact velocity reverses with a sudden high applied load in the contact of piston top ring and cylinder liner. Hydrodynamic lubrication film formation and pressure between piston ring and c...
In this paper, an electric supercharger was installed on a GDI gasoline engine with LP EGR system. The engine performance and emission changes were experimentally investigated with electric supercharger and EGR. The experimental result shows that EGR has effects on energy saving...
