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ARTICLE
ACOUSTIC CHARACTERISTICS OF THE ABNORMAL COMBUSTION IN A HIGH-COMPRESSION RATIO, SPARK-IGNITION ENGINE
Engine knocking is often identified by an operator based on the combustion sound emanating from the cylinder block during engine calibration in a test cell. Such human-hearing-based acoustic knock determination is considered the most reliable real-time knock-monitoring method,...
ARTICLE
SPEED CONTROL OF REMOTELY OPERATED MULTI-WHEEL MOTOR-DRIVEN VEHICLES FOR UNPAVED ROADS AND OBSTACLES
This paper describes the speed control of a remotely operated multi-wheel motor-driven electric vehicle that can be effectively utilized not only on paved roads but also on unpaved roads or obstacles. The proposed speed control algorithm consists of an upper-level control modu...
ARTICLE
EFFECTS OF COOPERATIVE VEHICLE INFRASTRUCTURE SYSTEM ON DRIVER’S VISUAL AND DRIVING PERFORMANCE BASED ON COGNITION PROCESS
This study explores the influence of cooperative vehicle infrastructure system (CVIS) on the driver’s visual and driving performance. Taking the work zone as an example, a driving simulation experiment involving 37 drivers has been conducted to collect driver’s eye movement...
ARTICLE
DEVELOPMENT AND ANALYSIS OF BUS WITH COMPOSITE-MATERIAL-REINFORCED FRAMES
The bus frame structures suffer serious deformation or fracture and then damage the survival space of passengers. The superstructure of a bus is a frame member that supports the vehicle’s load and incorporates other parts for strength enhancement and impact absorption. Theref...
ARTICLE
PATH PLANNING AND PATH TRACKING FOR AUTONOMOUS VEHICLE BASED ON MPC WITH ADAPTIVE DUAL-HORIZON-PARAMETERS
According to the position relationship between the vehicle and the obstacle, a new obstacle avoidance path planner was designed to solve the limitation of traditional local obstacle avoidance path planner in excessive obstacle avoidance. In order to improve the control accurac...
ARTICLE
ANALYSIS OF AERODYNAMIC CHARACTERISTICS OF REAR WING MOUNTED ON FASTBACK TYPE VEHICLE
The performance parameters of automobiles are mainly determined by aerodynamic characteristics such as lift and drag. To maximize vehicle performance, besides optimizing the vehicle itself, various aerodynamic devices can be used. To determine the efficiency of these devices, ...
ARTICLE
DESIGN OF FILTER LENGTH OF ORDER FILTER AND ITS APPLICATION TO FILTERED-X ALGORITHM FOR ACTIVE NOISE CANCELLATION OF INTERIOR NOISE INSIDE AN EXCAVATOR CABIN
This paper presents a novel method to determine the filter length. Major interior noises inside an excavator cabin are hydraulic pump noise. The filtered x-LMS (FxLMS) algorithm using a notch filter has been widely applied to ANC of engine noise inside the cabin of a passenger...
ARTICLE
DESIGN AND BRAKING STABILITY ANALYSIS OF A NOVEL INTERNAL PUMP-HYDRAULIC RETARDER AXLE FOR HEAVY ARTICULATED VEHICLE
The retarder is widely used to ensure braking safety in heavy vehicles due to its noncontact braking characteristics. Currently, retarders are generally mounted on tractors, but semi-trailers have greater inertia and are prone to accidents. Therefore, the semi-trailer’s brak...
ARTICLE
NOVEL TEST SCENARIO GENERATION TECHNOLOGY FOR PERFORMANCE EVALUATION OF AUTOMATED VEHICLE
As one of the critical technologies for performance evaluation of automated vehicles, the test scenario generation has been widespread concerned. In this paper, we propose a novel test scenario generation technology based on optimized Latin Hypercube Sampling (OLHS) and Test M...
ARTICLE
ADAPTIVE STEERING ANGLE CONTROLLER FOR AUTONOMOUS VEHICLES IN THE PRESENCE OF PARAMETER UNCERTAINTY AND DISTURBANCES
This paper addresses the problem of controlling the electric power steering angle for autonomous vehicles in the presence of model parameter uncertainty and disturbances. Usually, the electric power steering manufacturer provides it as a black box to the automotive companies a...
ARTICLE
ACCELERATED LIFE TESTING OF A MILD HYBRID POWERTRAIN USING ARRHENIUS EQUATION
Electrification of city buses, which play a major role in public transportation, is imperative for efficient use of limited resources and reducing adverse effects of fossil fuels on the environment. One of the vital processes in electrification projects in the automotive indus...
ARTICLE
DYNAMIC ANALYSIS OF A WHEEL RUNNING ON SANDY ROAD ACCORDING TO SLIP RATIO AND ITS VALIDATION
The discrete element method is widely used to analyze the dynamic behavior of a wheel driving on the sandy road. The tetra clustering model for generating arbitrary shape of a particle is developed. A contact method between a wheel and numerous particles is developed to carry ...
ARTICLE
CARBON EMISSION VARIATIONS FOR PLUG-IN HYBRID ELECTRIC VEHICLES AFTER CORONAVIRUS DISEASE 19: AN EMPIRICAL CASE IN CHONGQING, CHINA
Owing to the lockdowns associated with the Coronavirus Disease 2019(COVID-19) pandemic, carbon emissions were significantly reduced. However, the accurate impacts on the personal transport sector since then remain unclear. To further investigate the influence of sudden public...
ARTICLE
PHYSICOMECHANICAL CHARACTERISTICS OF CARBON FIBER REINFORCED POLYMER COMPOSITE USING X-RAY DIFFRACTION, ATOMIC FORCE AND ELECTRON MICROSCOPIES
The physicomechanical characteristics of PAN-based carbon fibers were investigated by SEM-EDS, XRD, TEM and AFM analysis while the mechanical properties of the composites were studied by tensile, flexural and Charpy impact tests with ASTM standards. Regarding the tensile test ...
ARTICLE
PERFORMANCE IMPROVEMENT OF INDEPENDENT HIGH PRESSURE PUMP FOR DME ENGINE
In this study, in order to improve the performance of the plunger type high pressure pump using DME as fuel, the flow verification was confirmed according to the change of the pump rotation speed and the design parameter change of the high pressure pump through experiments and...
ARTICLE
NONLINEAR MODEL PREDICTIVE CONTROL FOR PATH TRACKING IN HIGH-SPEED CORNER ENTRY SITUATIONS
Path tracking control is one of the essential controls for lateral positioning controls such as collision avoidance and lane keeping and changing. In severe situations in which the tire force reaches its limit, such as entering a corner at high speed or in a low-friction situa...
ARTICLE
AUTOMATIC SCENARIO GENERATION FOR DECISION ALGORITHM PERFORMANCE EVALUATION OF AUTONOMOUS VEHICLE VIA SCENARIO PARAMETER SWEEPING METHOD
Autonomous driving algorithms are always in operation during normal driving and require responses to many more driving situations than ADAS, which assists the driver only in specific risk scenarios. However, due to the absence of a quantitative algorithm evaluation method, mos...
ARTICLE
ADAPTIVE ENERGY MANAGEMENT STRATEGY OF FUEL CELL ELECTRIC VEHICLE
The energy management strategy (EMS) can efficiently split the power among different sources for a fuel cell electric vehicle (FCEV). This paper puts forward how to cooperate with a proton exchange membrane fuel cell as the primary energy source, and a ultracapacitor as the a...
ARTICLE
EFFECT OF METHANOL ADDITION ON COMBUSTION AND EMISSIONS CHARACTERISTICS ON A TURBOCHARGED GDI ENGINE
To enrich the knowledge and understanding of the application effect of methanol fuel in the current engine, the influence of methanol-gasoline blended fuel containing 10 %, 20 % and 30 % methanol addition (M10, M20 and M30) on the engine performance, combustion and emissions ...
ARTICLE
DRAG REDUCTION PREDICTION OF AHMED MODEL WITH TRAVELING WAVE BASED ON BP NEURAL NETWORK
n this paper, a traveling wave model is proposed to explore its influence on the aerodynamic drag of a Ahmed model, the experimental and numerical results of aerodynamic drag coefficient CD for the Ahmed model are in good agreement. Then by defining the aerodynamic benefit coe...
ARTICLE
FINITE ELEMENT MODELING FOR THE CAP PLY AND ROLLING RESISTANCE OF TIRES
A new simulation methodology was proposed for predicting the temperature distribution and the rolling resistance of a passenger car tire with consideration of the thermo-mechanical characteristics of the cap ply. By combining the tensile test data and the shrinkage test data o...
ARTICLE
EFFECTS ON SPOKE STRUCTURE OF NON-PNEUMATIC TIRES BY FINITE ELEMENT ANALYSIS
Cause of the non-pneumatic tires (NPTs) which are recent manufacturing have a higher weight that increases energy consumption for driving vehicles with them. This paper then focused on their proper spoke structure. Six patterns of spoke aligning on the NPT circumference were p...
ARTICLE
RIDE PERFORMANCE ON WHEEL ROTATION SPEED DRIVEN CONTROLLED DAMPER SYSTEM
The trend in vehicle electrification has been increasing. However, the mass of the electric vehicle increases with the battery size. Consequently, the ride and handling performance may be insufficient to meet user expectations. This study aims to provide the value of the dyna...
ARTICLE
OMNIDIRECTIONAL AUTONOMOUS ROBOTIC PLATFORM FOR ADVANCED DRIVER ASSISTANCE SYSTEMS TESTING –MOVEMENT, LOCALIZATION AND NAVIGATION POSSIBILITIES
This paper deals with the movement, localization and navigation possibilities of Autonomous Robotic Platform (ARP). Such a platform is used for ADAS (Advanced Driver Assistance Systems) testing in automotive. At the beginning, the paper discusses different solutions that are a...
ARTICLE
CRASHWORTHINESS EVALUATION OF A HYDROGEN BUS FUEL SYSTEM
For the successful introduction of buses fueled by hydrogen, the safety of hydrogen buses is being discussed and investigated by governments and research institutes. This study is focused on evaluation approaches for hydrogen bus crashworthiness with hydrogen fuel systems loca...
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