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ARTICLE
PERFORMANCE ESTIMATION OF NEW VEHICLE THERMAL MANAGEMENT SYSTEM FOR AN UNMANNED MILITARY GROUND VEHICLE USING INTEGRATED SIMULATION MODEL
The Hybrid Electric Vehicles (HEVs) have additional powertrain components compared with conventional vehicles. Thus, to design a Vehicle Thermal Management System (VTMS) architecture and control strategy for a new HEV powertrain, it is necessary to analyze the energy balance i...
ARTICLE
FINITE ELEMENT MODEL OF A HIGH-STATURE MALE PEDESTRIAN FOR SIMULATING CAR-TO-PEDESTRIAN COLLISIONS
Among road traffic deaths, pedestrian accounted for 22 % of all fatalities in the world, 26 % in Europe, and 22 % in the U.S. To investigate the injury risk of the high-stature population, a Finite Element (FE) model corresponding to a male 95th percentile (M95) pedestrian was...
ARTICLE
MODELLING THE INTRUSIVE FEELINGS OF ADVANCED DRIVER ASSISTANCE SYSTEMS BASED ON VEHICLE ACTIVITY LOG DATA: CASE STUDY FOR THE LANE KEEPING ASSISTANCE SYSTEM
Although the automotive industry has been among the sectors that best-understands the importance of drivers’ affect, the focus of design and research in the automotive field has long emphasized the visceral aspects of exterior and interior design. With the adoption of Advance...
ARTICLE
NUMERICAL INVESTIGATION ON OIL PAN DESIGN PARAMETERS TO IMPROVE ENGINE PERFORMANCE DURING OIL COOL DOWN AND WARM UP PERIODS
For developing automotive industry, one of the focusing point is reduction of engine friction level to decrease both engine emissions and fuel consumption. Important part of researchers have focused on cold engine start period, which has higher friction loses. Shorter warm up ...
ARTICLE
DUAL-MOTOR FULL-WEIGHT ELECTRIC POWER STEERING SYSTEM FOR COMMERCIAL VEHICLE
In order to study the electric power steering system (EPS) which is suitable for the steering characteristics of commercial vehicles, the effect of weight on steering performance is analyzed, and a dual-motor full-weight EPS system is proposed. Firstly, the full-weight assist ...
ARTICLE
PREDICTION OF CONDUCTED EMISSION IN A PMSM-DRIVE BRAKING SYSTEM USING A CIRCUIT MODEL COMBINED WITH EM SIMULATION
In this paper, a model for a prediction of conducted emission from vehicular PMSM-drive braking system is presented. The proposed model is based on the high-frequency circuit model combined with EM simulation. The parameter for high-frequency circuit modeling is derived from t...
ARTICLE
DEVELOPMENT OF A FLOW NETWORK SIMULATION PROGRAM PART III – COMPRESSIBLE FLOW ANALYSIS
An in-house simulation program is developed that can conveniently be utilized to predict characteristics of compressible flow in flow network systems comprising multiple flow components. The program consists of two parts, the flow analysis for computing velocity, pressure, and...
ARTICLE
PATH GENERATION ALGORITHM BASED ON CRASH POINT PREDICTION FOR LANE CHANGING OF AUTONOMOUS VEHICLES
To reduce the calculation time needed to determine the optimal path, the form of the road and the path of an autonomous vehicle were linearized; additionally, among multiple obstacles, only those that were potentially dangerous were chosen. By considering the movement of movin...
ARTICLE
DYNAMIC MODELING OF BRAKE IN POWER-SPLIT DHT AND PRESSURE TRACKING CONTROL WITH SLIDING MODE VARIABLE STRUCTURE METHOD
Since the mode transition performance of power-split DHT (Dedicated Hybrid Transmission) are directly influenced by torque dynamic characteristic of the brake, the brake pressure should be controlled accurately. In this paper, a dynamic model of brake and its pressure regulati...
ARTICLE
FUEL ECONOMY IMPROVEMENT ANALYSIS OF HYBRID ELECTRIC VEHICLE
Owing to stricter environmental regulations and greenhouse gas reduction targets, hybrid electric vehicles (HEVs) have marked a remarkable increase in market share to replace internal combustion engine vehicles (ICEVs). Among HEVs, powersplit HEVs have attracted increasingly h...
ARTICLE
COMBUSTION SYSTEM DESIGN OF A GENSET DIESEL ENGINE BY USING DFSS METHODOLOGY
In this study, an optimum design for the combustion system of a genset diesel engine was conducted by using Design for Six Sigma (DFSS) methodology. As a result of this study, the best combination of design parameters to minimize the fuel consumption of the genset diesel engin...
ARTICLE
RESEARCH ON THE CRASHWORTHINESS OF REGULAR CENTURION 2M BARRIER BASED ON THE ARBITRARY LAGRANGE-EULER METHOD
In this study, the crash-worthiness of a regular Centurion 2M barrier, which is a type of portable water-filled barrier (PWFB), is evaluated under different collision conditions. A numerical model of the regular Centurion 2M barrier, consisting of a plastic shell and water, wa...
ARTICLE
THEORETICAL ANALYSIS ON BENDING COLLAPSE OF REINFORCED THIN-WALLED HAT-SHAPED SECTION BEAMS
The Reinforced Thin-walled Hat-shaped Section (RTHS) beams is widely used in automobile body. The bending collapse characteristic of the RTHS beams plays an important role in the crashworthiness. The paper focuses on the theoretical analysis on the bending collapse characteris...
ARTICLE
COMBUSTION CHARACTERISTICS OF HYDROTREATED VEGETABLE OIL-DIESEL BLENDS UNDER EGR AND LOW TEMPERATURE COMBUSTION CONDITIONS
This paper investigates the effects of Hydrotreated vegetable oil (HVO)-diesel blends on combustion characteristics under various ambient oxygen concentrations and ambient temperatures in a constant volume combustion chamber (CVCC). Combustion characteristics were presented in...
ARTICLE
EFFECTS OF AN EXHAUST HEAT RECOVERY SYSTEM ON PERFORMANCE CHARACTERISTICS OF A FORKLIFT TRUCK
Construction equipment has consumed a lot of energy with a high workload compared to commercial vehicles of the same class. So, fuel efficiency is one of the important indicators of merchantability of the construction equipment. Especially, because forklift has been generally ...
ARTICLE
ACTIVE FRONT STEERING FOR DRIVER’S STEERING COMFORT AND VEHICLE DRIVING STABILITY
In this paper, an active front steering (AFS) controller with a new variable steering ratio (VSR) map is proposed to enhance the vehicle stability and consider the driver’s steering comfort. The properties of the steering sensitivity and the yaw rate gain are investigated and...
ARTICLE
DEVELOPMENT OF DRIVER FUEL ECONOMY INDEX FOR REAL ROAD FUEL ECONOMY
Although a 5-cycle testing was adopted to address the gap between the reported fuel economy from certification tests and fuel economy during real-world driving, the gap still remains and is difficult to be resolved without the consideration of the fuel consumption influencing ...
ARTICLE
GASEOUS EMISSIONS AND PARTICLE MICROSTRUCTURE CHARACTERISTICS OF PODE/DIESEL BLEND FUEL
Polyoxymethylene dimethyl ethers (PODE) has good application prospects as an alternative to diesel fuel with a great potential to achieve clean combustion on diesel engines. In current study, the effects of PODE/diesel blends with PODE volume fraction at 10 %, 20 % and 30 % on...
ARTICLE
ENGINE NET TORQUE COMPENSATION THROUGH DRIVELINE TORQUE ESTIMATION IN A PARALLEL HYBRID VEHICLE
In recent years, interest in smart and green vehicles has increased. There are many cases where engine net torque related control is performed when building smart and green car systems. Speed tracking control in autonomous driving, or optimal transmission shift control is an e...
ARTICLE
NUMERICAL MODELING FOR N-HEPTANE SPRAY COMBUSTION PROCESSES WITH VARIOUS AMBIENT OXYGEN CONCENTRATIONS
This work has numerically analyzed the structure of spray flames with various ambient oxygen concentrations. To realistically predict the spray evaporation characteristics in the high-pressure diesel-like environment, the present study has employed the high-pressure effective ...
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