• Transactions of the Korean Society of Automotive Engineers
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• v.12 no.1
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• pp.162-167
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• 2004

In this research the Co-simulation technique for an electric power steering system with MATLAB/SIMULINK and a full vehicle model with ADAMS has been developed. The dynamic responses of vehicle chassis and steering system are evaluated. Then, a full vehicle model interacted with EPS control is concurrently simulated with an impulsive steering wheel torque input to analyze the stability of 'free control' or hands free motion for Sports Utility Vehicle. This integrated method allows engineers to reduce the prototype testing cost and to shorten the developing period.

• Transactions of the Korean Society of Automotive Engineers
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• v.15 no.5
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• pp.72-77
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• 2007

Since 2000, sports utility vehicles(SUVs) occupy about 40% of domestic vehicle sales. As sports utility vehicle sales are increased the probability of crash accident between SUVs and passenger vehicles increases. Generally, SUVs are heavier than passenger vehicles and their drive height and front end stillness are higher than passenger vehicles. Because of these characteristics SUVs cause more severe injury and fatal injury in SUV to passenger vehicle head-on impact. To evaluate SUV's aggessivity to passenger vehicle, we carried out SUV to passenger vehicle head-on crash test. And finally the way how to reduce incompatibility between SUVs and passenger vehicles is suggested.

• International Journal of Automotive Technology
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• v.7 no.6
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• pp.703-714
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• 2006

The growing concern surrounding rollover incidences and consequences of Sports Utility Vehicles(SUV) have prompted to investigate the sensitivity of critical vehicle parameters on rollover. In this paper, dynamic rollover simulation of Sports Utility Vehicles is carried out using a validated nonlinear vehicle model in Matlab/Simulink. A standard model is considered and critical vehicle parameters like CG height, track width and wheel base are varied within chosen specified limits to study its influence on roll behavior during a Fishhook steering maneuver. A roll stability criterion based on Two Wheel Lift Off(TWLO) phenomenon is adopted for rollover propensity prediction. Further dynamic rollover characteristics of the vehicle are correlated with Static Stability Factor(SSF), Roll Stability Factor(RSF) and Two Wheel Lift Off Velocity(TWLV). These findings will be of immense help to SUV chassis designers to determine safety limits of critical vehicle parameters and minimize rollover incidences.

• Transactions of the Korean Society of Automotive Engineers
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• v.10 no.5
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• pp.129-137
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• 2002

Elastomers, which are used engine mounts and body mount rubbers, are traditionally designed for NVH use in vehicles, and for vibration isolation in specific frequency range. According to the measurement of the characteristics of the SUV's engine mounts, there are variability in same engine mount properties. Static and dynamic stiffness of the SUV's engine mounts are changed due to the driving miles accumulated. The pre-load of body mount rubbers are changed due to the empty vehicle weight, passenger's weight and gross vehicle weight. And the dynamic stiffness of body mount rubbers are changed very hard above 150Hz frequency range.

• Archives of design research
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• v.17 no.3
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• pp.449-460
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• 2004

Various types of the sports utility vehicles become more popular in these days. This phenomenon says the increasing demand of performance oriented vehicles for the various life style It is changing now the rather the simple needs of passenger cars of the past. This popularity is due to not only for the increased leisure time which resulted from the five day working labor policy, but also the development of automotive technology. In addition to a large variety of vehicle and enhanced performance is another reason either. There have been many kind of multi-functional vehicles from the early days of the automotive history, and most of them have been evolved from the $\ulcorner$Jeep$\lrcorner$ which were developed by American makers. And various type of orthodox and crossover vehicles that is combined to many functional aspects for a transportation has been revealed so far. Usually the ambi-tendency has been revealed, in which the crossover vehicle has been become compact, on the other hand the orthodox type of 4-wheel drive vehicles has been become larger for being heavy duty vehicles. And this would be expand widely to more vehicles and brands in the future.

• Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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• 2001.11b
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• pp.671-675
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• 2001

Elastomers, which are engine mounts and body mounting rubbers, are traditionally designed for NVH use in vehicles, and they are designed to isolate specific unwanted frequencies. According to the measurement of the characteristics of engine mounts and body mounting rubbers, dynamic stiffness changes with respect to the driving miles accumulated in engine mounts and initial load in body mounting. This study looks at the variability in same engine mount properties, and the desired dynamic stiffness may increased with driving miles accumulated. And the dynamic stiffness of body mounting rubber changes very stiff above 150Hz.

• Proceedings of the Korea Society of Design Studies Conference
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• 2004.10a
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• pp.234-235
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• 2004

현재 자동차의 변화를 이끄는 흐름에서 가장 핵심이 되고 있는 유형 Sport Utility Vehicle은 전천후 기동성 측면과 Sports성을 중심적인 특성으로 다루고 있다. 그러나 SUV로서 off road 중심의 공간 활용 보다는 실내 공간 중심의 활용이 더욱 중요한 특성으로 자리잡고 있다. 이러한 경향은 주 5일 근무 정착에 따른 여가 시간의 증가와 아울러 보다 다양한 직업과 생활 패턴 등에 따라 더욱 두드러질 것으로 보인다. 이러한 근 미래 변화에 대응하는 방법으로 기존의 SUV type에서 탈피하여 sports성을 반영하는 동시에 보다 utility적 활용 중심의 특성을 가지는 XUV (eXtreme Utility Vehicle)라는 새로운 유형을 2010년 시점의 근 미래 테크놀러지와 조형성의 동향 예측, 사용자 요구점 분석 포지셔닝 등을 통해 제안한다.

• Journal of the Korean Society of Clothing and Textiles
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• v.46 no.6
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• pp.1128-1141
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• 2022

Due to increased interest in safety in sports, leisure, industries, and daily life; the demand for products that protect the head is increasing. As a preparatory study for the development of head protection for head injury prevention, this study analyzed patents and utility models related to head protection products such as industrial safety helmets, vehicle helmets, and sports protection gear. For this study, 368 patents and utility models for head protection products searched through WipsOn were selected and analyzed by application year, function, application, protection area, main material, and subject. From the analytic results of this study, the quantitative and qualitative flow and characteristics of developing technology related to head protection products were identified. Through the trend of current technology, it provided data to seek the development direction in the future. The significance of this study is to secure objective data to establish a road map for creating new Intellectual Property for head protection products.

• Journal of Power System Engineering
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• v.7 no.3
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• pp.61-68
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• 2003

Steering characteristics is an important factor in the evaluation of vehicle quality. To estimate steering characteristics in the vehicle conceptual design stage, vehicle dynamics simulation methods are very efficient. However, it is often difficult to simulate vehicle dynamics for the specific driving scenarios in open-loop driving environment. An efficient driver-in-the-loop vehicle model will be efficient for this job. A good tire model is also very important for the accurate vehicle dynamics simulation. In this research, a driver model is used to simulate vehicle steering dynamics for a 8-dof vehicle model with STI(Systems Technology, Inc.) tire model. For the demonstration of this model, a SUV(sports utility vehicle) and a sedan were simulated.

• Journal of Auto-vehicle Safety Association
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• v.6 no.2
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• pp.12-17
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• 2014

The number of vehicle accidents related to the side impact has increased since 1990 in Korea, thus the side impact test has been performed as one of the major vehicle evaluations of the Korean New Car Assessment Program(KNCAP) in 2003. A total of 77 vehicles of eight different types(compact, small, semi-midsize, midsize, and large sedans and small, midsize, and large sports utility vehicles) were tested in side impact and side pole impact conditions. In this study, the head and thorax injury values(HICs and chest deflections) of the side impact tests performed between 2003 and 2013 were investigated in terms of vehicle type, test year, and test condition. The recent vehicles showed better safety performances(lower injury values) and similar injury patterns were obtained between side impact and pole side impact tests.