• The tire
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• s.84
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• pp.32-34
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• 1979

미국, 일본, 유럽 등의 자동차 메이커가 연비효율이 뛰어난 소형차 부문에서 본격적으로 대결하려는 시대가 가까와 오고 있다. 미 GM사의 소형차 전략의 첨병이라고 할 수 있는 X카가 금년 초에 이미 미국에서 발매되어 좋은 반응을 보이고 있다. 미국차는 대형, 일본ㆍ유럽차는 소형이란 말은 이제 옛말이 되어 가고 있다. 이와 같은 사실은 세계 자동차산업구조에 큰 변혁이 일어나고 있다는 것을 뜻한다. 자동차산업을 10대전략산업의 하나로 육성하고 있는 우리 나라 산업계에서도 미국의 새로운 전략과 일ㆍ유럽의 대응, 그리고 새로운 국제분업 관계의 전개에 기민하게 대응할 자세를 확립해야 할 것이다. 다음은 이와 같은 현황하에서 최근 세계 자동차업계의 움직임을 간추려 본 것이다. <편집자주>

• Proceedings of the Korea Information Processing Society Conference
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• 2011.11a
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• pp.1463-1465
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• 2011

최근 경기침체 속에서 소형차의 판매가 강세를 보이고 있고 연비의 효율성에 대한 관심이 높아지고 있다. 본 논문에서는 이러한 흐름을 반영하여 미니카의 연비를 관리하여 효율적인 운행이 가능하도록 하기 위한 목적으로 콘텐츠를 제작하였으며, 제안된 콘텐츠의 기획과 구현을 중심으로 하고 있다. 미니카 앱(Minicar Application)은 사람들에게 자동차 연비를 효과적으로 관리하고 각종 정보를 공유할 수 있도록 기획되었으며, 기획 및 구현의 범위를 소형차로 한정하여 특정 차에 대한 관리 전문성을 두었고, 자신의 연비를 관리하는 것뿐 만 아니라 미니카를 운행하는 다른 사용자와 정량적인 비교가 가능하도록 하였다. 본 연구를 통하여 소형차를 소유한 사람들에게 차에 대한 애착심을 주고, 운전습관을 개선해주는 효과를 줄 수 있을 것으로 기대된다.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.14 no.6
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• pp.3013-3022
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• 2013

Satisfying the large car impact condition of the high level SB5-B for "SMART Highway" longitudinal barriers, the possibility of increase of the small car impact velocity from 120km/h to 130km/h was investigated. Through computer simulation using input parameters calibrated to full-scale crash test results, various longitudinal semi-rigid barrier models were improved such that for the small car impact speed of 120km/h the change of longitudinal and transverse velocities of the impact vehicle can satisfy the THIV limit. The barrier model determined through this process satisfied the performance assessment criteria for SB5-B impact conditions. Varying the wing angle of slip block-outs of the passed barrier model, the possibility of increase of the small car impact velocity was investigated by FEA and a full-scale crash test was conducted. It has been shown that the possibility to increase the small car impact speed to 130km/h is high if the test facility condition for 130km/h impact velocity is better equipped.

• The tire
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• s.92
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• pp.34-41
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• 1981

후발국지역의 자동차업계 역시 소형차경쟁이 격화되어 이제까지 중ㆍ대형차로 세계 주요 자동차 후발국에 생산, 판매망을 구축해 왔던 미국이나 유럽의 기존 메이커들은 현지에서도 수세에 몰리고 있다. 그러나 일찌기 소형차에 눈뜬 일본이나 Ford, VW같은 메이커는 계속 지반을 확대하고 있다. 이에 따라 각 후발국에서는 이제까지 난립 상태에 있던 자동차업계를 과감히 정리통합하는 등 재편성하여 격화되는 국제 경쟁에 대응하려는 모습을 볼 수 있다. 한편 이제까지 자동차수입을 금지함으로써 맹목적인 자국산업 보호정책을 실시해 왔던 남미제국들이 요즘에 와서 일제히 수입 금지를 해제함으로써 이들 시장이 새로운 소형차수출시장으로 부각한 것은 특기할 만한 일이다. 일본차는 이 지역에 무서운 속도로 파고 들어가고 있는 중이다.<편집자주>

• Journal of Korean Tunnelling and Underground Space Association
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• v.20 no.6
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• pp.917-930
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• 2018

A quantitative risk assessment method for quantitatively evaluating the fire risk in designing a road tunnel disaster prevention facilities has been introduced to evaluate the appropriateness of a disaster prevention facility in a large tunnel through which all vehicle types pass. However, since the quantitative risk assessment method of the developed can be applied only to the large sectional area tunnels (large tunnels), it is necessary to develop a quantitative risk assessment method for road tunnels passing only small cars which has recently been constructed or planned. In this study, fire accidents scenarios and quantitative risk assesment method for small road tunnels through small cars only which is based on the methods for existing road tunnels (large tunnels). And the risk according to the distance between cross passage is evaluated. As a result, in order to satisfy the societal risk assessment criteria, the distance of the appropriate distance between cross passages was estimated to be 200 m, and the effect of the ventilation system of the large port exhaust ventilation system was quantitatively analyzed by comparing the longitudinal ventilation system.

• International Journal of Highway Engineering
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• v.9 no.3
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• pp.39-50
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• 2007

Barrier VII program is normally used for the design of flexible barrier, but if modelled properly it can be used for the analysis of vehicle impact to small sign posts. In this paper sign post is shown to be modelled as flexible barrier by combining beam and column elements at each beam node. Simulations with the Barrier VII program have been made for 7 impact cases composed of sign posts of circular and H section with rigidly connected support and breakaway support system. The impact speed used for the simulation ranged from 30km/h to 110km/h. The study shows that in the vehicle impacts to a circular sign post with high speed, the large deflection and high inertia force causes the sign plate to hit the windshield leading to a hazard to the occupants. It is also shown that impact to H section post results in small deflection of the post and abrupt velocity change and high deceleration of the impact vehicle causing severe damage to both the vehicle and occupants. Simulation study also shows that breakaway support system eliminates the potential danger of the vehicle impact to the rigidly connected small sign posts by reducing deflection of the post, abrupt change in velocity and deceleration level.

• International Journal of Highway Engineering
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• v.13 no.3
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• pp.131-137
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• 2011

The development of underground space essentially leads to increase in construction cost and installation of a large structure also acts as a factor deteriorating fine sight of the city. Accordingly, there recently is a trend to make city center structures light and small if possible. In this study, for efficient development of underground space, we analyzed the change in the average delay time in comparison to the existing underpass and the influence thereof using a microscopic simulation software VISSIM 5.20 after controlling heavy vehicles not to use the underpass and to detour using the intersection above the underpass, and gradually increasing the ratio of heavy vehicles in accordance with v/c of the access road in order to examine efficiency of introducing an underpass exclusive to small cars at an underground road installed and being operated in a city road area, and presented installation standard for underpass exclusive to small vehicles adequate to the traffic characteristics. Considering the findings of the study, introduction of underpass exclusive to small cars judged to be beneficial in the aspects of reduction in the economic loss resulting from land purchase, environmental damage due to construction of large traffic structures and environment-friendly green traffic.

• Proceedings of the Korea Institute of Fire Science and Engineering Conference
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• 2012.04a
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• pp.294-297
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• 2012

본 연구는 MLZ을 활용하여 도로터널의 다양한 화재시나리오별 화재성상예측을 목적으로 1/20 Scale 모형실험을 통하여 소형차, 버스화재 시 FAN의 작동 비작동, 소형차 2대 직렬 병렬화재, 소형차 2대+버스 혼합 화재실험을 바탕으로 FAN작동시 배기구 방향으로 고온의 열기층이 생성됨을 확인하였다. 축소모형실험과 MLZ 해석결과를 비교하여 화원으로부터의 약 20m 정도의 이격거리부분 온도가 유사하게 나타났고, 시간별 온도분포를 확인한 결과 플래시오버 이전단계에 피난계획을 세우는 단계에서 예측이 가능했다.

• KSCE Journal of Civil and Environmental Engineering Research
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• v.30 no.6D
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• pp.605-613
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• 2010

In this study, Impact factors are represented and barrier height of compact car road of safety barrier is suggested through the investigation of applying problems of existed standard of general car road. For this, traffic accidents analysis is performed and based on the analysis, impact vehicle weight, impact Angle, crash velocity, and barrier height are investigated. For the decision of impact angle, analysis is carried out by comparison of RISER and 2-lines expressway accidents data. Through this, higher-impact angle is suggested. Vehicle weight data of sub-compact car, small vehicle, medium and large vehicle, SUV, small truck is surveyed and analyzed. Based on the accident accumulation rate, regression analysis of vehicle weight impact and impact velocity is performed. Also, based on the cumulative rate of vehicle weight on expressways near Seoul, barrier height of compact car road is calculated. It is noted that the results of this study will be contributed to the decision of barrier type.

• LP가스
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• s.110
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• pp.45-56
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• 2007