• Journal of the korean Society of Automotive Engineers
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• v.18 no.2
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• pp.103-109
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• 1996

근래 들어 석유 에너지에 대한 대체 에너지 개발을 위한 노력이 여러 분야에서 활발하게 이루어지고 있다. 이는 석유 자원의 고갈에 대한 대비라기 보다는 전세계적으로 심각해져가고 있는 환경오염이라는 보다 더 심각한 문제에 대한 대처로서 인식되어져 가고 있다. 1992년 6월에 열린 지구환경 정상 회담 결과 자동차 배출가스규제 기준의 국제협약화가 예상되고 있으며 EC등은 이산화탄소 세금이라고 불리우는 환경세 도입의 압박을 가해오고 있다. 당사는 기존의 자동차연료인 가솔린이나 경유에 비해 유해배기 물질을 현저히 줄일 수 있는 대체 에너지를 사용하는 자동차의 개발을 위해 많은 노력을 기울이고 있는데, 본 논문에서는 천연가스자동차와 전기자동차를 중심으로 당사의 개발현황을 소개하겠다.

• Journal of Korean Society of Environmental Engineers
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• v.38 no.5
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• pp.249-254
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• 2016

In this study, we investigated the main characteristics of off-gas generated from melting process and off-gas treatment system operation example to provide some primary data for commercial vitrification facility design. The purpose of vitrification facility operation is to treat hazardous materials in the radioactive wastes and harmful off-gas containing a variety of chemical species generated in the glass melting process. Constructing and operating vitrification facility essentially need to be licensed through safety analysis; it is very important to treat radionuclide and hazardous materials below the legal environment emissions regulation level. We must accurately understand the characteristics of off-gas and apply an appropriate off-gas treatment process accordingly. Thus, to design the appropriate off-gas treatment there must be a wide range of elements taken into account such as characteristics of waste and melter, regulation guidance of off-gas, characteristics of generated off-gas and off-gas treatment system performance assessment.

• Proceedings of KOSOMES biannual meeting
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• 2005.05a
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• pp.111-118
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• 2005

The Protocol adopted in Sep. 1997 included the new Annex VI of MARPOL 73/78, which will enter into force on 19 May 2005. MARPOL Annex VI sets limits on sulphur oxide and nitrogen oxide emissions from ship exhausts and prohibits deliberate emissions of volatile organic compound (VOCs) from oil tanker in port and oil terminal. This study was conducted to find out countermeasures for the new Annex VI of MARPOL 73/78 and draw up a feasible management plan. The emission quantity of NOx and SOX from ships in Ulsan Port was calculated by U.S. EPA and Japan Marine Engineering emission factors of air pollutant from ship exhausts. In addition, volatile organic compound (VOCs) from oil tanker during the loading and discharging period, also calculated.

• Journal of Energy Engineering
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• v.24 no.4
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• pp.24-32
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• 2015

National and international regulations on the exhaust gases of diesel engines are being strengthened, and a study of the combutsion engine and the post-porcessing system are in progress as a variety of ways. There are many techniques for the removal of nitrogen oxide like HC-SCR, LNT, Urea-SCR. And the technical development on the Urea-SCR owing to high conversion efficiency and fuel economy characteristics has being processed. This study investigated the physical/chemical properties of urea according to the change of the urea content, and were analysed the characteristic of exhaust gas. According to the increase of urea content, the contests of biuret aldehyde, phosphate content was increased and the changes of emission quantity of carbon monoxide, hydrocarbons and particulate matter in the exhaust gas was very slight. The emission quantity of NOx was decreased in accordance with increasing the urea content and it was shown to be more than 80 % in the urea solution having more than 30 wt%.

• Proceedings of the Korea Air Pollution Research Association Conference
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• 2000.11a
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• pp.253-254
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• 2000

휘발성 유기화합물(Volatile Organic Compounds; VOCs)은 용제를 사용하는 도장공정, 석유화학공정 등 각종 산업공정과 자동차로부터 배출되어 대기중에 광화학 산화물 형성에 관여하거나 그 자체로 발암성을 나타내는 물질로 인간 건강에 악영향을 미치며, 또한 온실가스의 역할을 하는 것으로 알려졌다. 특히 BTEX는 산업공정에서 많이 사용되는 물질로서 반드시 처리되어야 할 규제대상물질이다. 이러한 VOCs를 처리하는 기존의 방법들로는 열적산화, 촉매산화, 활성탄 흡착법, 흡수법 등 여러 방법들이 있으나, 이러한 처리방법들은 가열이 필요하거나 흡착제 재생의 필요 같은 문제점들이 있고 또한 VOCs가 대용량으로 배출될 경우 많은 어려움이 있다. (중략)

• Journal of Advanced Marine Engineering and Technology
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• v.38 no.3
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• pp.240-245
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• 2014

As the seriousness of the global environment pollution is gaining our attention recently, researches on application of greenhouse gas emission of ship are being carried globally. However domestic study on greenhouse gas emission from ship was not carried out in various fields. In this study, quantitative data which was presented by greenhouse gas emission of training ship HANBADA and greenhouse gas emission was calculated by Tier 1 method based on total fuel consumption and amount of shore power. Actual voyage data for 1year in 2012 was used to analysis the greenhouse gas emission. This study showed how many weight of gases were exhausted per 1 gross tonnage and per 1trainee in the training ship. There is a need of further research to reduce pollutant and to respond to international environment regulation consistently.

• Transactions of the Korean Society of Automotive Engineers
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• v.15 no.6
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• pp.17-22
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• 2007

GTL(Gas-to-Liquids) fuel technology was converted from the natural gas, coal and biomass into the diesel or kerosene by Fisher-Tropsch synthesis. GTL fuel have very good merits on high cetane number, low density, free sulfur, lower aromatics contents and no poly-aromatic hydrocarbons as well as the autoignition characteristics. These physical properties make it valuable as a diesel fuel with lower emissions than the conventional diesel fuel. Furthermore, GTL fuel can be use not to the engine any modification. Therefore, to evaluate emissions of GTL fuel, the tested diesel vehicles were fueled on blends of GTL fuel/ultra low sulfur diesel fuel(ULSD). And then, we found out that GTL fuel reduced regulated emissions(CO, NOx, HC, PM) compare with conventional diesel fuel.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.17 no.9
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• pp.196-205
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• 2016

The exhaust gas discharged by cars not only threatens the health of the human body, but also contributes to global warming, due to the resulting increase in the concentrations of ozone, fine dust and carbon dioxide. Therefore, the government has steadily implemented careful inspection systems for exhaust emissions, in order to efficiently regulate the exhaust gas of cars. Studies on reducing the exhaust emissions of automobiles have been conducted in various fields, including ones designed to reduce the generation of HC, NOx, and $CO_2$ in the exhaust emission of vehicles. However, there have been insufficient studies on the reduction of the exhaust emission for old diesel vehicles. To develop careful inspection systems for the exhaust emissions of old diesel vehicles, studies on the reduction of the exhaust emissions and improvement of power are necessary by cleaning the carbon sediment in both the intake manifold and injector. Therefore, in this study, we analyzed and compared the amounts of gas emitted when simultaneously cleaning or not cleaning the intake manifold and injector of diesel automobiles with mileages over 80,000 km and operating periods over 5 years. The experimental results showed that in the case where the intake manifold and injector were simultaneously cleaned, there was a decline of 75.2% in the gas emission compared to the cases where only the manifold or injector is cleaned. Also, it was found that simultaneously cleansing the intake manifold and injector enabled the exhaust standard to be satisfied for less than 30% within 8.5 sec.

• Journal of Energy Engineering
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• v.24 no.4
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• pp.42-47
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• 2015

While the oxygen content of gasoline for automobiles in Korea is regulated to less than 2.3 weight %, European and World-Wide Fuel Charter (WWFC) regulate it to less than 2.7 weight %. The oxygen content of oxygen-containing materials increases the octane number of the fuel due to the secondary combustion in the internal combustion engine. It has been reported to be effective in reducing emissions, such as CO, HC, which is caused by incomplete combustion. Before 2000s in the United States and Europe, there has been many researches about vehicle application of the changes in oxygen content of gasoline. However, there are not many domestic researches which reflect the improvement of the fuel quality and automotive technology. In this study, fuels of three different oxygen contents were applied to GDI and MPI engines. As a result, the changes of fuel consumption and emission gas were very similar depends of the oxygen content changes. The PN in GDI engine was decreased as the oxygen content was increased.

• Electronics and Telecommunications Trends
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• v.28 no.3
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• pp.151-159
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• 2013

수소연료전지차(fuel cell electric vehicle)는 가솔린 내연기관 대신 수소와 공기 중의 산소 결합으로 전기를 자체 생산하는 연료전지를 동력원으로 하는 자동차이다. 엔진이 없기 때문에 배기가스 및 오염물질을 배출하지 않아 세계적으로 점점 강화되고 있는 환경규제에 대응하기 위한 친환경 자동차로 부각되고 있다. 미국, 유럽, 일본 등 주요 선진국들은 수소연료전지차 보급을 앞당기기 위해 기술 개발을 지원하고 있고 수소연료전지차 실증 사업 및 프로젝트를 추진하고 있으며, 수소충전소 인프라 확충 및 관련 제도의 정비에 박차를 가하고 있다.