• Journal of the korean Society of Automotive Engineers
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• v.25 no.5
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• pp.15-23
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• 2003

• Journal of the korean Society of Automotive Engineers
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• v.25 no.5
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• pp.34-36
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• 2003

• Proceedings of the Turfgrass Society of Korea Conference
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• 2004.12a
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• pp.17-37
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• 2004

• Journal of the korean Society of Automotive Engineers
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• v.25 no.6
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• pp.7-12
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• 2003

• Journal of the korean Society of Automotive Engineers
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• v.9 no.6
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• pp.1-7
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• 1987

스터링 엔진은 1816년 로버트 스터링에 의해 발명된 밀폐형 외연기관이다. 초기에는 왕복형 증기기관과 더불어 구미제국에 널리 보급되었으나, 실용화 기술의 부족으로 인한 잦은 고장과 가솔린 및 디젤엔진의 발명으로 인해 자취를 감추었다. 그 후 1938년 네덜란드의 필립스사(Philips Co.)에 의해 연구가 재개되고, 간헐적으로 진행되다가 최근에 연료의 다양화, 에너지절약, 환경보존 등에로의 강한 요구와 재료기술 및 생산기술의 진보로 인하여 이 엔진이 다시 주목되어 구미, 일본 등에서 연구 개발되고 있다. 미국에서는 1978년부터 정부적 차원에서 개발을 시작하여 일부는 상용화되어 있고, 일본에서는 1982년 이래로 계속 개발을 수행하고 있고, 그 외에도 유럽의 여러 나라들에서도 활발한 연구가 진행되고 있다.

• Proceedings of the KAIS Fall Conference
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• 2009.05a
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• pp.543-545
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• 2009

유럽을 포함한 많은 선진국들은 자동차 배기가스에 대한 환경규제를 만족하기 위해서 노력을 하고 있다. 가솔린 엔진에 비해서 문제가 되는 디젤엔진에서 배출되는 배기가스 즉 질소 산화물과 입자상 물질을 저감하려는 노력은 꾸준히 진행되고 있다. 본 논문은 11,000cc 대형 터보 디젤엔진에 배기가스 순환장치를 설치하여 질소산화물을 효과적으로 저감하는 기술을 개발하고자한다.

• Journal of the korean Society of Automotive Engineers
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• v.13 no.5
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• pp.26-34
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• 1991

내연기관 가솔린엔진에서 점화전은 매우 중요하다. 그것은 2만볼트의 스파크를 흘려 혼합기를 연소시키기 때문이다. 본 고는 통상의 스파크화염보다 수십배 더 큰 화염의 생성을 이루는 몇가지 방법과 그것이 엔진에 미치는 영향들을 분석 제시하여 어느 한 요소가 향상한다고 할 때 혹 타 부문에 여타 영향을 주는지의 여부도 함께 고찰하여 실제로 사용할 수 있는 기술로서의 검토를 함이다.

• Transactions of the Korean Society of Mechanical Engineers B
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• v.35 no.10
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• pp.981-987
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• 2011

In this study, single cylinder engine experiment was carried out to investigate combustion characteristics spray guided direct injection spark ignition engine. In the result of engine experiment, it was shown that flammable window of injection timing was existed. The combustion efficiency increased with retarding injection timing, reaching a peak value, subsequent to decrease again. These results were likely due to the effect of ambient pressure on stratified-premixed mixture preparation. 150 bar injection pressure condition and retarded injection timing from the best combustion efficiency injection timing showed the highest IMEP value due to the advanced combustion phase of the maximum combustion efficiency condition. HC emission showed same trend of combustion efficiency, and smoke emission was increased as injection timing was retarded due to the increased locally rich area in the high ambient pressure. NOx emission showed decreasing trend as injection timing was retarded. This is likely due to the maximum in-cylinder temperature was decreased with retarded combustion phase.

• Transactions of the Korean Society of Automotive Engineers
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• v.13 no.3
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• pp.96-101
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• 2005

Cogeneration is an energy conversion process, where electricity and useful heat are produced simultaneously in one process. Also, carbon dioxide emissions can be reduced as well. The cogeneration process may be based on the use of steam, gas turbines or combustion engines. However, there have been few models with an output of less than 100 kilowatt. In the present study, a spark ignited gas engine with generation output of 10 kilowatts was developed for micro cogeneration package. The gas engine shows 29.2$\%$ of thermal efficiency under Stoichiometric combustion and 33.6$\%$ of thermal efficiency under lean combustion. NOx emission shows less than 10ppm at 13$\%$ oxygen under stoichiometric combustion and about 100ppm at 13$\%$ oxygen under lean combustion.

• Journal of ILASS-Korea
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• v.20 no.3
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• pp.187-194
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• 2015

In this study, three visualization methods, Schlieren, Shadowgraph, and Mie-scattering, were applied to compare diesel and gasoline spray structures. Fuels were injected into a high pressure/high temperature constant volume chamber under the same ambient pressure and temperature condition of low load in gasoline direct injection compression ignition (GDCI) engine. Two injection pressures (40 and 80 MPa), two ambient pressures (4.2 and 1.7 MPa), and two ambient temperatures (908 and 677 K) were use. The images from the different methods were overlapped to show liquid and vapor phases more clearly. It was found that the gasoline fuel is more appropriate to form a lean mixture.