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연료분무 및 연소 3 : 고순도 수소함량에 따른 HCNG 연소특성 및 배출가스 영향 평가
임윤성 ( Yun Sung Lim ),이종태 ( Jong Tae Lee ),박장민 ( Jang Min Park ),김선문 ( Sun Moon Kim ),김형준 ( Hyung Jun Kim ),고종민 ( Jong Min Ko ),이성욱 ( Seong Wook Lee ) 한국액체미립화학회 2012 한국액체미립화학회 학술강연회 논문집 Vol.2012 No.-
This investigation decribes the effect of the combustion and emission characteristics of HCNG engine according to the high purity hydrogen contents. The HCNG fuel was made by the mixture with a high purity hydrogen (H2) and a natural gas. The test vehicle was applied to the bi-fuel (Gasoline and CNG) system and this system was modified from the fuel supply and fuel tank. In addition, the three premixed HCNG fuels with mixed rate of 10, 20 and 30% of hydrogen were used to maintain the safety. In order to analyze the combustion characteristics of HCNG and CNG, the fuel was injected in the combustor with constant volume. The exhaust emission from light duty vehicle with bi-fuel system was analyzed by a chassis dynamometer and emission analyzer. From these results, the reduction rate of NOx emission increased in the HCNG fuel and emission amount of THC and CO shows a similar level with CNG fuel. This study can be utilized the basic data for the development of a new business plans related with HCNG engines
임윤성 ( Yun Sung Lim ),문선희 ( Sun Hee Mun ),정택호 ( Taek Ho Chung ),이종태 ( Jong Tae Lee ),동종인 ( Jong In Dong ) 한국액체미립화학회 2020 한국액체미립화학회지 Vol.25 No.1
Automotive manufacturers are applying technologies for greenhouse gas reduction such as vehicle weight reduction, engine downsizing, direct injection technology, variable valves and transmission performance improvement to achieve the targets for enhanced greenhouse gas and fuel consumption efficiency. In this paper, compared and analyzed greenhouse emissions according to engine capacity, engine displacement, curb weight and sales volume of hybrid and internal combustion engine passenger vehicles. Hybrid emit 32~39% less greenhouse gas than internal combustion engines through the combined mode test method. Hybrid electric vehicle’s curb weight was about 7% heavier on average for the same engine displacement, while greenhouse gas was about 36% lower. It was confirmed that in order to reduce the emission of pollutants of greenhouse gases as well as the air pollutants, it is necessary to expand the supply of eco-friendly vehicles.
연료분무 및 연소 2 : 휘발유, LPG 자동차 배출가스 유해물질 기여도 연구
임윤성 ( Yun Sung Lim ),이종태 ( Jong Tae Lee ),김정수 ( Jeong Soo Kim ) 한국액체미립화학회 2013 한국액체미립화학회 학술강연회 논문집 Vol.2013 No.-
International Agent for Research Cancer(IARC) rose diesel exhaust carcinogen level to one level from class 2 in June 2012. The reason caused PAHs(poly aromatic hydrocarbons) in the diesel exhaust emission particulate matters. GDI has been selling officially since 2009. GDI(gasoline direct injector) is direct injection of gasoline into cylinder. so GDI is different injection type to MPI(multi port injector). GDI can downsize the engine. so power as well as improved fuel economy is improved. but GDI has disadvantages , produced particle matters by unburned fuel. GDI is required to evaluate and control to exhaust emission. This study evaluated CO, THC, NOx, PM and HAPs from GDI and LPI exhaust emissions. Vehicle emissions were tested by chassis dynamometer with CVS tunnel. The test mode was FTP-75 and High way Fuel Efficiency Test mode.
권택균,임윤성,Kwon, Tack-Kyun,Lim, Yun-Sung 대한후두음성언어의학회 2008 대한후두음성언어의학회지 Vol.19 No.2
Several parameters are used for the assessment of phonatory function and voice quality in clinical settings. Glottic airflow, subglottal pressure, mean phonation time, laryngeal resistance and voice efficiency are the most commonly used aerodynamic parameters. Aerodynamic analysis is developed to evaluate phonatory energy source and to estimate laryngeal efficiency. Also these measurements have shown the good correlation with perceptions of breathiness and findings of glottic competence. Aerodynamic study is important to understand relationships between pulmonary and phonatory function.
고순도 수소함량에 따른 HCNG 연소특성 및 배출가스 영향 평가
이종태 ( Jong Tae Lee ),임윤성 ( Yun Sung Lim ),김형준 ( Hyung Jun Kim ),이성욱 ( Seong Wook Lee ),이장훈 ( Jang Hoon Lee ),김종규 ( Jong Geu Kim ) 한국분무공학회 2012 한국액체미립화학회지 Vol.17 No.3
This investigation decribes the effect of the combustion and emission characteristics of HCNG engine according to the high purity hydrogen contents, The HCNG fuel was made by the mixture with a high purity hydrogen (H2) and a natural gas. The test vehicle was applied to the bi-fuel (Gasoline and CNG) system and this system was modified from the fuel supply and fuel tank. In addition, the three premixed HCNG fuels with mixed rate of 10, 20 and 30% of hydrogen were used to maintain the safety. In order to analyze the combustion characteristics of HCNG and CNG, the fuel was injected in the combustor with constant volume. The exhaust emission from light duty vehicle with bi-fuel system was analyzed by a chassis dynamometer and emission analyzer. From these results, the reduction rate of NOx emission increased in the HCNG fuel and emission amount of THC and CO shows a similar level with CNG fuel. This study can be utilized the basic data for the development of a new business plans related with HCNG engines.
우측 반회후두신경을 침범한 갑상선 유두상암 환자의 수술 후 발생한 양측 성대 마비의 회복 1예
문미진,왕수건,이윤세,임윤성,이진춘,강양호,손석만,김인주,Mun, Mi Jin,Wang, Soo Geun,Lee, Yoon Se,Lim, Yun-Sung,Lee, Jin Chun,Kang, Yang Ho,Son, Seok Man,Kim, In Joo 대한기관식도과학회 2011 大韓氣管食道科學會誌 Vol.17 No.1
Vocal cord paralysis (VCP) is a common complication after thyroidectomy despite the continuity of the recurrent laryngeal nerve (RLN) is preserved. Much efforts have been made into preventing VCP, but few of them focuses on the treatment strategies and prognosis after VCP take place. In this case, patient visited the clinic for papillary thyroid cancer in Rt. thyroid gland without VCP. She underwent total thyroidectomy with central neck dissection. During dissection, Rt main mass was encircling Rt. RLN. To make matters worse, Lt. RLN was severed due to tight attachment with Berry's ligament. After that, intratumoural dissection of Rt. RLN and end to end anastomosis of Lt. RLN were performed with microscopy to preserve the functions of RLNs as much as possible, otherwise permanent bilateral VCPs were inevitable. We report this case, since both vocal cords recovered from VCPs with symmetric, synchronous movements at postoperative follow up.