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성연관(Sung, Yeon Kwan),송주태(Song, Ju Tae),김명환(Kim, Myung hwan) 한국자동차공학회 2012 한국자동차공학회 부문종합 학술대회 Vol.2012 No.5
LPG(Liquefied Petroleum Gas) is a type of fuel consisting of hydrocarbon gases in liquid form. LPG fuel for vehicle in domestic market consists of propane, butane and so on. Since LPG Taxi became popular for the use of remaining butane in 1970, domestic market of LPG vehicle has been invigorated by reason of permission for LPG RV and IMF economic crisis. The attention about LPG vehicle is on the rise why new car like the type of LPG hybrid car, LPG small car, bi-Fuel (LPG/gasoline) car releases. The feature of overseas LPG fuel for vehicle is propane content of that is more than propane content of domestic LPG fuel and nations such as Japan, Australia, the USA, India, Europe implement various policy like tax relief for LPG vehicle with the purpose of Reducing CO₂ Emission. The purpose of this paper is to 1) the review about LPG fuel property of vehicle, 2) internal and external technical trend of LPG vehicle, 3) technical problem and the development direction of LPG vehicle which is competitive for export.
임미나 ( Mi-na Lim ),김철민 ( Chul-min Kim ),박영민 ( Young-min Park ),송주태 ( Ju-tae Song ),진재권 ( Jae-kwon Jin ),조현웅 ( Hyun-ung Cho ) 한국동물위생학회 2016 한국동물위생학회지 (KOJVS) Vol.39 No.4
The present study was conducted to investigate the lesion of red internal organs in slaughtered pigs and provided assistant data for pig farms. During March to December 2015, a total of 1,160 lung samples out of 58 herds were collected randomly from pigs slaughtered in Jeonbuk province. In addition, 290 hilar lymph nodes from pig with pneumonic lung lesion (5 samples per herd) were screened for selected viral and bacterial pathogens. Gross lesions of lungs such as swine enzootic pneumonia (SEP), pleuritis, pleuropneumonia, pericarditis and liver white spots were examined. The overall prevalence of SEP was 64.3% (746/1,160). In the analysis of seasonal prevalence, there was an increase of occurrence during the spring months (287/400, 71.8%) and decrease during the fall months (93/200, 46.5%) among the whole herds. The mean number of SEP score per pig was 1.20±1.28. The prevalence of pleuropneumonia, pleuritis, pericarditis, and milk spot was 25.5% (296/1,160), 44.1% (512/1,160), 3.8% (44/1,160) and 17.6% (204/1,160), respectively. The most frequent region with lung lesion was diaphragmatic lobes (left 17.1%, right 17.3%). In the detection of viral pathogens by PCR, porcine circovirus type2 (PCV2) was positive in 86.9% (252/290), while porcine reproductive and respiratory syndrome virus (PRRSV) was not detected, In the case of bacterial pathogens, 50 microorganisms were isolated by PCR and/or microbiological test. The most frequently isolated bacteria was Streptococcus suis (20, 34.4%), followed by Pasteurella multocida (17, 29.3%), Streptococcus spp. (11, 3.4%), Actinobacillus pleuropneumoniae (2, 8.9%).
곽민환(Min Hwan, Kwak),강명권(Myung Kweon, Kang),김대용(Dea Yong, Kim),성연관(Yeon Kwan,Sung),송주태(Ju Tae,Song) 한국자동차공학회 2011 한국자동차공학회 지부 학술대회 논문집 Vol.2011 No.10-1
LPI Fuel Pump is equipment which is installed inside of cylinder, pressurize LPG fuel 5bar more than saturated vapor pressure to keep liquid phase of LPG throughout Fuel supply system. Installing fuel pump inside of cylinder is more reliable in aspect of fuel supply performance, but cost is expensive and maintenance is poor and dangerous. This paper shows the procedure of optimum design of new LPI fuel supply system which external fuel pump locates on the fuel feed line to improve maintenance quality and reduce cost of system. The purpose of this paper is to make better fuel supply performance of external LPI fuel pump than that of internal LPI fuel pump using Robust Design Method .