http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
[연료 및 윤활유부문] 연료계통 설계요소가 소형 경유 자동차 저온성능에 미치는 영향
신동현(Dong-Hyun Sheen),양대준(Dae-joon Yang),김성환(Sunghwan Kim),김현석(Hyeon-seok Kim) 한국자동차공학회 2000 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
Low temperature operability of the diesel vehicle can not be guaranteed by controlling the low temperature flow characteristics of fuel alone. Proper design of fuel system that matches the fuel properties has to be made to achieve the common purpose. To find the cause of the cold cranking problem recent1y observed mainly with a particular mxIe1light duty diesel vehicles in Korean market, tests have been carried out to determine how the fuel filter design affects the low temperature performance of vehicles in the same category. Representative fuel filter.; have been collected to investigate their char3cteristics in terms of the effective pore size and the filtration area. These characteristics have been assessed against the low temperature test results from both fuel test rig and cold chamber chassis dynamometer operations. The results show that both the effective pore size and the filtration area are critical in determining the low temperature performance of vehicles tested. It has been found that for trouble-free operation of the vehicles at low temperatures down to -20t, it is desirable that the effective pore size is larger than 35 micrometers and the filtration area larger than 3,5OO㎠.
신승엽,김학주,이용복,김병갑,윤진하,김기택,양대준 한국농업기계학회 2003 바이오시스템공학 Vol.28 No.1
This study was carried out to get basic data of troubles in starting and supply of farm diesel engines in cold winter. The results of the study are summarized as follows: 1. As the result of farm survey, the proportions of farms which had starting problems or troubles in fuel supply in cold winter for the last 5 years were 38% for the farms with power-tillers and 32% for the farms with tractors. Most of the farms which had starting problems or troubles in fuel supply in cold winter used light oil for summer, spring or fall rather than for winter. 2. As the result of fuel supply test, fuel supply was stopped at -6˚C and -18˚C for summer light oil and winter light oil, respectively. 3. the lowest temperatures of winter light oil for starting engine were -7.5˚C for power-tiller,-12.5˚C for tractor of 38PS, and -17.5˚C for tractor of 45PS,which were 5~7.5˚C lower than that of summer light oil. 4. The performance of engine starting and the trouble of fuel supply system at lower temperature were significantly improved by using winter hight oil rather than summer light oil.