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이일권(ILkwon Lee),국창호(Changho Kook),박종건(Jonggeon Park),이정호(Jeongho Lee),신태환(Taehwan Shin),유영준(Youngjun You),이윤규(Yunkyu Lee),권영문(Youngmoon Kwon) 한국자동차공학회 2016 한국자동차공학회 부문종합 학술대회 Vol.2016 No.5
This paper is to study and analyze for manufacturing of a vehicle using with 125㏄ engine. The first, we made the manufacture a car using with material of the carbon steel pipe that was 27㎜ in a diameter and 2.9㎜ on thickness. But all frame manufacture of a car as knuckle and power-train system made the same pipe, the acceleration power of a car was very disadvantage driving. Therefore this problem must improve accurately. The second, the sprocket teeth ratio of power-train system adjusted on 4.61:1 that the number of tooth processed with 13 tooth on small gear and 60 tooth on large gear. It verified the fact that the gear ratio did to optimize the driving condition on kunsan contest in 2015. The third, the suspension in chassis system softly controlled the hardness of front side and stiffly adjusted the damping force of rear shock absorbers. It was knew for the driver to advantage driving his a car. The steering system largely could make better use of a space when moving in front of pedal. Also, the brake system was improved to distribute the accurate brake force by two clutch master cylinder.
이일권(ILkwon Lee),국창호(Changho Kook),강호인(Hoin Kang),이영숙(Youngsuk Lee),권영문(Youngmoon Kwon),천창렬(Changlyeol Cheon),안성국(Sungkook An) 한국자동차공학회 2016 한국자동차공학회 부문종합 학술대회 Vol.2016 No.5
The purpose of this paper is to study for the electric car using manufacturing technique. It made the single-seater personal vehicle running on road by applying the electric car system. The first, it seek to minimize the deflection using profile method that was fixed with jig instrument. The second, it improved the electric car power composed the regenerative braking system by applying the generator using in wind-generation. The third, resulting test the controller, it could certify the stability driving and manufacture side of car. The fourth the gear ratio of power-train of sprocket knew that was very good at 4.5:1 by driving test. The fifth, the driver could confirmed the durability and driving stability after installing the steering, suspension, brake and tire and wheel system.
이일권(ILkwon Lee),국창호(Changho Kook),이정호(JeongHo Lee),함성훈(SungHoon Ham),이영숙(YoungSuk Lee),이승용(Seung Yong Lee) 한국자동차공학회 2023 한국자동차공학회 학술대회 및 전시회 Vol.2023 No.11
This paper is to study and analyze the change factor including with combustion engine to electric car. In recent, the fossil fuel that a great part of the energy source existence in the earth was brought on the global warming phenomenon endangering the survial of mankind. It was been at the end of one’s rope that a mankind had to change with the electric car for decreasing a CO2 from the emission gas in the vehicle. But for changing a electric car, the every nations in the world must devicefully resolve the reduced work problem and the derivation problem causing with decline of the petroleum consumption. Resulting do a survey for purchase reason of a electric car, the cost of fuel was investigated in the highest ratio of 56.5% in the survey. This is the most important factor for economical aspect like fuel expense reduction. To increase the electric car, the charge expense will be maintained with low price continuously. In the questionnaire survey analysis for the supply expansion of electric car, a charging station secure was investigated in the highest ratio of 44.7% in the survey. This can forecast to think more important the practical convience than the electric vehicle price and environmentfriendly awareness. The prospect of electric vehicle marcket is predicted that the car makers to live in heavy competition must quickly read the market situation and sales strategy in the world because of discrepancy reduction of technical between the conventional and new car makers.
이일권(ILkwon Lee),국창호(Changho Kook),이정호(JeongHo Lee),함성훈(SungHoon Ham),이영숙(YoungSuk Lee),박종건(JongGeon Park),강호인(Hoin Kang),채수(Soo Chae),안호철(HoCheol An),류경희(KyungHee Ryu) 한국자동차공학회 2019 한국자동차공학회 학술대회 및 전시회 Vol.2019 No.11
This paper is to study the improvement method of driving habit on the vehicle driver. The first example, when the driver drives his car on unpaved road, the running condition badly become than general road that. As it were, the vehicle produce the noise when the fixing rubbers of a car lower body parts change hard because of bad road . The durability of car is debaded by impact of shock absorber repeatly. The second example, the research certified the fact that the driver didn’t wash with water a car periodically when a solinityt is stained with body of car and the car was corroded gradully the painting of car body by salt with body attaching. The betterment method to change the severe driving condition with non-severe driving condition must minimize the idle revolution and go and stop running when the driver operate his car. Therefore, the driver should endeavor to upgrade the effective a car culture for improving and supplying the driving method constantly.
디젤 엔진에서 밸브 스템계의 표면 조도에 따른 오일 누설 특성에 관한 실험적 연구
이일권(Ilkwon Lee),김시영(Siyoung Kim),국창호(Changho Kook),김청균(Chungkyun Kim),김도현(Dohyun Kim),김승철(Seungchul Kim),김한구(Hangoo Kim),문학훈(Hakhoon Moon) 한국자동차공학회 2010 한국자동차공학회 학술대회 및 전시회 Vol.2010 No.11
This paper is for study on the leakage including with surface roughness in the valve stem system of diesel engine. This paper is for study on the oil leakage including with surface roughness in the valve stem system of diesel engine. In the leakage 1, the surface roughness was very dense, but leakage quantity of oil showed growing a trend. In the leakage 1 and 2, when the surface roughness was more scabrous, the control of oil leakage verified that fact is more advantageous. In the leakage 3, the sample verified more favorable for control of oil leakage that the surface roughness of valve stem was not soft. The experimental result of leakage 4 verified that lost a pocket effect that is a role for oil storage existing in the range of surface roughness in leakage 3. As a result, the oil leakage quantity knew increasing a tendency. In the showing from this experimental results, the condition of surface roughness being the most suitable for oil leakage control can conclude with 0.26~0.48㎛.
자동차 도장 시스템의 트라이볼로지적 특성에 관한 불량 사례 연구
이일권(Ilkwon Lee),김청균(Chungkyun Kim),김도현(Dohyun Kim),이병관(Byoungkwan Lee),김한구(Hangoo Kim),조승현(Seunghyun Cho),국창호(Changho Kook),유창배(Changbae Yoo) 한국자동차공학회 2008 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
In recent, the automotive makers have produced the vehicles of many colours that chose by many people. But, if the beautiful painting parts on vehicle appear the variation of paint film by inferiority of paint and chemical effecting, they will be taken the bad influence because of a falling- off in quality. In this paper, the several examples produced in the field identified the fact that give large effect for paint system. The viscosity of coating material affect with paint film formation. When the paint part doesn't make uniform paint film because of lowering viscosity, it made identified inferiority phenomenon by running of paint. The adhesive property of paint surface is affected with roughness. It become so rough that well absorb the coating material. As a result, the researcher certified the phenomenon of orange peel that is collected with certain parts by paint film clod. When the researcher is adhered an alien substance adhesive with paint part during driving in the local where a pollutant contain in air, he identified the inferiority example of paint film because of chemical changing. When the driver keep his car for long time in a garage where is cut the air flowing, he certified the blistering phenomenon of paint film.