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권영웅,오선,이우민,이종원 중앙대학교 생산공학연구소 2000 생산공학연구소 논문집 Vol.9 No.1
이륜차 CVT(Continuously Variable transmission)의 가동플랜지는 그 내부에 롤러가 들어가 있어 이 롤러의 구동으로 벨트가 가동풀리의 형상을 따라 움직이게 된다. 롤러의 움직이는 궤적은 바로 가동플랜지 내부의 프로파일형상과 매우 밀접한 관계를 맺고 있다. 본 연구에서 현재 이륜차 CVT에 사용되고 있는 가동플랜지의 특성을 해석하였다. Driving flange used in motorcycle CVT(Continuously Variable Transmission) has a roller inside. The belt moves according to the track of driving pulley by the actuation of this roller. The orbit of this roller is closely related with the inner profile figure of the driving flange. In this study, the characteristics of driving flange used in motorcycle CVT was analyzed.
가솔린기관의 냉시동시 촉매 가열 촉진을 위한 점화시기 영향에 대한 실험적 연구
권영웅,함성훈 한국기계기술학회 2011 한국기계기술학회지 Vol.13 No.4
On cold start operation of an SI engine, a catalyst shows poor performance before it reaches activation temperature. Therefore, fast warmup of the catalyst is very crucial to reduce harmful emissions. In this study, an appropriate control strategy is investigated to increase exhaust gas temperature through changes of spark timing. Combustion stability is also considered at the same time. Exhaust gas temperature and pressure of combustion chamber are measured to investigate the effects of spark timings on cold start and idle performance. Experiments showed that retarded spark timing promotes the combustion at the end of expansion stroke and increases exhaust gas temperature during cold start.
구배반응 무단변속기를 탑재한 소형 전기차량의 주행 성능시험
권영웅,김만재 한국기계기술학회 2015 한국기계기술학회지 Vol.17 No.5
In this study new Continuously Variable Transmission system which is adaptable to a small size electric vehicle is proposed available to gradient response Continuously Variable Transmission. New pulleys consist of springs adapted driving pulley and driven pulley. At the moment a small electric vehicle drive a slope, new system respond to a gradient as overcoming tensional force of springs. We made prototype of gradient response Continuously Variable Transmission to test travelling performance. In the travelling performance test, the small electric vehicle with gradient response Continuously Variable Transmission get improved perfomance than the small electric vehicle with reduction gear.
권영웅,조권일,우영환,이종원 중앙대학교 생산공학연구소 2000 생산공학연구소 논문집 Vol.9 No.1
본 연구에서는 CVT의 구동특성을 각 부품들의 기능에 따라 해석하였으며 크게 두 개의 부분으로 구성되어 있다. 첫째는 0.9에서 2.8의 변속비를 갖는 이륜차에 대하여 변속구간을 세밀히 분석하여 구동, 종동풀리의 축력을 알아보았다. 둘째는 축간거리를 변화시켜 구동, 종동풀리 축력의 변동을 면밀히 살펴 보았다. 분석결과 데이터의 단위는 무차원하여 쉽게 그 비교치를 알아 볼 수 있도록 하였다. In this study, the driving characteristics for the function of each part of CVT are analyzed. This study is consisted of two parts as follows. First, variable speed ratio range of the motorcycle from 0.9 to 2.8 was analyzed and then axial force of driving and driven pulley was investigated. Second, the change of axial force in driving and driven pulley for various driving to driven axis distance was closely observed. It was found that data was easily understood as the nondimensional values.