• Journal of the Korean Society of Mechanical Technology
• /
• v.13 no.2
• /
• pp.129-135
• /
• 2011

Dry CVT(Continuously variable transmission) consists of a driving pulley and a driven pulley joined by rubber V-belt. Each pulley consists of a fixed flange and a movable flange. The movable flange of the driving pulley has the centrifugal roller and a ramp plate in the flange. The movable flange moves toward a fixed flange under the actuation of a centrifugal roller, as the driving pulley speed increases. The main advantages of the Dry CVT with V-belt, which has been popular in Asia, are a simple mechanism, less maintenance and low cost. The important claim which have an influence on the performance of the Dry CVT is the wear of the centrifugal roller. In this study ball type is proposed instead of roller type of movable flange to resolve claim. Also experiments are carried out for new model to evaluate performances.

• Journal of Power System Engineering
• /
• v.10 no.3
• /
• pp.73-80
• /
• 2006

The main advantages of the Dry CVT with V-belt, which has been popular in Asia, are a simple mechanism, less maintenance and low cost. The important factors which have an influence on the performance of the CVT are the weight of the centrifugal roller, the change of axial distance and spring force. Based on an experiment, the effects of load torque, speed ratio, and revolution of both the driving pulley and the driven pulley during the alteration of the axial distance, roller weight and spring constant were studied.

• Journal of Power System Engineering
• /
• v.17 no.1
• /
• pp.85-90
• /
• 2013

Dry CVT consists of a driving pulley and a driven pulley joined by rubber V-belt. Each pulley consists of a fixed flange and a movable flange. The movable flange moves toward a fixed flange under the actuation of a centrifugal roller, as the driving pulley speed increases. The important claim which have an influence on the performance of the Dry CVT is the wear of the centrifugal roller. In this study ball type is proposed instead of roller type of movable flange to resolve the claim. Simulation is carried out for new model to verificate performance, experiments are carried out for new model to evaluate performances.

• Proceedings of the Korea Air Pollution Research Association Conference
• /
• 2003.11a
• /
• pp.241-242
• /
• 2003

국내의 대규모 석유화학산단지역은 석유정제 및 석유화학 관련 사업장으로서 공정별 저장탱크나 밸브, 플랜지 및 폐수처리장 등에서 다량의 VOCs 물질이 배출되고 있다. 여수산단은 1969년 종합적인 석유화학단지로 조성되기 시작하여 현재 93개 업체가 입주하여 가동 중에 있고, 이중 석유화학 관련 사업장이 51개사로서 VOCs 배출과 관련하여 환경부에 매년 배출량을 보고하고 있다. 도시지역의 VOCs 배출은 주로 자동차나 유기용제 사용 등으로 외국에서는 이에 대한 연구가 진행되어 도시지역 특성에 따른 기여도가 대략 산출되어 관리방안 등이 마련되고 있다. (중략)