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김세준(Sejun Kim),양경준(Kyung-Joon Yang) 한국자동차공학회 2007 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
There were some researches on variable speed accessory drive system. But, none have been used for mass production cars yet, because of their big dimension and high prices. In this paper we present a compact two-speed variable speed accessory drive system using planetary gear on damper pulley(called TSAD: Two-speed Accessory Drive system). By applying TSAD system on accessory belt system, we can reduce the losses of accessory systems on high rpm operating conditions. As a result we achieved about 1.5% fuel economy improvements.
타이밍 벨트 마모 개선을 위한 벨트 트래킹 저감 및 풀리 플랜지 형상에 관한 연구
권희도(Kwon, Hee Do),장경익(Jang, Kyoung Ik),홍순재(Hong, Soon Jae),서인재(Seo, In Jae),양경준(Yang, Kyung Joon) 한국자동차공학회 2019 한국자동차공학회 부문종합 학술대회 Vol.2019 No.5
Pulley Flanges are designed to keep belt within the pulley. When it comes to design pulley flanges, it needs to be considered tracking force – lateral force of the belt as it attempts to move in one direction or another on the pulley. The Tracking force is related to timing belt drive system layout, components of belt drive system and belt constructions. There are various problems caused by the belt tracking force in all engines that use the timing belt system. In the initial development of the new U-engine, there was also a belt side wear problem due to belt tracking force. This paper reports the characteristics of tracking behavior and flange design on a New U 1.6 diesel engine. It shows that how to optimizing the belt tracking and the flange design to reduce timing belt side wear.