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천연가스용 고압 인젝터의 Plunger valve 크기 변경에 따른 질량 유량 균일도에 관한 연구
윤태준(Taejun Yoon),김권세(Kwonse Kim),최문석(Munseok Choe),이홍윤(Hongyoon Lee),강도경(Dogyeong Kang),최두석(Dooseuk Choi) 한국자동차공학회 2017 한국자동차공학회 지부 학술대회 논문집 Vol.2017 No.6
Natural gas is in spotlight as an alternative energy source to deal with global exhaustion of resource and environmental pollution. There are many studies related to natural gas. Among them, technology of the fuel rail that maintains internal pressure 8 bar and above is under development. But, the internal flow of the injector becomes unstable because high pressure gas is getting into inlet of injector. Therefore, this study provided the design variables of the plunger valve to reduce the uneven flow rate of internal fluids. As a result, the size of the plunger valve decreases, a uniformity of the internal flow rate is reduced and the pulsation is also reduced however, internal resistance increases, bore size of plunger valve shall be appropriately sized.
강동하(Dongha Kang),윤태준(Taejun Yoon),박장우(Jangwoo Park) 대한기계학회 2019 대한기계학회 춘추학술대회 Vol.2019 No.11
4WS/6WS is known to be effective in improving stability and handling performance by reducing side slip angle. In this study, 6WD/6WS dynamic model for simulating various motions of full vehicle is developed. Based on the model, dynamic performance are analyzed for vehicles with 2WS, 4WS and 6WS, respectively. It is analyzed for step steering, constant radius cornering and minimum radius turning. The purpose of this study is to compare the characteristics of the 6WS model and to serve as a reference for a development.
남윤수(Yoonsu Nam),박종식(Jongsik Park),윤태준(Taejun Yoon),유능수(Neungsoo Yoo) 대한기계학회 2008 대한기계학회 춘추학술대회 Vol.2008 No.5
Design of control strategy and structure gives a direct impact on wind turbine's performance and life cycle. A variable rotor speed and variable pitch control strategy is introduced, and a mathematic model of wind turbine dynamics is derived. By using a numeric optimization algorithm, the steady state operating conditions of wind turbines are identified. Because aerodynamic interaction of winds with rotor blades is basically nonlinear, a linearization procedure is applied to analyze wind turbine dynamic variations for whole operating conditions.