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유동특성을 고려한 CNG 충전 노즐의 최적 설계에 관한 연구
곽기명,백진욱,김남용,조용민,류성기,Gwak, Gi-Myung,Baek, Jin-Uk,Kim, Nam-Yong,Cho, Yong-Min,Lyu, Sung-Ki 한국기계가공학회 2022 한국기계가공학회지 Vol.21 No.6
This study considered the internal flow considering the internal shape of the CNG filling nozzle, which is widely distributed in Korea. The CNG filling nozzle is the last part to pass through in the CNG filling process and has a significant influence on the filling efficiency. The mechanism was identified by disassembling the CNG filling nozzle and performing a flow analysis according to the mechanism. Consequently, the energy loss owing to eddy currents in the flow was determined, and modeling was proposed to reduce the energy loss by simplifying the shape and parts.
곽기명(Gi-Myung Gwak),백진욱(Jin-Uk Baek),김남용(Nam-Yong Kim),이윤승(Yun-Seung Lee),류성기(Sung-Ki Lyu) 한국기계가공학회 2024 한국기계가공학회지 Vol.23 No.3
Gears are widely used in dynamic force transmission devices, where 90-Nm universal gearboxes are unique components that transmit power to equipment in a variety of industries. To increase the durability of gearbox systems, we conducted microgeometry analysis to increase the gear strength. A gear design with improved bending strength was presented through numerical analysis using the gear analysis program Romax. The bending strength of the gears was adjusted through dislocation processing, which can improve the bending strength of interacting gear pairs, thus making the gearbox more durable and the machine more efficient.