http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
CNG차량의 연료공급라인용 Check Valve Seal의 거동해석
유재찬(Jae-Chan Yoo),여경모(Kyeong-Mo Yeo),박태조(Tae-Jo Park),강병루(Byeong-Roo Kang) 한국트라이볼로지학회 2006 한국트라이볼로지학회지 (Tribol. Lubr.) Vol.22 No.6
In CNG (Compressed natural gas) fuel supply line, whose main components are receptacle and check valve are used to charge high pressure gas to the tank of NGV (Natural gas vehicle). It is reported that the seal is separated occasionally form valve seat and results in blockage of gas flow. In this paper, MARC is used to investigate the reasons of seal separation and suggest design improvements. The static gas pressure distributions acting on the seal which calculated using FLUENT are considered to investigate accurate seal deformation behaviors. Deformed seal shapes are obtained for various amounts of seal interference and its location, gas pressure distributions and Young's modulus of the rubber used. The results showed that the reasons of seal separation problems are verified theoretically, and suggested examples of new design method. Therefore the present numerical methods can be applied in designing and performance analysis of rubber seals adopted in high pressure fluid machineries.
수소자동차의 연료주입라인용 Check Valve 내의 유동해석
박경택(Park, Kyong-Taek),여경모(Yeo, Kyeong-Mo),박태조(Park, Tae-Jo),강병루(Kang, Byeong-Roo) 한국신재생에너지학회 2007 한국신재생에너지학회 학술대회논문집 Vol.2007 No.06
The high pressure hydrogen gas refueling system is required for fuel cell vehicle. In this paper, a commercial computational fluid dynamics (CFD) code, FLUENT is adopted to investigate the gas flow characteristics inside the check valve for various refueling and tank pressures. The results showed that the choking phenomena can occur for certain refueling pressures, therefore refueling processes should be divided by multiple stages. And a design method to prevent the seal departure problem which reported in CNG usages is required.
CNG 차량의 2단 Regulator용 Diaphragm의 변형해석
김관준(Kwan-Joon Kim),조현동(Hyeon-Dong Jo),박태조(Tae-Jo Park),송명길(Myoung-Gil Song),강병루(Byeong-Roo Kang) 한국트라이볼로지학회 2009 한국트라이볼로지학회 학술대회 Vol.2009 No.6
This paper presents the deformation characteristic of a rubber diaphragm for CNG(Compressed Natural Gas) 2-stage regulator used in NGVs(Natural Gas Vehicles). In NGV, very sensitive gas regulator is required to control and supply the high pressure natural gas to engine for various operating conditions. The regulating valve which is fixed to the diaphragm seat controls the pressure and fuel flow. In case that internal pressure of regulator is changed, the diaphragm parts move up and down to give required pressure. In this paper, a nonlinear structure analysis commercial program, MARC, is adopted to study the deformation behaviors of the rubber diaphragm for various operating pressures and diaphragm thicknesses. The results showed that von-Mises stress and strain distributions.