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FEM 프로그램 ABAQUS 를 이용한 자동차 엔진 밸브의 동적 해석
조석호(Seokho Cho),이기수(Kisu Lee),김영권(YoungKweon Kim),김방원(Bangwon kim),주용선(Yongsun Ju) 한국자동차공학회 2002 한국자동차공학회 Symposium Vol.2002 No.11
This paper presents dynamic analysis of high-speed drivern valve in an automotive engine. The velve and velve spring are modeled by finite element techniques. The mass of the spring and the dynamic contact between the coils are considered. Also the dynamic contacts between the velve and the velve seat are computed by the finite element techniques without assuming the artificial springs. And the finite element code ABAQUS is used for this analysis.
조석호(Seokho Cho),고상철(Sangcheol Ko),이대엽(Daeyup Lee) 한국자동차공학회 2019 한국자동차공학회 학술대회 및 전시회 Vol.2019 No.11
Due to global warming, various CO₂ reduction policies are being implemented, especially in countries that emit a lot of greenhouse gases. In particular, in order to reduce CO₂ generated from heavy duty vehicles in the transportation sector, not only Korea, but also the United States, Europe, Japan, and China have introduced GHG and fuel economy regulations to gradually increase emission regulation standards. In addition, the U.S. and Japan began to regulate greenhouse gas and fuel economy for trucks and buses, and Europe has been monitoring CO₂ emissions since 2019. Korea is also preparing to introduce regulations. Due to the large variety of vehicles and the heavy weight of the vehicle including the load, it is difficult to test the chassis dynamometer and the engine dynamometer test does not reflect the state of the vehicle. Accordingly, in Europe, the United States, and Japan, CO₂ is calculated by computer simulation. Therefore, in this study, the accuracy of the simulation was investigated by comparing and analyzing the CO₂ results calculated using the European (VECTO) and domestic (HES) heavy duty vehicle greenhouse gas simulation tools with the real road results.