Indian Journal of Science and Technology
Year: 2015, Volume: 8, Issue: Supplementary 1, Pages: 1-6
Kwon-Se Kim1 and Doo-Seuk Choi 2*
1 Department of Mechanical Engineering, Graduate School, Kongju National University 1223-24, Cheonandaero, Seobuk-Gu, Cheonan, Chungnam, Korea; [email protected]
2 Division of Automotive & Mechanical Engineering, College of Engineering, Kongju National University 1223-24, Cheonandaero, Seobuk-Gu, Cheonan, Chungnam, Korea; [email protected]
In the present study, torsion springs with different spring tensions were designed and produced, and a study was conducted concerning what effects vibration occurring in an exhaust variable valve has on engine performance and back pressure. Therefore, it will be affirmed by designing and producing torsion springs with different spring tensions in the present study what effects vibration produced in the exhaust variable valve has on engine performance and back pressure. According to the results of conducting back pressure experiments with respect to mass flux supply for 4 types of K1, K2, K3 and K4 having different torsion spring constants of an exhaust variable valve, a conclusion was obtained showing a parabolic trend in the order of K1 < K2 < K3 < K4 and it could be seen from burst of speed section and certain section of K1, K2, K3 and K4 that vibration due to opening and closing of the valve occurred in the exhaust variable valve with different torsion spring constants in the order of K1 (0.6 (g)) < K2 (0.8 (g)) < K3 (1.3 (g)) < K4 (1.8 (g)). Therefore, when a pulsation phenomenon occurring in a combustion chamber of automobile engines is minimized, it is considered that more improved performance can be obtained from stabilized engine combustion.
Keywords: Automobile Muffler, Back Pressure, Exhaust Variable Valve, Exhaust Conducting Copy Device, Vibration
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