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안병민(B.M.Ahn),최은오(E.O.Choi),홍동표(D.P.Hong),정태진(T.J.Chung) 한국자동차공학회 1997 한국자동차공학회 춘 추계 학술대회 논문집 Vol.1997 No.11_2
Automobile company tries to reduce the inertia of powertrain to increase the fuel efficiency and increase the engine power every year to make the high speed driving possible at f'-Ill load condition. These cause the torsional vibration of powertrain. But the demand about ride comfort improvement increased constantly. so torsional vibration of powertrain became a emergency problem to be cured.<br/> This study is a basic research to reduce the torsional vibration of powertrain at driving condition. First. the heavy duty powertrain is characterized as a vibrating system. Its natural frequencies and mode shapes are reviewed. Second. By comparison of simulation results and experiment results. propriety of developed model is verified. Finally. the counterplan which can reduce the torsional vibration by mode analysis and parameter modification is suggested.
안병민(B.M.Ahn),최하철(H.C.Choi),최은오(E.O.Choi),홍동표(D.P.Hong),정태진(T.J.Chung) 한국자동차공학회 1997 한국자동차공학회 춘 추계 학술대회 논문집 Vol.1997 No.11_2
In recent year. As the demand about low vibration and noise vehicle is increased constantly. Automobile companies try to a lot of thing to achieve this demand. Gear rattle vibration became a emergency problem to be cured at idling.<br/> There are two kinds method to reduce idle gear rattle vibration. One is optimization of clutch damper design para meted stiffness. hysteresis torque. preload). the other is system parameter modification (inertia. drag torque, backlash). But these methods are impossible to estimate influence rate of each gearpair Con the idle gear rattle vibration.<br/> In this study. 14 degrees of freedom nonlinear model is developed to analysis influence rate of each gearpair on the idle gear rattle vibration and the counterplan to design low vibration transmission is suggested.