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이춘태(Choontae Lee) 한국자동차공학회 2008 한국 자동차공학회논문집 Vol.16 No.3
The clutch system is a subcomponent of the transmission that is designed to engage and disengage power flow between the engine and the transmission. Recently, the engine power of automobile has been continuously increased because of customer's demand for the bigger one. As the engine power is increased, the vibration transmitted to the hydraulic clutch operating system has been increased. Therefore the demand for the reduction of clutch pedal vibration during the operation has been increased. This paper describes the pressure pulsation reduction characteristics of the damper cylinder which is applied to the hydraulic clutch operating system. And the purpose of this study is to propose an analysis model and investigate the effect of the design variable variations for the hydraulic clutch system. Especially, we studied the effect of damper cylinder parameter variations on the hydraulic clutch system performance.
차량용 충격흡수기의 비선형 동적거동 모델링 및 감쇠력 특성해석에 대한 연구
이춘태(Choontae Lee),곽동훈(Donghoon Kwak),정봉호(Bongho Jung),이진걸(Jinkul Lee) 한국자동차공학회 2003 한국 자동차공학회논문집 Vol.11 No.1
The performance of shock absorber is directly related to the car behaviour and performance, both for handling and comfort. In this study, a mathematical nonlinear dynamic model and computational method are introduced to study the flow and performance of shock absorber. The f1ow characteristics of components(piston and body valve) are investigated and applied to dynamic modeling of shock absorber to predict the damping force. The simulation results agree with the test data well. The shock absorber model proposed in this paper is applicable as a part of a full vehicle suspension simulation.