자동차 수동 클러치 유압 실린더의 마찰 특성

다국어 초록 (Multilingual Abstract)

A clutch hydraulic system for automotive manual transmissions transfers hydraulic pressure generated by driver's pedal manipulation to the clutch mechanism. The foot effort when the clutch pedal is pushed is different than that when the clutch is returned. The effort or load difference, called hysteresis, is caused by the friction produced between rubber seal and inner wall inside the hydraulic cylinder. This clutch pedal travel foot effort hysteresis is essential for a clutch hydraulic system design and analysis. The dynamic model for a clutch hydraulic system is developed and a simulation analysis is performed to estimate the fiction coefficient as a function of the cylinder pressure. The simulation result is then compared to the measurements obtained from a clutch hydraulic system tester to ensure the reliability of the dynamic model and the coefficients estimated. Also the estimated friction coefficients at various pressure values are compared to those reported by an independent study.

목차 (Table of Contents)

• Abstract
• 1. 서론
• 2. 클러치 유압 시스템 왕복동 특성 시험
• 3. 마찰을 포함한 클러치 유압 계통의 동적 모델
• 4. 결론 및 토의
• References

참고문헌 (Reference)

1 B. S. Yang, "Sealing Performance of Oil Seal" 3 (3): 12-17, 1987.

2 Haessig, "On the Modeling and Simulation of Friction" 113 : 1991-, pp.354-362

3 C. K. Kim, "On The Analysis of Rubber Oil Seal in Consideration of Heat Stres" 10 (10): 39-42, 1994.

4 S. W. Han, "Nume-rical Analysis of Water Seal Characteristics" 24 : 175 194-188,

5 J. U. Choi, "Finite Element Analysis of the Sealing Mechanism for an U-Cup Seal" 10 (10): 12-17, 1997.

6 M.-H. Im, "Finite Element Analysis of Primary Cup-Seal in a Clutch Master Cylinder" 10 (10): 143-150, 2002.

7 T. Raparelli, "Experimental and Numerical Study of Friction in an Elastomeric Seal for Pneumatic Cylinders" 30 (30): 547-552, 1997.

8 J.-C. Le, "An Experimental Study on The Friction Coeficient of Rubber for Clutch Master Cylinder Cup-Seal" 11 (11): 112-118, 2003.