토크컨버터 댐퍼 스프링의 강성 변화가 동적히스테리시스에 미치는 영향
Effect of the Dynamic Hysteresis according to Spring Stiffness Change on Torque Converter Damper Spring
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The general auto transmission uses the torque converter that has a good vibration damping force bylaunching performance and damping effect as power transfer unit. The vehicle equipped with autotransmission uses Lock up clutch system to improve the fuel efficiency. The Lock up clutch system isthe major factor of the devices that increase the torque from engine to transmission in specific conditionand also consist of the damper springs to transfer the torque stably. Damper spring controls the vibrationof power transfer units and improve the impression of riding and durability, by being damping functionon change torque from engine. In addition, not only the appearance and performance, but also these sensitive qualities as likevibration and noise can also be main factor to buy a car. Recently, in order to absorb the low vibrationcaused by vehicle structure vibration, the Low-stiffness damper has been on the rise. The damper springshould be considered and designed, considering the engine characteristic and direct connect of lock upclutch due to the stiffness of the spring and hysteresis has a major effects to the damper characteristic. This study can be used for analyzing the major factors to effect the NVH characteristic byevaluating the damper’s hysteresis according to change of spring stiffness.
Abstract
The general auto transmission uses the torque converter that has a good vibration damping force bylaunching performance and damping effect as power transfer unit. The vehicle equipped with autotransmission uses Lock up clutch system to improve the fuel efficiency. The Lock up clutch system isthe major factor of the devices that increase the torque from engine to transmission in specific conditionand also consist of the damper springs to transfer the torque stably. Damper spring controls the vibrationof power transfer units and improve the impression of riding and durability, by being damping functionon change torque from engine. In addition, not only the appearance and performance, but also these sensitive qualities as likevibration and noise can also be main factor to buy a car. Recently, in order to absorb the low vibrationcaused by vehicle structure vibration, the Low-stiffness damper has been on the rise. The damper springshould be considered and designed, considering the engine characteristic and direct connect of lock upclutch due to the stiffness of the spring and hysteresis has a major effects to the damper characteristic. This study can be used for analyzing the major factors to effect the NVH characteristic byevaluating the damper’s hysteresis according to change of spring stiffness.
참고문헌 (7)
- J. S. Park, "A Study on Characteristics and Durability for Lock-up Clutch Damper Spring of Torque Converter", Conference Proceeding of the KSAE, pp.2326~2330 (2006)
- 김광석, "차량의 동력전달장치 모델 개발에 관한 연구", 한국기계기술학회지, 13(3), pp.17~24 (2011), 한국기계기술학회
- G. J. Park, "Dynamic Hysteresis Study of Torque Converter Damper Spring using Rigid Multibody", Conference Proceeding of the KSAE, pp.684~689 (2009)
- C. W. Son, "A Study on Effect of the Dynamic Hysteresis of Torque Converter Damper Spring on the Spring Stiffness", Conference Proceeding of the KSAE, pp.1497~1501 (2009)
- 여문수, "MRF 댐퍼 응용 야지주행차량의 승차감 제어기법에 관한 연구", 한국기계기술학회지, 11(4), pp.73~79 (2009), 한국기계기술학회
- G. W. Kim, "Analysis of Torsional Vibration of Torque Converter Lock-up Clutch with Damper", KSAE Annual Spring Conference Proceedings, 2, pp.819~824 (2002)
- J. S, Moon, "The Analysis of Torque Converter Lock up Spring by using Nonlinear Spring", KSAE Annual Spring Conference Proceedings, pp.862~867 (2002)