Abstract

This study is concerned with the investigation of characteristics or an AMT (Automated Manual Transmission) which arc composed of clutch part and transmission part. When a shifting signal is received from the controller, the clutch is disengaged first, and shifting action including selecting action is followed, and then the clutch is engaged last. The characteristics of transmission shifting response arc affected by various parameters or clutch and transmission control clements. Analytical results arc in fair agreement with experimental results. It is found that the operating pressure level is the most important for the response of AMT characteristics, and that the other parameters such as natural frequency and damping ratio of the control valve are less important.

• Keywords: Automated manual transmission(자동화 수동 변속기),Natural frequency(고유 주파수),Damping ratio(감쇠계수),Shifting action(변속동작),Selecting action(변속단 선택 동작)