Transactions of the Korean Society of Automotive Engineers (한국자동차공학회논문집)
- Volume 6 Issue 2
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- Pages.54-66
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- 1998
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- 1225-6382(pISSN)
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- 2234-0149(eISSN)
Analytical Inbestigation of the shift Characteristics of a Passenger Car Automatic Transmission
승용차용 자동변속기 변속 특성의 해석적 고찰
Abstract
In a passenger car automatic transmission, the gear ratio is determined by the combination of clutches and brakes, and each element of th planetary gear set is rotated or held stationary by the action of them. In this study, to investigate the shift characteristics of automatic transmission, the equations of motion are derived from the dynamic model of Ravigneaux type planetary gear set and solved analytically. The shift characteristics of each element of planetary gera set during gear ratio change are investigated by considering the torques and velocities of input, reaction and output elements.
Keywords
- Automatic Transmission;
- Ravigneaux Type Planetary Gear Set;
- Shift Characteristics;
- Gear Ratio Change
- 자동변속기;
- 라비뉴형 유성기어장치;
- 변속특성;
- 기어변속;