IMPROVEMENTS IN OR RELATING TO AUTOMOTIVE TRANSMISSIONS

摘要

A transmission control method improves shift feel during kickdown shifts. The release clutch is fully released at the initiation of the kickdo wn shift. The release clutch is then reapplied when the volume of the release clutch reach es a threshold capacity. The volume of the release clutch is slowly ramped down, thereby increasing turbine speed. When the turbine speed reaches a threshold, the apply clutch is actuated. The apply clutch is actuated by controlling the volume of the apply clutch according to a target volume.