| 摘要 |
A method for controlling slip of a direct-drive clutch of a torque converter during a gear change in an automated transmission, that includes sending, as a set point, values of a cyclic opening ratio to an electro-valve for adjusting hydraulic pressure of the direct-drive clutch, wherein the initial value is determined from parameters resulting from a mapping. The value of the initial cyclic opening ratio sent as a set point is the value of the nominal initial cyclic opening ratio determined by a mapping, that is corrected by a predetermined correction coefficient memorized at the end of a previous similar gear change, from a comparison between a value of a slip representative of the slip values measured during the previous change and that of a theoretical reference slip corresponding to a nominal engine speed and turbine speed. |
