| 摘要 |
PROBLEM TO BE SOLVED: To operate a frictional element rapidly in the case where an oil temperature is low when a speed stage is changed by arranging a means for correcting feed oil pressure on the basis of an input torque so as to raise feed oil pressure in a torque phase higher than that when the oil temperature is high, when the oil temperature detected by an oil temperature detecting means is low. SOLUTION: A base pressure correcting rate and an inertia phase correcting pressure are calculated on the basis of an oil temperature (R1), (R2), and also base shift pressure is set (R3), and it is judged whether the torque phase is transferred into the inertia phase by a shift up flag (R4). At stage R8 it is judged whether it is the inertia phase or not in the case of the inertia phase it is judged whether a turbine rotational speed changing ratio is stabilized (R9), a final feed back correcting pressure is set when the ratio is stabilized (R10), and shift pressure is calculated by the corrected base shift pressure and a feed back correcting pressure (R11). It is thus possible to control stable shift operation, and it is also possible to prevent generation of a sift shock. |
