| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a control device of an automatic transmission improving shift feeling that a driver receives by reducing the influence of individual variation in rising characteristics of hydraulic pressure of a friction engagement element in the automatic transmission. <P>SOLUTION: The control device of the automatic transmission calculates instruction values QAT0, QAT1, QAT2 of the hydraulic pressure to be supplied to a hydraulic pressure clutch (friction engagement element) of an intended gear stage, and on the basis of the calculated instruction values of the hydraulic pressure, supplies the hydraulic pressure. The supplied hydraulic pressures QAT1, QAT2 compare a temporal change amount (inclination A) of acceleration G (G waveform) of a vehicle until the supplied hydraulic pressures QAT1, QAT2 reach a predetermined value with a temporal change amount (inclination B) after reaching the predetermined value (S300 to S310, S314). In accordance with the comparison result, the instruction value QAT1 of the hydraulic pressure until reaching the predetermined value, is increased or decreased (S312, S316 to S318). At the time of subsequent speed changes, on the basis of the changed hydraulic pressure, the hydraulic pressure is supplied to the hydraulic clutch of the intended gear stage. <P>COPYRIGHT: (C)2012,JPO&INPIT |
