| 摘要 |
<p>PURPOSE:To efficiently restrain a speed changing shock by setting et input torque in accordance with input torque of an automatic transmission and inertia torque following change of rotation of the transmission and simulatneously, lowering the target input torque at the time of changing speed by way of setting target hydraulic pressure. CONSTITUTION:Supposing that shift up speed changing is carried out in the state where torque down is possible, target torque Tm at the time of speed changing is set at a point of time t1 when shift up judgement is carried out, and target line pressure P is set by input torque hydraulic pressure set in accordance with the target torque Tm at the time of speed changing and inertia torque hydraulic pressure Pi found in correspondence with target speed changing time Ts from an inertia torque hydraulic pressure setting map. Thereafter, after output shaft torque passes a temporarily lowering torque phase T, engine torque Te is lowered so that the target torque Tm is realized at a point of time t2 when output torque is transferred to a rising inertia phase 1, and the inertia torque hydraulic pressure Pi is also reduced.</p> |
