| 摘要 |
PURPOSE:To learn and correct an initialization oil pressure command value on the basis of a ratio of the number of revolutions of an AT (automatic transmission) input shaft to an inertia phase determining time. CONSTITUTION:When a transmission deciding unit 51 determines up-shift, an initialization oil pressure command value map retrieving unit 53 computes an initialization oil pressure command value D0 from the initialization oil pressure command value map on the basis of the present AT oil temperature and a throttle opening signal theta. The computed initialization oil pressure command value D. is commanded to a solenoid valve 3 by means of a control signal commanding unit 54 from the output of a speed change instruction until accomplishment of an inertia phase. An inertia phase decision time detecting unit 55 detects a time (inertia phase decision time) TD required for reducing the number of revolutions NT of an AT input shaft by the predetermined number of revolutions DELTANT in the inertia phase, and on the basis of the inertia phase decision time TD, the initialization oil pressure command value D0 is corrected in a comparison computing unit 56 so as to be stored in the initialization oil pressure command value map. |
