Speed change control device for an automatic

Speed ​​change control device for an automatic transmission (2) connected between an internal combustion engine (1) and a drive wheel (50) is arranged, and a friction element (20) which is in engagement to set a predetermined transmission shift position when the oil pressure is supplied thereto, and having a hydraulic pump (30) for generating an oil pressure, wherein the speed change control apparatus, an oil temperature detecting means (7, 15) for detecting a temperature (T a speed detection means (7, 16) for detecting a rotational speed (M a timing setting means for setting, based on the hydraulic fluid temperature (T an oil pressure control means (5, 7, 34) provided for adjusting of the hydraulic pump (30) to the friction element (20) oil pressure thereby to establish the predetermined gear shift position and for performing a Kolbentothubsteuerung for eliminating the Kolbentothubs in accordance with the control time (T