SPEED CHANGE CONTROL DEVICE FOR AUTOMATIC TRANSMISSION

摘要

PROBLEM TO BE SOLVED: To improve a speed change quality by controlling a speed change so that the shock by a foot detaching and the speed change shock by a real speed change are absorbed each other at the foot detach upshift time from a high throttle opening. SOLUTION: By inputting the signal from a throttle opening sensor 12 for detecting the throttle opening TVO of an engine 1 and the signal from an oil temperature sensor 16 for detecting the oil temperature T and carrying out a prescribed control program, the controller 11 for controlling the speed change of an automatic transmission 2 judges at the upshift judging time whether it is the foot detach upshift from the high throttle opening or not and in the case of the foot detach upshift from the high throttle opening, an oil pressure control for quickening the raise of the oil pressure to a friction element relating to the speed change than the case of the foot detach upshift from the low throttle opening is carried out.