| 摘要 |
PURPOSE:To prevent speed change shocks at the time of shift-up after releasing engine brake in such a way that line pressure is raised at the time of engine braking, and after the lapse of a predetermined period of time, it is lowered to the minimum value which is necessary for torque transmission. CONSTITUTION:In case where engine brake is already worked in a block 57, and EB-FLAG is 1, control goes forward to a block 73, where the speed change position of the second speed is indicated, after that the control goes ahead to a block 74, and high line pressure is indicated. This high line pressure is a high value in which a frictional element will not slide even at the time of engine braking. After the lapse of a settled time Tc, control advances to a block 76, where the low line pressure is indicated. This low line pressure is made into low pressure to rather higher extent than the line pressure at the time when throttle opening degree is zero. |
