| 摘要 |
PURPOSE:To prevent frequent repetitions of unnecessary shift-up and shift-down by providing such an arrangement that a shift-up inhibiting means inhibits a shift-up when a variation rate of accelerator opening degree exceeds a predetermined value. CONSTITUTION:In a CPU 2, an accelerator opening degree variation rate computing means 14 computes a variation rate of an accelerator opening degree in accordance with a signal from an accelerator opening degree detector 12. Further, a shift-up inhibiting means 15 inhibits a shift-up of an automatic transmission 16 if the variation rate of the accelerator opening degree exceeds a predetermined value. Accordingly, when the accelerator is opened and closed at a rate higher than the predetermined value, no shift-up is carried out. As a result, frequent repetitions of shift-up and shift down may be eliminated. Further, the relationship between an accelerator opening degree in a memory means 3 and a vehicle speed is set to shift a shift point so that the vehicle speed detected by a sensor 13 is shifted up at a predetermined high speed when the accelerator opening degree is below a predetermined accelerator opening degree, inhibiting a shift-down, thereby it is possible to enhanced the effect of engine brake. |
