| 摘要 |
PURPOSE:To lower a speed change shock by controlling a working fluid pressure of an automatic transmission on the basis of a lower opening out of the openings of a 1st and a 2nd throttle valves which are opened/closed by means of an acceleration pedal and traction control. CONSTITUTION:A working fluid pressure of an automatic transmission (b) is controlled on the basis of a lower opening out of the openings of a 1st throttle valve (f) and a 2nd throttle valve (g) which are opened/closed by means of an acceleration pedal (e) whose openings are detected by means of a lower opening side detection means (h), even in the case of the 2nd throttle valve (g) having been opened/closed by the operation of a traction controller (d). Accordingly, the value of the working fluid pressure becomes the value which is i accordance with an actual output of an engine (c) controlled by means of a tandem throttle, and a powerful conclusion shock of a friction element (a) does not occur at the time of the operation of the traction controller (d). Thus, an improvement of the riding comfortability of a vehicle can be realized. |
