| 摘要 |
PURPOSE:To prevent the control characteristic of a wheel from worsening, by constituting a device so as to cut off a fluid pressure route, which supplies a line pressure to various valve parts actuating various speed change elements, when a car body speed is in a predetermined value or more, further when an antiskid control is performed in the time of applying a brake. CONSTITUTION:An antiskid device unit 1, which controls a pressure adjusting valve adjusting a pressure of brake fluid in accordance with a change of wheel speed for a car body speed when a brake is applied, performs an antiskid control. Here the unit 1 provides an interface part 5 which comprises FF elements 2a-2d, OR element 3 and an AND element 4 generating an operating signal, when a car body speed is in a predetermined value or more further when an antiskid control is perfomed in the time of applying the brake, and the operating signal to be continued before a brake control is suspended or the car body speed decreases to the predetermined value or less. And when the operating signal is generated, a control valve 6 in a fluid pressure line, reaching various valve parts actuating a speed change element of an automatic transmission, is controlled so as to be closed.
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