| 摘要 |
<p>In order to reapply the fluid operating pressure to the braking members of the wheels after an anti-locking operation has been carried out, pumping means (8, 10, 12) are provided which are driven by the subatmospheric pressure (vacuum) existing in the inlet manifold (D) of the engine. The application of the braking pressure is controlled by a valve (3) which receives an opening command signal consisting of a train of pulses from a control device (18). At least one vacuum sensor (19) is provided which generates a monitoring signal indicative of the level of vacuum present in the inlet manifold (D). The control device (18) causes opening of the valve (3) with a command signal whose average value is inversely proportional to the level of the monitoring signal generated by the vacuum sensor (19).</p> |
