| 摘要 |
PURPOSE:To keep off any misjudgment to a hydraulic source pressure defect at the time of brake operation as securing an earlier judgment of any defect in hydraulic decompression at the nonoperation of a brake by installing a hydraulic source pressure defect judging means for judging the hydraulic source pressure defect which suspends accelerating slip brake control. CONSTITUTION:At the nonoperation of a brake, when hydraulic source pressure has gone wrong, a pressure defect is judged by way of whether it elapses more than the first setting time t1 (sec) or not by a short time as keeping the state that this pressure source pressure PA is at the alarm pressure or less. Traction control is suspended at an early stage since the hydraulic source pressure becomes troubled. At the brake operation, when the hydraulic source pressure has gone wrong, this pressure defect is judged by way of whether it elapses more than the second setting time t2 (sec) or not by a long time as keeping the state that the pressure source pressure PA is less than the alarm pressure, thus a defective misjudgment to the hydraulic source pressure is prevented from occurring. |
