PROBLEM TO BE SOLVED: To provide a vehicular brake fluid pressure control device that is suppressed from determining by mistake whether or not there is an abnormality in controlled fluid pressure acting on a wheel brake.SOLUTION: The fact that a wheel deceleration differential value Daw, variations of wheel deceleration Aw is made larger than a predetermined threshold Dawth by performing pressure reduction control shows that braking force acting on wheels is weakened by pressure reduction control, which means that controlled fluid pressure has been acted on the wheels until the pressure reduction control is performed. In other words, it can be determined that the controlled fluid pressure has not been abnormal until the pressure reduction control is performed. Thus, the vehicular brake fluid pressure control device can be suppressed from determining by mistake whether there is an abnormality in the controlled fluid pressure.SELECTED DRAWING: Figure 1
【課題】車輪ブレーキに作用する制御液圧の異常の有無の誤判定が抑制される車両用ブレーキ液圧制御装置を提供する。【解決手段】減圧制御することにより車輪減速度Awの変化量である車輪減速度微分値Dawが所定閾値Dawthより大きい、ということは、減圧制御により車輪にかかる制動力が弱まったといえる。従って、減圧制御までは車輪に制御液圧がかかっていたといえる。つまり、減圧制御までは制御液圧が異常ではなかった、と判定できる。よって、制御液圧の異常判定の誤判定を抑制することができる。【選択図】図1
VEHICULAR BRAKE FLUID PRESSURE CONTROL DEVICE
車両用ブレーキ液圧制御装置
2017-10-05
Patent
Electronic Resource
Japanese
IPC: | B60T Bremsanlagen für Fahrzeuge oder Teile davon , VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF |
European Patent Office | 2018
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