Patent ID: 8668281

Claim:
A brake hydraulic pressure control device for a vehicle, configured to control hydraulic pressure generated in a hydraulic pressure source to transmit the hydraulic pressure to a wheel brake, the brake hydraulic pressure control device comprising: a normally open linear solenoid valve arranged in a hydraulic pressure passage from the hydraulic pressure source to the wheel brake, the normally open linear solenoid valve being configured to adjust a valve closing force depending on an power supply amount; a normally closed solenoid valve arranged in a hydraulic pressure passage from the wheel brake to the hydraulic pressure source; and a controller configured to control the power supply amount to the normally open linear solenoid valve and the normally closed solenoid valve, thereby controlling switching of the hydraulic pressure within the wheel brake between a pressure increasing state, a pressure holding state, or a pressure reducing state, wherein: when shifting to the pressure increasing state from the pressure reducing state or the pressure holding state is made, the controller controls the power supply amount so that increasing is made at a first gradient up to a turning point target hydraulic pressure, and increasing is made at a second gradient gentler than the first gradient from the turning point target hydraulic pressure up to the end of the increasing; the controller subtracts an offset pressure from the hydraulic pressure at the time of previous pressure reduction start, thereby determining the turning point target hydraulic pressure; the offset pressure is obtained from a preset data table which sets a relationship between the offset pressure and the hydraulic pressure at the time of the previous pressure reduction start or a fixed value depending on a type of vehicle; and the relationship is set such that the offset pressure decreases as the hydraulic pressure at the time of the pressure reduction start is lower.