Patent ID: 8506022
Filing Date: 2013-08-13
Classification: B60T

Abstract:
1. A brake apparatus, comprising: multiple wheel cylinders that apply braking forces to respective multiple wheels when being supplied with hydraulic fluid; multiple maintaining valves that are arranged upstream of the respective wheel cylinders in order to maintain hydraulic pressures in the respective wheel cylinders; pressure-regulating control valves that are arranged upstream of the multiple maintaining valves in order to control an upstream pressure which is a pressure upstream of the multiple maintaining valve, the pressure-regulating valves including a pressure-increasing linear control valve and a pressure-decreasing linear control valve; and a control unit that: wherein the control unit controls a valve opening pressure for opening the one of the pressure-increasing linear control valve or the pressure-decreasing linear control valve in the pressure-maintaining mode so that the one of the pressure-increasing linear control valve or the pressure-decreasing linear control valve is opened due to a differential pressure across the one of the pressure-regulating control valves before the pressure-control mode is switched from the pressure-maintaining mode to the pressure-regulating mode; wherein the control unit determines the setting range based on whether the pressure-regulating mode is a pressure-increase mode or a pressure-decrease mode, and wherein an upper limit of the setting range is a pressure-increase required threshold value and a lower limit of the setting range is a pressure-decrease required threshold value,