VEHICLE BRAKE CONTROL DEVICE

摘要

A brake control device includes a pilot-type pressure-increasing device. A pilot unit of the pressure-increasing device is connected to a power hydraulic pressure generating device via a pilot input passage. A linear control valve that is also used for adjusting a hydraulic pressure of a wheel cylinder is provided on the pilot input passage. A brake ECU checks whether the pressure-increasing device is normally activated or not based on a hydraulic pressure outputted from the pressure-increasing device when the linear control valve is energized for an activation check. Thus, the brake ECU can perform the activation check of the pressure-increasing device without requiring a driver's operation on a brake pedal.

主权项

1. A vehicle brake control device including:
a wheel cylinder provided to each of plural wheels, and receiving a hydraulic pressure of operating fluid to apply braking force to the wheels; a pedal effort hydraulic pressure generating device that generates a hydraulic pressure by a pedal effort caused by a driver's depression operation on a brake pedal; a power hydraulic pressure generating device that generates a hydraulic pressure by driving an electric pressure applying device; a pressure adjusting device that adjusts a hydraulic pressure outputted from the power hydraulic pressure generating device, and supplies the adjusted hydraulic pressure to each wheel cylinder; a hydraulic control unit that controls an activation of the pressure adjusting device; a pressure-increasing device that is a pilot-type hydraulic controller activating without using electric energy, and includes a pilot unit receiving a hydraulic pressure outputted from the pedal effort hydraulic pressure generating device, the pressure-increasing device being capable of outputting a hydraulic pressure higher than the hydraulic pressure outputted from the pedal effort hydraulic pressure generating device by utilizing the hydraulic pressure outputted from the power hydraulic pressure generating device; a servo pressure passage that is a passage for supplying a hydraulic pressure outputted from the pressure-increasing device to at least one wheel cylinder; and a check unit that checks whether the pressure-increasing device is normally activated or not, the vehicle brake control device comprising:
a check pilot pressure supply unit that adjusts the hydraulic pressure outputted from the power hydraulic pressure generating device to an activation check hydraulic pressure, and supplies the activation check hydraulic pressure to the pilot unit of the pressure-increasing device, wherein the activation check unit checks whether the pressure-increasing device is normally activated or not based on the hydraulic pressure outputted from the pressure-increasing device during when the activation check hydraulic pressure is supplied to the pilot unit of the pressure-increasing device by the check pilot pressure supply unit.