Patent ID: 6729698
Filing Date: 2004-05-04
Classification: B60T

Abstract:
A hydraulic brake device comprising:a hydraulic pressure generating device for generating and outputting a hydraulic pressure in accordance with a brake operational amount; a wheel cylinder operated by the hydraulic pressure directly or indirectly supplied from the hydraulic pressure generating device for applying a braking force to a vehicle wheel; a brake operational amount detection means for detecting the brake operational amount; an output hydraulic pressure detection means for detecting an output hydraulic pressure outputted from the hydraulic pressure generating device; a hydraulic circuit for supplying the hydraulic pressure to the wheel cylinder; and an air-containing detection means for detecting air included in the hydraulic circuit by a response time relating to a rise of the output hydraulic pressure detected by the output hydraulic pressure detection means relative to a start of a rise of the brake operation amount detected by the brake operational amount detection means.