HYDRAULIC BRAKING SYSTEM

摘要

Vibrations of a hydraulic pressure in an upstream portion due to operations of a slip control device during anti-lock control are transmitted to a control pressure chamber via a pressurizing piston of a master cylinder and a control piston of a regulator. During anti-lock control, in contrast, a pressure-increase linear valve and a pressure-reduction linear valve are opened, allowing change in volume of the control pressure chamber, resulting in reduction in stiffness. This reduction suppresses vibrations of a hydraulic pressure in the control pressure chamber, resulting in suppression of vibrations of a hydraulic pressure in a front pressure chamber. As a result, it is possible to reduce the lowering in control accuracy for a hydraulic pressure in a brake cylinder in anti-lock control using the hydraulic pressure in the front pressure chamber, which can well avoid a long braking distance.

主权项

1. A hydraulic braking system, comprising:
a plurality of brake cylinders respectively provided for a plurality of wheels of a vehicle; a hydraulic-pressure producing device; and a slip control device provided between the hydraulic-pressure producing device; and the plurality of brake cylinders and configured to control a hydraulic pressure in each of at least one of the plurality of brake cylinders to control a slipping state of each of the plurality of wheels, the hydraulic-pressure producing device; comprising a stiffness reducer configured to reduce stiffness in an upstream portion located upstream of the slip control device such that the stiffness is less in a case where the slip control device is in an operating state than in a case where the slip control device is in a non-operating state.