HYDRAULIC CONTROL DEVICE, BRAKE SYSTEM, AND AUXILIARY HYDRAULIC UNIT FOR USE IN EVENT OF FAILURE

WIPO Patent Application WO/2018/168307

A1

Provided is a hydraulic control device capable of suppressing complication. This hydraulic control device comprises: a connection fluid path which connects a master cylinder and a wheel cylinder portion; a shutoff valve disposed in the connection fluid path; a first hydraulic source capable of supplying a brake fluid to a portion of the connection fluid path located to the side of the wheel cylinder portion with respect to the shutoff valve; a control unit capable of executing boost control to control the first hydraulic source and the shutoff valve and supply the brake fluid to the wheel cylinder portion when a brake pedal is operated; an opening-closing valve which is disposed in the connection fluid path and operates in the closing direction when the brake pedal is operated in a state in which the boost control is not in execution; and a second hydraulic source capable of supplying the brake fluid to a portion of the connection fluid path located to the side of the wheel cylinder portion with respect to the opening-closing valve, and capable of operating when the brake pedal is operated in a state in which the boost control is not in execution.

MARUO RYOHEI (JP)
NAKAZAWA CHIHARU (JP)
WATANABE ASAHI (JP)
OOSAWA TOSHIYA (JP)

PCT/JP2018/005165

September 20, 2018

February 15, 2018

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HITACHI AUTOMOTIVE SYSTEMS LTD (JP)

B60T17/18; B60T8/17; B60T13/122

WO2014184840A1

2014-11-20

JP2012158213A	2012-08-23
JP2018034733A	2018-03-08
JP2017213979A	2017-12-07

ONO, Shinjiro et al. (JP)

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