HYDRAULIC PRESSURE ADJUSTMENT DEVICE, HYDRAULIC PRESSURE ADJUSTMENT SYSTEM, BRAKE SYSTEM AND CONTROL METHOD

Title:

HYDRAULIC PRESSURE ADJUSTMENT DEVICE, HYDRAULIC PRESSURE ADJUSTMENT SYSTEM, BRAKE SYSTEM AND CONTROL METHOD

Document Type and Number:

WIPO Patent Application WO/2021/226889

Kind Code:

A1

Abstract:

A hydraulic pressure adjustment device, a hydraulic pressure adjustment unit, a brake system and a control method. A liquid outlet pipe of a first hydraulic chamber (16) is provided in sections on a push rod support portion (14) and a push rod (13), such that when a piston (12) is located at an inner dead center of a piston stroke, a first hydraulic pressure adjustment port (14a) located on the push rod support portion (14) is in communication with a second hydraulic pressure adjustment port (13a) located on the push rod (13), and when the piston (12) is located at the position other than the inner dead center of the piston stroke, the first hydraulic pressure adjustment port (14a) is not in communication with the second hydraulic pressure adjustment port (13a), and the situation that a control valve needs to be specially provided for the first hydraulic chamber (16) in a traditional hydraulic adjustment device so as to control connection and disconnection of a liquid outlet pipe corresponding to the first hydraulic chamber (16) is avoided.

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Inventors:

ZHANG YONGSHENG (CN)
YANG WEIMIAO (CN)
ZHANG WEI (CN)

Application Number:

PCT/CN2020/090091

Publication Date:

November 18, 2021

Filing Date:

May 13, 2020

Export Citation:

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Assignee:

HUAWEI TECH CO LTD (CN)

International Classes:

B60T13/66; B60T13/14; B60T13/68

Foreign References:

CN110758365A	2020-02-07
CN206615206U	2017-11-07
FR2931769A1	2009-12-04
DE102012221146A1	2014-05-22

Other References: