Brake control device for vehicle

Patent metadata

Field	Value
Publication number	US-11453373-B2
Application number	US-201816650952-A
Country	US
Kind code	B2
Filing date	Sep 28, 2018
Priority date	Sep 28, 2017
Publication date	Sep 27, 2022
Grant date	Sep 27, 2022

Abstract

A brake control device adjusts a fluid pressure of a brake fluid in a wheel cylinder, and is provided with: a fluid passage which connects a master cylinder and the wheel cylinder; a first electromagnetic valve which is provided in the fluid passage; a second electromagnetic valve which is provided in the fluid passage between the first electromagnetic valve and the wheel cylinder; a fluid pump which is driven by an electric motor, suctions the brake fluid from the fluid passage at a suction part between the first electromagnetic valve and the second electromagnetic valve, and discharges the brake fluid to the fluid passage at a discharge part between the first electromagnetic valve UP and the second electromagnetic valve; a check valve which is provided between the fluid pump and the discharge part; and a controller which controls the first electromagnetic valve, the second electromagnetic valve, and the electric motor.

First claim

The invention claimed is:

1. A brake control device for a vehicle that adjusts a fluid pressure of a brake fluid in a wheel cylinder provided on wheels of a vehicle, the brake control device comprising:
a fluid passage that connects a master cylinder and the wheel cylinder of the vehicle;
a first electromagnetic valve provided in the fluid passage;
a second electromagnetic valve provided in the fluid passage between the first electromagnetic valve and the wheel cylinder;
a fluid pump that is driven by an electric motor to suction the brake fluid from the fluid passage at a suction part between the first electromagnetic valve and the master cylinder and discharge the brake fluid to the fluid passage at a discharge part between the first electromagnetic valve and the second electromagnetic valve;
a check valve provided between the fluid pump and the discharge part; and
a controller that controls the first electromagnetic valve, the second electromagnetic valve, and the electric motor, wherein
the controller is configured to execute a vibration suppression control for setting the first electromagnetic valve and the second electromagnetic valve at a close position immediately before the electric motor is stopped.

2. The brake control device for the vehicle according to claim 1 , wherein
the controller is configured to,
determine whether a brake operation member of the vehicle is operated,
permit execution of the vibration suppression control when the operation is unperformed, and

prohibit execution of the vibration suppression control when the operation is performed.

Assignees

• Advics Co Ltd

Inventors

• Takeya Yusuke

Classifications

• B60T13/686 Primary

  in hydraulic systems or parts thereof · CPC title

• B60T8/17

  Using electrical or electronic regulation means to control braking {(detecting or indicating faulty operation B60T8/885)} · CPC title

• F15B21/008

  Reduction of noise or vibration · CPC title

• F15B7/06

  Details (F15B15/00 takes precedence) · CPC title

• B60T13/162

  Master cylinder mechanically coupled with booster · CPC title