US 2024/0174207 A1 · Hydraulic Apparatus, Brake System, and Vehicle

Abstract

Embodiments of this application provide a hydraulic apparatus, a brake system, and a control method. The brake system provided in embodiments of this application includes a master cylinder, a first booster, and a second booster. The brake system provided in embodiments of this application can implement rich braking functions by using the first booster or the second booster. In addition, the brake system provided in embodiments of this application has a multi-redundancy design. This can ensure that the brake system can still meet a plurality of braking function requirements of a vehicle when a controller or a key solenoid valve fails, improve safety of the brake system, ensure pedal feeling of a driver, and bring more stable and comfortable driving experience to the driver, which is suitable for brake systems of intelligent and electric vehicles.

Claims20

Dependent claims

A brake system, wherein the brake system comprises a master cylinder (1), a first booster, a second booster, and at least one first interface;

the first booster is connected to the at least one first interface through at least one first control valve (31, 32, 33, 34);
and
the master cylinder (1) comprises a first main cavity (1i), the first main cavity (1i) is connected to a second control valve (13) through the second booster, and the second control valve (13) is connected to the at least one first interface through the at least one first control valve (31, 32, 33, 34).

A method for controlling a brake system, wherein the brake system comprises a master cylinder, a first booster, a second booster, and at least one first interface;

the first booster is connected to the at least one first interface through at least one first control valve (31, 32, 33, 34), the master cylinder comprises a first main cavity (1i), the first main cavity (1i) is connected to a second control valve (13) through the second booster, and the second control valve (13) is connected to the at least one first interface through the at least one first control valve (31, 32, 33, 34);
and
the method comprises:
obtaining a first brake requirement;
and
when the brake system is in a first state, controlling the second booster to work, wherein
the first state comprises at least one of the following:
the first booster is faulty, the second control valve (13) is faulty, and the at least one first control valve (31, 32, 33, 34) is faulty.

5 more elements

Dependencies are inferred from the claim text.

Facts

Application

18/431,430Filed 2 Feb 2024

Priority

3 Aug 2021

Published

30 May 2024

Term ends

Not estimatedThe source records don’t support an estimate.

Classification14 codes

B60T 8/40
Having a fluid pressure regulator responsive to a speed condition: comprising an additional fluid circuit including fluid pressurising means for…
B60T 13/146
Master cylinder integrated or hydraulically coupled with booster: part of the system directly actuated by booster pressure
B60T 7/042
Foot actuated: by electrical means, e.g. using travel or force sensors
B60T 8/171
Using electrical or electronic regulation means to control braking: detecting parameters used in the regulation; Measuring values used in the…

Hydraulic Apparatus, Brake System, and Vehicle

Life of this patent

Hydraulic Apparatus, Brake System, and Vehicle

Life of this patent

Abstract

Claims20