Brake master cylinder, hydraulic braking system and vehicle
A brake master cylinder and brake pressure technology, which is applied in the fields of vehicles, brake master cylinders and hydraulic brake systems, can solve the problems of complicated pipeline connection of brake devices and influence on brake reliability, etc.
Active Publication Date: 2021-09-28
BYD CO LTD
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- Application Information
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Problems solved by technology
[0005] The brake device includes an independent stroke simulator, and the simulated piston of the stroke simulator is still operated by the brake fluid supplied from the master cylinder, which makes the pipeline connection of the brake device more complicated. In case of fluid leakage, it will affect the braking reliability
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[0027] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.
[0028] refer to figure 1 , figure 2 , image 3 and Figure 4 as well as Figure 5 With the structure shown, the brake master cylinder provided by the present invention includes a master cylinder body 1, a pedal sensing chamber piston 2 and a brake pressure chamber piston 3, wherein a cylinder chamber is formed in the master cylinder body 1; the pedal sensing chamber piston 2 and the brake pressure chamber piston 3 The brake pressure chamber piston 3 is elastically spaced in series in the axial direction and is arranged in the cylinder chamber in a sealed and movable manner, so as to separate the brake pressure chamber 4 and the pedal sense chamber 5 in the cy...
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The invention relates to the technical field of hydraulic braking, and discloses a brake master cylinder, a hydraulic braking system and a vehicle. The brake master cylinder comprises a master cylinder body with a cylinder cavity, a pedal sensing cavity piston and a brake pressure cavity piston, and the pedal sensing cavity piston and the brake pressure cavity piston are elastically and axially connected in series at intervals and can be movably arranged in the cylinder cavity in a sealed mode so that the interior of the cylinder cavity can be divided into a brake pressure cavity and a pedal sensing cavity. A pedal sensing cavity piston elastic return piece is arranged in the pedal sensing cavity, a brake pressure cavity piston elastic return piece is arranged in the brake pressure cavity, and the pedal sensing cavity piston and the brake pressure cavity piston are used for moving under the driving of the brake pedal so as to compress the pedal sensing cavity piston elastic return piece and the brake pressure cavity piston elastic return piece; the pedal sensing cavity has a pedal sensing cavity liquid inlet used for being connected with a hydraulic oil storage device, and the brake pressure cavity has an oil inlet and an oil outlet used for being connected with a brake oil way. And the brake master cylinder can realize a pedal feeling simulation function.
Description
technical field [0001] The invention relates to the technical field of hydraulic braking, in particular to a brake master cylinder, a hydraulic braking system and a vehicle. Background technique [0002] The brake-by-wire system is a common vehicle braking solution in the industry. Compared with the traditional braking system, one of its major features is that the hydraulic coupling relationship between the brake pedal and the caliper wheel cylinder is released. But this design also creates a problem, that is, the driver's foot loses the feedback that should be generated by the hydraulic reaction force of the caliper wheel cylinder, which is defined in the industry as pedal feel. [0003] In order to solve the problem of the driver's pedal feel when braking, major brake system suppliers have proposed the concept of simulating the pedal feel when designing the system scheme, that is, through a device generally called a "travel simulator", The internal elastic element exerts ...
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IPC IPC(8): B60T13/14B60T8/40
CPCB60T13/145B60T8/409
Inventor 刘彻郭海张鹏
Owner BYD CO LTD