Electronic control air pressure braking system and method
A technology of pneumatic braking and braking system, applied in the field of vehicles, can solve the problems such as the inability to achieve smooth braking of advanced emergency braking systems, the inability to accurately simulate the control effect, and the fast braking speed.
Active Publication Date: 2022-02-11
山西中科怡驰智能科技股份有限公司
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Problems solved by technology
[0005] In order to avoid excessive braking speed, related technologies apply solenoid valves to advanced emergency braking systems to achieve automatic braking. However, solenoid valves are binary valves with only two states of on / off, which cannot accurately simulate manual judgment of braking. The control effect of the pedal valve, that is, the inability to achieve smooth braking of the Advanced Emergency Braking System (AEBS)
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[0042] The following is attached Figure 2-4 The application is described in further detail.
[0043] In order to facilitate the understanding of the technical solution proposed in this application, several elements that will be introduced in the description of this application are firstly introduced here. It should be understood that the following introduction is only for understanding these elements, so as to understand the content of the embodiments of the present application, and does not necessarily cover all possible situations.
[0044] Braking deceleration: Braking deceleration (reverse acceleration value) refers to the ability of the vehicle to quickly reduce the driving speed until it stops. The most basic index to evaluate the braking performance of automobiles. Including: ①The car brakes at a certain initial speed until the braking distance to stop. ②The car brakes at a certain initial speed until the deceleration when it stops. ③The thermal fading performance ...
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The invention relates to an electronic control air pressure braking system and method. The system comprises an acceleration sensor, a rear axle air inlet valve, a rear axle air outlet valve and a controller. The controller receives the reverse acceleration value and is specifically used for executing the following steps: in a starting step, receiving a braking instruction, and generating a first control signal, wherein the first control signal is used for controlling the rear axle air inlet valve to be opened and the rear axle air outlet valve to be closed; in a quantitative control step: if the reverse acceleration value is greater than or equal to a set safety value, generating a second control signal which is used for controlling a rear axle intake valve to be closed and the rear axle air outlet valve to be opened; and in a state maintaining step: when the reverse acceleration value is smaller than a set safety value, generating a third control signal, wherein the third control signal is used for controlling the rear axle air inlet valve to be opened and the rear axle air outlet valve to be closed. The quantitative control step and the state maintaining step are executed circularly until the controller receives a braking ending instruction. The method has the effect of reducing potential safety hazards caused by too fast speed reduction.
Description
technical field [0001] The present application relates to the technical field of vehicles, in particular to an electronically controlled pneumatic braking system and method. Background technique [0002] refer to figure 1 , the most commonly used brake type for vehicle braking in the air brake system, the existing air brake system usually includes: front axle air storage tank, rear axle air storage tank, two air pressure brakes for braking the front axle and rear axle respectively Actuating device, brake pedal valve and air storage tank, the air inlet of the brake pedal valve is connected to the air outlet of the air storage tank. [0003] Take the front axle brake as an example: the front axle air brake device includes the front axle relay valve and the front axle brake air chamber; the air inlet of the front axle relay valve is connected The air outlet of the front axle is connected to the front axle brake air chamber, and the control port of the front axle relay valve i...
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IPC IPC(8): B60T8/36
CPCB60T8/3605
Inventor 张殿英古欢民雍大俊李战国
Owner 山西中科怡驰智能科技股份有限公司