Air spring assembly control method and system
By using isolation valves in the air spring system to control the on and off of the airbag and air chamber, and adjust the opening and closing state of the isolation valve in real time according to the lateral acceleration and braking deceleration of the car, the existing air spring system is solved in emergency steering or emergency braking. The problem of rapid stiffness adjustment is achieved, which quickly responds to the air spring stiffness adjustment, improving the handling and comfort of the car.
CN115716390BActive Publication Date: 2025-02-07BEIJING CHANGAN AUTOMOBILE ENG TECH RES
Patent Information
- Application Number
- CN202211392468.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2022-11-08
- Publication Date
- 2025-02-07
- Estimated Expiration
- 2042-11-08
AI Technical Summary
Technical Problem
The existing air spring system cannot quickly adjust the stiffness during emergency steering or emergency braking, resulting in increased body displacement and the driver feels insufficient suspension support.
Method used
The isolation valve is used to control the on and off of the airbag and the air chamber, and the opening and closing state of the isolation valve is adjusted in real time according to the lateral acceleration and braking deceleration of the car, thereby quickly changing the stiffness of the air spring.
Benefits of technology
It realizes rapid adjustment of air spring stiffness under steering and braking conditions, shortens control reaction time, and improves handling and comfort.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure CN115716390B_ABST
Abstract
The present invention relates to an air spring assembly control method and system, the air spring assembly control method comprising the following steps: obtaining the lateral acceleration of a vehicle, obtaining the braking deceleration of the vehicle; in response to the lateral acceleration of the vehicle being greater than or equal to a preset lateral acceleration threshold, controlling the isolation valve to close; in response to the braking deceleration of the vehicle being greater than or equal to a preset braking deceleration threshold, controlling the isolation valve to close; after controlling the isolation valve to close, obtaining the steering wheel angle and brake light state of the vehicle, in response to the steering wheel angle being less than a preset steering wheel angle threshold and the brake light state being closed, controlling the isolation valve to open. The air spring assembly control system comprises a controller and an air spring assembly. The present invention can quickly change the stiffness of the air spring assembly, the closing and opening of the isolation valve are respectively controlled by different signal judgments, which increases the degree of freedom of matching, and can also prevent the air spring assembly stiffness from suddenly changing when the isolation valve is opened, causing jitter.
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Citation Information
Patent Citations
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