Vehicle Brake Fluid Pressure Distribution Control for Deceleration Response
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Solution Overview
Problem
Existing collision-damage reduction brake systems experience delays in deceleration response due to uniform brake fluid pressure distribution across all four wheels, which can lead to insufficient deceleration and increased collision risk, especially in urgent situations.
Innovation Solution
A vehicle control device that dynamically adjusts the distribution ratio of brake fluid pressure between the front and rear brakes based on collision risk and traveling scenarios, prioritizing pressure distribution to either the front or both sets of brakes to enhance deceleration responsiveness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the same brake fluid pressure is generated at all four wheels at all times, then the braking system is simple to control, but a delay in deceleration response occurs and the vehicle cannot sufficiently decelerate in urgent situations
Solution Approach 1:
The brake fluid pressure distribution is made dynamic rather than static. The control unit adjusts the pressure distribution ratio between front and rear brakes in real-time based on collision risk levels and vehicle traveling scenes, enabling the system to adapt to different emergency situations and improve deceleration response speed.
Solution Approach 2:
The system changes the brake fluid pressure distribution ratio parameter based on collision risk and traveling scene conditions. By varying this parameter dynamically, the system optimizes deceleration performance for different emergency scenarios without requiring complex structural modifications to the braking system.
2Reliability
If brake fluid pressure is distributed to front and rear brakes based on collision risk, then deceleration effectiveness is improved, but the control system becomes more complex
Solution Approach 1:
The control unit receives feedback from sensors detecting collision risk levels and vehicle traveling scenes. Based on this feedback, the system automatically adjusts the brake fluid pressure distribution ratio to appropriate front and rear brakes, improving collision avoidance reliability through closed-loop control.
Solution Approach 2:
The braking system is segmented into front and rear brake circuits with independent pressure control. The control unit can selectively apply different pressure distribution ratios to front and rear brakes based on collision risk, allowing optimized deceleration control without requiring complete system redesign.
Data Source
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AI summary
The present invention provides a vehicle control device that can reduce the delay in the deceleration response of a vehicle to a deceleration command. The present invention modifies the distribution ratio of brake fluid pressure between front brakes and rear brakes on the basis of lateral motion information, vehicle information, and a collision risk or a traveling scene obtained from information pertaining to the external surroundings. The brake fluid pressure is distributed to only one of the front brakes or the rear brakes.