Brake Control System Dynamic Force Distribution
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing braking systems for motor vehicles do not effectively manage the distribution of braking forces between front and rear axles, particularly when rear axle braking leads to excessive temperature conditions, which can damage brake components and affect overall braking efficiency.
Innovation Solution
A brake control system that utilizes a controller to increase front axle braking force when rear axle braking reaches a predefined threshold, either in terms of temperature or time, to supplement and potentially replace rear axle braking, thereby maintaining operational parameters within safe limits and prioritizing regenerative braking over friction braking to enhance energy recovery and reduce heat buildup.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If rear axle braking is used to provide braking force, then braking efficiency is improved, but rear axle brake temperature increases excessively causing potential damage and reduced reliability
Solution Approach 1:
The system dynamically adjusts the distribution of braking force between front and rear axles based on real-time monitoring of rear axle brake temperature. When temperature exceeds a threshold, the controller automatically increases front axle braking contribution and reduces rear axle braking, creating a dynamic adaptation to thermal conditions that prevents overheating while maintaining overall braking efficiency
Solution Approach 2:
The controller changes the operational parameters of the braking system by modifying the braking force distribution ratio between front and rear axles. This parameter adjustment allows the system to shift from rear-axle-dominated braking to a more balanced or front-axle-dominated configuration when thermal limits are approached, resolving the contradiction between efficiency and reliability
2Use of energy by moving object
If regenerative braking is prioritized for energy recovery, then energy efficiency is improved, but braking force may be insufficient when thermal capacity is depleted
Solution Approach 1:
The system implements feedback control by continuously monitoring the thermal state of the regenerative braking system and the actual braking force being applied. When the regenerative braking capacity is depleted or thermal thresholds are approached, the controller receives feedback signals and automatically compensates by increasing friction braking contribution, ensuring that total braking force requirements are always met while maximizing energy recovery when available
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach ensures balanced braking forces, reduces the risk of rear axle brake overheating, enhances energy recovery through regenerative braking, and maintains braking efficiency by dynamically adjusting front and rear axle braking forces based on operational parameters.
Implementation Method 1
The regenerative braking device can be coupled to an energy storage device, such as a traction battery
Implementation Method 2
The friction brake provided at the front axle and/or the rear axle can comprise a brake calliper having pads for engaging a brake disc
Data Source
AI summary
The present invention relates to a brake control system for a motor vehicle having front and rear axles. The brake control system includes a controller operable in response to a braking request signal. The controller is configured to control a front axle braking system for applying a front axle braking force and a rear axle braking system for applying a rear axle braking force. The controller is configured to increase the front axle braking force to supplement the rear axle braking force when an operational parameter relating to the rear axle braking system is greater than or equal to a pre-defined threshold. The invention also relates to a method of controlling the braking of a motor vehicle.