Brake Arrangement with Temperature-Dependent Pressure Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional brake systems used for both service braking and retarder braking are prone to overheating, which can lead to reduced braking effectiveness and safety risks, especially during prolonged retarder braking followed by conventional braking.
Innovation Solution
A brake arrangement with a temperature sensor and a control system that reduces brake pressure in the first active state if the coolant temperature exceeds a predefined value, preventing overheating and allowing for independent brake pressure adjustment in a second active state for service braking.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the service brake is used for both conventional braking and retarder braking, then the brake system can perform multiple functions, but the brake is at risk of becoming far too hot during retarder braking
Solution Approach 1:
The brake system is segmented into two independent active states: a first active state for retarder braking with temperature monitoring and pressure reduction capability, and a second active state for service braking with full braking capability. This segmentation allows the same physical brake to perform multiple functions while preventing thermal overload through state-dependent control
Solution Approach 2:
The brake pressure is made dynamic and adjustable based on the operating state and temperature conditions. In the first active state, the brake pressure can be reduced by the control arrangement when temperature exceeds thresholds. In the second active state, full brake pressure is available. This dynamic adaptation resolves the contradiction by adjusting brake characteristics to match operational requirements
2Productivity
If the brake force is increased to reduce vehicle speed during retarder braking, then the basic speed is reduced and heat generation is decreased, but the brake may still overheat in certain situations
Solution Approach 1:
A temperature sensor continuously monitors the brake coolant temperature and provides feedback to the control arrangement. Based on this feedback, the control system automatically adjusts the brake pressure in the first active state, reducing it when temperature exceeds predefined thresholds. This closed-loop feedback mechanism ensures reliable temperature control while maintaining braking effectiveness when needed
Solution Approach 2:
The brake pressure parameter is changed dynamically based on temperature conditions. When the brake operates in the first active state and temperature exceeds thresholds, the control arrangement reduces the brake pressure parameter. This parameter adjustment prevents overheating while allowing full braking capability when temperature is acceptable
3Reliability
If a temperature sensor and control arrangement are added to monitor and reduce brake pressure, then the brake is protected from overheating, but the device complexity increases
Solution Approach 1:
The control arrangement is designed to be universal and multi-functional. It can operate the brake in two different active states depending on temperature conditions and operational requirements. The same control system handles both temperature-monitored retarder braking and conventional service braking, eliminating the need for separate control systems and reducing overall complexity
Solution Approach 2:
The brake system is equipped with self-service capabilities through the temperature sensor and control arrangement that automatically monitor and adjust brake pressure without external intervention. The system self-regulates by reducing pressure in the first active state when temperature thresholds are exceeded, providing automatic protection while maintaining simplicity through autonomous operation
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
The solution effectively protects the brake from thermal overload, ensuring it operates within safe temperature limits, maintaining braking effectiveness and safety by reducing brake pressure when overheating is detected and allowing for maximum braking torque in the second active state.
Implementation Method 1
a sensor (5) for measuring the temperature of the coolant (3) of the brake (4)
Implementation Method 2
a brake (4) which is cooled by a coolant (3)
Data Source
AI summary
A protection device for a brake which is cooled by a coolant in a vehicle, the brake having a first active state in which a brake pressure is established in the brake for braking of the vehicle. The device comprises a sensor for measuring the temperature of the coolant of the brake, and a control arrangement interacting with the temperature sensor and the brake in order to reduce or remove the brake pressure of the brake in the first active state in the event of a temperature of the coolant in excess of a predefined value.