Centralized Brake and Tire Cooling With ECU Feedback Control
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Solution Overview
Problem
Existing cooling systems for vehicle brakes, tires, and bearings do not effectively utilize factors such as braking force, vehicle speed, and air flow to manage temperature, leading to excessive heat buildup that damages tires and brakes, reducing their lifespan and increasing maintenance costs.
Innovation Solution
A centralized cooling system controlled by a Central ECU Module that uses brushless fans, thermodynamic principles, and data from various vehicle sensors (such as TPMS, CAN BUS, and accelerometers) to intelligently manage cooling, even when the vehicle is stopped or turned off, and adapt to changing driving conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If conventional cooling systems are used without considering braking force, vehicle speed, and air flow data, then the system structure remains simple, but temperature management becomes ineffective leading to excessive heat buildup
Solution Approach 1:
The system incorporates sensors that continuously monitor braking force, vehicle speed, and air flow conditions, feeding this data back to the ECU which adjusts cooling fan operation accordingly. This closed-loop feedback mechanism enables effective temperature management based on real-time operating conditions while maintaining reasonable system complexity through electronic control.
Solution Approach 2:
The cooling system automatically adjusts its operation based on data from vehicle sensors without requiring manual intervention. The ECU processes information from braking systems, speed sensors, and air flow measurements to autonomously control fan speed and activation, allowing the system to self-regulate temperature management according to actual vehicle operating conditions.
2Reliability
If cooling systems operate only when the vehicle is moving with natural air flow, then energy consumption is reduced, but temperature control becomes insufficient during stopped vehicles or low-speed conditions
Solution Approach 1:
The cooling system dynamically adjusts its operation mode based on vehicle speed and cooling demand. At higher speeds, the system relies more on natural air flow to reduce energy consumption. At lower speeds or when stopped, the system activates the electric cooling fan to maintain adequate temperature control. This dynamic adaptation ensures reliable temperature management across all operating conditions while optimizing energy usage.
Solution Approach 2:
The system changes operational parameters including fan speed, activation timing, and cooling intensity based on real-time conditions such as vehicle speed, brake temperature, and ambient air flow. The ECU modifies these parameters dynamically to maintain effective cooling during stopped vehicles or low-speed conditions while minimizing energy consumption during high-speed operation where natural convection is sufficient.
3Force
If brakes operate at high temperatures between 180°C and 850°C, then braking force is maintained, but component lifespan decreases and safety is compromised due to temperature fading
Solution Approach 1:
The cooling system activates before brake temperature reaches critical levels that would cause fading or damage. By continuously monitoring brake temperature and predicting thermal trends based on braking force and duration data, the system initiates cooling action in advance to prevent temperature excursions that would compromise braking force or component lifespan.
Solution Approach 2:
The cooling system provides continuous temperature management during extended braking operations such as downhill driving or repeated braking cycles. Rather than operating intermittently, the system maintains continuous cooling action when thermal load exceeds dissipation capacity, ensuring brake temperature remains within the optimal range for maintaining braking force and preventing temperature fading throughout the duration of heavy use.
4Speed
If tires operate at high temperatures from 80°C to 120°C, then vehicle speed can be maintained, but tire lifespan decreases with 1% to 10% reduced kilometer yield
Solution Approach 1:
The system monitors tire temperature through sensors and feeds this information back to the ECU, which adjusts cooling fan operation to maintain tire temperature below the 80°C threshold. This feedback control enables the system to manage tire thermal load during high-speed operation, preserving tire lifespan by preventing excessive heat buildup while maintaining the vehicle speed necessary for transportation efficiency.
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 system effectively reduces tire and brake temperatures, extending their lifespan, improving safety by maintaining brake performance, and reducing maintenance and replacement costs by optimizing cooling based on real-time data.
Implementation Method 1
The fan moves air to cool the brake components, wheels, tires, and bearings by convection
Implementation Method 2
Braking generates heat to the brakes, which in turn conduct the heat to other parts of the axle, such as the axle's end tip, drum, disc, brake pad, brake shoe, brake hub, bearing, wheel(s) and tire(s). This occurs through the three thermodynamic processes of heat release: radiation, conduction, and convection.
Implementation Method 3
Braking generates heat to the brakes, which in turn conduct the heat to other parts of the axle, such as the axle's end tip, drum, disc, brake pad, brake shoe, brake hub, bearing, wheel(s) and tire(s). This occurs through the three thermodynamic processes of heat release: radiation, conduction, and convection.
Implementation Method 4
The heat generated by the friction of the brake pads to the discs or from the brake shoes to the drums (which can vary from 200° C. to 800° C.) is transferred to the sockets, sleeves, wheel hubs, bearings and to the wheels themselves, which in turn transfer this heat to the tires, either by thermal conduction through the bead; by convection of hot air, which passes through the drum or disc; by radiation from the contact track; friction of the disc/pad or drum/shoe assembly, directly to the tires and bearings.
Data Source
AI summary
The invention comprises a centralized cooling system for motorized vehicle's brakes, wheels, tires, and bearings, controlled by a Central ECU Module. The system uses one or more fans, preferably brushless, intelligently managed by the Central ECU Module, fixed to the chassis or unibody of the vehicle and connected to forced air outlet ducts, so that the air is channeled directly to the wheel hubs of the vehicle's axles. The system uses, individually or together, through the collection and processing of data by the Central ECU Module, several technical information collected by the vehicle's peripherals, so that it manages the use of the brake cooling system fans intelligently, in relation to the potency applied, the duration the fan is on when the vehicle is turned on and the duration the fan is on when the vehicle is turned off.