Brake Particle Suction Control Using Preemptive Negative Pressure
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Solution Overview
Problem
Friction braking systems face inefficiencies in capturing braking particles due to the time required to establish negative pressure, leading to suboptimal capture rates and increased electrical consumption and noise from continuous turbine operation.
Innovation Solution
A suction system for friction braking systems in hybrid or electric vehicles that preemptively initializes negative pressure using information from the vehicle's braking system, particularly electromagnetic braking, to ensure sufficient negative pressure is established before the friction braking phase begins, optimizing particle capture.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the suction turbine is activated only when friction braking is activated, then electrical consumption and noise are reduced, but the capture rate of braking particles is not optimal at the beginning of braking
Solution Approach 1:
The suction turbine is activated preemptively based on information from the electromagnetic braking control computer, before the actual friction braking begins. This preliminary action ensures that negative pressure is already established in the pneumatic circuit when friction braking starts, optimizing particle capture from the very beginning of the braking phase.
Solution Approach 2:
The control unit receives information from the electromagnetic braking control computer about the upcoming braking phase. This feedback mechanism allows the suction system to anticipate and prepare for friction braking, activating the turbine at the optimal moment to ensure immediate particle capture effectiveness.
2Productivity
If the suction turbine is activated at the moment friction braking begins, then electrical consumption is reduced, but the negative pressure establishment time causes suboptimal particle capture
Solution Approach 1:
The system uses information from the electromagnetic braking control computer to activate the suction turbine before friction braking actually begins. This preliminary activation allows the negative pressure to be established in advance, eliminating the time delay that would otherwise occur between braking initiation and effective particle capture.
Solution Approach 2:
By activating the suction turbine preemptively, the system counteracts the potential loss of particle capture effectiveness that would occur during the negative pressure establishment period. The preliminary anti-action ensures that particles are captured efficiently from the very start of friction braking.
3Productivity
If the suction turbine operates continuously, then particle capture is optimized, but electrical consumption and noise increase significantly
Solution Approach 1:
The suction turbine operates dynamically based on actual braking needs rather than continuously. The control unit adjusts the turbine operation timing based on information from the electromagnetic braking control computer, activating it only when needed for particle capture while keeping it inactive during non-braking periods to minimize noise and electrical consumption.
Solution Approach 2:
The suction turbine operates periodically based on braking events rather than continuously. Each braking phase triggers a corresponding activation period of the turbine, creating a periodic operation pattern that maintains particle capture effectiveness while significantly reducing overall electrical consumption and noise compared to continuous 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
This approach enhances the capture performance of braking particles at the onset of friction braking, reduces electrical consumption, and minimizes noise by initiating the suction process before friction braking, ensuring efficient particle collection and energy recovery.
Implementation Method 1
at least one negative-pressure source (for example a turbine or other means), at least one suction mouth connected by a pneumatic circuit to the negative-pressure source
Data Source
AI summary
System for suctioning braking particles from a friction braking system of a vehicle, the suction system including a negative-pressure source, a suction mouth, a filter, a conduit connecting the suction mouth to the negative-pressure source, a control unit configured to control the negative-pressure source, the suction system further including a stream of information originating from a computer that controls a motor-generator of a driving/braking system of the vehicle, the control unit being configured to control the negative-pressure source preemptively before the actual activation of the friction braking, the control unit controlling the negative-pressure source as a function of the activation of electromagnetic braking or other parameters, and associated method.