Disc Brake Particle Extractor With Pneumatic Dust Suction
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Solution Overview
Problem
Disc brakes in motor vehicles generate brake dust that pollutes the environment during braking, and existing solutions like air-ducting arrangements with filters are inadequate in effectively reducing this pollution.
Innovation Solution
A disc brake system with a casing surrounding the brake disc and a suction device using the Coanda or Venturi effect to extract brake dust, connected to a compressed air system for efficient particle removal, and an extraction system with centralized air filters or individual brake filters for commercial vehicles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a filter is arranged in the disc brake to absorb brake dust, then environmental pollution is reduced, but the device complexity increases
Solution Approach 1:
The suction device is integrated into the existing disc brake structure by mounting it on the casing that already surrounds the brake disc. The air gap between the casing and friction ring is utilized as the suction inlet, merging the particle extraction function with the existing structural elements rather than adding completely separate components.
Solution Approach 2:
A vacuum generator is used as the suction device, which operates based on pneumatic principles (Coanda effect or Venturi effect). This pneumatic approach replaces more complex mechanical filtration systems while effectively capturing brake dust particles through suction forces.
2Productivity
If a casing with suction connection is added to the disc brake, then particle extraction capability is improved, but the device complexity increases
Solution Approach 1:
The casing serves multiple functions: it surrounds the brake disc structurally, provides mounting support for the suction device, and creates the air gap that functions as the suction inlet. This multi-functionality reduces the need for additional separate components for particle extraction.
Solution Approach 2:
The air gap between the casing and friction ring automatically serves as the suction inlet for the vacuum generator. The system utilizes the existing spatial relationship between components rather than requiring separate inlet channels or additional openings, allowing the structure to serve its own extraction needs.
3Productivity
If an air-operated suction device is used, then particle removal efficiency is improved, but the use of energy increases
Solution Approach 1:
The vacuum generator utilizes pneumatic energy from the vehicle's existing compressed air system to create suction forces. This approach leverages an already-available energy source in the vehicle, avoiding the need for additional electrical motors or power consumption while maintaining effective particle removal 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 environmental pollution by capturing brake dust through enhanced suction devices, utilizing the Coanda or Venturi effect, and centralized or individual air filters, ensuring efficient and compact operation.
Implementation Method 1
the suction device is a vacuum generator, the mode of operation of which is based on a Coanda effect
Implementation Method 2
the suction device is a vacuum generator, the mode of operation of which is based on a Venturi effect
Implementation Method 3
the casing has a dust container, in which a filter, in particular an air filter, is arranged
Data Source
AI summary
A disc brake (1) for a motor vehicle has a brake disc and a brake caliper (4), in which two brake pads and a mechanism for actuating the brake pads are arranged, as well as a casing (12) that fits around the brake disc in some region or regions. The casing (12) has a suction connection (80) for a dust particle extractor. In one exemplary embodiment, an air-operated suction device (18) is secured on the suction connection of the casing (12). The suction device is connectable to a compressed air source of the vehicle. The compressed air may be used to generate a vacuum via the Coanda or Venturi effect, thereby causing an air mass to move away from the suction connection. A single suction device may be used for multiple disc brakes, with respective connecting lines extending to respective suction connections.