Radiating Brake Pad Spacer for Heat and Pedal Feel Stability
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Worn brake pads cause brake caliper pistons to extend, leading to increased brake fluid compressibility and a 'spongey' pedal feel due to the caliper pistons extending out of the caliper, which results in more brake fluid being drawn into the hydraulic circuit, affecting braking performance and pedal travel.
Innovation Solution
A radiating spacer for brake pads with a plate body featuring cooling grooves on the backing plate side and a planar caliper piston contact area on the caliper side, made from a material with lower thermal conductivity than the backing plate, such as titanium or stainless steel, to improve thermal management and structural rigidity, reducing the need for piston extension and maintaining consistent braking performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of substance
If brake pads wear down over time, then the friction material thickness reduces, but the caliper piston extends further out increasing hydraulic circuit compressibility
Solution Approach 1:
A radiating spacer is introduced as an intermediary component between the caliper piston and the brake pad backing plate. This spacer maintains the required thickness to prevent piston over-extension while allowing heat radiation, thus mediating between the wearing friction material and the piston to maintain hydraulic circuit stability and consistent pedal feel.
Solution Approach 2:
The invention changes the thermal parameters of the brake pad assembly by incorporating a radiating spacer with specific thermal radiation properties. This alters the heat dissipation mechanism to manage caliper temperature and reduce thermal expansion effects, thereby maintaining more stable piston position and hydraulic circuit compressibility despite friction material wear.
2Force
If caliper pistons extend out further to maintain clamping force, then braking force is maintained, but more brake fluid is drawn into the hydraulic circuit increasing compressibility
Solution Approach 1:
The radiating spacer acts as a mediator that maintains the mechanical interface between piston and brake pad while preventing excessive piston extension. By preserving the correct thickness gap, it ensures that the piston does not extend beyond its designed travel limit, thus preventing additional brake fluid from being drawn into the hydraulic circuit while maintaining sufficient clamping force.
Solution Approach 2:
The radiating spacer provides a pre-established thermal and mechanical buffer that compensates for friction material wear before it affects piston extension. By being in place beforehand, it cushions against the adverse effects of wear, preventing the piston from extending excessively and drawing in additional compressible brake fluid.
3Power
If brake caliper temperature increases from heat generation, then braking power is maintained, but brake fluid compressibility increases due to thermal expansion
Solution Approach 1:
The invention modifies the thermal parameters of the brake system by introducing a radiating spacer with optimized thermal radiation characteristics. This changes the heat transfer dynamics, allowing the caliper to maintain operational temperature for braking power while simultaneously reducing excessive thermal expansion of the brake fluid through improved heat management and radiation dissipation.
Solution Approach 2:
The radiating spacer converts the harmful heat accumulation in the caliper into beneficial thermal radiation. By providing a surface that radiates heat away from the caliper piston area, it transforms the excess thermal energy that would otherwise increase fluid compressibility into a controlled heat dissipation mechanism that maintains braking power while protecting hydraulic circuit stability.
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 radiating spacer enhances thermal management and structural rigidity, reducing brake fluid compressibility, stabilizing the brake pedal feel, and maintaining superior braking performance even with worn brake pads by compensating for friction material loss and improving heat transfer within the braking system.
Implementation Method 1
The two major sources are radiative heat from the brake disc and conductive heat transfer from the brake pad backing plate to the caliper pistons
Implementation Method 2
The two major sources are radiative heat from the brake disc and conductive heat transfer from the brake pad backing plate to the caliper pistons
Implementation Method 3
The two major sources are radiative heat from the brake disc and conductive heat transfer from the brake pad backing plate to the caliper pistons
Data Source
AI summary
A radiating spacer includes a plate body having a backing plate facing side and a caliper facing side, with the backing plate facing side having a plurality of cooling grooves and the caliper facing side having a planar caliper piston contact area. The cooling grooves extend partially into the plate body to provide additional cooling of the brake pad and braking assembly. The planar caliper piston contact area is configured to provide a flat surface for contact with a caliper piston. In some embodiments, the radiating spacer and the backing plate are made from different metal materials having certain thermal conductivity coefficients to help promote advantageous heat distribution.