Segmented Friction Clutch Pressure Plate Heat Dissipation
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Solution Overview
Problem
Existing friction clutches require separate pressure plates for each torque transmission scenario, leading to variations in diameter and size, which complicates design and heat dissipation, especially in constrained spaces like small motor vehicles.
Innovation Solution
A modular pressure plate design featuring a holding element and multiple friction plate segments with varying cross-sections, allowing for adjustable dimensions and improved heat dissipation through gaps and cooling elements, enabling efficient heat transport and reduced size.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a separate pressure plate is designed for each torque transmission scenario, then the torque transmission requirement is met, but the device complexity and design variation increase
Solution Approach 1:
The pressure plate is segmented into a holding element and multiple replaceable friction plate segments. This allows the friction surface to be modified by simply replacing segments rather than redesigning the entire pressure plate, thus meeting different torque transmission requirements while reducing design complexity.
Solution Approach 2:
The holding element serves as a universal component that can accommodate different types and configurations of friction plate segments. This multi-functional design allows a single holding element to be used across multiple applications by simply changing the friction plate segments.
2Temperature
If the pressure plate size is increased to improve heat dissipation, then cooling is enhanced, but the installation space requirement increases
Solution Approach 1:
The friction surface is divided into multiple segments with gaps between them, creating channels for heat dissipation. This segmentation allows effective cooling without increasing the overall pressure plate size, as the gaps provide thermal pathways within the existing footprint.
Solution Approach 2:
The segmented friction plate structure creates a porous-like configuration with gaps between segments, allowing heat to escape through these openings. This approach improves heat dissipation efficiency without requiring a larger surface area.
3Power
If the friction surface area is increased to meet torque requirements, then the torque capacity is improved, but the heat dissipation capability worsens
Solution Approach 1:
The friction surface is segmented into multiple plates with intentional gaps between them. This segmentation maintains sufficient friction surface area for torque transmission while the gaps provide thermal pathways for heat dissipation, resolving the contradiction between torque capacity and heat dissipation.
Solution Approach 2:
The gaps between friction plate segments, which might seem to reduce the friction surface area, actually serve as beneficial heat dissipation channels. This converts what could be seen as a loss of friction area into a benefit for thermal management.
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 modular design allows for adaptable friction surfaces, enhanced heat dissipation, and reduced size, preventing clutch slipping due to improved cooling, particularly beneficial in small motor vehicles with limited space.
Implementation Method 1
the surfaces available for convective heat transport are significantly are increased
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
The pressure plate (1) for a friction clutch comprises a retaining element (2) and a plurality of friction plate segments (3) for forming a friction face (6), wherein the retaining element has a pressure side (4) and a counter side (5) opposite the pressure side, wherein the friction plate segments bear against the pressure side of the retaining element and are connected in a materially cohesive manner with the latter, at least in connection regions (14).