Wet Multi-Disc Clutch Flow Path for Cooling and Wear Control
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Solution Overview
Problem
Existing clutch devices experience increased wear and reduced lifespan due to higher temperatures in the multiple disc pack, which affects the efficiency and reliability of power transmission.
Innovation Solution
The clutch device incorporates a wet-running multiple disc clutch with a second power transmission element featuring an annular-disc-shaped application section that protrudes inward in the radial direction over the operating fingers, preventing liquid from flowing axially and enhancing cooling and lubrication within the multiple disc pack.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If the liquid flows outward in the radial direction between the application section and the multiple disc pack, then the liquid can escape axially through the recesses in the wall, but the cooling and lubrication effect in the multiple disc pack is reduced
Solution Approach 1:
The application section is designed to protrude inward in the radial direction over the operating fingers, inverting the expected flow path. Instead of liquid flowing freely outward and axially, the protruding application section redirects the liquid flow to maintain it within the multiple disc pack, thereby improving cooling and lubrication effectiveness
Solution Approach 2:
The application section acts as an intermediary structure between the liquid flow and the multiple disc pack. By protruding inward over the operating fingers, it mediates the liquid flow path, preventing direct axial escape through the wall recesses and ensuring the liquid remains in contact with the multiple disc pack for effective cooling and lubrication
2Reliability
If the application section extends inward in the radial direction over the operating fingers, then cooling and lubrication is enhanced, but the structural complexity increases
Solution Approach 1:
The application section and the operating fingers are merged into a single integrated power transmission element. The application section protrudes inward over the operating fingers, combining the cooling/lubrication function with the power transmission function in one component, thereby enhancing reliability without proportionally increasing complexity
Solution Approach 2:
The power transmission element with the protruding application section serves multiple functions: it transmits operating power to the multiple disc pack through the operating fingers and simultaneously enhances cooling and lubrication by redirecting liquid flow. This multi-functionality improves reliability while minimizing additional structural complexity
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 design effectively reduces temperature-dependent wear by ensuring better cooling and lubrication of the multiple disc pack, leading to an increased lifespan and improved performance of the clutch device.
Implementation Method 1
a wet-running multiple disc clutch which is cooled and lubricated by means of a liquid
Implementation Method 2
a wet-running multiple disc clutch which is cooled and lubricated by means of a liquid
Data Source
AI summary
A clutch device includes a wet-running multiple disc clutch that has a first multiple disc carrier, a second multiple disc carrier, and a multiple disc pack assigned to the first and second multiple disc carrier. The clutch device further includes a first power transmission element on a first axial side of a wall facing away from the multiple disc pack, and a second power transmission element on a second axial side of the wall facing the multiple disc pack for applying an operating power to the multiple disc pack. The second power transmission element has an application section and operating fingers that extend through recesses in the wall to interact with the first power transmission element on the first axial side. The application section protrudes inward in the radial direction over the operating fingers.