Dual Mass Flywheel Support Disc Nesting for Compact Torsional Damping
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Solution Overview
Problem
Existing torsional vibration dampers are not compact enough, leading to increased space requirements and oscillation angles during the starting phase of internal combustion engines, which affects starting behavior.
Innovation Solution
A dual-mass flywheel with an input part and an output part connected by a spring-damper device and a friction device featuring a friction ring and support disk, where the support disk has radially inward extensions for connection to the input part, and a roller bearing for rotatable mounting, reducing space requirements and improving compactness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If existing torsional vibration damper designs are used, then the basic damping function is achieved, but the installation space is too large and the oscillation angle during starting phase is excessive
Solution Approach 1:
The support disc is integrated into the input part structure, with radially inward extensions that connect directly to the first flange part. This nesting approach allows the support disc to occupy space within the existing structural envelope rather than adding external volume, thereby reducing overall installation space while maintaining the damping function and controlling oscillation angles during starting phase
Solution Approach 2:
The support disc is merged with the input part by connecting its radially inward extensions to the first flange part. This combination creates a unified structural element that performs both support and connection functions simultaneously, reducing the number of separate components and minimizing the required installation space while improving starting behavior through better structural integration
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 solution results in a compact, lightweight design that reduces oscillation angles and improves starting behavior by effectively damping torsional vibrations between the internal combustion engine and the friction clutch.
Implementation Method 1
a spring-damper device acting between the input part and the output part, comprising at least one energy storage device
Implementation Method 2
a friction device with a friction ring and a support disc connected to the first flange part
Data Source
Figure 1
Figure 2
AI summary
The invention relates to a torsional vibration damper, in particular a dual mass flywheel (100), comprising an input part with a first flange part (106) and an output part with a second flange part (120), the input part and the output part having a common axis of rotation about which said parts can rotate together and can rotate relative to one another in a limited manner. The damper also has a spring absorber device that is active between the input part and the output part, said device comprising an energy accumulator (124) and a friction device (130) that has a friction ring (130) and a support disk (136) which is connected to the first flange part, said support disk comprises radially inward directed projections (148) in order to improve the structure and/or functionally of the torsional vibration damper.