Powertrain Damping Gap Channel for Noise and Edge-Change Control
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Solution Overview
Problem
Existing damping devices for motor vehicle drive trains struggle to effectively dampen contact or edge changes while maintaining cost-effectiveness and simplicity, often requiring complex and costly processing for overflow channels.
Innovation Solution
A damping device with rotatable damping elements and volume-changing damping chambers connected via an overflow channel formed by a gap between the elements, allowing for direct fluid flow and adjustable gap width to optimize damping effect, potentially using elastically deformable materials for enhanced damping.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If traditional overflow channels are used in damping devices, then fluid flow between damping chambers is achieved, but manufacturing complexity and cost increase due to complex processing requirements
Solution Approach 1:
The overflow channel is merged with the gap between damping elements, eliminating the need for separate complex overflow channel structures. The gap itself serves as the fluid passage, simplifying manufacturing while maintaining damping functionality.
Solution Approach 2:
The traditional complex overflow channel structure is extracted and replaced by a simple gap between elements. This removes unnecessary complexity while preserving the essential fluid flow function between damping chambers.
2Adaptability or versatility
If fixed damping characteristics are used, then manufacturing is simpler, but adaptability to different operating conditions is reduced
Solution Approach 1:
The damping device transitions from fixed characteristics to dynamic adjustability. The gap width between damping elements can be varied to change damping characteristics, allowing adaptation to different operating conditions while maintaining relatively simple construction.
Solution Approach 2:
The damping characteristics are changed by varying the gap width parameter between damping elements. This allows continuous adjustment of damping behavior to match different operating requirements without fundamentally changing the device structure.
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 provides effective damping of contact or edge changes, reduces unwanted noise, and lowers costs by eliminating the need for complex overflow channel processing and allowing for adjustable damping based on operating conditions.
Implementation Method 1
A damping fluid is also provided, which, when the volume of one of the damping chambers decreases, flows from one damping chamber to the other via the overflow channel
Implementation Method 2
potentially using elastically deformable materials for enhanced damping
Data Source
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Figure 5
AI summary
The invention relates to a damping device (10) for a powertrain of a motor vehicle, comprising a first damping element (14) which can be rotated about a rotational axis (12), a second damping element (16) which can be driven by the first damping element (14) and is thereby rotated about the rotational axis (12), at least two damping chambers (18a, b), the volume of which can be changed by a relative rotation between the damping elements (14, 16), at least one overflow channel, via which the damping chambers (18a, b) are fluidically connected together, and a damping fluid (32) which flows from one damping chamber (18a) to the other damping chamber (18b) when the volume of of the first of the damping chambers (18a, b) decreases, wherein the overflow channel which opens at both ends into the respective damping chambers (18a, b) is formed by a gap (S) between the damping elements (14, 16) at least in a longitudinal region, said gap being directly delimited by the damping elements (14, 16).