Radial Damper Unit with Speed-Adaptive Absorber
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Solution Overview
Problem
Existing damper units in drivetrains face challenges in effectively absorbing torsional vibrations over a wide speed range, as the absorption effect is limited to specific speeds due to the constant intrinsic frequency of absorbers, which can lead to irregular rotations and require additional components that increase installation space and complexity.
Innovation Solution
A damper unit design featuring at least two series-connected dampers offset in the radial direction, coupled by spring units, and a speed-adaptive absorber positioned between them, where the absorber's intrinsic frequency is proportional to engine speed, allowing for universal absorption across the entire speed range without transmitting torque, thus reducing installation space and simplifying installation by integrating the absorber within the damper components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a conventional absorber with constant intrinsic frequency is used, then the absorption effect occurs at certain speeds, but the absorption is limited to specific speeds and cannot cover the entire speed range
Solution Approach 1:
The patent applies the dynamics principle by making the absorber's intrinsic frequency variable rather than constant. The absorber is designed to adapt its frequency characteristics to match the varying excitation frequencies across the entire speed range, allowing continuous effective vibration absorption regardless of operating speed.
Solution Approach 2:
The patent implements parameter changes by modifying the intrinsic frequency parameter of the absorber. Instead of maintaining a fixed frequency, the absorber's frequency parameter is designed to change dynamically with operating conditions, enabling it to remain effective across varying speeds where conventional fixed-frequency absorbers fail.
2Reliability
If additional absorber components are added to the damper unit, then vibration absorption capability is improved, but installation space and device complexity increase
Solution Approach 1:
The patent applies the merging principle by integrating the absorber functionality directly into the damper unit structure. Rather than adding separate absorber components, the design combines the absorber and damper into a unified system where the absorber is incorporated within the existing damper components, reducing overall complexity while maintaining vibration absorption capability.
Solution Approach 2:
The patent implements universality by designing components that serve multiple functions. The damper unit is configured to simultaneously provide both damping and vibration absorption functions through its integrated structure, eliminating the need for separate dedicated absorber components and reducing overall device complexity.
3Area of stationary object
If the absorber is integrated within the damper components, then installation space is reduced and installation is simplified, but the absorber must be positioned between the spring units of the two dampers
Solution Approach 1:
The patent applies the nested doll principle by placing the absorber within the structural boundaries of the damper unit. The absorber is positioned in the radial gap between the spring units of the two dampers, effectively nesting it within the existing component arrangement and utilizing otherwise wasted space, thereby reducing overall installation footprint.
Solution Approach 2:
The patent implements dimensionality change by utilizing the radial dimension for absorber placement rather than adding axial length. By positioning the absorber in the radial direction between spring units, the design absorbs vibrations without increasing the axial installation space, effectively using a different spatial dimension to accommodate the additional functionality.
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 or eliminates rotational irregularities in drivetrains by integrating a speed-adaptive absorber within the damper unit, optimizing installation space, and enhancing damping characteristics across the entire speed range without additional components, making it suitable for force-transmitting devices with shiftable clutch devices.
Implementation Method 1
coupled together by spring units
Implementation Method 2
Absorbers function according to the principle of a centrifugal pendulum-type absorber in a centrifugal force field
Implementation Method 3
means for transmitting torque and coupling damping
Data Source
AI summary
A damper unit having at least two series-connected damper units arranged offset from each other in a radial direction, each including two damper parts that are coupled to each other by means of spring units and a speed-adaptive absorber which is at least indirectly coupled to the connection between the two dampers, wherein the speed-adaptive absorber is arranged between the spring units of both dampers in a radial direction.