Torque Transfer Device Centrifugal Pendulum Axial Coupling
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Solution Overview
Problem
Existing torque transfer devices face challenges in achieving a compact axial design while efficiently utilizing radial space for effective damping of torsional vibrations and maintaining energy efficiency.
Innovation Solution
The torque transfer device is designed with a centrifugal force pendulum and a hydrodynamic converter, featuring a pendulum flange with pendulum masses connected via a sliding block guide, a first coupling device for torque transfer between the pendulum flange and converter wheel, and a second coupling device for torque exchange between the damper device and pendulum flange, along with a lockup clutch to manage rotational speed inequalities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the pendulum masses extend radially all the way outside on the pendulum flange, then the damping effect of the centrifugal force pendulum is greatly improved, but the axial space requirement increases
Solution Approach 1:
The patent repositions the torque transfer function from the radial dimension to the axial dimension by placing the first coupling device axially adjacent to the pendulum mass rather than radially outward. This allows the pendulum mass to extend radially for optimal damping while the coupling occurs in the axial direction, resolving the space conflict.
Solution Approach 2:
The pendulum flange serves multiple functions: it provides the structural support for the pendulum mass to achieve damping, and simultaneously serves as a mounting surface for the first coupling device to transfer torque. This multi-functionality eliminates the need for separate components in different spatial directions.
2Power
If the first coupling device is positioned radially outside the pendulum mass, then torque transfer between the pendulum flange and converter wheel is achieved, but the radial space utilization is inefficient
Solution Approach 1:
The patent moves the first coupling device from the radial dimension to the axial dimension, positioning it axially adjacent to the pendulum mass. This dimensional shift allows efficient use of radial space for the pendulum mass while achieving torque transfer through axial positioning of the coupling device.
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 allows for a compact axial structure, efficient radial space utilization, effective damping of torsional vibrations, and enhanced energy efficiency by ensuring good torque flow and reduced construction elements, resulting in a cost-effective and efficient torque transfer solution.
Implementation Method 1
Torque transfer devices having a centrifugal force pendulum are known, where the centrifugal force pendulum has a pendulum flange and at least one pendulum mass. The pendulum is connected radially on the inner side to a component of the torque transfer device, in order to damp torsional vibrations of a drive torque
Implementation Method 2
The torque transfer device has a converter wheel of a hydrodynamic converter, while the converter includes an impeller. The impeller is positioned axially opposite the turbine wheel. The impeller is torsionally coupled with the input side, while the turbine wheel is connected non-rotatingly to the centrifugal force pendulum
Data Source
AI summary
A torque transfer device mountable rotatably around an axis of rotation to transfer a drive torque between an input side and an output side, having a converter wheel of a hydrodynamic converter and a centrifugal force pendulum, which has a pendulum flange extending in an at least partially radial direction and at least one pendulum mass, where the pendulum mass is positioned on a long side of the pendulum flange and is coupled with the pendulum flange by means of a sliding block guide. A first coupling device is designed to provide a connection for transferring torque between the pendulum flange and the converter wheel, where the first coupling device is connected to the pendulum flange at least partially radially to the outside of the pendulum mass to provide an exchange of torque between the converter wheel and the pendulum flange radially to the outside of the pendulum mass.