Torque Converter Vibration Damper Axial Absorber Layout
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Solution Overview
Problem
Hydrodynamic torque converters require a significant constructed space to effectively damp torsional vibrations, which is a challenge in compact drive systems like those in motor vehicles.
Innovation Solution
The design incorporates a torsional vibration damper with energy storage elements arranged on a common radius, a vibration absorber like a centrifugal pendulum adjacent to the damper, and a turbine wheel connected to the damper stages to reduce radial expansion while maintaining effective damping, allowing for reduced space usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If energy storage elements are arranged on a common radius with traditional radial layout, then torsional vibration damping is effective, but the radial expansion increases the constructed space
Solution Approach 1:
The patent repositions the vibration absorber from a radial arrangement to an axial arrangement adjacent to the torsional vibration damper. This dimensional change allows the vibration absorber to function effectively without increasing radial expansion, thereby reducing the constructed space while maintaining vibration damping performance.
2Reliability
If a vibration absorber is added to improve torsional vibration damping, then damping performance increases, but the device complexity and space requirements increase
Solution Approach 1:
The patent combines the vibration absorber with the torsional vibration damper by positioning the vibration absorber adjacently to the damper stages. The vibration absorber is operatively connected to the intermediate damper component, creating an integrated assembly that achieves enhanced damping without requiring separate, space-consuming components.
Solution Approach 2:
The intermediate damper component serves multiple functions: it connects the damper stages in series and simultaneously provides an operative connection point for the vibration absorber. This multi-functionality reduces the need for additional structural elements, thereby limiting device 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 configuration achieves efficient torsional vibration damping with reduced space requirements, improving vibration isolation and reducing the overall size of the hydrodynamic torque converter.
Implementation Method 1
The vibration absorber is advantageously designed to operate by adapting to the rotation speed of the shaft, particularly as a centrifugal pendulum
Implementation Method 2
The vibration absorber is advantageously designed to operate by adapting to the rotation speed of the shaft, particularly as a centrifugal pendulum
Implementation Method 3
The energy storage elements of the two damper stages are arranged on a common radius, making it possible to achieve a good damping of the torsional vibrations
Implementation Method 4
The energy storage element can be designed as a spring-loaded element of any shape, and particularly, as a coil spring, and by way of example as a bow spring or as a compression spring
Data Source
AI summary
A hydrodynamic torque converter having a pump wheel accommodated in a housing, a turbine wheel, which can be driven by the pump wheel, and a torsional vibration damper, where the torsional vibration damper has a damper input drive component and a damper output drive component, which can rotate to a limited degree with respect to the damper input drive component to oppose the action of at least two damper stages which are operatively connected in series and which each have at least one energy storage element, where the torsional vibration damper also has an intermediate damper component, which is arranged operatively between the damper stages and which directly or indirectly accommodates a vibration absorber, where the energy storage elements of the damper stages are substantially arranged on a common radius, where the vibration absorber is arranged adjacent to the torsional vibration damper in the axial dimension.