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Torsional vibration damper

A technology for torsional shock absorbers, accumulators, applied in spring/shock absorber, vibration damping adjustment, engine components, etc.

Active Publication Date: 2021-02-26
AUDI AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this sliding contact between the primary mass and the secondary mass leads to an undesired influence on the vibration behavior of the torsional vibration damper

Method used

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  • Torsional vibration damper
  • Torsional vibration damper
  • Torsional vibration damper

Examples

Experimental program
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Effect test

Embodiment Construction

[0025] figure 1 A drive train (not shown) of a motor vehicle is shown in a simplified partial view, consisting of a drive motor 1 (partial view) and a transmission 2 (partial view). The transmission 2 is shown in section and consists on the housing side of the (actual) transmission housing 3 and a bell-shaped attachment 4 , which is usually referred to as the transmission bell. The bell-shaped appendage 4 of the transmission bell housing 3 is fastened fixedly to the drive motor by means of corresponding screw connections 35 . The transmission 2 can be both a conventional shift transmission and an automatically engaged dual-clutch transmission. The illustration of the clutches and transmission stages arranged in the transmission housing 3 is omitted, since this is not relevant in the context considered here. In the bell-shaped attachment 4 , a torsional vibration damper 5 , shown in section along the axis of rotation 7 of the attachment, is arranged between the drive motor 1 ...

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Abstract

The invention relates to a torsional vibration damper in the form of a dual mass flywheel for a motor vehicle, the dual mass flywheel comprising: a primary mass (6), which is connected to the motor shaft (15) of a drive motor (1) for conjoint rotation and revolves with said motor shaft; at least one energy storage element; and a secondary mass (8), which is driven by the primary mass (6) with torsional softness via the energy storage element, wherein: the torque fed into the primary mass (6) via the motor shaft (15) is output to at least one further element of the drive train of the motor vehicle via an output shaft (10) of the secondary mass (8), said at least one further element being arranged in a housing; the primary mass (6) is designed as a rotationally symmetrical hollow body whichis open at least on one side concentrically to the axis of rotation (7) of the primary mass and which surrounds the secondary mass (8); the output shaft (10) of the secondary mass (8) reaches throughthe open side of the hollow body; and the output shaft (10) of the secondary mass (8) is rotatably mounted in the housing. According to the invention, the open side of the hollow body forming the primary mass (6) is rotatably arranged liquid- and / or dust-tight against the housing by means of a sealing assembly (28).

Description

technical field [0001] The subject of the invention is a torsional vibration damper for a motor vehicle according to the preamble of claim 1 . Background technique [0002] In motor vehicles with internal combustion engines, in particular four-stroke reciprocating piston engines, the periodically occurring four strokes lead to rotational inhomogeneities in conjunction with the firing sequence on the engine shaft. Since the powertrain is a rotationally vibrating system, rotational non-uniformity excites the system to vibrate, especially past resonance-critical speeds, which causes the transmission to rattle and, through the powertrain, to the body, causing unpleasant sounds effect. To reduce rotational inhomogeneities, torsional vibration dampers with a dual-mass flywheel are commonly used today, as is known, for example, from DE 4117582 A1. Dual-mass flywheels of the type described generally have a primary seismic mass (motor side) and a secondary seismic mass (transmissio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16F15/134
CPCF16F15/134F16C2361/55F16F15/13171F16F15/165
Inventor M·布克
Owner AUDI AG
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