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torsional shock absorber

A technology of torsional shock absorber and accumulator, applied in the direction of spring/shock absorber, vibration suppression adjustment, engine components, etc., to achieve the effect of improving assembly and eliminating vibration performance

Active Publication Date: 2022-05-17
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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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

A torsional vibration damper for motor vehicles in the form of a dual-mass flywheel, wherein the dual-mass flywheel has a motor shaft (15) connected in a non-rotatable manner to a drive motor (1) and rotates together with the motor shaft primary mass (6), at least one accumulator element and a secondary mass (8) rotatably driven by the primary mass (6) via the accumulator element, wherein the primary mass is introduced via the motor shaft (15) The torque in (6) is guided via the output shaft (10) of the secondary mass (8) to at least one other element of the drive train of the motor vehicle arranged in the housing, the primary mass (6) being designed rotationally symmetrical a hollow body which is open at least on one side and surrounds the secondary mass (8) concentrically with respect to its axis of rotation (7), the open side of which is passed through by the output shaft (10) of the secondary mass (8), and The driven shaft (10) of the secondary mass (8) is rotatably mounted in the housing. It is proposed that the hollow body forming the primary mass ( 6 ) is arranged rotatably on the housing by means of a sealing arrangement ( 28 ) in a liquid- and / or dust-tight manner with the open side of the hollow body.

Description

technical field [0001] The subject of the invention is a torsional vibration damper for a motor vehicle. 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 (transmission side), which are rotatably connected...

Claims

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Application Information

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