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Bow spring system for dual mass flywheels and dual mass flywheels

A bow spring system and dual-mass flywheel technology, applied in spring/shock absorber, vibration suppression adjustment, mechanical equipment, etc., can solve problems such as difficult three-stage direction, failure to achieve vibration reduction behavior, etc., to avoid free angle or Dead zone, simple torsional vibration, and improved spring stiffness

Inactive Publication Date: 2016-03-30
SCHAEFFLER TECH AG & CO KG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to manufacturing and installation tolerances, it is very difficult to achieve a three-stage course of the third spring characteristic curve 21 , so that even the last stage can be unintentionally omitted and the desired damping behavior is not achieved.

Method used

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  • Bow spring system for dual mass flywheels and dual mass flywheels
  • Bow spring system for dual mass flywheels and dual mass flywheels
  • Bow spring system for dual mass flywheels and dual mass flywheels

Examples

Experimental program
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Effect test

Embodiment Construction

[0025] exist Figure 4 The bow spring system 10 according to the invention shown in has a starting bow spring 22 designed as an outer spring, relative to which starting bow spring 22 is arranged radially inwardly coaxially to the starting bow spring 22 one after the other in series There is a first additional bow spring 24 and a second additional bow spring 24 . The first additional bow spring 24 can be suspended on the first end 28 . Correspondingly, the second additional bow spring 26 can be suspended on the second end 30 . The bow spring system 10 can be used as an energy storage element for a dual mass flywheel in order to damp torsional vibrations without large energy losses.

[0026] In the illustrated embodiment, the first additional bow spring 24 has a length L in the illustrated relaxed state 1 , which is longer than the length L of the second additional bow spring 26 2 longer so that the second additional bow spring 26 can be compressed earlier than the first add...

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PUM

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Abstract

The invention relates to a bow spring system for a dual-mass flywheel for damping torsional vibration, provided with a starting bow spring (22) for damping torsional vibration, a first additional bow spring (24) for damping torsional vibration arranged parallel to the starting bow spring and a second additional bow spring (26) for damping torsional vibration arranged parallel to the starting bow spring (22), wherein the second additional bow spring (26) is connected in series with the first additional bow spring, wherein the starting bow spring has a spring constant Ds that is less than the spring constant D of the first additional bow spring and less than the spring constant D2 of the second additional bow spring, wherein upon compression of the bow spring system over a total spring path Sges the second additional bow spring blocks before the first additional bow spring and before the starting bow spring.

Description

technical field [0001] The invention relates to a bow spring system for a dual-mass flywheel by means of which torsional vibrations, for example of a crankshaft of a motor vehicle engine, can be damped. Background technique [0002] Especially in the case of motor vehicle engines charged by means of a turbocharger, high torques can already be generated in the low speed range, for example 1000 U / min to 1500 U / min, which results in a strong increase in torque starting from idle speed. improve. This leads to increased demands on the dual-mass flywheel connected to the drive shaft of the motor-vehicle engine for damping the torsional vibrations caused by the engine combustion of the motor-vehicle engine. The spring system also dampens torsional vibrations over a sufficiently large range of rotational angles at high torques. [0003] exist figure 1 The bow spring system 10 shown in has an outer spring 12 and two identical inner springs 14 which can be compressed simultaneously...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16F15/123F16F15/134
CPCF16F15/13492F16F15/12373
Inventor C·巴尔曼J·莱戈T·格贝尔
Owner SCHAEFFLER TECH AG & CO KG
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