Noise ring

The noise reduction ring addresses whistling and pumping noises in turbochargers by guiding airflow with ribs or embossings, enhancing performance and reducing costs through improved noise damping and airflow management.

DE102024135348A1Pending Publication Date: 2026-06-03DAIMLER TRUCK AG
View PDF 1 Cites 0 Cited by

Patent Information

Application Number
DE102024135348
Authority / Receiving Office
DE · DE
Patent Type
Applications
Current Assignee / Owner
Filing Date
2024-11-29
Publication Date
2026-06-03

AI Technical Summary

Technical Problem

Whistling and pumping noises occur in the compressor housing of a turbocharger due to airflow interactions, and existing noise rings made of sheet metal or aluminum primarily reflect noise rather than dampen it, leading to ineffective noise reduction.

Method used

A noise reduction ring with a lip inclined towards the compressor housing, featuring ribs or embossings, is used in the inlet and KSM channel to guide airflow and incorporate clips for fixation, altering airflow and structure-borne sound to reduce noise.

Benefits of technology

The noise reduction ring effectively dampens noise, enhances turbocharger performance, and reduces costs by modifying airflow and structure-borne sound, influencing the surge and choke limits.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure 00000000_0001_ABST
    Figure 00000000_0001_ABST
  • Figure 00000000_0000_ABST
    Figure 00000000_0000_ABST
Patent Text Reader

Abstract

The invention relates to a noise-reducing ring (1) for use in the area of ​​an inlet (13) and a KSM channel (12) of a compressor housing (7) of a turbocharger, wherein the noise-reducing ring (1) has a lip (3) which is inclined towards the compressor housing (7) in order to direct a main airflow past the KSM channel (12) into the inlet (13) of the compressor housing (7), such that a passage for a secondary airflow remains between the KSM channel (12) and the inlet (13), wherein the noise-reducing ring (1) has an outer ring (2) to which the lip (3) is attached inwards, wherein a side of the lip (3) facing the compressor housing (7) has ribs (10), or wherein a plurality of embossings (11) are introduced from a side of the lip (3) which, in use, points away from the compressor housing (7).
Need to check novelty before this filing date? Find Prior Art

Citation Information

Patent Citations

  • Noise reflector for a compressor of a turbomachine

    DE102013021191A1