Unlock instant, AI-driven research and patent intelligence for your innovation.

Acoustic attenuation device for intake line

An attenuation device and sound technology, applied in the direction of intake mufflers, sound-generating devices, charging systems, etc., can solve the problems of increasing the pressure loss of intake pipes, unfavorable fuel consumption, and large volume of acoustic devices, and achieve the goal of reducing pressure loss Effect

Inactive Publication Date: 2018-06-08
NOVARES FRANCE
View PDF7 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, these acoustic devices may require a large volume, while the space available in the engine location of the vehicle is very small
In addition, the aggregation of multiple acoustic devices increases the pressure loss in the intake duct, which is detrimental to the performance of the vehicle and may be detrimental to fuel consumption

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Acoustic attenuation device for intake line
  • Acoustic attenuation device for intake line
  • Acoustic attenuation device for intake line

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0027] The present invention relates to a damping device 1 for the intake line of an internal combustion engine equipped with a turbo compressor (not shown in the drawings).

[0028] Attenuation device 1 in figure 1 with figure 2 Shown in.

[0029] The attenuation device 1 may be made of polymer or metallic material, for example.

[0030] The attenuation device 1 includes an air intake duct 2 of the heat engine.

[0031] According to the embodiment presented here, the pipe 2 has a substantially cylindrical geometry.

[0032] The pipe 2 has an inner wall 21 with a diameter d2.

[0033] As in figure 2 As specifically shown in, according to the embodiment presented here, the pipe 2 has two annular cavities 3.

[0034] Each annular cavity 3 is defined by a diameter d3 on the outside with respect to the diameter d2 of the pipe 2.

[0035] Each annular cavity 3 is closed by a wall 5 comprising a porous material. The wall 5 is located on the extension of the peripheral wall 21 of the pipe 2 and...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to an acoustic attenuation device (1) for a turbocharger, or for a supercharger, arranged along an air intake line of a vehicle. The attenuation device (1) comprises a gas supplypipe (2) having a peripheral wall (21) and a diameter (d2), the pipe (2) comprising at least one annular chamber (3) defined by a diameter (d3) greater than the diameter (d2) of the pipe (2), the oreach annular chamber (3) being sealed by a wall (5) comprising porous material that is positioned in the extension of the peripheral wall (21) of the pipe (2), according to a diameter (d5) substantially equal to the diameter of the pipe (2), in order to allow air to flow between the pipe (2) and the or each peripheral chamber (3).

Description

Technical field [0001] The present invention relates to a sound attenuation device for the intake line of an internal combustion engine equipped with one or more turbo compressors. Background technique [0002] Internal combustion engines have low-frequency sound components ranging from 30 Hz to 1 kHz. This composition is produced by the opening and closing of valves and the resonance of different cavities (combustion chambers, pipes...) of the engine. [0003] In addition, when the engine is supercharged by a turbo compressor, there are high-frequency sound components from 800 Hz to 15 kHz. The sound component is generated by the turbo compressor and can be transmitted and radiated through the intake duct. [0004] Traditional solutions for attenuating the noise propagated by the turbocompressor along the intake duct include in particular the use of resonators, silencers, quarter wave devices and expansion chambers. [0005] One of these solutions is described, for example, in docu...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): F02M35/12
CPCF02M35/1261F02M35/1266F02M35/1277F02M35/1288F02M35/1272F02M35/10006F02M35/10157Y02T10/12G10K11/162
Inventor T·琼A·劳伦斯基F·圭利蒙特A·普莱西
Owner NOVARES FRANCE
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com