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Catalytic converter cover

A catalytic converter and outer cover technology, which is applied in the field of improving the NVH characteristics of vehicles, and can solve problems such as damage to vehicle NVH characteristics and unstable driving

Inactive Publication Date: 2007-04-11
HYUNDAI MOTOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Such noise and vibration emitted from the catalytic converter impairs the NVH characteristics of the vehicle, resulting in a rough ride

Method used

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  • Catalytic converter cover
  • Catalytic converter cover

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Embodiment Construction

[0009] Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[0010] Referring to FIGS. 1 and 2 , a catalytic converter housing 1 according to an embodiment of the present invention includes an upper housing 5 and a lower housing 7 surrounding a catalytic converter 3 . Each of the upper cover 5 and the lower cover 7 has a shape in which an arcuate cross-section extends a predetermined length in the direction in which exhaust gas passes through the catalytic converter 3 .

[0011] The upper cover 5 and the lower cover 7 face each other around the catalytic converter 3 . Both sides of the first end of the upper cover body 5 and the lower cover body 7 overlap each other, and are fixed with the catalytic converter 3 at a predetermined position adjacent to the exhaust gas inlet or exhaust gas outlet of the catalytic converter 3 . The middle portion of the second end of each upper cover body 5 and lower cover bod...

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PUM

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Abstract

The invention provides a catalytic converter cover which consists of an upper cover and a lower cover which has a plurality of overlapping plates with different thicknesses. Thus, it can insulate and absorb the noise and the libration effectively projected by the catalytic converter to improve the NVH characteristic of the vehicle.

Description

technical field [0001] The present invention relates to a catalytic converter, and more particularly, to a technique for isolating noise generated in a catalytic converter of a vehicle, thereby improving NVH (Noise, Vibration, Harshness) characteristics of the vehicle. Background technique [0002] As is known to those skilled in the art, catalytic converters are used to purify gases exhausted from the combustion chambers of a vehicle's engine. The noise and vibration of the engine transmitted through the exhaust manifold and exhaust gas are emitted to the outside through the surface of the catalytic converter. [0003] Such noise and vibration emitted from the catalytic converter impairs NVH characteristics of the vehicle, resulting in rough running. Therefore, noise and vibration emitted from the catalytic converter should be properly isolated and absorbed. Contents of the invention [0004] Embodiments of the present invention provide a catalytic converter cover capab...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01N3/28
CPCF01N13/14F01N2260/20F01N3/055Y02T10/20Y02T10/12
Inventor 白云锡
Owner HYUNDAI MOTOR CO LTD
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