Device comprising silencer and aerodynamic deflector

A technology of aerodynamics and mufflers, applied to mechanical equipment, machines/engines, gas chambers, etc.

Active Publication Date: 2020-09-04
RENAULT SA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] This invention aims to propose an alternative solution to the need to improve the aerodynamics of the muffler stage

Method used

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  • Device comprising silencer and aerodynamic deflector
  • Device comprising silencer and aerodynamic deflector

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Embodiment Construction

[0027] In the following description, reference is made to the reference frame XYZ, where X is the front and rear longitudinal direction of the vehicle oriented towards the rear, Y is the transverse direction oriented to the right side of the vehicle, and Z is the vertical direction oriented upwards from the vehicle.

[0028] figure 1 The device according to the invention is shown in a three-quarter perspective view, which is intended in particular for a motor vehicle with an internal combustion engine. This device comprises a muffler 1 in the form of a closing sheath 10 made of stainless steel, which defines a hollow body of elongate shape as a whole, which is at its axial end 11 (at figure 1 , the second axial end is not visible) is closed. The sheath comprises an input aperture at the front of the device (according to an example at the center of the device's front side wall), and an output aperture at one side of the device (at the figure 1 not visible in ). As known per ...

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PUM

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Abstract

The invention relates to a device of a motor vehicle, comprising a silencer (1) that dampens noise of the exhaust gases of the engine, the silencer having a closed envelope (10) comprising exhaust gasinlets and outlets, and an aerodynamic deflector on the silencer, the device being characterised in that it comprises a thermally insulating screen (2) enveloping the outer surface of the envelope (1) of the silencer and having a portion (210) that forms the aerodynamic deflector.

Description

technical field [0001] The invention relates to a device comprising an exhaust muffler of an engine and an aerodynamic deflector, in particular located under the floor of a motor vehicle. Background technique [0002] A motor vehicle with an internal combustion engine conventionally includes a muffler under its floor, the main function of which is to attenuate the noise of the gases emitted by the engine. The location and form of the muffler must meet rear crash test requirements while matching the vehicle's architecture. Conventionally, mufflers take the form of a closed sheath that is generally elongated and has an input orifice and an output orifice. The jacket is arranged internally to allow gas of the exhaust circuit to pass between the input and output apertures. These input orifices and output orifices are respectively connected to an input tube and one or more output tubes on the exhaust circuit. The muffler is usually located under the vehicle's floor near the re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01N1/00F01N13/18F01N13/08F01N13/14
CPCF01N13/082F01N13/143F01N13/1838F01N1/00F01N2260/20F01N2450/22F01N2450/24F01N2530/00B62D35/02
Inventor R·平萨尔
Owner RENAULT SA
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