KR19980036382A - Car exhaust - Google Patents

Abstract

This invention seeks to extend the capacity of the main silence which substantially reduces exhaust pulsation and noise and exhaust losses. To this end, a front exhaust pipe to which an engine is connected to an exhaust manifold, a catalytic converter connected to the front exhaust pipe, a rear exhaust pipe connected to the catalytic converter and having a pre-silencer attached in the middle, and the rear exhaust In the vehicle exhaust system comprising a main silencer connected to a pipe, the main silencer (9, 90) is installed in parallel to the rear branch pipe 13, two lines branching through the pre-silencer (7), respectively. It is characterized by.

Description

Car exhaust

1 is a bottom view of a vehicle showing a configuration of a conventionally known exhaust device.

2 is a cross-sectional view taken along the line A-A of FIG.

3 is a bottom view of a vehicle showing the configuration of the exhaust system according to the present invention.

4 is a cross-sectional view taken along line B-B of FIG.

* Description of the symbols for the main parts of the drawings *

1: front side exhaust pipe 3: catalytic converter

5: rear exhaust pipe 7: pre-silencer

9, 90: Main silencer 11: Rear floor

13: branch pipe

Technical Field of the Invention

The present invention relates to an exhaust device of an automobile, and more particularly, to an exhaust device capable of reducing the pulsation noise or noise and exhaust loss caused by exhaust gas discharged from an engine by expanding the capacity of the silencer.

[Private Technology]

In general, the exhaust device of a vehicle is installed in the lower part of the vehicle body to exhaust the combustion gas discharged after being burned in the combustion chamber of the engine to the outside, oxidizing and reducing toxic components of the exhaust gas, exhaust pulsation noise and exhaust loss It is installed to reduce the

Conventionally known structures of such exhaust devices are shown in FIGS. 1 and 2. Here, FIG. 1 is a bottom view showing a front wheel drive type vehicle, and FIG. 2 is a cross-sectional view cut along the line A-A of FIG.

As shown, the exhaust device is connected to the front exhaust pipe 1 connected to the exhaust manifold of the engine, the catalytic converter 3 connected to the front exhaust pipe 1, and the catalytic converter 3 and is approximately It consists of the rear exhaust pipe 5 to which the pre silencer 7 is attached in the middle, and the main silencer 9 couple | bonded with the edge part of the said rear exhaust pipe 5.

[Technical problem to be achieved]

In the conventional exhaust device of the front-wheel drive system configured as described above, the main silencer 9 is installed on one side of the rear floor 11 to avoid interference with the vehicle body and is connected in series with the pre-silencer. This is very limited.

For this reason, the conventional vehicle does not effectively reduce the exhaust noise, which is accompanied with the problem of increasing exhaust pulsation and exhaust loss. Therefore, in recent years, the means which can reduce exhaust pulsation, noise, and exhaust loss is calculated | required.

The present invention has been made to meet the above-described demands of the prior art, and its object is to increase the capacity of the silencer to reduce exhaust pulsation and noise and exhaust loss, so that the performance of the exhaust system can be further improved.

[Configuration and Function of Invention]

As a means for realizing the above object, the present invention provides a front exhaust pipe connected to an exhaust manifold of an engine, a catalytic converter connected to the front exhaust pipe, and a pre-silencer attached to and approximately in the middle of the catalytic converter. A vehicle exhaust device comprising a rear exhaust pipe and a main silencer connected to the rear exhaust pipe, wherein the main silencer is installed in parallel to two rear branch pipes branched through the pre-silencer. It is done.

According to this configuration, the exhaust gas discharged through the exhaust manifold of the engine is first attenuated by the pre-silencer, and the second attenuated by the two main silencers respectively installed in the two separate pipes. It is discharged to the outside.

This action eventually doubles the capacity of the main silencer, effectively reducing exhaust pulsations, noise and exhaust losses.

EXAMPLE

EMBODIMENT OF THE INVENTION Hereinafter, the preferred embodiment for implementing this invention is demonstrated in detail based on an accompanying drawing.

3 is a bottom view of the vehicle, and FIG. 4 is a cross-sectional view taken along line B-B of FIG.

In describing this embodiment, the same reference numerals are used for the configuration of this embodiment, which is the same as the drawings cited in the prior art, and will not be described again for clarity of explanation.

As can be seen from the drawing, the exhaust system according to this embodiment is, as in the prior art, the front exhaust pipe 1 connected to the exhaust manifold of the engine, and the catalytic converter connected to the front exhaust pipe 1 ( 3), a rear exhaust pipe 5 connected to the catalytic converter 3 and to which a pre-silencer 7 is attached approximately in the middle, and a main silencer 9, 90 coupled to an end of the rear exhaust pipe 5. ) Is included.

In this configuration, this embodiment is intended to expand the capacity of the silencer in order to reduce exhaust pulsation, noise and exhaust loss caused by the working capacity of the conventional silencer.

More specifically, the rear exhaust pipe 5 connected through the presilencer 7 includes a branch pipe 13 which is separated into two lines unlike the conventional art. In addition, main silencers 9 and 90 are respectively provided on the left and right sides of the rear branch pipes 13 of the two lines with respect to the rear floor 11 of the vehicle body.

According to the configuration of this embodiment described above, the exhaust gas discharged from the combustion chamber of the engine passes through the exhaust manifold, the front exhaust pipe 1 and the catalytic converter 3, and then passes through the pre-silencer 7, Subsequently, exhaust pulsation, noise and exhaust loss are attenuated in two passes through the main silencers 9 and 90 respectively installed in parallel through the rear branch pipe 13 composed of two lines, and then the tail pipe is Through the outside.

[Effects of the Invention]

By passing through the embodiments described above, the exhaust system of the automobile according to the present invention substantially solves the problems of the prior art.

In other words, according to the present invention, the pulsation, noise, and exhaust loss of the exhaust gas are reduced by the pre-silencer and the two main silencers, thereby further improving the performance of the exhaust system.

In addition, the present invention contributes to reducing the vibration of the vehicle and improving the output of the engine due to the above effects.

On the other hand, the present invention is not limited to the above-described specific preferred embodiments, and any person having ordinary skill in the art to which the present invention pertains without departing from the gist of the present invention claimed in the claims may make various changes. Would be possible.

Claims (1)

A front exhaust pipe connected to the exhaust manifold of the engine, a catalytic converter connected to the front exhaust pipe, a rear exhaust pipe connected to the catalytic converter and attached with a pre-silencer in the middle, and connected to the rear exhaust pipe. A vehicle exhaust system comprising a main silencer, wherein the main silencer is installed in each of two rear branch pipes branching through the pre-silencer.