KR20030016564A - Main resonator for vehicles - Google Patents

Abstract

PURPOSE: A main resonator is provided to reduce the radiating sound and the cost by equipping a glass wool between cases. CONSTITUTION: A main resonator(10) for a vehicle comprises an outer case(11), many inner pipes(12), an inner case(13) and an absorbing device, a glass wool(14). The outer case is installed in the one side of an exhaust pipe. The inner pipes are connected with the exhaust pipe in the outer case. The inner case is installed at a certain interval from the outer case. The absorbing device installed between the outer and inner case absorbs radiating sound and thermal energy between the outer case and the inner case.

Description

Car Main Resonator {MAIN RESONATOR FOR VEHICLES}

The present invention relates to a vehicle main resonator, and more particularly, to a vehicle main resonator with improved radiation and thermal degradation.

The exhaust pipe installed in the vehicle is a steel pipe that discharges the exhaust gas from the exhaust manifold to the outside, and a main resonator is installed in the middle thereof. The main resonator reduces exhaust noise by lowering the temperature and pressure of the exhaust gases emitted from the engine.

There are many forms of the main resonator structure, but usually the steel plate of 1mm is made into a cylindrical shape and the inside is divided into several spaces. The temperature decreases, and the noise gradually increases.

However, if the main resonator's resistance is too high to increase the noise effect, the engine's sound level decreases, but the engine's output is reduced due to the increase in resistance to the exhaust stroke, that is, the back pressure. Deciding the degree of

On the other hand, in the conventional art, in order to improve radio noise, which is noise generated when the exhaust gas passes through the exhaust pipe in the vehicle and mutual interference or exhaust gas strikes the outer wall of the main resonator, the cross-sectional area of the main resonator of the vehicle is increased or the main The stiffness of the resonator is mainly reinforced. For example, many cases have been used to increase the thickness of the case or to add a bracket to the case to force the case.

In addition, a heat protector was added as a countermeasure against thermal damage.

However, even if the above-described method is carried out, it is difficult to completely remove the radiation, the weight is increased according to the rigid reinforcement, the cost side is disadvantageous.

In addition, as the heat protector is added as a countermeasure against heat damage, there is a problem that causes a cost increase.

The present invention has been made to solve the above problems, and an object of the present invention is to provide a main resonator for a vehicle in which radiation can be reduced and thermal cost reduction can be achieved.

1 is an external perspective view of a vehicle main resonator according to the present invention;

FIG. 2 is a schematic cross-sectional view taken along line A-A in FIG. 1. FIG.

<Description of the symbols for the main parts of the drawings>

10. Main Resonator

11. Outer case

12. Inner pipe

13. inner case

14. Glass wool

20. Exhaust Pipe

The vehicle main resonator of the present invention for achieving the above object, the vehicle main resonator is installed in the exhaust pipe discharged from the engine of the vehicle to reduce the exhaust noise, the outer case provided on one side of the exhaust pipe; An inner pipe installed inside the outer case in communication with the exhaust pipe; An inner case installed at a predetermined distance from the inside of the outer case; And an absorbing means provided between the outer case and the inner case to absorb radiation sound and thermal energy.

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

FIG. 1 is a perspective view of an exterior of a vehicle main resonator according to the present invention, and FIG. 2 is a schematic cross-sectional view of the main resonator shown in FIG. 1 along the line A-A. Here, the description of the configuration of the general vehicle main resonator will be omitted, and only the configuration according to the features of the present invention will be described.

Referring to each of the drawings, the vehicle main resonator 10 according to the present invention is installed in the exhaust pipe 20 discharged from the engine of the vehicle to reduce the exhaust noise, the outer installed on one side of the exhaust pipe 20 An inner case 11, an inner pipe 12 installed in communication with the exhaust pipe 20 in a plurality of inner cases 11, and predetermined from the inside of the outer case 11; And an inner case 13 provided at intervals, and an absorbing means provided between the outer case 11 and the inner case 13 to absorb radiation sound and thermal energy.

Here, the absorbing means is made of glass wool (14).

In the inner case 13, the protrusion 13a and the inlet 13b are continuously formed to maximize the cross-sectional area.

Referring to the operation of the vehicle main resonator 10 according to the present invention having the configuration as described above are as follows. Here, the description of the operation of the general vehicle main resonator will be omitted, and only the operation according to the features of the present invention will be described.

Referring back to the drawings, the vehicle main resonator 10 according to the present invention, the outer case 11 and the inner case 13 in two layers in order to solve the radiation noise and the thermal damage at the same time, the inner case ( In order to maximize the cross-sectional area where the exhaust gas can hit the shape of 13), the shape of the inner case 13 is continuously formed as shown in FIG. 2, and the projection part 13a and the inlet part 13b are radiated continuously. Try to reduce the sound.

The glass wool 14 is added between the inner case 13 and the outer case 11 to absorb the remaining radiation from the glass wool 14.

In addition, because the glass wool 14 has a property of absorbing thermal energy, it can be usefully used as a countermeasure against heat by adjusting its thickness.

As described above, the vehicle main resonator according to the present invention has the following effects.

The case is doubled, and the glass wool is provided between these cases, and in particular, by adjusting the shape of the inner case, it is possible to simultaneously solve the radiation sound and the deterioration countermeasure. As a result, it is possible to replace the heat protector used for thermal degradation measures, and thus cost reduction can be achieved.

Although the present invention has been described with reference to one embodiment shown in the drawings, this is merely exemplary, and it will be understood by those skilled in the art that various modifications and equivalent embodiments are possible. Therefore, the true scope of protection of the present invention should be defined only by the appended claims.

Claims (3)

In a vehicle main resonator installed in the exhaust pipe discharged from the engine of the vehicle to reduce exhaust noise, An outer case installed at one side of the exhaust pipe; An inner pipe installed inside the outer case in communication with the exhaust pipe; An inner case installed at a predetermined distance from the inside of the outer case; And an absorbing means provided between the outer case and the inner case to absorb radiating sound and thermal energy. The method of claim 1, The absorbing means is a vehicle main resonator, characterized in that it comprises a glass wool. The method of claim 1, The inner case is a vehicle main resonator, characterized in that the projection and the inlet is formed continuously to maximize the cross-sectional area.