KR20120054136A - Muffler for waste gas reducing of car - Google Patents

Abstract

PURPOSE: A car muffler for reducing harmful gases is provided to improve the fuel efficiency and reduce toxic gases by controlling a spring coefficient and setting a first location of gas control plate by using a plurality of preload rings. CONSTITUTION: A gas quantity controller(30) of a car muffler for reducing harmful gases comprises a control pipe(31), a fixing shaft(32), a regulating plate of the gas quantity(33), a support plate(34) of the fixing shaft, a support ring of the fixing shaft(35), an elastic spring(36), a buffer spring(37), and a plurality of preload rings(40). The control pipe with a plurality of through holes is connected to a gas inflow pipe(11). The regulating plate of the gas quantity is installed in the fixing shaft to be slid. A location of the regulating plate of the gas quantity is changed according to pressures of exhaust gases. The support plate(34) of the fixing shaft fastens one end of the fixing shaft and shuts down an outlet of the control pipe. The support ring of the fixing shaft supports the other end of the fixing shaft. The elastic spring elastically supports the regulating plate of the gas quantity. The buffer spring prevents the control plate of the gas quantity from colliding with the support ring of the fixing shaft. A plurality of the preload rings is inserted into the outside a spring cover(38). The preload ring sets an initial position of the control plate of a gas quantity.

Description

Muffler for Waste Gas Reducing of Car}

The present invention relates to a vehicle silencer that discharges by lowering the temperature and pressure of the combustion gas generated in the engine of the vehicle, in particular, the harmful gas that can minimize the emission of harmful gas by automatically adjusting the gas emissions in accordance with the pressure of the exhaust gas. A reduced vehicle silencer.

In general, since the exhaust gas of a car is a high-temperature, high-pressure combustion gas emitted from the engine is discharged to the atmosphere as it is, it causes environmental pollution as well as a large noise caused by the pressure difference. Accordingly, the exhaust pipe through which the combustion gas of the vehicle is discharged is provided with a silencer to reduce the exhaust pressure and reduce various harmful gases.

In general, a vehicle silencer is provided with a plurality of bulkheads inside the body to reduce the noise by reducing the exhaust pressure of the exhaust gas flowing into the body, and uses a three-way catalyst to reduce the harmful gas. That is, the exhaust gas of automobiles includes unburned gases such as carbon monoxide (CO) and hydrocarbons (HC) and harmful gases such as nitrogen oxides (NOx), and air may be polluted by these harmful gases. Accordingly, the muffler is attached with a three-way catalyst to reduce the amount of these harmful gases.

By the way, the muffler with the partition wall reduces the noise by using the partition wall and the through-hole, but because the partition itself blocks the exhaust flow and does not exhaust all the exhaust gas generated from the engine, so-called back pressure (Back Pressure) This causes a back pressure, which causes a burden on the engine and causes a decrease in output. As a result, the engine output is increased more than necessary, which may cause fuel consumption to increase.

Accordingly, the present applicant uses a gas amount adjusting means that can control the amount of exhaust gas flowing into the silencer according to the pressure of the exhaust gas to block the occurrence of back pressure, reduce the burden on the engine, and prevent the output silencer. And registered as Utility Model Registration Nos. 20-0414227, 20-0415227 and 20-0435902.

The conventional vehicle silencers have an effect of reducing the burden on the engine and reducing fuel through the generation of the back pressure by controlling the amount of exhaust gas introduced into the silencer using the gas amount adjusting means. In addition, by controlling the amount of the exhaust gas introduced into the silencer, the combustion of the unburned gas through the catalytic reaction was able to obtain the effect of minimizing the emission of harmful gases.

However, the above-mentioned conventional vehicle silencers use a gas amount adjusting means corresponding to each vehicle type, and thus, there is a problem in that the gas amount adjusting means cannot be adjusted according to the characteristics of the individual vehicle and its generality is inferior.

That is, the gas amount adjusting means can be configured to correspond to each vehicle type, but when applied to the actual vehicle, it is not possible to adjust the spring coefficient of the gas amount adjusting means and the size of the gas discharge pipe according to the deviation of the amount of combustion gas generated in the individual vehicle It is difficult to make it into a state, and as it is separately configured to correspond to each vehicle type, the versatility decreases, causing a rise in manufacturing cost.

In addition, in the conventional automobile silencers, as the combustion of the unburned gas is performed, the temperature of the exhaust gas is increased to reduce the amount of NOx contained in the exhaust gas.

The present invention has been made to solve the above-mentioned conventional problems, by adjusting the spring coefficient of the gas amount adjusting means according to the state or type of the individual vehicle to configure the most suitable form for each vehicle to minimize the amount of harmful gas generated The purpose of the present invention is to provide an automobile silencer for reducing harmful gas that can improve fuel economy and reduce manufacturing costs.

In addition, an object of the present invention is to provide a harmful gas reducing vehicle silencer that can minimize the emission of nitrogen oxides by lowering the internal temperature of the body constituting the silencer.

In addition, an object of the present invention is to provide a harmful gas reduction type vehicle silencer that can prevent the occurrence of back pressure by enabling the replacement of the gas discharge pipe corresponding to the exhaust gas generation amount of the individual vehicle.

The present invention for achieving the above object, and the body is connected to each of the gas inlet pipe and the exhaust gas inlet pipe exhaust gas flows; At least two noise reduction pipes, the interior of which is partitioned into a plurality of zones by a partition wall and a plurality of through-holes are formed along the circumferential surface and installed in the body; In the silencer for a vehicle comprising: a gas amount adjusting means which is connected to the gas inlet pipe is installed inside the noise reduction pipe located at the innermost to increase and decrease the discharge amount according to the pressure of the exhaust gas; And a plurality of through-holes formed at regular intervals on the outer circumferential surface, the control tube connected to the gas inlet tube, a fixed shaft installed inside the control tube, and sliding on the fixed shaft to move back and forth within the control tube. A gas amount control plate which is installed to be changed in accordance with the exhaust gas pressure, a fixed shaft support plate which blocks an outlet side of the control pipe and fixes one end of the fixed shaft, and is installed at the inlet side of the control pipe A fixed shaft support ring for supporting the other end of the shaft, and installed on the fixed shaft to elastically support the gas amount control plate. A spring, a buffer spring installed on the fixed shaft support ring so that the gas amount adjusting plate does not collide with the fixed shaft support ring, a spring cover installed on the fixed shaft support plate, and protecting the elastic spring; The end of the combination is characterized in that it comprises a plurality of preloading ring is fixed to the control tube fixing screw fixed to the body, and inserted into the spring cover to set the initial position of the gas amount control plate.

In addition, the harmful gas reducing vehicle silencer of the present invention, characterized in that it further comprises a cooling pipe installed to penetrate the body in the longitudinal direction to cool the exhaust gas inside the body.

In addition, according to the harmful gas reducing vehicle silencer of the present invention, the gas discharge pipe is characterized in that it is detachably coupled to the body.

Hazardous gas reduction type vehicle silencer of the present invention is to adjust the spring coefficient of the elastic spring by setting the initial position of the gas throttle plate using a plurality of preload rings, so that each vehicle in consideration of the state of the individual vehicle The most suitable form has the effect of reducing the amount of harmful gases and improving fuel economy.

In addition, according to the harmful gas reducing vehicle silencer of the present invention, by cooling the exhaust gas inside the body using a cooling pipe installed in the body of the silencer, there is an effect that can minimize the amount of nitrogen oxides generated at high temperatures. .

In addition, according to the harmful gas reducing vehicle silencer of the present invention, it is possible to remove the gas discharge pipe installed in the body of the silencer, so that the use of the gas discharge pipe is replaced according to the amount of exhaust gas to prevent the occurrence of back pressure and improve fuel economy. It can be effective.

1 is a block diagram of a harmful gas reducing vehicle silencer according to the present invention.
FIG. 2 is a detailed view of " A "
3 is an external perspective view of the harmful gas reducing vehicle silencer of the present invention.
Figure 4 is a block diagram showing the removable structure of the gas discharge pipe which is the main configuration of the present invention.

Hereinafter, with reference to the accompanying drawings, the harmful gas-reducing vehicle silencer of the present invention will be described.

As illustrated in FIGS. 1 to 3, the harmful gas reducing vehicle silencer according to the present invention includes a body in which a gas inlet pipe 11 into which exhaust gas is introduced and a gas discharge pipe 12 into which exhaust gas is discharged, respectively. 10); A cooling pipe 15 installed to penetrate the body 10 in a longitudinal direction and cooling the exhaust gas in the body 10; At least two noise reduction pipes 20 each of which is divided into a plurality of zones by a partition wall (not shown) and a plurality of through holes 25 are formed along the circumferential surface and installed in the body 10; It is connected to the gas inlet pipe 11 is installed in the interior of the noise reduction pipe 20 located in the innermost and the gas amount adjusting means 30 to increase and decrease the exhaust amount in accordance with the pressure of the exhaust gas;

Here, the gas amount adjusting means 30, a plurality of through-holes 31 'are formed on the outer circumferential surface at regular intervals, the control pipe 31 is connected to the gas inlet pipe 11 and the control pipe 31 The gas amount control plate 33 is installed to be fixed to the fixed shaft 32 and the fixed shaft 32 so as to move back and forth within the control tube 31, the position is changed according to the exhaust gas pressure. And a fixed shaft support plate 34 which blocks an outlet side of the control tube 31 and fixes one end of the fixed shaft 32, and is installed at an inlet side of the control tube 31. A fixed shaft support ring (35) for supporting the other end of the c), an elastic spring (36) installed on the fixed shaft (32) to elastically support the gas amount control plate (33), and the fixed shaft support ring (35). A shock absorbing spring (37) installed to prevent the gas amount adjusting plate (33) from colliding with the fixed shaft support ring (35), and A spring cover 38 installed on the support plate 34 to protect the elastic spring 36 and an end of the control tube 31 are coupled to the control tube fixing screw 39 fixed to the body 10. And a plurality of preload rings 40 inserted into the outside of the spring cover 38 to set an initial position of the gas amount adjusting plate 33.

And, as shown in Figure 4, the gas discharge pipe 12 is preferably detachably coupled to the body 10 to be replaced with parts of different diameters according to the amount of exhaust gas generated in the individual vehicle. Do.

Referring to the operation of the harmful gas reducing vehicle silencer of the present invention configured as described above are as follows.

First, the initial position of the gas amount control plate 33 is determined in consideration of the vehicle model or the state of the vehicle. That is, the initial pressure is applied to the elastic spring 36 by adjusting the number of the preload rings 40 inserted into the outer side of the spring cover 38 to determine the initial position of the gas amount adjusting plate 33. Therefore, the gas amount adjusting plate 33 can be positioned at an appropriate position for each individual vehicle.

When the initial position of the gas amount adjusting plate 33 is determined through the above process, the gas amount adjusting means 10 is installed on the body 10 of the silencer, so that the gas inlet pipe 11 adjusts the gas amount adjusting means 30. To the tube 31. At this time, since the control tube fixing screw 39 for supporting the control tube 31 is fastened to the body 10, the gas amount adjusting means 30 can be separated as necessary.

In this state, when the exhaust gas generated from the engine flows through the gas inlet pipe 11, the gas amount adjusting plate 33 retreats while pressing the elastic spring 36 according to the pressure of the exhaust gas. A plurality of through holes 31 ′ formed in the control pipe 31 are opened so that the exhaust gas introduced into the control pipe 31 exits the inside of the noise reduction pipe 20 through the through holes 31 ′. The noise reduction pipe 20 lowers the exhaust pressure of the exhaust gas by using the partition wall and the through hole 25, and the three-way catalyst attached to the noise reduction pipe 20 may include carbon monoxide and hydrocarbons contained in the exhaust gas. It is catalyzed to complete combustion of unburned gas.

Exhaust gas escaped through the through hole 25 of the noise reduction pipe 20 is whirled along the inner surface of the body 10, and through the gas discharge pipe 12 provided on one side of the body 10. It will exit to the outside. At this time, since the exhaust gas is contacted with the cooling pipe 15 installed through the body 10 in the longitudinal direction and cooled by heat exchange with external air passing through the cooling pipe 15, the body 10 is inside the body 10. The temperature of does not rise above a certain temperature, thereby minimizing the generation of nitrogen oxides.

In this case, the gas discharge pipe 12 is replaced and installed so that the diameter of the gas discharge pipe 12 corresponds to the amount of the exhaust gas flowing out through the gas discharge pipe 12 from the body 10. Therefore, it is possible to prevent the pressure inside the body 10 from rising above a certain level, and the back pressure is not generated, thereby reducing the burden on the engine and preventing the output from being lowered.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is clearly understood that the same is by way of illustration and example only and is not to be taken by way of limitation, Changes will be possible.

10: body
11: gas inlet pipe
12: gas discharge pipe
15: cooling pipe
20: Noise reduction pipe
25: through
30: gas amount adjusting means
31: control tube
31 ': through-hole
32: fixed shaft
33: gas volume control plate
34: fixed shaft support plate
35: fixed shaft support ring
36: elastic spring
37: buffer spring
38: spring cover
39: adjusting tube fixing screw
40: Pre-Load Ring

Claims (3)

A body 10 to which the gas inlet pipe 11 through which the exhaust gas is introduced and the gas discharge pipe 12 through which the exhaust gas is discharged are respectively connected; At least two noise reduction pipes 20 which are partitioned by a partition into a plurality of zones and have a plurality of through holes 25 formed along the circumferential surface thereof and are installed in the body 10; It is connected to the gas inlet pipe 11 is installed inside the noise reduction pipe 20 located in the innermost and the gas amount adjusting means 30 to increase and decrease the exhaust amount in accordance with the pressure of the exhaust gas; In the muffler,
The gas amount adjusting means 30, a plurality of through-hole 31 'is formed on the outer circumferential surface at regular intervals, the control pipe 31 is connected to the gas inlet pipe 11 and the inside of the control pipe 31; A fixed amount shaft 32 to be installed, a gas amount adjusting plate 33 slidably installed on the fixed shaft 32 so as to move back and forth within the control tube 31, and whose position is changed according to the exhaust gas pressure; A fixed shaft support plate 34 for blocking an outlet side of the control tube 31 and fixing one end of the fixed shaft 32 and an inlet side of the control tube 31 to A fixed shaft support ring 35 supporting the other end, an elastic spring 36 installed on the fixed shaft 32 and elastically supporting the gas amount control plate 33, and a fixed shaft support ring 35 A buffer spring 37 for preventing the gas amount adjusting plate 33 from colliding with the fixed shaft support ring 35, and the fixed shaft support A spring cover 38 installed on the fingerboard 34 to protect the elastic spring 36, an end of the control tube 31 is coupled to an adjustment tube fixing screw 39 fixed to the body 10; And a plurality of preload rings (40) inserted into the outer side of the spring cover (38) to set an initial position of the gas amount control plate (33). The method of claim 1,
Hazardous gas reduction vehicle silencer, characterized in that it further comprises a cooling pipe (15) installed to penetrate the body (10) in the longitudinal direction to cool the exhaust gas inside the body (10). The method according to claim 1 or 2,
The gas discharge pipe 12 is a harmful gas reducing vehicle silencer, characterized in that detachably coupled to the body (10).

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