KR100759765B1 - Apparatus for controlling exhaust gas of turbo vehicles - Google Patents

Abstract

An apparatus for controlling exhaust gas of a turbo vehicle is provided to enhance the output of an engine by reducing the exhaust resistance during a high speed driving. An apparatus for controlling exhaust gas of a turbo vehicle includes an exhaust pipe(5), a muffler, and a valve unit(20). The exhaust pipe is connected to a discharge side of an exhaust manifold of an engine to guide discharge of the exhaust gas. The muffler is installed in the middle of the exhaust pipe to allow the exhaust gas in the exhaust pipe to be discharged through the exhaust pipe after detouring along the circumference of the exhaust pipe. The valve unit selectively guides the exhaust gas by opening and closing a passage in the exhaust pipe to allow the exhaust gas to pass through the muffler or to be directly discharged into the exhaust pipe.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an exhaust gas control apparatus for a turbo vehicle,

1 is a perspective view of an exhaust gas control apparatus for a turbo vehicle according to Embodiment 1 of the present invention.

2 is a configuration diagram of an exhaust gas control apparatus for a turbo vehicle according to Embodiment 1 of the present invention.

3 is a diagram showing another example of valve driving means applied to the exhaust gas control apparatus of the turbo vehicle according to Embodiment 1 of the present invention.

4 is a perspective view of an exhaust gas control apparatus for a turbo vehicle according to Embodiment 2 of the present invention.

5 is a configuration diagram of an exhaust gas control apparatus for a turbo vehicle according to Embodiment 2 of the present invention.

6 is a diagram showing another example of valve driving means applied to an exhaust gas control apparatus of a turbo vehicle according to Embodiment 2 of the present invention.

Description of the Related Art [0002]

1: engine, 2: exhaust manifold

3: turbine, 4: exhaust guide pipe

5,14,60: exhaust pipe, 10: high output induction pipe

11: main body, 12, 13:

20: valve means, 21: butterfly valve

22: housing, 30: motor

40: actuator, 50: controller

70: muffler,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an exhaust gas control apparatus for a turbo vehicle and, more particularly, to an exhaust gas control apparatus for a turbo vehicle, which can reduce noise or maximize the engine output, ≪ / RTI >

Generally, the turbocharger is equipped with a turbo charger so that the intake air is compressed by the output of the combustion gas, thereby increasing the intake charge rate in the combustion chamber and improving the engine output.

In other words, a blower is installed in the intake measurement and a turbine is installed in the exhaust measurement. However, the turbine can be installed in the drive shaft at the same time to be interlocked with each other. In such a structure, the turbine is rotated by the exhaust gas So that the intake air supplied through the blower is compressed so that the intake charge rate in the combustion chamber can be increased.

However, when the engine is driven at a high speed in the above structure, the exhaust power of the exhaust gas becomes extremely high. When the exhaust gas is discharged through the turbine, the exhaust gas is discharged out of the exhaust output limit of the exhaust pipe, The back pressure of the turbine-side outlet is excessively increased to lower the turbine driving force to deteriorate the engine performance, and at the same time, the exhaust power is weakened and the emission is increased.

In other words, in the case of a turbo-engine vehicle, it is aimed at improving the output of the engine. However, extreme noise is generated in the exhaust system. In reality, noise reduction is more important than the output of the engine. There is a limit to it.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems occurring in the prior art, and it is an object of the present invention to provide an exhaust gas control apparatus for a turbo vehicle which can reduce the noise during traveling in a city, The purpose is to provide.

In order to achieve the above object, there is provided an exhaust gas control apparatus for a turbo vehicle, comprising: a valve means installed in an exhaust system of a turbo engine for reducing noise or maximizing an engine output by regulating a cross-sectional area of an exhaust pipe through which exhaust gas flows; .

The features and advantages of the present invention will become more apparent from the following detailed description based on the accompanying drawings. Prior to this, terms and words used in the present specification and claims are to be interpreted in accordance with the technical idea of the present invention based on the principle that the inventor can properly define the concept of the term in order to explain his invention in the best way. It must be interpreted in terms of meaning and concept.

≪ Example 1 >

As shown in Figs. 1 and 2, the exhaust gas control apparatus for a turbo vehicle according to the present embodiment controls the flow of exhaust gas, which is burned and discharged in the engine 1, to reduce noise Which is connected to the discharge side of the exhaust manifold 2 of the engine 1 and which discharges the exhaust gas combusted in the engine 1 to the outside, So as to reduce the noise or improve the output by adjusting the cross-sectional area of the flow path of the exhaust gas.

In the case of a turbo-engine vehicle, an exhaust manifold 4 equipped with a turbine 3 is connected to the exhaust manifold 2, and a first exhaust pipe 4 having a diameter smaller than that of the exhaust guide pipe 4 is connected to the exhaust- (5) is connected.

The present invention is mounted between an exhaust guide pipe (4) and a first exhaust pipe (4, 5) so as to increase the output of the engine (1) by allowing exhaust gas to flow while the resistance of the turbine (3) A high output induction pipe (10); And valve means (20) for controlling the exhaust gas to be selectively discharged through the first exhaust pipe (5) or the high output induction pipe (10).

The high output induction pipe 10 includes a tubular body 11 having first and second pipe joints 12 and 13 to be connected to the exhaust guide pipe 4 and the first exhaust pipe 5, And a second exhaust pipe (14) that branches off from the middle of the main body (11) and opens to exhaust the exhaust gas flowing along the main body (11). The main body 11 maintains the same diameter as the exhaust guide pipe 4 as a whole and the diameter of the second pipe 13 is smaller than that of the other pipe in order to join the pipe to the first exhaust pipe 5. [ The second exhaust pipe 14 is formed so as to have the same diameter as that of the main body 11 so as to prevent the exhaust pressure of the exhaust gas discharged from the main body 11 from changing. That is, the first exhaust pipe 5 is for noise reduction and the second exhaust pipe 14 is for output improvement.

The valve means 20 includes a butterfly valve 21 formed in a disc shape and rotatably installed in the second exhaust pipe 14 to control the flow cross sectional area of the second exhaust pipe 14, And driving means for driving the butterfly valve 21 in operation. The valve means 20 may be releasably coupled to the second exhaust pipe 14 through a tubular housing 22.

That is, the butterfly valve 21 has a diameter capable of closing the flow path inside the second exhaust pipe 14, and is rotatably mounted to the second exhaust pipe 14 via the rotary shaft 21a, And opens or closes the inside of the second exhaust pipe (14) while rotating with the means as a driving source.

The drive means may be a motor 30 for rotating the butterfly valve 21 in a bidirectional (or unidirectional) direction, or may be an actuator 40 (see FIG. 3). 3, the actuator 30 is connected to the suction system of the engine 1 and the transfer pipe 41 (see FIG. 3). The motor 30 is driven by the controller 50 to rotate the butterfly valve 21 in both directions, So that the butterfly valve 21 is forcibly rotated by the boost pressure supplied along the transfer pipe 41. The butterfly valve 21 can be installed through the elastic member so that the butterfly valve 21 returns to the original state (normal state) when the boost pressure is lost during the operation of the butterfly valve 21 using the boost pressure.

The connection structure of the butterfly valve 21 and the motor 30 and the actuator 40 is capable of all the ways that the butterfly valve 21 can be forcibly rotated. For example, a rotary shaft 21a is provided on a drive shaft (not shown) of the motor 30. [ 2, the plunger 31 is linearly movably connected to the driving gear (not shown) of the motor 30 (rack pinion type), and the rotary rod 32 is connected to the plunger 31 A method in which the rotary shaft 21a is rotated by the rotation of the rotary rod 32 is also possible.

The operation of the exhaust gas control apparatus of the turbo vehicle according to the present embodiment having the above-described structure is as follows.

1. Everyday.

It is not necessary to improve the output of the engine at the time of traveling in the city due to the vehicle, and it is necessary to reduce exhaust noise due to the exhaust gas because it is an object to be interrupted when noise is generated. Therefore, in this case, Reduce exhaust noise by increasing the resistance. 2 and 3, the second exhaust pipe 14 is closed by operating the butterfly valve 21 like a virtual line, whereby the exhaust gas is discharged through the first exhaust pipe 5 to reduce noise.

2. High-speed driving.

When the turbo engine is started when the engine is running at high speed as in the case of running on a highway, the butterfly valve 21 is set as shown by solid lines in FIGS. 2 and 3 by the control or boost pressure of the controller 50, And is discharged to the outside through the second exhaust pipe (14). At this time, since the second exhaust pipe 14 is larger in diameter than the first exhaust pipe 5, the output of the turbo engine rises because the exhaust resistance is weak.

≪ Example 2 >

4 and 5, an exhaust gas control apparatus for a turbo vehicle according to the present embodiment includes an exhaust pipe (exhaust pipe) connected to a discharge side of an exhaust manifold 2 of the engine 1 to guide the exhaust of exhaust gas 60); A muffler 70 installed in the middle of the exhaust pipe 60 to allow the exhaust gas discharged through the exhaust pipe 60 to bypass the exhaust pipe 60 and to be discharged to the outside; And valve means 20 for opening and closing the induction pipe inside the exhaust pipe 60 and guiding exhaust gas to pass through the muffler 70 or directly through the exhaust pipe 60.

The muffler 70 includes a closed casing 71 provided at the periphery of the discharge pipe 60 and first and second partition walls 72 and 73 for partitioning the space inside the casing 71 into three spaces S1, And a bypass pipe for guiding the exhaust gas discharged through the exhaust pipe 60 to be discharged after being bypassed without being discharged directly through the exhaust pipe 60.

The case 71 is provided with a space to reduce noise while bypassing the exhaust gas. The case 71 includes front and rear walls that are erected and fixed at regular intervals along the longitudinal direction of the exhaust pipe 60, and peripheral walls that are joined to the periphery of the front and rear walls Thereby forming a closed space at the periphery of the exhaust pipe 60.

The first and second barrier ribs 72 and 73 are plate-shaped portions that are coupled to the circumference of the exhaust pipe 60 and partition the inside of the case 71 into three sealed spaces S1, S2, and S3.

The bypass pipe is divided into a bypass inflow pipe (74) and a bypass discharge pipe (75). One end of the bypass inflow pipe 74 communicates with the front of the valve means 20 of the exhaust pipe 60 and penetrates the case 71 and the other end of the bypass inflow pipe 74 is in fluid communication with the second partition 73.

The bypass exhaust pipe 75 is connected to the first and second partition walls 72 and 73 at both sides in fluid communication with each other so that the exhaust gas passed through the bypass inflow pipe 74 is formed at the periphery of the exhaust pipe 60 And is discharged through the noise reduction hole (61).

A second space S2 between the first and second partition walls 72 and 73 of the bypass inflow pipe 74 and the bypass discharge pipe 75 is formed in the circumferential portion corresponding to the second space S2 of the exhaust pipe 60, And noise absorbing holes 61, 74a and 75a for attenuating noise are respectively formed in the peripheral portion corresponding to the first space S1 of the exhaust pipe 60. An inlet hole 62 is formed in the circumferential portion corresponding to the first space S1 of the exhaust pipe 60 do.

Exhaust gas can be leaked through the noise reduction holes 61, 74a, 75a in the respective pipes 60, 74, 75, but the amount thereof is small, and the first and second partitions 72 The exhaust gas pipe 60, the bypass inflow pipe 74 and the bypass discharge pipe 75 corresponding to the second spaces S2 between the exhaust pipes 73 and 73 are wound with a coating of fiberglass or the like, And is discharged along the path.

5 and 6, the valve unit 20 is the same as that of the first embodiment described above, so that a detailed description thereof will be omitted.

According to the present embodiment, the butterfly valve 21 is normally set as a hypothetical line in FIGS. 5 and 6 and can not be discharged directly through the exhaust pipe 60, and the bypass inlet pipe 74 and the third space S3 ) - Bypass exhaust pipe 75 - Exhausted through the inflow hole 62 of the exhaust pipe 60, noise is reduced.

On the other hand, at the time of high-speed traveling, the butterfly valve 21 is set as a solid line and is directly discharged through the exhaust pipe 60, so that the noise increases but the output of the turbo engine rises.

As described above, according to the exhaust gas control apparatus for a turbo vehicle according to the present invention, it is possible to reduce the exhaust noise by increasing the exhaust resistance in a situation where it is difficult to travel at a high speed such as in a city and the noise generation is interrupted, There is an effect that the engine output can be improved by increasing the engine output by greatly reducing the exhaust resistance even if the noise is somewhat increased.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. On the contrary, those skilled in the art will appreciate that many modifications and variations of the present invention are possible without departing from the spirit and scope of the appended claims. Accordingly, all such appropriate modifications and changes, and equivalents thereof, should be regarded as within the scope of the present invention.

Claims (6)

delete delete An exhaust pipe connected to a discharge side of an exhaust manifold of the engine and guiding exhaust of the exhaust gas; A muffler installed in the middle of the exhaust pipe so that the exhaust gas in the exhaust pipe bypasses along the periphery of the exhaust pipe and is discharged through the exhaust pipe; And valve means for selectively guiding the exhaust gas flowing through the muffler or directly to the exhaust pipe by opening and closing an induction pipe inside the exhaust pipe, the exhaust gas control device comprising: The muffler includes a case defining a space at a circumference of the exhaust pipe, a first and a second exhaust pipes arranged at a predetermined interval in the longitudinal direction of the exhaust pipe to partition the inside of the case into a plurality of closed spaces, A partition wall having one end communicated with the front of the valve means of the exhaust pipe, the other end passing through the case and being fluidly communicable with the second partition, and a peripheral portion corresponding to the first and the second partition, Holes are formed in the bypass inlet pipe and both end portions thereof are connected to the first and second partition walls so as to be in fluid communication with each other and a plurality of noise reduction holes are provided in the periphery thereof so that exhaust gas passed through the bypass inlet pipe flows into the exhaust pipe And a bypass exhaust pipe for guiding the exhaust gas to be exhausted through a noise reduction hole formed in the periphery of the exhaust gas Device. delete delete delete

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