KR200374553Y1 - Exhaust for automobile - Google Patents

Abstract

The present invention relates to an exhaust port for exhaust gas used in an internal combustion engine, and more particularly, a vehicle which is useful for improving fuel efficiency and output by quickly exhausting exhaust gas using an air flow in a silencer tail pipe provided in an exhaust path of an automobile. It relates to the exhaust vent for.

The present invention has been made to improve the efficiency by improving the applicant's prior application technology, and the exhaust gas discharged through the silencer tail pipe to form a jet stream and to increase the exhaust speed by venturi phenomenon. By allowing the exhaust air to circulate and exhaust, the exhaust velocity is accelerated to speed up the exhaust gas, and the exhaust gas is rapidly discharged while the exhaust gas flows back into the atmosphere from the middle of the tail pipe, while the exhaust gas is discharged quickly. In order to provide a vehicle exhaust port which can increase the output to prevent the increase, one end is cut inward to the tail pipe 20 formed at the rear end of the normal silencer 10 provided in the path of the exhaust gas discharged from the engine of the vehicle. The curved first and second fixing vanes 30 and 40 are formed in a streamlined shape and the first and second fixing vanes 30 and 40 are streamlined. The phosphors 30 and 40 are connected to the first and second fixed vanes 30 and 40 in a vehicle exhaust port spaced apart from each other by a predetermined distance and face each other, and the pipe 52 is sealed to the tail pipe. It is characterized by including the circulating exhaust port 50 welded.

Description

Exhaust for automobile

The present invention relates to an exhaust port for exhaust gas used in an internal combustion engine, and more particularly, a vehicle which is useful for improving fuel efficiency and output by quickly exhausting exhaust gas using an air flow in a silencer tail pipe provided in an exhaust path of an automobile. It relates to the exhaust vent for.

As is well known, in an automobile using an internal combustion engine, power is obtained by four strokes of suction, compression, explosion, and exhaust.

Looking at the flow of air (intake, exhaust) during the stroke of the engine when the air cleaner, the throttle valve, etc. in the intake process, the inflow is made without a relatively large resistance.

However, in the exhaust process, the exhaust pipe is exhausted to the tail pipe through an exhaust manifold, an air purifier using a catalyst, and a silencer, which generates considerable resistance to the exhaust flow.

In the process of discharging from the cylinder of the engine to the tail pipe of the silencer, in the exhaust manifold, there is a time when a so-called valve overlap occurs in which the intake valve and the exhaust valve are instantaneously opened during the four strokes of the engine. As a phenomenon of re-introduction into the cylinder occurs, a vacuum is instantaneously formed in the exhaust manifold, thereby forming a primary exhaust pressure which prevents exhaust gas discharge.

In addition, in the three-dimensional catalytic device as an air purifier, the flow rate of the exhaust gas is significantly reduced while passing through the fine vents of the honeycomb type exhaust gas purifier, thereby forming a secondary exhaust pressure. The third exhaust pressure is formed when the blemish is turned.

In this exhaust process, exhaust gas is exhausted at a pressure of 3 ~ 5kg / ㎠ and a temperature of 600 ℃, so silencer is necessary. Silencer is usually designed for 15 ~ 20 times the volume of exhaust. Due to the combustion gas of the engine is not discharged smoothly there is a closed end is reduced by 5-10% of the output.

Therefore, it can be seen that it is possible to improve the output of the engine and improve fuel efficiency by simply discharging the exhaust gas smoothly.

Various proposals are known in the art in order to smoothly discharge the exhaust gas as described above.

Korean Patent Laid-Open Publication No. 2000-56951 proposes an exhaust pipe of a car using air flow, which combines a streamlined exhaust port body with a tail pipe by using the air flow according to the driving of the car to pass through the streamlined body. The low pressure zone is formed according to the flow rate and the exhaust gas is rapidly sucked by the low pressure to assist the exhaust.

However, there is a structurally large and complicated disadvantage of attaching the streamlined body of the exhaust port to the vehicle, it is difficult to put practical use because the narrow exhaust passage only hinders the exhaust because it cannot induce fast air flow at the stop or low speed driving.

According to the tail pipe of the main silencer having the vortex generator of JP-A-1998-75223, the vortex vane is pivotally rotated by the exhaust gas in the middle of the tail pipe. However, this is rather difficult to use because it provides a resistance to disturb the flow of exhaust gas.

According to Utility Model Registration No. 99434, the vehicle exhaust gas exhaust device is provided with a bolt mounted at the end of the tail pipe, and a plurality of vortex forming blades are formed radially on the inner circumference of the pipe to vortex the exhaust gas to discharge efficiency. However, simply vortexing the exhaust gas is not enough to achieve rapid and smooth exhaust. As a result, the vortex of the fluid partially assists the exhaust in addition to the natural exhaust at the exhaust pressure. It is only to obtain, and the efficiency is extremely low.

In addition, according to the exhaust gas discharge device using the vortex of the patent registration No. 257874, the vortex generating duct having the vane to form the vortex by introducing external air into the front pipe of the muffler formed in the exhaust gas path and the throttle valve opening amount Including the sub-duct is built in the valve which is adjusted in proportion to the opening.

However, this forms a duct in which outside air flows into the front end pipe of the silencer to remove the exhaust noise, so the exhaust noise leaks into the duct, causing the noise to be severe, and the valve is opened a lot during acceleration, which causes the exhaust noise to be more severe. Since there is a closed end and the exhaust gas is discharged to the sub-duct having a weak air resistance compared to the inside of the silencer, there is a problem that the inflow air is resisted and practically difficult to use.

At the same time, the prior art is that the air resistance inside the muffler as it is introduced to the inlet side of the muffler, so that the air resistance inside the muffler is present as it is not useful to speed up the exhaust and the damper for controlling the outside air in conjunction with the engine throttle valve The complex structure and facilities are harmful, the outside air is introduced through the muffler, so foreign matter (dust, sand, etc.) contained in the outside air is deposited inside the muffler, which has the disadvantage of lowering the function of the muffler.

In order to solve the above problem, the present applicant has previously proposed an automobile exhaust port with Korean Patent Application No. 2002-13963 and Utility Model Registration No. 287763.

Both the former patent and the latter utility model have a structure that speeds up the flow rate by collecting exhaust air into the tailpipe for expanding the outdoor air according to the driving of the car.

That is, the exhaust gas of the exhaust pipe is rapidly discharged by collecting the outside air into the fallopian tube and increasing the air pressure passing through the small cross-sectional area.

These source inventions have had some beneficial advantages in improving output and fuel economy by realizing an increase in exhaust flow rate, but these proposals also have a slight effect when stopped or traveling at low speeds.

In addition, the present applicant, as in the Republic of Korea Patent Application No. 2004-13721, cuts one end in the tail pipe and spaces the fixed vanes bent inward to provide two places to create a fast exhaust air flow, and the outside air flowing in the reverse in the case of overlap It has been proposed to increase the engine power by discharging to the vane.

The present invention is proposed to obtain a more improved effect by improving the patent application 2004-13721.

The present invention has been made to improve the efficiency by improving the prior application technology of the applicant and the prior art as described above has the following objects.

The present invention makes the exhaust gas discharged through the silencer tail pipe to form a jet stream, the exhaust speed due to the venturi phenomenon, and circulates and discharges the inflow of outside air to accelerate the exhaust speed to achieve the exhaust gas emissions quickly To provide an exhaust port.

The present invention provides a vehicle exhaust port that can increase the output by preventing the overlap of the exhaust gas flow back into the engine by allowing the exhaust gas to be discharged back to the atmosphere in the middle of the tail pipe to accelerate the discharge of exhaust gas. will be.

The present invention is a structurally robust structure to significantly increase the durability and can be applied without changing the structure of the existing silencer to provide a highly compatible automotive exhaust vent.

The present invention reduces the backflow of exhaust gas to reduce the accumulation of combustion residues such as carbon, thereby extending the life of the engine and providing an automobile exhaust port that increases the life by maintaining various parts of the exhaust system such as an expensive soot purifier clean. will be.

The present invention to achieve the above object is to provide a streamlined first and second fixed vanes bent inwardly by cutting one end to the silencer end tail pipe of the vehicle, and to be spaced apart and opposed to each other, the first and second fixed vanes By enclosing the first and second fixed vanes are in communication with each other and the circulation exhaust port consisting of a tubular sealing body and the atmosphere is combined to cause a fast air flow to the exhaust end of the silencer.

1 is a cross-sectional view showing an automobile exhaust vent as a pre- filed prior art of the present inventors.

Figure 2 is a cross-sectional view as an embodiment of the present invention.

Figure 3 is a cross-sectional view as another embodiment of the present invention.

Figure 4 is a cross-sectional view as another modified embodiment of the present invention.

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

10: silencer 20: tail pipe

30: first fixed vane 40: second fixed vane

50: circulation exhaust port

Hereinafter, with reference to the accompanying drawings will be described in detail.

2 is shown a basic embodiment of the present invention.

This is a streamlined form of the first and second fixed vanes 30 and 40 which are bent inwardly by cutting one end into a tail pipe 20 formed at a rear end of a conventional silencer 10 provided in a path of exhaust gas discharged from an engine of an automobile. The first and second fixed vanes 30 and 40 communicate with the first and second fixed vanes 30 and 40 in a vehicle exhaust port spaced apart from each other by a predetermined distance and face each other, and are sealed to the outside atmosphere. And a circulation exhaust port 50 formed by welding 52 to the tail pipe.

The first and second fixed vanes 30 and 40 which are cut inwardly and inwardly are configured to extend the bending angle up to 45 degrees and the bending end portion to the centerline position of the tail pipe 20.

The operation of the present invention as described above will be described in more detail.

When the circulating exhaust port 50 of the present invention is implemented in the tail pipe 20, when the exhaust gas discharged through a normal process by driving the engine flows into the silencer 10, noise is generated in the silencer expansion chamber and then discharged.

First, the operation according to the applicant's prior application patent shown in FIG. 1 shows that the combusted exhaust gas rapidly moves a narrow cross-sectional area by a venturi phenomenon while the passage air flows downward by the bent surface of the first fixed vane 30. And, while moving upward again while hitting the bent surface of the second fixed vane 40, the flow rate forms a jet stream, and at this time, the outside air is sucked and accelerated through the opening of the second fixed vane 40 to the high pressure side of the bet. This is achieved while quick exhaustion is realized.

At this time, while the low pressure is generated on the opening side of the first fixed vane 30, the backflow caused by the backflow phenomenon of the exhaust gas generated when the engine overlaps is exhausted to the outside air through the opening of the first fixed vane 30. It works to remove the backflow gas so as not to cause an exhaust failure of the exhaust system through the silencer side.

As described above, the exhaust gas passing through the tail pipe 20 passes through the first and second fixed vanes 30 and 40 in which the diameter of the tube is narrowed, and the flow rate rapidly increases due to the venturi phenomenon. In the engine overlapping period, which accelerates and induces rapid exhaustion, the air flow is exhausted through the penetrating portion of the first fixed vane 30, which is a low pressure region, and the section from the exhaust manifold to the silencer is temporarily negative. Does not interfere with engine intake.

In the present invention, the air flow is increased and accelerated in the reverse direction by the circulation exhaust port 50 which covers the first and second fixed vanes 30 and 40 and covers the tail pipe 20 so as to be sealed with the external atmosphere.

That is, compared to the first fixed vane 30 positioned inside the tapepipe 20 through which exhaust gas is discharged, the second fixed vane 40 is formed closer to the external atmosphere, and the first and second fixed vanes 30, The outer diameter of the penetrating portion of the tubular body 40 is formed in a hermetically sealed state, which is cut off from the outside by the tubular body 52 of the circulating exhaust port, and the air flow is made in the opposite direction to the aforementioned patent application.

Therefore, the acceleration of the exhaust gas exhaust air flow is the same as in the prior application patent, but the flow of air flow is reversed when the inflow of the outside air and the engine overlaps, the inflow of the outside air is made through the second fixed vane 40, By forming the low-pressure region generated by the venturi phenomenon of the first fixed vane 30, the first fixed vane 30 serves to accelerate the discharge speed of the exhaust gas through the first fixed vane 30.

As a result, while the inflow of outside air is sucked by the low pressure of the first fixed vane 30 side, the high-pressure airflow sucked through the second fixed vane 40 side is accelerated and discharged to the first fixed vane side, resulting in the pushing and pulling action. Exhaust has the effect of achieving a faster exhaust than the previous prior invention.

Therefore, the exhaust gas is discharged more rapidly to the silencer pipe from which the exhaust gas is discharged, and at the same time, the exhaust gas backflow when the engine overlaps is sucked and discharged in the circulation exhaust port 50 and is immediately discharged from the tail pipe. It prevents the obstruction of exhaust flow by backflow and smooth exhaust, which increases the output and saves fuel and smoothly discharges the combustion foreign substances remaining in the exhaust system to protect the expensive equipment of the exhaust system. It works to lengthen.

The present invention to achieve the action according to the structure as described above may be modified as shown in Figs.

That is, according to the design of FIG. 3, this includes a tail pipe 20 having the first and second fixed vanes 30 and 40 described above, and a structure including a structure in which the fixed vanes 30 and 40 are surrounded by the tubular body 52. It is possible to form a plurality of tail pipes by forming a plurality of exhaust ports 50 in plurality and connected in parallel so as to branch to the silencer exhaust stage, which makes the exhaust port of the car smoother to exhaust and achieve aesthetic improvement,

In the case of the design of FIG. 4, a circulating exhaust port 50 including a tail pipe 20, in which the first and second fixed vanes 30 and 40 are formed, and a structure in which the fixed vanes 30 and 40 are wrapped with a tubular body 52. ) Is configured to be coupled to the exhaust end of the silencer 10 by a clamp 54 to be easily coupled to the exhaust port end of a general vehicle.

As a result of experiment using the circulating exhaust port of the present invention as described above, the pressure gauge was installed on the exhaust manifold outlet side of the 1500cc class automobile and the exhaust pressure was measured. The maximum pressure was 0.5 (KPs) at 2500rpm. In the same experiment without applying the design, the exhaust pressure was reduced to 1/2 compared to forming an exhaust pressure of up to 1 (KPs).

The circulating exhaust port may be formed by bending and welding a tubular body so as to communicate the first and second fixed vanes, and the internal volume of the circulating exhaust port is not a large consideration, and may be configured to achieve air flow by only communicating the two fixed vanes.

According to the present invention as described in detail above, the exhaust gas discharged through the silencer tail pipe from which the exhaust gas is discharged together with the outside air in which the exhaust gas is rapidly introduced by the formation of the venturi phenomenon and the jet stream has its exhaust speed. Increased exhaust gas can be achieved quickly, improving acceleration and climbing ability.Emission of exhaust gas is returned to the engine by allowing the outside air to circulate in the middle of the tail pipe to be discharged to the atmosphere. The output can be increased by preventing the overlapping, and the structure is simple and robust. The durability is remarkably increased and it can be applied without changing the structure of the existing silencer. To reduce deposition of combustion residues such as carbon It is an excellent design that has various effects such as extending the engine life and maintaining the various parts of the exhaust system such as an expensive soot purifier to increase the life.

On the other hand, although the main description of the present invention is intended for the exhaust port of the vehicle, it is applicable to the tail pipe of all the silencers using the internal combustion engine, and such modifications are extremely easy to be included in the scope of the claims to be described below. Belong to the scope.

Claims (3)

An exhaust port comprising a normal silencer 10 and a tail pipe 20 provided in a path of exhaust gas discharged from an engine of an automobile, wherein the first and second fixed vanes are cut inward by bending one end to the tail pipe 20. The first and second fixed vanes 30 and 40 are formed to have a streamline shape, and the first and second fixed vanes 30 and 40 are spaced apart from each other and face each other. The first and second fixed vanes 30 and 40 communicate with each other. An exhaust port for automobiles comprising a circulation exhaust port (50) formed by welding a tubular body (52) sealed with air to a tail pipe. The exhaust vent of claim 1, wherein the exhaust port includes a tail pipe 20 in which the first and second fixed vanes 30 and 40 are formed and a structure in which the fixed vanes 30 and 40 are surrounded by the tubular body 52. A plurality of exhaust pipes for automobiles, characterized in that the plurality of tail pipes are formed in a plurality of and connected in parallel to branch to the silencer exhaust stage. The exhaust vent of claim 1, wherein the exhaust port includes a tail pipe 20 having the first and second fixed vanes 30 and 40 and a structure in which the fixed vanes 30 and 40 are wrapped with a tubular body 52. 50 is separated and constituted by fastening and coupling with the clamp 54 to the exhaust end of the silencer (10).