KR19980063116U - Trap Shear Pipe Structure of Diesel Fuel Filter - Google Patents

Abstract

The present invention relates to a diesel fuel filtering device for filtering particulate matter in exhaust gas discharged from a diesel vehicle and burning the filtered particulate matter, and more particularly, the temperature of exhaust gas discharged when the diesel vehicle runs and stops. The present invention relates to a trap shear pipe structure of a diesel fuel filter device, which has a structure capable of improving the durability and combustion performance of the filter material by narrowing the initial temperature range of the filter medium when the trap is regenerated to minimize the fluctuation range. In the trap shear pipe structure, a plurality of cooling fins are formed along the outer surface longitudinal direction of the trap shear pipe.

Description

Trap Shear Pipe Structure of Diesel Fuel Filter

The present invention relates to a diesel fuel filtering device for filtering particulate matter in exhaust gas discharged from a diesel vehicle and burning the filtered particulate matter, and more particularly, the temperature of exhaust gas discharged when the diesel vehicle runs and stops. The present invention relates to a trap shear pipe structure of a diesel fuel filter device having a structure capable of improving the durability and combustion performance of the filter medium by narrowing the initial temperature range of the filter medium during the regeneration of the trap by minimizing the fluctuation range.

1 is a schematic diagram showing a conventional trap shear pipe structure, Figure 2 is a graph illustrating a temperature fluctuation range of the filter medium according to the vehicle driving when the conventional trap shear pipe structure is applied.

Referring to FIGS. 1 and 2, in general, the diesel particulate filter traps exhaust gas discharged from the engine (a) by connecting the trap shear pipe (c) in communication between the engine (a) and the trap (b). b) flows into the filter to filter soot. When an appropriate amount of soot accumulates in the trap (b), the flow path of the exhaust gas is switched, and the exhaust gas is filtered by another trap. After the regeneration, the soot is filtered again to alternately filter and regenerate.

However, in the conventional trap shear pipe structure as described above, since the high temperature exhaust gas discharged from the engine flows directly into the trap and is filtered by the filter medium, the temperature of the exhaust gas becomes very high when the engine of the vehicle is running, and the exhaust gas when the engine is stopped. Due to the large fluctuation range of the temperature such that the temperature decreases relatively, it is very difficult to control the regeneration temperature at the time of regeneration of the trap to realize full regeneration of the filter medium without damaging the filter medium.

1 is a schematic diagram showing a trap shear pipe structure of a conventional diesel fuel filter device.

2 is a graph illustrating a temperature fluctuation range of a filter medium for driving a vehicle according to a conventional trap shear pipe structure.

Figure 3 is a schematic diagram showing the trap shear pipe structure of the diesel fuel filter device according to the present invention.

Figure 4 is a perspective view showing the structure of the trap shear pipe according to the present invention.

Figure 5 is a graph illustrating the temperature fluctuation range of the filter medium for driving the vehicle according to the trap shear pipe structure of the present invention.

♠ Explanation of symbols on the main parts of the drawing ♠

10: Trap shear pipe 11: cooling fin

12: Engine 13: Trap

The present invention has been made to overcome the above problems, the object of the present invention is to cool the temperature of the exhaust gas of the engine flowing into the trap through the trap shear pipe at the predetermined temperature before entering into the trap when the vehicle running and stopping The present invention seeks to provide a trap shear pipe structure of a diesel soot filter that can facilitate the complete safe regeneration of the filter medium while minimizing the temperature fluctuation range of the filter medium during regeneration of the trap.

The purpose of the present invention is the trap shear pipe structure of the diesel fuel filter device, by the trap shear pipe structure of the diesel fuel filter device characterized in that a plurality of cooling fins are formed along the longitudinal direction of the outer surface of the trap shear pipe. Can be achieved.

Hereinafter, with reference to the accompanying drawings will be described in detail the configuration of the subject innovation.

3 is a schematic view showing the trap shear pipe structure of the diesel fuel filter device according to the present invention, Figure 4 is a perspective view showing a trap shear pipe according to the present invention, Figure 5 is a trap shear according to the present invention It is a graph which illustrates the temperature fluctuation range in a filter medium at the time of regeneration of a trap when a pipe is attached.

3 to 5, the trap shear pipe structure of the diesel fuel filter device according to the present invention includes a trap shear pipe 10 and a cooling fin 11.

The trap shear pipe 10 is connected to the engine 12 and the trap 13 in communication with each other to allow the exhaust gas discharged from the engine 12 into the trap 13 to filter the smoke, the outer surface A plurality of the cooling fins 11 are formed at predetermined intervals along the longitudinal direction.

The cooling fin 11 is preferably a metal plate having a predetermined size and excellent in thermal conductivity.

The trap shear pipe structure of the diesel fuel filter device according to the present invention having the configuration as described above, because the wind hits the cooling fins 11 to remove heat when the vehicle is traveling, so that the trap shear pipe 10 inside Since the exhaust gas flowing into the trap 13 is cooled by the high temperature exhaust gas passing through, the temperature range is not large, and since the wind is not generated when the vehicle is stopped, the trap 13 through the trap shear pipe 10. Since the exhaust gas flowing into the trap 13 is not cooled and is filtered, it is discharged from the engine 12 when the vehicle is driven and stopped, and the temperature fluctuation range of the exhaust gas flowing into the trap 13 is as shown in FIG. 5. Will be reduced. That is, the high temperature exhaust gas discharged when the vehicle is running is cooled and flows into the trap 13, and the low temperature exhaust gas discharged when the vehicle is stopped is introduced into the trap 13 without cooling, thereby substantially entering the trap 13. As the exhaust gas temperature decreases as the maximum value decreases, the temperature fluctuation width decreases, so that the temperature fluctuation width of the filter medium also decreases, so that the regeneration temperature can be easily adjusted when the filter medium is regenerated. It can be.

As is apparent from the above, the trap shear pipe structure of the diesel fuel filter device according to the present invention cools exhaust gas having a severe temperature change at the time of driving and stopping of the vehicle only at a high temperature and flows into the trap to reduce the temperature fluctuation range of the exhaust gas. By minimizing the regeneration temperature control of the filter medium by minimizing it has the effect of performing a complete safe regeneration of the filter medium.

Claims (2)

A trap shear pipe structure of a diesel fuel filter device, characterized in that a plurality of cooling fins (11) are formed along the outer surface longitudinal direction of the trap shear pipe (11). The trap shear pipe structure as claimed in claim 1, wherein the cooling fins (11) are made of a metal plate having a predetermined size and made of a metal having excellent thermal conductivity.