TWM515025U - Vehicle exhaust gas purification processing improvement device - Google Patents

Description

Vehicle exhaust purification treatment improvement device

The present invention relates to a device capable of more effectively purifying exhaust gas discharged from an exhaust pipe of a vehicle diesel engine and removing carbon deposits of a filtering device to maintain a smooth discharge of exhaust gas from a diesel engine.

Diesel engine vehicles convert the chemical energy of the fuel into heat energy and power output in sequence through the combustion reaction in the cylinder after the diesel engine or the alternative fuel is ignited by compression ignition. Therefore, various gases, liquids, and Solid pollutants, mainly granules (PM), smoke, nitrogen oxides (NO _x ), etc. It also emits gaseous pollutants such as carbon monoxide (CO), sulfur oxides (SO _x ), carbon dioxide (CO ₂ ), and hydrocarbons (HC), causing global environmental damage such as ozone depletion, acid rain, and greenhouse effect. Destruction problems also cause harm to human health and are therefore of concern to the public. For example, the formation of nitric acid by nitrogen oxides produces acid rain, which also destroys the ozone layer and acts as a photochemical smog with sunlight. Particles or black smoke may contain polycyclic aromatic hydrocarbons (PAHs) or metal compounds. Causes lung, trachea, respiratory tract and other diseases. According to the national regional air pollution emissions database TED 4.2 version of the conjecture data show that accounting for 3% of the number of motor vehicle diesel emissions from all mobile sources of 46% PM and 51% NO _x, in particular, the national passenger and freight operators almost all use Diesel vehicles are transportation vehicles. Therefore, how to prevent diesel engine exhaust pollution from improving the air quality by prevention technology or control strategy is an important issue today.

The Republic of China No. 103205046 provides a "smoke exhaust purification treatment device" for improving the aforementioned problems, and has a structure in which a combustion unit and a filter unit are sequentially disposed in the direction from the intake end to the outlet end of the exhaust pipe. And the combustion unit is provided with a cone cover that can guide the gas to form a cyclone; when the exhaust gas passes through the combustion unit, the exhaust gas is forcibly formed into a cyclone through the cone cover, and an appropriate amount of air and atomized fuel are injected into the cone cover. Mixing, and immediately heating and igniting with the electric heating rod to completely ignite the exhaust gas forming the turbulent turbulence, and the exhausted exhaust gas flow is filtered through the filtering unit and then discharged; the exhaust end of the filtering unit may be provided with a flameproof unit. It is used to block the flame that is ejected, and at the same time, the flame can be traced back to the secondary combustion of the exhaust gas to remove the carbon accumulated in the filter unit to maintain the smooth discharge of the diesel engine exhaust gas.

The main purpose of the present invention is to solve the conventional diesel engine vehicle in which a filter unit is installed in an exhaust pipe, and the device for burning the surface area of the filter unit by raising the operating temperature of the engine may be due to the driving environment of the vehicle. Unlike the conditions and the driver's habits, the engine speed cannot be increased, so that the engine operating temperature cannot be raised, so that the carbon deposit on the surface of the filter core cannot be burned smoothly, which still causes carbon deposition, affecting the exhaust gas and the performance of the diesel engine. The problem.

A further object of the present invention is to provide an improved apparatus which is more efficient in purifying exhaust gas than the patent No. 103205046.

The main feature of the present invention is that a combustion unit and a filter unit are sequentially disposed in the direction from the intake end to the outlet end of the exhaust pipe, and the combustion unit is provided with a cone cover for allowing the exhaust gas to stay for a long time; When passing through the combustion unit, the exhaust gas is concentrated and matched via a cone The baffle keeps the exhaust gas for a long time, and mixes the appropriate amount of air with the atomized fuel into the conical cover, and then immediately ignites with the ignition device to completely burn the exhaust gas, and the exhausted exhaust gas flows through the filtering unit. After filtering, it is discharged; the flame-extinguishing unit of the filtering unit can be provided with a flame-proof unit for blocking the flame emitted, and at the same time, the flame can be traced back to the secondary combustion of the exhaust gas to remove the carbon accumulated in the filtering unit for maintenance. The diesel engine emits exhaust gas smoothly.

The technical means for the combustion unit is provided with an inner cavity in which a conical cover is provided, the conical cover has a small diameter end and an opposite large diameter end, and the large diameter end is connected with a circle. The cylinder cover faces the air inlet end, and the wall surface of the cone cover is provided with a plurality of through holes for inner and outer sides, wherein the cylinder cover is provided with a fuel injection nozzle and an air tube The hood is provided with an ignition device, and the small diameter end of the cone is provided with a stop plate corresponding to the axial direction thereof, so that there is a space between the stop plate and the small diameter end; After the exhaust gas enters the cone cover from the large diameter end, the exhaust gas is concentrated, and the atomized fuel injected into the cone cover is mixed with an appropriate amount of air, and then ignited by the ignition device to form a turbulent exhaust gas from the cone cover. The small-diameter end is discharged, and the exhaust gas discharged from the small-diameter end is blocked by a stop plate to appropriately lengthen the time that the exhaust gas stays in the cone cover, so that the exhaust gas is fully burned, and the generated high heat is discharged to the filter unit to filter The unit removes carbon deposits.

The filter unit of the present invention has one end connected to the small diameter end of the cone cover of the combustion unit, and the filter unit has at least one filter core.

In the present invention, at least one through-hole can be provided in the outer wall of the combustion unit, so that the worker can view the endoscope through the inner-view hole into the combustion unit.

The present invention may be provided with a first disassembly port corresponding to the position of the injector group and a second disassembly port corresponding to the position of the ignition device on the outer wall of the combustion unit, when the first disassembly It is convenient to repair the injector group when the port is opened, and it is convenient to repair the ignition device when the second disassembly port is opened.

The creation may further provide a flame-proof unit at the exhaust end of the filter unit, and the flame-proof unit blocks the flame that may still be ejected after passing through the filter unit, and at the same time returns the flame to the filter unit for secondary combustion to improve the filter unit. The carbon deposit of the filter core.

The technical means of the flame-proof unit of the present invention provides a mesh disposed at the exhaust end of the filter unit, and a baffle is disposed in the center of the mesh, and the flame is blocked by the baffle and the flame is traced back After the exhaust gas is subjected to secondary combustion, the exhaust gas is discharged through the mesh.

1‧‧‧Exhaust pipe

11‧‧‧ intake end

2‧‧‧burning unit

21‧‧‧ lumen

22‧‧‧Insight hole

3‧‧‧ cone cover

30‧‧‧Cylinder cover

31‧‧‧ hole

32‧‧‧Baffle

33‧‧‧Support frame

4‧‧‧Filter unit

41‧‧‧ Filter

5‧‧‧Exhaust end

50‧‧‧ Flameproof unit

51‧‧‧ mesh

52‧‧‧Baffle

6‧‧‧Injector group

61‧‧‧fuel atomizing nozzle

62‧‧‧ air tube

63‧‧‧First disassembly

7‧‧‧Ignition device

71‧‧‧Second disassembly

The first figure is a schematic front cross-sectional view showing the improved device for purifying smoke purification treatment of the present vehicle; the second figure is a schematic plan view showing the front view of the improved device for purifying the smoke of the present vehicle; and the third figure is showing the vehicle row of the original creation A side plan view of a smoke purification treatment improvement device.

The implementation of the present invention will be described in more detail below with reference to the drawings and component symbols, so that those skilled in the art can implement the present specification after studying the present specification.

As shown in the first to third figures, the preferred embodiment of the vehicle exhaust purification treatment device provided by the present invention comprises a combustion unit 2 and a filtration unit 4 arranged in sequence; wherein the combustion unit 2 is Connected to the intake end 11 of the diesel engine exhaust pipe 1; in other words, the combustion unit 2 and the filter unit 4 are sequentially disposed from the intake end 11 to the outlet end 5 of the exhaust pipe 1.

The combustion unit 2 of the present invention has a cavity 21, and a cavity cover 3 is disposed in the cavity 21, the cone cover 3 has a small diameter end and an opposite large diameter end, wherein a large diameter end is connected with a circle The cover 30 is facing the intake end 11, and a proper space is reserved between the outer diameter of the cylindrical cover 30 and the inner diameter of the large diameter end, and the outer diameter of the large diameter end of the tapered cover 3 is sealed to the inner cavity 21. The inner diameter and the sealing method can be completed by welding. A stop plate 32 is mounted on the outer side of the tapered cover 3 by a support frame 33, so that the stop plate 32 axially corresponds to the small-diameter end, and between the stop plate 32 and the small-diameter end Keep a space. An ignition device 7 is disposed in the cone cover 3. The ignition device 7 can be an electric heating rod and is electrically connected to a controller for controlling the ignition time.

In addition, an injector group 6 is disposed in the cylindrical cover 30. The injector group 6 includes a fuel atomizing nozzle 61 and an air tube 62. The air tube 62 is connected to a compressed air source and is in the tube. The air valve (not shown) is used to control the amount of compressed air injected into the cone cover 3 through the air tube 62. The fuel atomizing nozzle 61 is connected to a pump tank by a pipeline (not shown) And a fuel control valve is disposed in the pipeline, and the amount of atomized discharge injected into the cone cover 3 via the fuel atomizing nozzle 61 is controlled by the fuel control valve.

One end of the filter unit 4 is connected to the small diameter end of the cone cover 3 of the combustion unit 2, and the filter unit 4 has at least one filter core 41.

In the preferred embodiment of the present invention, a flame-proof unit 50 is further disposed at the exhaust end of the filter unit 4; the flame-proof unit 50 includes a mesh 51, and a baffle 52 is disposed at the center of the mesh 51.

In the present invention, the combustion unit 2 does not operate, and the exhaust gas discharged from the diesel engine directly passes through the cylindrical cover 30 of the combustion unit 2 and the cone cover 3, and then passes through each The hole 31 and the small diameter end are concentrated, and the exhaust gas passing through the small diameter end is blocked by the stopper baffle 32, thereby prolonging the time of the exhaust gas in the cone cover 3, and filtering through the filter core 41 of the filter unit 4, The sheet 51 and the outlet end 5 are discharged.

When used for a period of time, the filter core 41 will be exhausted due to carbon deposit blockage. At this time, the operation control system can command the pressure pump (not shown) in the pump fuel tank to move the fuel to the pipeline to the fuel tank. The fuel control valve controls the start time of the fuel control valve to output the fuel to the fuel atomizing nozzle 61 to eject the oil and gas atomized into fine molecules; at the same time, the compressed air source delivers the high pressure air to the air valve, and the air valve controls the output. The amount of air is mixed with the atomized oil and gas, and then the controller controls the ignition device 7 to be electrically heated, igniting the atomized oil and gas, completely igniting the exhaust gas forming the turbulent flow, and the exhaust gas flow after combustion is passed through the cone cover 3 Each of the holes 31 and the small-diameter end are discharged, and the portion of the exhaust gas is blocked by the stop plate 32 to prolong the time of staying in the cone cover 3, thereby allowing the exhaust gas to be more fully burned, passing through the stop plate 32. The exhaust gas passes through the filter core 41, and the carbon deposit attached to the filter core 41 is burned and removed by the high-temperature exhaust gas; when the carbon deposit is removed to a certain extent, the filter core 41 returns to the unobstructed state. The exhaust gas can be smoothly discharged.

Furthermore, the present invention also prevents the flame from being ejected from the gas outlet end 5 through the high-temperature exhaust gas of the filter core 41 by the flame-proof unit described above; when the flame is ejected from the filter core 41, the flame is blocked by the baffle 52, thereby causing the flame to trace back. The filter core 41 is subjected to secondary combustion of the exhaust gas and the carbon deposit, and the exhaust gas after the full combustion is discharged through the mesh 51 and the gas outlet end 5.

On the other hand, the present invention can provide at least one through-hole 22 in the outer wall of the combustion unit 2, so that the worker can extend the endoscope through the inner hole 22 into the combustion unit 2 to observe that the exhaust gas is burned. Case.

Moreover, the present invention can also provide a first detaching opening 63 corresponding to the position of the injector group 6 and a second detaching opening 71 corresponding to the position of the igniter 7 in the outer wall of the combustion unit 2, when the first detaching port 63 It is convenient to carry out maintenance on the injector group 6 when it is opened, when the second demolition When the discharge port 71 is opened, the ignition device 7 can be easily repaired.

The above description is only for the purpose of explaining the preferred embodiment of the present invention, and is not intended to impose any limitation on the present creation, so that any modifications or changes to the creation made in the same creative spirit are made. , should still be included in the scope of protection of this creative intent.

1‧‧‧Exhaust pipe

11‧‧‧ intake end

2‧‧‧burning unit

21‧‧‧ lumen

22‧‧‧Insight hole

3‧‧‧ cone cover

30‧‧‧Cylinder cover

31‧‧‧ hole

32‧‧‧Baffle

33‧‧‧Support frame

4‧‧‧Filter unit

41‧‧‧ Filter

5‧‧‧Exhaust end

50‧‧‧ Flameproof unit

51‧‧‧ mesh

52‧‧‧Baffle

6‧‧‧Injector group

61‧‧‧fuel atomizing nozzle

62‧‧‧ air tube

63‧‧‧First disassembly

7‧‧‧Ignition device

71‧‧‧Second disassembly

Claims (3)

A vehicle exhaust purification treatment improvement device is provided in the order of an intake end to an outlet end of an exhaust pipe: a combustion unit having an inner cavity, wherein the inner cavity is provided with a cone cover, the cone The cover has a small diameter end and an opposite large diameter end. The large diameter end is connected to a cylindrical cover and faces the air inlet end. The wall surface of the cone cover is provided with a plurality of through holes for the inner and outer sides, wherein The cylinder cover is provided with a fuel injector group including a fuel atomizing nozzle and an air tube. The cone cover is provided with an ignition device, and the small diameter end of the cone cover is provided with a corresponding axial direction. a baffle having a space between the stop plate and the small diameter end; and a filter unit having one end connected to the small diameter end of the cone cover of the combustion unit, the filter unit having at least one filter element. The vehicle exhaust purification treatment improvement device according to claim 1, wherein the casing wall of the combustion unit is provided with at least one through-hole. The vehicle exhaust purification treatment improvement device according to claim 1, wherein the casing wall of the combustion unit is provided with a first disassembly port corresponding to the position of the injector group, and a position corresponding to the position of the ignition device. Second, remove the mouth.