Novel post-treatment preposed device

Abstract

A novel post-treatment preposed device comprises an exhaust connecting pipe, one end of the exhaust connecting pipe is connected with an engine, the other end of the exhaust connecting pipe is connected with a post-treatment device, two groups of grid trays are arranged in the exhaust connecting pipe, the two groups of grid trays are externally connected with a battery pack, one group of grid trays is connected with the positive electrode of the battery pack, and the other group of grid trays is connected with the negative electrode of the battery pack. The other group of grid plates is connected with the positive electrode of the battery pack; and sleeves are arranged at the end parts, positioned on the exhaust connecting pipes, of the grid plates. According to the novel post-treatment preposed device, ash in exhaust gas emission of an engine can be separated from a DPF device through chemical reaction, and gelatinization of the ash and soot in the DPF is reduced, so that the phenomenon that the DPF is blocked by gelatinized substances is avoided, the service life of a post-treatment system can be effectively prolonged, DOC silicon poisoning is prevented, and the service life of the post-treatment system is prolonged. Finally, the service life of the whole post-treatment system is prolonged; meanwhile, the torque limiting problem of the whole vehicle can be eliminated, oil consumption and exhaust back pressure of the whole vehicle are reduced, and the device has the advantages of simple structure, low manufacturing cost, high cost performance and the like.

Description

Technical Field

[0001] The invention relates to the technical field of engineering machinery, in particular to a novel post-processing pre-position device. Background Art

[0002] The fuel currently on the market contains silicon. After combustion, the deposits soak into the DOC coating, which will cause the exhaust gas to be unable to react chemically with the carrier, resulting in a decrease in conversion efficiency, and then a system failure is reported. Because silicon compounds form deposits, they cannot be removed by combustion, thermal management or physical cleaning methods, so silicon poisoning is an irreversible damage. Based on the above mechanism, after silicon poisoning occurs, it can only be repaired by replacing the DOC module. Ultimately, the life of the after-treatment system is reduced, the exhaust resistance increases, and the alarm system starts to start, thereby limiting the output torque of the engine. As the conversion efficiency of soot particles in the exhaust gas decreases, the fuel consumption of the entire vehicle also increases. The existing engine after-treatment system adopts route one: 1. Turbocharger + electronic control + external EGR (exhaust gas recirculation) + DOC (diesel oxidation catalyst) + POC (particulate oxidation catalytic converter); 2. Turbocharger + electronic control + external EGR (exhaust gas recirculation) + DPF (particulate matter trap); Route two: turbocharger + electronic control + high-pressure common rail + DOC (diesel oxidation catalyst) + DPF (particulate matter trap) + SCR (selective catalytic converter);

[0003] Both of these technical routes require the installation of DOC (diesel oxidation catalyst), so the current engine after-treatment systems all have the problem of DOC (diesel oxidation catalyst) poisoning. Summary of the invention

[0004] The technical problem to be solved by the present invention is to overcome the deficiencies of the above-mentioned prior art and provide a new post-processing pre-device with simple structure and good effect.

[0005] The present invention is implemented by the following technical scheme: a novel post-processing pre-device, including an exhaust connecting pipe, one end of which is connected to the engine, and the other end of which is connected to the post-processing device, two groups of grid plates are arranged inside the exhaust connecting pipe, and the two groups of grid plates are externally connected to a battery pack, one group of grid plates is connected to the positive electrode of the battery pack, and the other group of grid plates is connected to the negative electrode of the battery pack, and the grid plates are located at the end of the exhaust connecting pipe and are provided with a ceramic sleeve for insulation.

[0006] It is further provided that: the exhaust connecting pipe is arranged between the engine and the post-processing device, and the exhaust connecting pipe is connected to the exhaust gas outlet end of the engine.

[0007] The exhaust connection pipe is sealed and connected to the engine and the post-processing device through a V-shaped clamp. A grid plate is provided at each end of the exhaust connection pipe, and the two grid plates are connected to the positive and negative electrodes of the battery pack respectively.

[0008] The grid plate includes a porous grid portion and a connecting portion. The porous grid portion is arranged in the exhaust connecting pipe. The connecting portion passes through an insulating ceramic sleeve in the exhaust connecting pipe and is connected to the battery pack through a wire.

[0009] The battery pack is two 12V DC batteries.

[0010] The present invention has the following advantages: a novel post-processing pre-device of the present invention can separate the ash in the engine exhaust emissions from the DPF device through a chemical reaction, thereby reducing the gelling of ash and carbon smoke in the DPF, thereby avoiding the gelling substances from clogging the DPF, and can effectively extend the life of the post-processing system, prevent DOC silicon poisoning, and ultimately extend the life of the entire post-processing system; at the same time, it can also eliminate the problem of vehicle torque limitation, reduce vehicle fuel consumption and exhaust back pressure, and has the advantages of simple structure, low manufacturing cost, and high cost performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The accompanying drawings are part of the present invention and are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention, but do not constitute an improper limitation of the present invention. Obviously, the accompanying drawings described below are only some embodiments. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without creative work.

[0012] In the attached picture:

[0013] Figure 1 and Figure 2 It is a schematic diagram of the overall structure of the present invention;

[0014] Figure 3 is a front view of the exhaust connecting pipe of the present invention;

[0015] Figure 4 yes Figure 3 Left view of

[0016] Figure 5 yes Figure 3 Right view of;

[0017] Figure 6 It is a structural schematic diagram of the grid plate of the present invention;

[0018] Figure 7 It is a structural schematic diagram of the sleeve of the present invention;

[0019] Figure 8It is a schematic diagram of the present invention.

[0020] In the figure: 1, exhaust connection pipe, 2, battery pack, 3, wire, 4, grid plate, 5, sleeve. It should be noted that these drawings and text descriptions are not intended to limit the scope of the present invention in any way, but to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention but are not used to limit the scope of the present invention.

[0022] In the description of the present invention, it should be noted that the directions or positional relationships indicated by terms such as “upper”, “lower”, “front”, “back”, “left”, “right”, “vertical”, “inside” and “outside” are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0023] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] like Figures 1 to 8A novel post-processing pre-device is shown, comprising an exhaust connecting pipe 1, one end of which is connected to the engine, and the other end of which is connected to the post-processing device. Two groups of grid plates 4 are arranged inside the exhaust connecting pipe 1, and the two groups of grid plates 4 are externally connected to a battery pack 2, one group of grid plates 4 is connected to the positive electrode of the battery pack 2, and the other group of grid plates 4 is connected to the negative electrode of the battery pack 2, and a sleeve 5 is arranged at the end of the grid plate 4 located at the exhaust connecting pipe 1. The exhaust connecting pipe 1 is arranged between the engine and the post-processing device, and the exhaust connecting pipe 1 is connected to the exhaust gas outlet end of the engine. The novel post-processing pre-device of the present invention is arranged between the engine and the processing device, and the post-processing pre-device includes an exhaust connecting pipe, one end of the exhaust connecting pipe is the engine exhaust gas inlet end, which is used to connect the engine exhaust gas outlet end, and the other end of the exhaust connecting pipe is connected to the post-processing device. The engine exhaust gas passes through the exhaust connecting pipe and then enters the post-processing device, wherein two groups of grid plates are arranged in the exhaust connecting pipe, and the two groups of grid plates are respectively located at the two ends of the exhaust connecting pipe. At the same time, the two groups of grid plates are connected to a battery pack arranged outside the exhaust connecting pipe, one group of grid plates is connected to the positive electrode of the battery pack, and the other group of grid plates is connected to the negative electrode of the battery pack. The battery pack extends the positive and negative electrodes to the grid plates inside the exhaust connecting pipe through electric wires. When the engine exhaust gas enters the exhaust connecting pipe, under the action of the positive and negative electrodes of the battery pack, the main positive ions of the ash in the exhaust gas are adsorbed onto the cathode plate connected to the negative electrode of the battery, so that the ash in the exhaust is separated from the post-processing system, and the deposition of silicon compounds on the DOC is avoided.

[0025] like Figures 1 to 5 The exhaust connection pipe 1 of the present invention is sealedly connected to the engine and the aftertreatment device through a V-shaped clamp. The exhaust connection pipe of the present invention is sealedly connected to the engine exhaust outlet and the aftertreatment inlet through a V-shaped clamp, which ensures the reliability of the connection.

[0026] like Figures 1 to 7 A novel post-treatment pre-position device is shown, wherein a grid plate 4 is provided at each end of the exhaust connection pipe 1, and the two grid plates 4 are connected to the positive and negative electrodes of the battery pack 2 respectively. The grid plate 4 includes a porous grid portion and a connecting portion, wherein the porous grid portion is arranged in the exhaust connection pipe 1, and the connecting portion passes through the insulating sleeve 5 in the exhaust connection pipe 1 and is connected to the battery pack 2 through the wire 3. Each group of grid plates of the present invention can adopt one grid plate, or multiple groups of grid plates can be used in combination, wherein the grid plate includes two parts, a grid portion with multiple holes and a connecting portion connected to the positive and negative electrodes of the battery pack, the grid portion is arranged in the exhaust connection pipe, and is used to contact the engine exhaust gas, and is used as a place for reacting with the main particles in the ash inside the exhaust connection pipe, the connecting portion passes through the insulating sleeve in the through hole of the exhaust connection pipe, and is connected to the battery pack through the wire, and the sleeve is made of insulating ceramic, which can better protect the connection and play an insulating role.

[0027] like Figure 1 to Figure 2 The battery pack 2 is composed of two 12V DC batteries, which provide the electrons required for the chemical reaction of the whole device.

[0028] like Figures 1 to 3 and Figure 7 A novel post-processing pre-mounted device is shown, wherein the sleeve 5 is made of insulating ceramic. Two through holes are reserved at both ends of the exhaust connection pipe of the present invention, and insulating sleeves are installed in the through holes. The ends of the two grid plates pass through the insulating sleeves respectively, and then the ends of the grid plates extending out of the sleeves are connected to the positive and negative electrodes of the battery pack respectively through wires.

[0029] like Figure 8 As shown, according to the collision theory in chemical reactions, under the high temperature and high pressure combustion environment of the engine, the substances in the cylinder will collide with each other due to the high-speed Brownian motion between molecules and atoms, thereby generating a large number of ions and radicals. Similarly, silicon added to the fuel, some metal elements and inorganic salts added to the engine oil and lubricating oil, also become free ions due to collisions. Among them, inorganic salts include sulfates, etc., and metal elements include zinc, phosphorus, calcium, magnesium, iron, molybdenum, etc. When the engine is working, these additives in the engine oil and lubricating oil will sneak into the cylinder. Since the engine runs very fast, the time left for the combustion reaction is extremely short, so there will be a large number of ions and groups that have not reacted completely in the exhaust. From Figure 8 It can be seen that the main positive ions that form ash can be adsorbed onto the cathode plate connected to the negative electrode of the battery through this device; thereby separating the ash in the exhaust gas from the after-treatment system, reducing the deposition of silicon compounds on the DOC, and ultimately achieving the purpose of extending the life of the entire after-treatment system.

[0030] The chemical reaction principle on the cathode plate is as follows:

[0031]

[0032] Si+O 2 =SiO 2 (Attached to cathode plate)

[0033] The chemical reaction principle on the anode plate is as follows:

[0034] (Generated on the anode plate and flowing to the cathode plate)

[0035] The novel post-processing pre-device of the present invention is arranged between the engine and the post-processing device, pre-processes the engine exhaust, separates the silicon plasma in the exhaust, avoids the formation of silicon compounds and deposition, and can effectively extend the life of the post-processing system and prevent DOC silicon poisoning. In the specification provided herein, a large number of specific details are described. However, it can be understood that embodiments of the present invention can be practiced without these specific details. In some examples, well-known methods, structures and techniques are not shown in detail so as not to obscure the understanding of this specification.

[0036] In addition, those skilled in the art will understand that, although some embodiments described herein include certain features included in other embodiments but not other features, the combination of features of different embodiments also means being within the scope of protection of the present invention and forming different embodiments. For example, in the above embodiments, those skilled in the art can use them in combination according to the known technical solutions and the technical problems to be solved by this application. The above is only a preferred embodiment of the present invention, and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technician familiar with this patent can make some changes or modify the equivalent embodiments of equivalent changes by using the technical content suggested above without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention still belongs to the scope of the solution of the present invention.

Claims

1. A new post-processing pre-device, characterized by: The invention comprises an exhaust connection pipe (1), one end of the exhaust connection pipe (1) is connected to an engine, the other end of the exhaust connection pipe (1) is connected to a post-processing device, two groups of grid plates (4) are arranged inside the exhaust connection pipe (1), the two groups of grid plates (4) are externally connected to a battery pack (2), one group of grid plates (4) is connected to a positive electrode of the battery pack (2), and the other group of grid plates (4) is connected to a negative electrode of the battery pack (2), and a ceramic sleeve (5) for insulation is arranged at the end of the grid plate (4) located at the exhaust connection pipe (1).

2. A novel post-processing pre-device as claimed in claim 1, characterized in that: The exhaust connecting pipe (1) is arranged between the engine and the after-treatment device, and the exhaust connecting pipe (1) is connected to the exhaust gas outlet end of the engine.

3. A novel post-processing pre-device as claimed in claim 1, characterized in that: The exhaust connection pipe (1) is sealedly connected to the engine and the after-treatment device via a V-shaped clamp.

4. A novel post-processing pre-device as claimed in claim 1, characterized in that: A grid plate (4) is provided at each end of the exhaust connection pipe (1), and the two grid plates (4) are connected to the positive and negative electrodes of the battery pack (2) respectively.

5. A novel post-processing pre-device as claimed in claim 1, characterized in that: The grid plate (4) comprises a porous grid portion and a connecting portion, the porous grid portion being arranged in the exhaust connection pipe (1), and the connecting portion passing through an insulating ceramic sleeve (5) in the exhaust connection pipe (1) and connected to the battery pack (2) via a wire (3).

6. A novel post-processing pre-device as claimed in claim 1, characterized in that: The battery pack (2) is two 12V DC batteries.

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