CN216044113U - EGR air mixing device and vehicle - Google Patents
EGR air mixing device and vehicle Download PDFInfo
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- CN216044113U CN216044113U CN202122693368.9U CN202122693368U CN216044113U CN 216044113 U CN216044113 U CN 216044113U CN 202122693368 U CN202122693368 U CN 202122693368U CN 216044113 U CN216044113 U CN 216044113U
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Abstract
The utility model belongs to the technical field of automobile parts and discloses an EGR (exhaust gas recirculation) air mixing device and an automobile, wherein the EGR air mixing device comprises an air inlet manifold and an air guide pipe, the air inlet manifold comprises a first pipeline and a second pipeline, the air guide pipe is detachably inserted in the second pipeline and extends to the first pipeline, the air guide pipe is provided with an air inlet and an air outlet, the air inlet is communicated with the second pipeline, and the air outlet is communicated with the first pipeline; the vehicle includes the EGR air mixing device described above. The first pipeline is used for flowing into fresh gas, and the second pipeline is used for flowing into waste gas, and the air duct can guide waste gas to the mixing of fresh gas and waste gas in order to realize in the first pipeline from the second pipeline, has improved structural strength, and wherein the air duct can be dismantled to insert and locate in the second pipeline, and the assembly maintenance is simple.
Description
Technical Field
The utility model relates to the technical field of automobile parts, in particular to an EGR air mixing device and an EGR air mixing vehicle.
Background
An EGR system, i.e., an exhaust gas recirculation system, is a system that introduces a small portion of exhaust gas generated by an engine to an intake manifold through a corresponding pipeline, and then returns the exhaust gas to the engine to realize exhaust gas recirculation. In the prior art, on one hand, an EGR waste gas pipeline is directly connected with a port on one side of an air inlet manifold, and waste gas is introduced through the port, so that fresh air inlet and introduced waste gas are easy to form a vortex, and the mixing rate is influenced; on the other hand, the ERG exhaust gas pipeline is directly inserted into the intake manifold, and the structure has long pipeline, is easy to break and is inconvenient to assemble and maintain.
Based on the above situation, it is desired to design an EGR air mixing device and a vehicle to solve the above problems.
SUMMERY OF THE UTILITY MODEL
One object of the present invention is: the EGR air mixing device is improved in structural strength and simple to assemble and maintain.
Another object of the utility model is: a vehicle is provided, which comprises the EGR air mixing device.
In order to achieve the purpose, the utility model adopts the following technical scheme:
an EGR air mixing device, comprising:
the system comprises an air inlet manifold and a gas outlet manifold, wherein the air inlet manifold comprises a first pipeline and a second pipeline, the first pipeline is used for flowing in fresh gas, and the second pipeline is used for flowing in waste gas;
the gas guide pipe is detachably inserted into the second pipeline and extends to the first pipeline, the gas guide pipe is provided with a gas inlet and a gas outlet, the gas inlet is communicated with the second pipeline, the gas outlet is communicated with the first pipeline, and the gas guide pipe can guide the waste gas from the second pipeline to the inside of the first pipeline.
Preferably, the air outlet faces the extending direction of the first pipeline.
Preferably, the air duct extends the first pipeline along a straight line, and the air outlet is provided as an oblique opening facing the extending direction of the first pipeline.
As a preferable scheme, the gas guide pipes are provided with a plurality of gas guide pipes, and the flow direction of the waste gas guided out by the oblique ports of the gas guide pipes forms an included angle of 60-120 degrees with the flow direction of the fresh gas.
Preferably, the EGR air mixing device further comprises a bolt extending through the end of the air duct and connected to the wall of the second pipe.
As a preferable scheme, the EGR air mixing device further includes a sealing gasket, and the sealing gasket is clamped between the end of the air duct and the pipe wall of the second pipeline.
As a preferred scheme, the air outlet is arranged at the end part of the air guide pipe, and the depth of the air guide pipe extending into the first pipeline is adjustable.
Preferably, the air duct is provided with a plurality of air ducts, and the lengths of the air ducts are different.
Preferably, flanges are provided at both ends of the first pipe, and the flanges can be connected to a carburetor, a throttle body, or a cylinder.
In another aspect, a vehicle is also disclosed, comprising the EGR air mixing device.
The utility model has the beneficial effects that: the utility model provides a EGR air mixing arrangement and car, EGR air mixing arrangement includes air intake manifold and air duct, and air intake manifold's first pipeline is used for flowing in fresh gas, and the second pipeline is used for flowing in waste gas, and the air duct can guide waste gas to the mixing of fresh gas and waste gas in order to realize in the first pipeline from the second pipeline, has improved structural strength, and wherein the air duct can be dismantled to insert and locate in the second pipeline, and the assembly maintenance is simple.
Drawings
The utility model is explained in more detail below with reference to the figures and examples.
FIG. 1 is an exploded view of an EGR air mixing device;
FIG. 2 is a schematic view of the structure of the airway tube;
FIG. 3 is a schematic structural view of an EGR air mixing device;
fig. 4 is a schematic view of the internal gas flow direction of the EGR air mixing device.
In fig. 1 to 4:
1. an intake manifold; 11. a first pipeline; 12. a second pipeline;
2. an air duct; 21. an air inlet; 22. an air outlet;
3. a bolt;
4. sealing gaskets;
5. and (4) a flange.
Detailed Description
In order to make the technical problems solved, technical solutions adopted and technical effects achieved by the present invention clearer, the technical solutions of the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
The technical scheme of the utility model is further explained by the specific implementation mode in combination with the attached drawings.
In the prior art, in order to mix exhaust gas with fresh gas in the intake manifold 1, on one hand, an EGR exhaust gas pipeline is directly connected with a port on one side of the intake manifold 1, and exhaust gas is directly introduced through the port, so that the fresh gas and the introduced exhaust gas generate vortex, and the mixing rate of the gases is influenced; on the other hand, directly inserting the exhaust gas pipe into the intake manifold 1 is lengthy, easily broken, and inconvenient in assembly and maintenance. The embodiment provides an EGR air mixing device, which not only improves the structural strength, but also has simple assembly and maintenance because the air guide pipe 2 is detachably inserted in the second pipeline 12.
As shown in fig. 1, 3 and 4, the EGR air mixing device includes an intake manifold 1 and an air duct 2, the intake manifold 1 includes a first pipeline 11 and a second pipeline 12, the first pipeline 11 and the second pipeline 12 are integrally cast, but the first pipeline 11 is not directly communicated with the second pipeline 12, the first pipeline 11 is used for the inflow of fresh air, and the second air is used for the inflow of exhaust gas; the opening has been seted up to the lateral wall of second pipeline 12, air duct 2 inserts second pipeline 12 and extends to first pipeline 11 through this opening, and air duct 2 can dismantle the lateral wall of connection at second pipeline 12, air inlet 21 and gas outlet 22 have been seted up respectively to the lateral wall and the tip of air duct 2, air inlet 21 is arranged in second pipeline 12 with intercommunication second pipeline 12 and air duct 2, gas outlet 22 is arranged in first pipeline 11 with intercommunication first pipeline 11 and air duct 2, make air duct 2 can guide waste gas to first pipeline 11 from second pipeline 12 in. Specifically, fresh gas flows in from first pipeline 11, and waste gas flows in from second pipeline 12, then flows in first pipeline 11 via air duct 2, and fresh gas mixes at the back end of first pipeline 11 with waste gas, can not produce the vortex, and then carries the gas mixture to the engine, because oxygen content in the waste gas is lower, and is inertia, so can produce the inhibitory action to the burning, reduce combustion rate, slow down engine combustion chamber pressure formation process, and then reduce the production of oxynitrides, in order to reach the purpose that reduces the emission. It can be understood that the exhaust gas pipeline adopts a two-section structure of a second pipeline 12 integrally cast with the first pipeline 11 and an air duct 2 detachably connected to the second pipeline 12, so that the structural strength is improved, and the defects of fracture and the like are not easy to occur; and when needing to assemble EGR air mixing arrangement, only need with air duct 2 install in second pipeline 12 can, when needing to maintain assembly EGR air mixing arrangement, only need with air duct 2 from second pipeline 12 dismantle can, simplified assembly maintenance operation.
In this embodiment, the gas outlet 22 faces the extending direction of the first pipeline 11, so that the exhaust gas guided out by the gas guiding tube 2 flows to the extending direction of the first pipeline 11, thereby increasing the mixing rate with the fresh gas in the first pipeline 11.
As shown in fig. 2 and 4, specifically, the gas-guide tube 2 is arranged in a straight line, the gas-guide tube 2 is inserted into the second tube 12 in the straight line direction and extends into the first tube 11, and the gas outlet 22 at the end of the gas-guide tube 2 is arranged as an oblique opening, where the extension direction of the plane of the gas outlet 22 and the extension direction of the gas-guide tube 2 form an acute angle, so that the gas outlet 22 faces the extension direction of the first tube 11, and the structure is simple. In other embodiments of the utility model, the air outlet 22 may also be provided on the side wall of the airway tube 2.
As a preferred embodiment, there may be a plurality of air ducts 2, and the specific number is set according to actual needs, when the oblique openings of a plurality of air ducts 2 are inserted into the first pipeline 11, the flow direction of the exhaust gas guided by the air ducts 2 forms an angle of 60 ° to 120 ° with the flow direction of the fresh gas. When the model of engine changed, can dismantle air duct 2 and reassemble another air duct 2 to the contained angle of the flow direction of adjustment waste gas and fresh gas flow direction, thereby all can realize waste gas and fresh gas's intensive mixing under the air intake flow that different horsepower was taken place dynamic, improved the commonality. In other embodiments of the present invention, the gas guiding tube 2 is configured as a revolving body, when the gas guiding tube 2 rotates to different positions, the gas guiding tube 2 can still be connected to the second pipeline 12, and the included angle between the flow direction of the exhaust gas and the flow direction of the fresh gas can also be adjusted, for example, the second pipeline 12 is provided with a plurality of first connecting holes arranged in a ring shape, the gas guiding tube 2 is provided with second connecting holes, and the connecting member penetrates through the second connecting holes and is connected to the inner wall of the first connecting holes to connect the gas guiding tube 2 to the second pipeline 12, so that the gas guiding tube 2 can still be reconnected to the second pipeline 12 when the gas guiding tube 2 rotates to different positions.
As shown in fig. 1, the connecting member of this embodiment is provided with a bolt 3, and the bolt 3 penetrates through the second connecting hole on the air duct 2 and is connected to the first connecting hole on the wall of the second pipeline 12, so as to detachably connect the air duct 2 to the second pipeline 12, and the structure is simple. In other embodiments of the utility model, the airway tube 2 may be removably connected to the second conduit 12 by a snap-fit clamp.
As a preferred embodiment, the EGR air mixing device further includes a sealing gasket 4, the sealing gasket 4 is made of plastic, and the sealing gasket 4 is interposed between the end of the air duct 2 and the wall of the second pipeline 12, so as to improve the sealing property and prevent the exhaust gas from leaking from the joint.
In this embodiment, the degree of depth that air duct 2 extends into first pipeline 11 is adjustable, and when the model of engine changed, can adjust the degree of depth that air duct 2 extends into first pipeline 11 to the homoenergetic that all can realize waste gas and fresh gas's intensive mixing under the air intake flow of different horsepower power, improved the commonality.
Specifically, air duct 2 can be provided with a plurality ofly, and specific quantity sets up according to actual need, and the length diverse of a plurality of air ducts 2, that is to say the degree of depth diverse that a plurality of air ducts 2 extend into first pipeline 11, and gas outlet 22 sets up in the tip of air duct 2, and a plurality of 2 gas outlets 22 of air duct are in first pipeline 11 position diverse. When the model of engine changed, can dismantle air duct 2 and reassemble another air duct 2 again to the degree of depth that adjustment air duct 2 extended into first pipeline 11, with the homoenergetic enough realizes waste gas and fresh gas's intensive mixing under the inlet flow that different horsepower took place power, improved the commonality. In another embodiment of the present invention, a plurality of sealing gaskets 4 having different thicknesses may be provided, and the same function can be achieved by adjusting the thickness of the sealing gasket 4 to adjust the depth of the gas-guide tube 2 extending into the first tube 11.
In this embodiment, flanges 5 are disposed at two ends of the first pipeline 11, the flanges 5 are located at two end openings of the first pipeline 11 and are integrally formed with the first pipeline 11, the flange 5 at one end of the first pipeline 11 can be connected to a carburetor or a throttle body, and the flange 5 at the other end can be connected to a cylinder of an engine, so as to guide fresh air into the cylinder through the first pipeline 11. Wherein the provision of the flange 5 simplifies the assembly operation of the first pipeline 11 with other components.
The embodiment also provides a vehicle comprising the EGR air mixing device, wherein the EGR air mixing device can be used for mixing fresh air and a small part of exhaust gas generated by the engine and then conveying the mixed fresh air and the small part of exhaust gas back to the engine. The exhaust gas pipeline of the EGR air mixing device adopts a two-section structure of a second pipeline 12 integrally cast with the first pipeline 11 and an air duct 2 detachably connected to the second pipeline 12, so that the EGR air mixing device has high structural strength and is not easy to break and the like; and the air duct 2 can be detachably inserted into the second pipeline 12, so that the assembly and maintenance are simple, the reliability of the vehicle is improved, and the assembly and maintenance operation of the vehicle is simplified.
In the description herein, it is to be understood that the terms "upper," "lower," "left," "right," and the like are based on the orientation or positional relationship shown in the drawings for convenience in description and simplicity of operation, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the present invention. Furthermore, the terms "first" and "second" are used merely for descriptive purposes and are not intended to have any special meaning.
In the description herein, references to the description of "an embodiment," "an example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example.
In addition, the foregoing is only the preferred embodiment of the present invention and the technical principles applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the utility model. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (10)
1. An EGR air mixing device, comprising:
an intake manifold (1) comprising a first line (11) and a second line (12), the first line (11) being intended for the inflow of fresh gas and the second line (12) being intended for the inflow of exhaust gas;
the gas guide pipe (2) is detachably inserted into the second pipeline (12) and extends to the first pipeline (11), a gas inlet (21) and a gas outlet (22) are formed in the gas guide pipe (2), the gas inlet (21) is communicated with the second pipeline (12), the gas outlet (22) is communicated with the first pipeline (11), and the gas guide pipe (2) can guide the waste gas from the second pipeline (12) to the interior of the first pipeline (11).
2. EGR air mixing device according to claim 1, characterized in that the air outlet (22) is directed towards the direction of extension of the first line (11).
3. EGR air mixing device according to claim 2, characterized in that the air duct (2) extends in a straight direction into the first line (11), and that the air outlet (22) is provided as a beveled opening facing in the direction of extension of the first line (11).
4. The EGR air mixing device according to claim 3, wherein the gas guide tube (2) is provided with a plurality of gas guide tubes, and the flow direction of the exhaust gas guided out by the inclined openings of the gas guide tubes (2) forms an included angle of 60-120 degrees with the flow direction of the fresh gas.
5. The EGR air mixing device according to claim 1, further comprising a bolt (3), wherein the bolt (3) penetrates through the end of the air duct (2) and is connected to the wall of the second pipe (12).
6. The EGR air mixing device according to claim 5, further comprising a sealing gasket (4), wherein the sealing gasket (4) is sandwiched between the end of the air duct (2) and the wall of the second pipeline (12).
7. The EGR air mixing device according to claim 1, wherein the air outlet (22) opens at an end of the air duct (2), and a depth of extension of the air duct (2) into the first pipeline (11) is adjustable.
8. The EGR air mixing device according to claim 7, wherein the air guide tube (2) is provided in plural, and the plural air guide tubes (2) are different in length from each other.
9. EGR air mixing device according to claim 1, characterized in that both ends of the first line (11) are provided with flanges (5), which flanges (5) can be connected to a carburetor, throttle body or cylinder.
10. A vehicle comprising an EGR air mixing device according to any of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122693368.9U CN216044113U (en) | 2021-11-05 | 2021-11-05 | EGR air mixing device and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122693368.9U CN216044113U (en) | 2021-11-05 | 2021-11-05 | EGR air mixing device and vehicle |
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| Publication Number | Publication Date |
|---|---|
| CN216044113U true CN216044113U (en) | 2022-03-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122693368.9U Active CN216044113U (en) | 2021-11-05 | 2021-11-05 | EGR air mixing device and vehicle |
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| CN (1) | CN216044113U (en) |
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- 2021-11-05 CN CN202122693368.9U patent/CN216044113U/en active Active
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