CN213331319U - Exhaust gas recirculation throttling arrangement - Google Patents
Exhaust gas recirculation throttling arrangement Download PDFInfo
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- CN213331319U CN213331319U CN202022032827.4U CN202022032827U CN213331319U CN 213331319 U CN213331319 U CN 213331319U CN 202022032827 U CN202022032827 U CN 202022032827U CN 213331319 U CN213331319 U CN 213331319U
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Abstract
The utility model relates to an exhaust gas recirculation throttling device, which comprises a throttle valve, an air inlet pipeline connected with the throttle valve and a sealing ring positioned between the throttle valve and the air inlet pipeline; the throttle valve comprises a throttle valve body, an adapter connected with the throttle valve body, a rotating shaft connected with the adapter, a valve plate connected with the rotating shaft and a motor connected with the rotating shaft; the air inlet pipeline comprises a pipeline body, an adapter fixing position arranged on the pipeline body and a valve plate mounting hole communicated with the adapter fixing position, and the valve plate extends into the pipeline body through the valve plate mounting hole. The utility model provides an exhaust gas recirculation throttling arrangement, valve block assemble the admission line with the male mode in, then sealed mounting is carried out to the rethread sealing washer, need not increase the length of admission line, has also cancelled the setting of traditional three-way pipe, practices thrift the installation space of engine, practices thrift manufacturing cost.
Description
Technical Field
The utility model relates to an engine exhaust gas recirculation technical field specifically, relates to an exhaust gas recirculation throttling arrangement.
Background
The exhaust gas recirculation technology is mainly used in the field of diesel engines before, aims at reducing the emission of nitrogen oxides, is increasingly used on gasoline engines along with the increasing requirement on energy conservation of the gasoline engines, and can be divided into a high-pressure exhaust gas recirculation technology and a low-pressure exhaust gas recirculation technology according to the exhaust gas taking mode of the engines; in the field of low-pressure exhaust gas recirculation, in order to increase the exhaust gas recirculation rate into the cylinder, regulation by means of valves is required in the gas line.
In order to introduce more exhaust gas into the booster compressor, there are generally two technical solutions to adjust the resistance in the gas line: one is to add a back pressure valve at the tail of the exhaust system, and increase the resistance of the exhaust pipeline by the relation of the back pressure valve, so that more gas flows into the exhaust gas recirculation cooler and enters the supercharger compressor after being cooled, thereby ensuring the regulation of the exhaust gas recirculation rate. The back pressure valve of the scheme is positioned in high-temperature airflow, has high requirement on the temperature resistance of parts, generally needs to be made of better materials, needs to be forcibly cooled by a cooling water path, and has very high cost, so that the back pressure valve is not recommended very much.
And the other is that after air filtration, an exhaust gas recirculation throttling device is arranged in front of an exhaust gas inlet of a supercharger compressor, the exhaust gas recirculation throttling device is used for intentionally throttling in an air inlet system, and the opening degree of the exhaust gas recirculation throttling device is adjusted according to the working condition of the engine, so that the exhaust gas recirculation rate is adjusted. The structure of the exhaust gas recirculation throttling device of the scheme is similar to that of an engine throttle valve, in order to embed the exhaust gas recirculation throttling device into an air inlet pipeline, two end connectors are generally required to be added in the middle of the pipeline, so that a long arrangement space is required in the pipeline axis direction to complete installation and arrangement, however, the engine design process is often limited by a limited space, and if the air filter is too close to a supercharger compressor, the pipeline arrangement is limited, so that the problem of arrangement is difficult to solve by adopting the scheme.
Disclosure of Invention
The to-be-solved technical problem of the utility model is to provide an exhaust gas recirculation throttling arrangement practices thrift the installation and arranges the space, practices thrift the cost.
The utility model also provides an exhaust gas recirculation throttling device, which comprises a throttle valve, an air inlet pipeline connected with the throttle valve and a sealing ring positioned between the throttle valve and the air inlet pipeline;
the throttle valve comprises a throttle valve body, an adapter connected with the throttle valve body, a rotating shaft connected with the adapter, a valve plate connected with the rotating shaft and a motor connected with the rotating shaft;
the air inlet pipeline comprises a pipeline body, an adapter fixing position arranged on the pipeline body and a valve plate mounting hole communicated with the adapter fixing position, and the valve plate extends into the pipeline body through the valve plate mounting hole.
Preferably, a sealing ring mounting hole is further formed in the periphery of the valve plate mounting hole, the sealing ring mounting hole is a blind hole formed in the adapter fixing position, and the sealing ring is mounted inside the sealing ring mounting hole.
Preferably, the middle of the valve plate mounting hole is also provided with a cylindrical hole, the diameter of the cylindrical hole is larger than the maximum width of the valve plate mounting hole, and the rotating shaft is guided in a limiting manner through the cylindrical hole.
Preferably, the adapter is fixedly arranged on the pipeline body, the shape and the size of the adapter are matched with those of the adapter, and the adapter is connected with the adapter flange.
Preferably, the tail end of the rotating shaft is provided with a first clamping piece and a second clamping piece opposite to the first clamping piece, and the valve plate is embedded between the first clamping piece and the second clamping piece and fixed through a bolt.
Preferably, the valve plate is of a circular structure, and the area of the valve plate is smaller than or equal to that of the cross section of the air inlet pipeline.
Preferably, the adapter comprises an adapter body and a rotating shaft mounting hole formed in the adapter body, and the adapter body is connected with the throttle valve body through a screw.
Preferably, the shape and size of the rotating shaft mounting hole are matched with those of the rotating shaft;
the rotating shaft sequentially passes through the rotating shaft mounting hole and the valve block mounting hole and extends into the air inlet pipeline.
Preferably, the adapter further comprises a limiting protrusion, and the limiting protrusion extends from one side of the adapter body to a direction close to the valve plate;
the shape, size and position of the valve block mounting hole are matched with those of the limiting bulge, and the limiting bulge is embedded into the valve block mounting position.
Preferably, the bottom of the motor is provided with a first motor mounting hole;
and a second motor mounting hole is formed in one side of the pipeline body, and a bolt penetrates through the first motor mounting hole and the second motor mounting hole.
Compared with the prior art, the beneficial effects of the utility model reside in that:
1. the utility model provides an exhaust gas recirculation throttling arrangement, simple structure, and the valve block assembles the admission line with male mode in, then sealed mounting is carried out to the rethread sealing washer, need not increase the length of admission line, has also cancelled the setting of traditional three-way pipe, has practiced thrift the installation space of engine, and has practiced thrift manufacturing cost.
2. The utility model provides an exhaust gas recirculation throttling arrangement, through the setting of spacing arch and valve block mounting hole, led the fixed mounting of adapter, installation convenient and fast.
3. The utility model provides an exhaust gas recirculation throttling arrangement sets up the cylinder hole through the centre at the valve block mounting hole, has led the installation of pivot, and assembly process is simple.
Drawings
Fig. 1 is a schematic structural diagram of an exhaust gas recirculation throttling device provided by the present invention;
fig. 2 is a schematic structural view of a seal ring of an air inlet pipe of the exhaust gas recirculation throttling device provided by the present invention;
fig. 3 is a schematic structural diagram of a throttle valve of the exhaust gas recirculation throttle device provided by the present invention;
fig. 4 is a schematic structural diagram of an adapter of the exhaust gas recirculation throttle device provided by the present invention;
fig. 5 is a schematic structural view of the rotating shaft and the valve plate of the exhaust gas recirculation throttling device provided by the present invention.
Detailed Description
In order to make the technical solution of the present invention better understood by those skilled in the art, the present invention will be further described in detail with reference to the accompanying drawings and preferred embodiments.
As shown in fig. 1 to 3, an exhaust gas recirculation throttle device includes a throttle valve 1, an intake pipe 2 connected to the throttle valve 1, and a gasket 3 located between the throttle valve 1 and the intake pipe 2;
the throttle valve 1 comprises a throttle valve body 11, an adapter 12 connected with the throttle valve body 11, a rotating shaft 13 connected with the adapter 12, a valve plate 14 connected with the rotating shaft 13 and a motor 15 connected with the rotating shaft 13;
As shown in fig. 3, the throttle valve 1 is used for adjusting the flow of exhaust gas entering an engine, so as to match the engine in different working states, and includes a throttle valve body 11, an adapter 12 connected to the throttle valve body 11, a rotating shaft 13 connected to the adapter 12, a valve plate 14 connected to the rotating shaft 13, and a motor 15 connected to the rotating shaft 13, where the throttle valve body 11 is used for installing the adapter 12, the rotating shaft 13, and the valve plate 14, so that the valve plate 14 can be driven by the motor 15 and the rotating shaft 13 to rotate, the motor 15 is connected to the rotating shaft 13, and drives the rotating shaft 13 to rotate, so as to drive the valve plate 14 to rotate, and thus, the adjustment of the gas flow can be achieved.
Here, since the motor 15 has a heavy weight, in order to prevent the throttle body 11 from being affected by an excessive load, the motor 15 needs to share the weight of the throttle body 11, and a first motor mounting hole 16 is formed at the bottom of the motor 15.
As shown in fig. 4, the adapter 12 is connected to the throttle body 11, and is used to connect the throttle valve 1 to the intake pipe 2. Specifically, the adapter 12 includes an adapter body 121 and a rotating shaft mounting hole 122 formed in the adapter body 121, the adapter body 121 is connected to the throttle body 11 through a screw, the rotating shaft mounting hole 122 is matched with the rotating shaft 13 in shape and size, so that the rotating shaft 13 sequentially passes through the rotating shaft mounting hole 122 and the valve plate mounting hole 23 and extends into the air inlet pipe 2, and it is ensured that the driving force of the motor 15 can be transmitted to the valve plate 14 through the rotating shaft 13.
Correspondingly, in order to facilitate the installation and guide the assembly between the adapter 12 and the air inlet pipe 2, the adapter 12 further includes a limiting protrusion 123, and the limiting protrusion 123 extends from one side of the adapter body 121 to a direction close to the valve plate 14.
One end of the rotating shaft 13 is connected with the motor 15, so that the motor 15 can drive the rotating shaft 13 to rotate, and the rotating shaft 13 sequentially passes through the rotating shaft mounting hole 122 and the valve plate mounting hole 23 to stretch into the air inlet pipeline 2, and the driving force of the motor 15 can be transmitted to the valve plate 14 through the rotating shaft 13.
As shown in fig. 5, in order to realize the fixed connection between the rotating shaft 13 and the valve plate 14, a first clamping piece 131 and a second clamping piece 132 opposite to the first clamping piece 131 are arranged at the end of the rotating shaft 13, and the valve plate 14 is embedded between the first clamping piece 131 and the second clamping piece 132 and fixed by bolts, so that the fixed installation between the rotating shaft 13 and the valve plate 14 is realized.
The valve plate 14 is fixed at the tail end of the rotating shaft 13 and rotates under the action of the rotating shaft 13 and the motor 15, so that the flow of the recirculated waste gas is changed, the valve plate is of a circular structure, the area of the valve plate is smaller than or equal to the area of the cross section of the air inlet pipeline 2, when the valve plate 14 is perpendicular to the axial direction of the air inlet pipeline 2, the flow of the recirculated waste gas is minimum, and when the valve plate 14 is parallel to the axial direction of the air inlet pipeline 2, the flow of the recirculated waste gas is maximum.
The air inlet pipeline 2 is communicated with an air inlet pipe of the automobile engine and used for conveying recirculated exhaust gas to the air inlet pipe of the automobile engine, the air inlet pipeline comprises a pipeline body 21, an adapter fixing position 22 on the pipeline body 21 and a valve plate mounting hole 23 penetrating through the adapter fixing position 22, and a cavity is formed inside the pipeline body 21 and is convenient for conveying exhaust gas.
In order to cooperate and fix the motor 15, a second motor mounting hole 24 is formed in one side of the pipeline body 21, and a connecting piece such as a bolt penetrates through the first motor mounting hole 16 and the second motor mounting hole 24, so that the weight of the motor 15 is shared, and the reliability of the throttle valve is improved.
The adapter fixing portion 22 is provided on the pipe body 21, and the shape and size thereof match those of the adapter 12, and is flange-connected to the adapter 12.
Valve block mounting hole 23 link up adapter fixed position 22, be convenient for valve block 14 to pass through valve block mounting hole 23 stretches into inside the cavity. In order to match the installation guide of the adapter 12, the shape, size and position of the valve plate installation hole 23 are matched with the shape, size and position of the limiting protrusion 123, and the limiting protrusion 123 is embedded into the valve plate installation hole 23.
In order to guide the position of the rotating shaft 13, a cylindrical hole 25 is further formed in the middle of the valve plate mounting hole 23, the diameter of the cylindrical hole 25 is larger than the maximum width of the valve plate mounting hole 23, and the rotating shaft 13 is limited and guided through the cylindrical hole 25, so that the rotating shaft 13 is fixedly mounted.
Correspondingly, in order to realize the sealing between the adapter 12 and the air inlet pipe 2, a sealing ring mounting hole is further formed around the valve plate mounting hole 23, the sealing ring mounting hole is a blind hole formed in the adapter fixing position 22, so that the sealing ring 3 is conveniently mounted in the sealing ring mounting hole, and the air inlet pipe 2 is connected with the throttle valve 1 in a sealing mode.
The sealing ring 3 is used for realizing sealing, is positioned between the throttle valve 1 and the air inlet pipeline 2 and is embedded into the sealing ring mounting hole, and after the assembly is finished, the sealing ring 3 is extruded and deformed to realize the sealing effect.
The utility model provides an exhaust gas recirculation throttling arrangement, simple structure, and during valve block 14 assembled admission line 2 with the male mode, then sealed installation is carried out to rethread seal ring 3, need not increase admission line 2's length, has also cancelled the setting of traditional three-way pipe, has practiced thrift the installation space of engine, and has practiced thrift manufacturing cost.
The foregoing is a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations are also considered as the protection scope of the present invention.
Claims (10)
1. An exhaust gas recirculation throttling device is characterized by comprising a throttling valve, an air inlet pipeline connected with the throttling valve and a sealing ring positioned between the throttling valve and the air inlet pipeline;
the throttle valve comprises a throttle valve body, an adapter connected with the throttle valve body, a rotating shaft connected with the adapter, a valve plate connected with the rotating shaft and a motor connected with the rotating shaft;
the air inlet pipeline comprises a pipeline body, an adapter fixing position arranged on the pipeline body and a valve plate mounting hole communicated with the adapter fixing position, and the valve plate extends into the pipeline body through the valve plate mounting hole.
2. The egr throttling device of claim 1, wherein a gasket mounting hole is further formed around the valve plate mounting hole, the gasket mounting hole is a blind hole formed in the adapter fixing portion, and the gasket is mounted inside the gasket mounting hole.
3. The egr throttling device of claim 1, wherein a cylindrical hole is further formed in the middle of the valve plate mounting hole, the diameter of the cylindrical hole is larger than the maximum width of the valve plate mounting hole, and the rotating shaft is guided in a limiting manner through the cylindrical hole.
4. The egr throttling device of claim 1, wherein said adapter is fixedly positioned on said conduit body, is shaped and sized to match the shape and size of said adapter, and is flanged to said adapter.
5. The egr throttling device of claim 1, wherein a first clip and a second clip are provided at a distal end of the rotating shaft, the second clip being disposed opposite to the first clip, and the valve plate is interposed between the first clip and the second clip and fixed by a bolt.
6. The exhaust gas recirculation throttle device of claim 1, wherein the valve plate is of circular configuration and has an area less than or equal to the cross-sectional area of the intake conduit.
7. The exhaust gas recirculation throttle device of claim 1, characterized in that the adapter comprises an adapter body and a spindle mounting hole provided on the adapter body, the adapter body being connected with the throttle body by a screw.
8. The egr throttling device of claim 7, wherein said shaft mounting hole matches the shape and size of said shaft;
the rotating shaft sequentially passes through the rotating shaft mounting hole and the valve block mounting hole and extends into the air inlet pipeline.
9. The exhaust gas recirculation throttle device of claim 7, wherein the adapter further comprises a stopper protrusion extending from a side of the adapter body in a direction approaching the valve plate;
the shape, size and position of the valve block mounting hole are matched with those of the limiting bulge, and the limiting bulge is embedded into the valve block mounting position.
10. The exhaust gas recirculation throttle device of claim 1, wherein a bottom of the motor is provided with a first motor mounting hole;
and a second motor mounting hole is formed in one side of the pipeline body, and a bolt penetrates through the first motor mounting hole and the second motor mounting hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022032827.4U CN213331319U (en) | 2020-09-16 | 2020-09-16 | Exhaust gas recirculation throttling arrangement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022032827.4U CN213331319U (en) | 2020-09-16 | 2020-09-16 | Exhaust gas recirculation throttling arrangement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213331319U true CN213331319U (en) | 2021-06-01 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022032827.4U Active CN213331319U (en) | 2020-09-16 | 2020-09-16 | Exhaust gas recirculation throttling arrangement |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213331319U (en) |
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2020
- 2020-09-16 CN CN202022032827.4U patent/CN213331319U/en active Active
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