CN212337491U - EGR cooler with improved exhaust gas mixing and cooling effects - Google Patents
EGR cooler with improved exhaust gas mixing and cooling effects Download PDFInfo
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- CN212337491U CN212337491U CN202020338912.0U CN202020338912U CN212337491U CN 212337491 U CN212337491 U CN 212337491U CN 202020338912 U CN202020338912 U CN 202020338912U CN 212337491 U CN212337491 U CN 212337491U
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- egr cooler
- exhaust gas
- waste gas
- intake pipe
- air inlet
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Abstract
The utility model discloses a possess EGR cooler who improves waste gas mixture and cooling effect, including EGR cooler subassembly, intake pipe and air throttle, the air inlet of EGR cooler subassembly communicates the blast pipe, and the air inlet of intake pipe communicates the gas outlet of EGR cooler subassembly and the gas outlet of air throttle respectively, and EGR cooler subassembly includes the cooling water chamber and locates the inside waste gas passageway in cooling water chamber, the air inlet intercommunication of waste gas passageway the blast pipe, the gas outlet intercommunication intake pipe of waste gas passageway, the inlet end of waste gas passageway is established to the pipeline that reduces gradually along the direction of admitting air internal diameter. The utility model discloses a change the shape of the inside waste gas circulation passageway of EGR cooler, make the blast pipe get into the waste gas in the EGR cooler, lead to and admit air behind the takeover and fresh air mixing more even, further strengthen the cooling effect.
Description
Technical Field
The utility model relates to the technical field of engines, especially, relate to an EGR cooler that possesses and improves waste gas mixing and cooling effect.
Background
To meet current engine emission legislation requirements, EGR (exhaust gas recirculation) systems are a common configuration. The conventional EGR cooler has the defects that the common short distance between waste gas and an air inlet pipe cannot meet the requirement of fully mixing the waste gas and high-density fresh air, so that the mixed gas is not uniformly mixed and enters a combustion chamber to cause different combustion effects of cylinders.
The exhaust gas pipeline in the EGR cooler is uniformly and densely arranged, the exhaust gas passing through the EGR cooler enters the air inlet connecting pipe and is not uniformly mixed with fresh air, and the cooling effect is poor. A prior art EGR cooler construction is shown in figure 1. The shape and size of the exhaust gas flow passage in the EGR cooler are uniform, and the flow speed of the exhaust gas flowing in the exhaust gas flow passage is not obviously changed, so that the uniform mixing of the exhaust gas and the fresh air is not facilitated.
SUMMERY OF THE UTILITY MODEL
To the above problem, the utility model provides a possess EGR cooler who improves waste gas mixture and cooling effect, through the shape that changes the inside exhaust gas passage of EGR cooler, make the blast pipe get into the waste gas in the EGR cooler, lead to behind the intake pipe more even with fresh air mixing, further reinforcing cooling effect.
The utility model discloses take following technical scheme to realize above-mentioned purpose:
the utility model provides a possess EGR cooler who improves waste gas mixture and cooling effect, includes EGR cooler subassembly, intake pipe and throttle valve, the air inlet intercommunication blast pipe of EGR cooler subassembly, the air inlet of intake pipe communicates the gas outlet of EGR cooler subassembly and the gas outlet of throttle valve respectively, and the EGR cooler subassembly includes the cooling water chamber and locates the inside exhaust gas passage in cooling water chamber, the air inlet intercommunication of exhaust gas passage the blast pipe, the gas outlet intercommunication intake pipe of exhaust gas passage, the inlet end of exhaust gas passage establishes to the pipeline that reduces gradually along the direction of admitting air internal diameter.
Furthermore, the number of the waste gas channels is not less than three, and the waste gas channels are arranged in parallel.
Further, the exhaust gas cooling device further comprises an EGR exhaust gas pipeline, and an air outlet of the EGR cooler assembly is communicated with an air inlet of the air inlet pipe through the EGR exhaust gas pipeline.
The utility model has the advantages that:
1. the pipeline inlet end of the waste gas channel is gradually reduced along the inner diameter of the air inlet direction, so that the flow speed of the waste gas is accelerated, and the waste gas is enabled to impact the pipe wall at a high speed when entering the air inlet pipe, so that the waste gas and the fresh air are fully mixed, and the combustion is optimized.
2. The number of exhaust gas passages can be reduced within the same volume of the EGR cooler, the weight of the EGR cooler body can be reduced, and more space can be left inside the EGR cooler for the coolant to further improve the cooling effect of the exhaust gas.
Drawings
Fig. 1 is a schematic structural diagram of an EGR cooler with improved exhaust gas mixing and cooling effects according to the background of the present invention;
FIG. 2 is a schematic structural diagram of an EGR cooler with improved exhaust gas mixing and cooling effects provided by the present invention;
fig. 3 is a schematic structural diagram of an EGR cooler assembly in an EGR cooler with improved exhaust gas mixing and cooling effects provided by the background art of the present invention.
In the figure, 1-EGR cooler module, 2-inlet pipe, 3-throttle valve, 4-EGR exhaust pipeline, 11-cooling water cavity and 12-exhaust passage.
Detailed Description
The present invention will be described in detail with reference to the accompanying fig. 2-3 and the detailed description.
Please refer to fig. 2 and fig. 3 simultaneously, the embodiment of the present invention provides an EGR cooler with improved exhaust gas mixing and cooling effects, including EGR cooler assembly 1, intake pipe 2 and throttle 3, the air inlet of EGR cooler assembly 1 communicates with the exhaust pipe of the engine, and the air inlet of intake pipe 2 communicates with the air outlet of EGR cooler assembly 1 and the air outlet of throttle 3 respectively. The EGR cooler assembly 1 comprises a cooling water cavity 11 and an exhaust gas channel 12 arranged inside the cooling water cavity 11, wherein an air inlet of the exhaust gas channel 12 is communicated with an exhaust pipe of an engine, an air outlet of the exhaust gas channel 12 is communicated with an air inlet pipe 2, and an air inlet end of the exhaust gas channel 12 is arranged into a pipeline with the inner diameter gradually reduced along the air inlet direction.
The utility model discloses a possesses EGR cooler who improves waste gas mixture and cooling effect when using, waste gas flows in exhaust passage 12 from the blast pipe of engine, internal diameter along the direction of admission reduces gradually because of exhaust passage 12's inlet end, the atmospheric pressure of the big one end of inlet end internal diameter of exhaust passage 12 is greater than the atmospheric pressure of the little one end of internal diameter, make the interior atmospheric pressure difference that forms of exhaust passage 12, thereby make waste gas in EGR cooler subassembly 1 pass through exhaust passage 12 and get into intake pipe 2 with higher speed, waste gas strikes behind the pipe wall of intake pipe 2 and throttle valve 3 gets into the fresh air in intake pipe 2 at the inlet end intensive mixing of intake pipe 2 at a high speed, and further strengthen mixing in the intake pipe 2, in order to optimize the burning. The shape of the inlet end of the exhaust gas channel 12 is designed to increase the flow speed of the exhaust gas and ensure that the exhaust gas and the fresh air are uniformly mixed in a very short pipeline.
Preferably, the number of the exhaust gas passages 12 is not less than three, and the exhaust gas passages 12 are arranged in parallel. In the present embodiment, the number of the exhaust gas passages 12 is set to three. The number of exhaust gas passages can be reduced within the same volume of the EGR cooler, the weight of the EGR cooler body can be reduced, and more space can be left inside the EGR cooler for the coolant to further improve the cooling effect of the exhaust gas.
Preferably, the present invention also includes an EGR exhaust line 4. The air outlet of the EGR cooler assembly 1 is communicated with the air inlet of the air inlet pipe 2 through an EGR waste gas pipeline 4. The exhaust gases in the EGR cooler package 1 are accelerated through the exhaust gas channel 12 into the EGR exhaust line 2 and through the guiding action of the EGR exhaust line 2 into the inlet line 2.
Although the invention has been described in detail and with reference to specific embodiments thereof, it will be apparent to one skilled in the art that modifications and improvements can be made thereto. Therefore, such modifications and improvements are intended to be within the scope of the invention as claimed.
Claims (3)
1. The utility model provides a possess EGR cooler who improves waste gas mixture and cooling effect, including EGR cooler subassembly (1), intake pipe (2) and throttle valve (3), the air inlet intercommunication blast pipe of EGR cooler subassembly (1), the air inlet of intake pipe (2) communicates the gas outlet of EGR cooler subassembly (1) and the gas outlet of throttle valve (3) respectively, a serial communication port, EGR cooler subassembly (1) is including cooling water chamber (11) and locate inside exhaust gas passageway (12) in cooling water chamber (11), the air inlet intercommunication of exhaust gas passageway (12) blast pipe, the gas outlet intercommunication intake pipe (2) of exhaust gas passageway (12), the inlet end of exhaust gas passageway (12) is established to the pipeline that reduces along the direction of admitting air internal diameter gradually.
2. An EGR cooler with improved exhaust gas mixing and cooling effects according to claim 1, characterized in that the number of the exhaust gas passages (12) is not less than three, and the exhaust gas passages (12) are arranged in parallel.
3. The EGR cooler with the improved exhaust gas mixing and cooling effects as recited in claim 1, further comprising an EGR exhaust gas conduit (4), wherein the outlet of the EGR cooler assembly (1) is communicated with the inlet of the intake pipe (2) through the EGR exhaust gas conduit (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020338912.0U CN212337491U (en) | 2020-03-18 | 2020-03-18 | EGR cooler with improved exhaust gas mixing and cooling effects |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020338912.0U CN212337491U (en) | 2020-03-18 | 2020-03-18 | EGR cooler with improved exhaust gas mixing and cooling effects |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212337491U true CN212337491U (en) | 2021-01-12 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020338912.0U Active CN212337491U (en) | 2020-03-18 | 2020-03-18 | EGR cooler with improved exhaust gas mixing and cooling effects |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212337491U (en) |
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2020
- 2020-03-18 CN CN202020338912.0U patent/CN212337491U/en active Active
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