Engine drainage header pipe, engine EGR cooling system and engine
By installing EGR coolers on the engine drainage main pipe and reducing pipeline length, the problem of increased cost and pipeline space is solved, achieving a more compact and efficient cooling system design.
Patent Information
- Application Number
- CN202421535060.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-01
- Publication Date
- 2025-02-28
- Estimated Expiration
- 2034-07-01
AI Technical Summary
Using a bracket to fix the EGR cooler increases the cost, and the EGR cooler is connected to the water pump through a long pipe, taking up more space.
An engine drainage main pipe is designed, including an EGR cooler mounting structure, a first liquid withdrawal port and a first liquid return port. The EGR cooler is installed on the engine drainage main pipe, reducing the use of the bracket and the length of the pipeline through a compact design.
No additional bracket is required to install EGR coolers, reducing cost and space consumption, and improving structure compactness and smooth cooling fluid flow by shortening the length of the pipe.
Smart Images
Figure CN222542547U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of engines, in particular to an engine drainage main pipe, an engine EGR cooling system and an engine. Background Art
[0002] The EGR cooler is an important component in the engine emission control system, mainly used to reduce the temperature of the engine exhaust gas recirculation (EGR) gas to reduce the generation of nitrogen oxides (NOx) and reduce emission pollutants. The EGR cooler includes an air inlet, an air outlet, a liquid inlet and a liquid outlet, wherein the liquid inlet is connected to the coolant, the coolant flows into the EGR cooler from the liquid inlet and is discharged from the liquid outlet, and the engine exhaust gas recirculation flows into the EGR cooler from the air inlet and is discharged from the air outlet. When the engine exhaust gas recirculation passes through the EGR cooler, it exchanges heat with the coolant flowing through the EGR cooler, thereby reducing the temperature of the engine exhaust gas recirculation.
[0003] When setting up the EGR cooler, a bracket is often used to fix the EGR cooler on the engine, which generates additional costs. The EGR cooler is connected to the water pump through a pipeline to obtain coolant. The connecting pipeline is long and occupies more space. Utility Model Content
[0004] In view of this, the utility model provides an engine drain main pipe, an engine EGR cooling system and an engine to solve the problem that using a bracket to fix the EGR cooler on the engine generates additional costs and the EGR cooler is connected to a water pump through a pipeline to take coolant, and the connecting pipeline is long and occupies more space.
[0005] In a first aspect, the utility model provides an engine drain manifold, which is provided with a cavity, an EGR cooler mounting structure, a first liquid inlet and a first liquid return inlet; wherein,
[0006] The EGR cooler mounting structure is suitable for mounting an EGR cooler;
[0007] The first liquid intake port is in communication with the cavity and is adapted to be in communication with the liquid inlet of the EGR cooler;
[0008] The first liquid return port is in communication with the cavity and is adapted to be in communication with a liquid outlet of the EGR cooler.
[0009] Beneficial effect: The EGR cooler is connected to the EGR cooler mounting structure, so that the EGR cooler is mounted on the engine drain main pipe. No additional bracket is required when installing the EGR cooler, which saves the cost and space generated by the bracket and makes the structure more compact.
[0010] Moreover, since the EGR cooler is installed on the engine drain main pipe, the first liquid intake port is close to the liquid inlet of the EGR cooler, and the first liquid return port is close to the liquid outlet of the EGR cooler. Compared with taking coolant from the water pump through the pipeline, the length of the pipeline is greatly shortened, thereby reducing the space occupied by the pipeline and making the structure more compact.
[0011] In an optional embodiment, a partition is further provided and connected to the cavity, the partition divides the cavity into a liquid taking cavity and a liquid returning cavity, the first liquid taking port is connected to the liquid taking cavity, and the first liquid returning port is connected to the liquid returning cavity.
[0012] Beneficial effect: The partition separates the cavity into a liquid intake cavity and a liquid return cavity. The EGR cooler takes coolant from the liquid intake cavity and returns the coolant to the liquid return cavity, thereby avoiding mutual interference between the coolant when taking and returning the coolant in the cavity, making the coolant flow smoother.
[0013] In an optional embodiment, a second liquid intake port and a second liquid return port are further provided, and the second liquid intake port and the second liquid return port are respectively connected to the cavity.
[0014] Beneficial effect: other equipment can take the coolant from the second liquid taking port, and then return the coolant from the second liquid return port, which can meet the use of other equipment that needs to take the coolant.
[0015] In an optional embodiment, a first cover plate, a liquid intake joint, a second cover plate and a liquid return joint are also provided, and the first cover plate and the liquid intake joint can be selectively installed on the second liquid intake port; the second cover plate and the liquid return joint can be selectively installed on the second liquid return port.
[0016] Beneficial effect: When the second liquid intake port and the second liquid return port are used, the first cover plate and the second cover plate are removed, the liquid intake joint is installed at the second liquid intake port, and the liquid return joint is installed at the second liquid return port. When the second liquid intake port and the second liquid return port are not used, the liquid intake joint and the liquid return joint are removed, and the first cover plate and the second cover plate are reinstalled, so as to close the second liquid intake port and the second liquid return port. Whether to use the second liquid intake port and the second liquid return port can be selected according to needs, so as to ensure that the engine drain main pipe is used in multiple scenarios, thereby increasing the versatility of the engine drain main pipe.
[0017] In a second aspect, the utility model further provides an EGR cooling system, comprising:
[0018] An engine drain main pipe, which is configured as any of the above engine drain main pipes;
[0019] An EGR cooler is connected to the EGR cooler mounting structure of the engine drain main pipe.
[0020] Beneficial effects: Since the EGR cooling system includes an engine drain main pipe, it has the same effects as the engine drain main pipe and will not be described in detail here.
[0021] In an optional embodiment, the EGR cooler mounting structure includes a first connecting hole opened on the engine drain main pipe, a second connecting hole is provided on the EGR cooler, and the EGR cooler and the engine drain main pipe are connected by a connecting piece inserted into the first connecting hole and the second connecting hole.
[0022] Beneficial effect: after aligning the first connecting hole with the second connecting hole, the connecting piece is inserted into the first connecting hole and the second connecting hole, so that the EGR cooler is installed on the engine drainage main pipe, which is easy to install and occupies less space.
[0023] In an optional embodiment, the first liquid intake port is configured as a plug hole, and the liquid inlet of the EGR cooler is provided with a plug connector, and the plug connector is suitable for being plugged into the plug hole.
[0024] Beneficial effect: The liquid inlet of the EGR cooler is connected to the first liquid intake port of the engine drain main pipe by means of pipe plugging, which not only makes installation more convenient, but also saves the pipe between the liquid inlet of the EGR cooler and the first liquid intake port of the engine drain main pipe, further reducing the occupied space.
[0025] In an optional embodiment, the plug connector is configured as a dog bone pipe connector.
[0026] Beneficial effect: Since the plug connector is configured as a dog-bone pipe connector, when the plug connector is inserted into the plug hole, even if there is a certain deviation between the axes of the plug connector and the plug hole, the tightness of the connection between the plug connector and the plug hole can be ensured, and the operating space is larger when installing the EGR cooler, which effectively avoids leakage problems caused by tilted installation of the pipeline.
[0027] In an optional implementation, it also includes:
[0028] A liquid outlet pipe joint connected to a liquid outlet of the EGR cooler;
[0029] The liquid return pipe joint is connected to the first liquid return port, the liquid outlet pipe joint is communicated with the liquid return pipe joint through a liquid return pipe, and the liquid outlet direction of the liquid outlet pipe joint is the same as the liquid inlet direction of the liquid return pipe joint.
[0030] Beneficial effect: After the two ends of the liquid pipe are respectively connected to the liquid outlet pipe joint and the liquid return pipe joint, the axis of the liquid pipe does not deviate, that is, the liquid pipe can be a straight pipe, which is more convenient to install and occupies less space.
[0031] In a third aspect, the utility model further provides an engine, comprising: any of the above-mentioned engine drain manifold or engine EGR cooling system.
[0032] Beneficial effect: Because the engine includes an engine drain manifold or an engine EGR cooling system, it has the same effect as the engine drain manifold or the engine EGR cooling system and is not described in detail here. BRIEF DESCRIPTION OF THE DRAWINGS
[0033] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0034] Figure 1 This is a schematic structural diagram of an engine EGR cooling system according to an embodiment of the utility model;
[0035] Figure 2 This is a schematic diagram of the internal structure of an engine drainage main pipe according to an embodiment of the utility model;
[0036] Figure 3 This is a schematic diagram of the external structure of an engine drainage main pipe according to an embodiment of the utility model;
[0037] Figure 4 for Figure 3 A magnified image of point A;
[0038] Figure 5 This is a structural schematic diagram of another engine EGR cooling system according to an embodiment of the utility model;
[0039] Figure 6 for Figure 5 The enlarged view of point B;
[0040] Figure 7 for Figure 5 Enlarged view of point C;
[0041] Figure 8 This is a schematic diagram of the back structure of another engine EGR cooling system according to an embodiment of the utility model.
[0042] Description of reference numerals:
[0043] 1. Engine drain main pipe; 2. EGR cooler; 3. First liquid intake port; 4. Liquid return main port; 5. Partition; 6. Liquid intake chamber; 7. Liquid return chamber; 8. Second liquid intake port; 9. Liquid return seat; 10. First cover plate; 11. Liquid intake connector; 12. Second cover plate; 13. Liquid return connector; 14. First connecting hole; 15. Second connecting hole; 16. Plug connector; 17. Liquid outlet pipe connector; 18. Liquid return pipe connector; 19. Liquid pipe; 20. Liquid collection port; 21. Liquid discharge port; 22. Liquid intake seat. DETAILED DESCRIPTION
[0044] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.
[0045] Combine the following Figures 1 to 8 , describing an embodiment of the utility model.
[0046] The engine drainage main pipe 1 is provided with a cavity, a liquid collecting port 20 and a liquid discharge port 21. The liquid collecting port 20 and the liquid discharge port 21 are both connected to the cavity, the liquid collecting port 20 is connected to the coolant outlet of the engine cylinder, and the liquid discharge port 21 is connected to the cooling channel port of the radiator. In this way, under the action of the water pump, the coolant flows through the engine cylinder and then flows out from the coolant outlet of the engine cylinder, and then flows into the cavity from the liquid collecting port 20. The coolant in the cavity flows out from the liquid discharge port 21, and then flows into the radiator from the cooling channel port of the radiator, and the radiator performs heat dissipation and temperature reduction treatment on the coolant.
[0047] According to an embodiment of the utility model, on the one hand, an engine drain main pipe is provided, such as Figure 1 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 As shown, an EGR cooler mounting structure is provided on the engine drain main pipe 1, and the EGR cooler 2 is connected to the EGR cooler mounting structure, so that the EGR cooler 2 is installed on the engine drain main pipe 1. When installing the EGR cooler 2, no additional bracket is required, which saves the cost and space generated by the bracket and makes the structure more compact.
[0048] The first liquid taking port 3 and the first liquid return port are also provided on the engine drainage main pipe 1, and the first liquid taking port 3 and the first liquid return port are connected to the cavity respectively. The first liquid taking port 3 is connected to the liquid inlet of the EGR cooler 2, and the first liquid return port is connected to the liquid outlet of the EGR cooler 2. In this way, the coolant in the cavity flows out from the first liquid taking port 3, and then enters the EGR cooler 2 from the liquid inlet. The coolant in the EGR cooler 2 flows out from the liquid outlet, and then flows back into the cavity from the first liquid return port. When the engine exhaust gas recirculation flows through the EGR cooler 2, it exchanges heat with the coolant flowing through the EGR cooler 2, thereby reducing the temperature of the engine exhaust gas recirculation. That is, the EGR cooler 2 takes the coolant in the cavity of the engine drainage main pipe 1. Since the EGR cooler 2 is installed on the engine drainage main pipe 1, the first liquid taking port 3 is close to the liquid inlet of the EGR cooler 2, and the first liquid return port is close to the liquid outlet of the EGR cooler 2. Compared with taking coolant from a water pump through a pipeline, the length of the pipeline is shortened to a great extent, thereby reducing the space occupied by the pipeline and making the structure more compact.
[0049] It is worth noting that, although the temperature of the coolant increases to a certain extent due to heat exchange when flowing through the engine block, the temperature is still sufficient to meet the cooling demand of the EGR cooler 2 .
[0050] In some embodiments, Figure 2 As shown, the engine drainage main pipe 1 is also provided with a partition 5, which is arranged in the cavity and separates the partition 5. The cavity is divided into a liquid collection cavity 6 and a liquid return cavity 7 by the partition 5. The liquid collection port 20 is connected to the liquid collection cavity 6, and the liquid discharge port 21 is connected to the liquid return cavity 7. After the first liquid collection port 3 is opened, the first liquid collection port 3 is connected to the liquid collection cavity 6, and after the first liquid return port is opened, the first liquid return port is connected to the liquid return cavity 7.
[0051] In this way, under the action of the water pump, the coolant flows through the engine cylinder and then flows out from the coolant outlet of the engine cylinder, and then flows into the liquid collection chamber 6 from the liquid collecting port 20. The coolant in the liquid collection chamber 6 flows out from the first liquid collection port 3, and then enters the EGR cooler 2 from the liquid inlet. The coolant in the EGR cooler 2 flows out from the liquid outlet, and then enters the liquid return chamber 7 from the first liquid return port. The coolant in the liquid return chamber 7 flows out from the drain port 21, and then flows into the radiator from the cooling channel port of the radiator, and the radiator performs heat dissipation and temperature reduction treatment on the coolant. When the engine exhaust gas recirculation passes through the EGR cooler 2, it exchanges heat with the coolant flowing through the EGR cooler 2, thereby reducing the temperature of the engine exhaust gas recirculation. Since the partition 5 divides the cavity into the liquid collection chamber 6 and the liquid return chamber 7, it is prevented that the coolant interferes with each other when taking liquid and returning liquid in the cavity, so that the coolant flows more smoothly.
[0052] In some embodiments, Figure 1-Figure 3As shown, the engine drain main pipe 1 is also provided with a second liquid intake port 8 and a second liquid return port. After the second liquid intake port 8 is provided, the second liquid intake port 8 is connected to the liquid intake chamber 6 of the cavity. A liquid return main port 4 connected to the liquid intake chamber 6 of the cavity is provided on the engine drain main pipe 1. After the second liquid return port is provided, the second liquid return port and the first liquid return port are respectively connected to the liquid return main port 4. When other equipment that needs to take coolant is used, such as a hydraulic retarder, the coolant inlet of the hydraulic retarder can be connected to the second liquid intake port 8, and the coolant outlet of the hydraulic retarder can be connected to the second liquid return port. The coolant in the liquid intake chamber 6 flows out from the second liquid intake port 8, and then enters the hydraulic retarder from the coolant inlet. The coolant in the hydraulic retarder flows out from the coolant outlet, and then enters the liquid return chamber 7 from the second liquid return port, so that the engine drain main pipe 1 provides coolant for the hydraulic retarder. In this way, the second liquid taking port 8 and the second liquid return port can meet the use of other equipment that needs to take coolant.
[0053] It is worth noting that a plurality of second liquid taking ports 8 and second liquid return ports can be provided correspondingly to achieve the use of more equipment that needs to take coolant.
[0054] In some embodiments, Figure 1 and Figure 5 As shown, a first cover plate 10, a liquid collection joint 11, a second cover plate 12 and a liquid return joint 13 are also provided. The first cover plate 10 and the liquid collection joint 11 can be selectively installed at the second liquid collection port 8, that is, the first cover plate 10 is detachably installed at the second liquid collection port 8, and at this time, the first cover plate 10 closes the second liquid collection port 8. When the second liquid collection port 8 needs to be used, the first cover plate 10 is removed, and the liquid collection joint 11 is detachably installed at the second liquid collection port 8, and at this time, the liquid collection joint 11 is connected with the second liquid collection port 8. After use, the liquid collection joint 11 is removed, and the first cover plate 10 is reinstalled. The second cover plate 12 and the liquid return joint 13 can be selectively installed at the second liquid return port, that is, the second cover plate 12 is detachably installed at the second liquid return port, and at this time, the second cover plate 12 closes the second liquid return port. When the second liquid return port is needed, the second cover plate 12 is removed, and the liquid return connector 13 is detachably installed at the second liquid return port. At this time, the liquid return connector 13 is connected to the second liquid return port. After use, the liquid return connector 13 is removed and the second cover plate 12 is reinstalled.
[0055] For example, in the scenario of using a hydraulic retarder, the first cover plate 10 and the second cover plate 12 are removed, the liquid intake joint 11 is installed at the second liquid intake port 8, and the liquid return joint 13 is installed at the second liquid return port. The coolant inlet of the hydraulic retarder is connected to the liquid intake joint 11 through a pipeline, and the coolant outlet of the hydraulic retarder is connected to the liquid return joint 13 through a pipeline. The coolant in the liquid intake chamber 6 flows out from the liquid intake joint 11, and then enters the hydraulic retarder from the coolant inlet. The coolant in the hydraulic retarder flows out from the coolant outlet, and then enters the liquid return chamber 7 from the liquid return joint 13, so that the engine drain main pipe 1 provides coolant for the hydraulic retarder.
[0056] When the hydraulic retarder is not used, the liquid intake joint 11 and the liquid return joint 13 are disassembled, and the first cover plate 10 and the second cover plate 12 are reinstalled to close the second liquid intake port 8 and the second liquid return port.
[0057] With such arrangement, it is possible to choose whether to use the second liquid intake port 8 and the second liquid return port according to demand, thereby ensuring that the engine drain main pipe 1 can be used in multiple scenarios, thereby increasing the versatility of the engine drain main pipe 1.
[0058] In some embodiments, a liquid collection seat 22 and a liquid return seat 9 are provided on the engine drain main pipe 1. The second liquid collection port 8 is provided on the liquid collection seat 22 and communicates with the liquid collection cavity 6 through a channel in the liquid collection seat 22. The first liquid return port and the second liquid return port are provided on the liquid return seat 9, and both the first liquid return port and the second liquid return port are communicated with the liquid return main port 4 through a channel in the liquid return seat 9.
[0059] Regarding the connection between the first cover plate 10, the liquid collection joint 11, the second cover plate 12 and the liquid return joint 13, threaded mounting holes can be opened on the liquid collection seat 22 and the liquid return seat 9, and mounting holes are respectively set on the first cover plate 10, the liquid collection joint 11, the second cover plate 12 and the liquid return joint 13. After the bolts are passed through the mounting holes and screwed into the threaded mounting holes, the first cover plate 10 or the liquid collection joint 11 can be installed at the second liquid collection port 8, or the second cover plate 12 or the liquid return joint 13 can be installed at the second liquid return port.
[0060] like Figure 5 As shown, when there is no liquid collection seat 22, the second liquid collection port 8 is directly opened on the engine drainage main pipe 1. At this time, the first cover plate 10 or the liquid collection connector 11 is connected to the engine drainage main pipe 1 using a threaded connection to close or connect the second liquid collection port 8.
[0061] According to an embodiment of the utility model, on the other hand, an engine EGR cooling system is provided, comprising: an engine drain manifold 1 and an EGR cooler 2. The engine drain manifold 1 is set as any of the above engine drain manifolds 1, and the EGR cooler 2 is connected to the EGR cooler mounting structure of the engine drain manifold 1. The technical effect of the engine EGR cooling system is consistent with the technical effect produced by the engine drain manifold 1, so it will not be repeated.
[0062] In some embodiments, the EGR cooler mounting structure includes a first connecting hole 14 opened on the engine drain main pipe 1, and a second connecting hole 15 is provided on the EGR cooler 2. After the first connecting hole 14 and the second connecting hole 15 are aligned, the connecting piece is inserted into the first connecting hole 14 and the second connecting hole 15, so that the EGR cooler 2 is installed on the engine drain main pipe 1, which is easy to install and occupies less space.
[0063] Specifically, the first connection hole 14 may be a threaded hole, the second connection hole 15 may be a mounting through hole, and the connection piece may be a fixing bolt. After aligning the mounting through hole provided on the EGR cooler 2 with the threaded hole provided on the engine drain manifold 1, the fixing bolt is passed through the mounting through hole and screwed onto the threaded hole, thereby mounting the EGR cooler 2 on the engine drain manifold 1.
[0064] In some embodiments, the first liquid intake port 3 is set as a plug hole and is located at the top of the engine drainage main pipe 1, the liquid inlet of the EGR cooler 2 is set at the bottom of the EGR cooler 2, and a plug connector 16 is set at the liquid inlet of the EGR cooler 2. The plug connector 16 can be inserted in the plug hole, so as to complete the connection between the plug hole and the liquid inlet. When the EGR cooler 2 is installed on the engine drainage main pipe 1, the plug connector 16 at the bottom of the EGR cooler 2 is first inserted into the plug hole, at this time, the first connection hole 14 on the engine drainage main pipe 1 is aligned with the second connection hole 15 on the EGR cooler 2, and the connector is inserted into the first connection hole 14 and the second connection hole 15. In this way, not only the EGR cooler 2 is installed on the engine drainage main pipe 1, but also the liquid inlet of the EGR cooler 2 is connected with the first liquid intake port 3 of the engine drainage main pipe 1. Not only is the installation more convenient, but also the pipeline between the liquid inlet of the EGR cooler 2 and the first liquid intake port 3 of the engine drainage main pipe 1 is saved, further reducing the occupied space.
[0065] As an optional embodiment, the plug connector 16 is set as a dog bone pipe connector, and the plug hole is set as a pipe connection hole corresponding to the dog bone pipe connector. The dog bone pipe connector is a specially designed pipe connector, which is mainly used in pipelines such as engines, and compensates for the axial and radial deviations between the hard pipe orifices at both ends. Its design includes a first straight pipe section, a transition oblique pipe section and a second straight pipe section with the same pipe diameter and connected in sequence, wherein the axes of the first straight pipe section and the second straight pipe section are parallel but not colinear to adapt to the deviation of the pipeline. The periphery of the first straight pipe section and the second straight pipe section is provided with an annular protrusion, and the periphery of the annular protrusion is provided with an annular groove for matching and fixing with the pipeline. The cross section of the annular protrusion may be a semicircular arc structure to adapt to different installation requirements. The connection between the first straight pipe section and the transition oblique pipe section, and between the second straight pipe section and the transition oblique pipe section may adopt a camber transition connection to improve the smoothness and strength of the connection.
[0066] Since the plug connector 16 is configured as a dog-bone pipe connector, when the plug connector 16 is inserted into the plug hole, even if there is a certain deviation between the axis of the plug connector 16 and the plug hole, the tightness of the connection between the plug connector 16 and the plug hole can be ensured, and the operating space is larger when installing the EGR cooler 2, which effectively avoids leakage problems caused by tilted installation of the pipeline.
[0067] In some embodiments, the engine EGR cooling system further includes: a liquid outlet pipe joint 17 and a liquid return pipe joint 18. The liquid outlet pipe joint 17 is connected to the liquid outlet of the EGR cooler 2, and the liquid return pipe joint 18 is connected to the first liquid return port. The first end of the liquid pipe 19 is connected to the liquid outlet pipe joint 17, and the second end of the liquid return pipe 19 is connected to the liquid return pipe joint 18. Thus, the liquid outlet on the EGR cooler 2 is connected to the first liquid return port on the engine drain main pipe 1 through the liquid pipe 19.
[0068] The liquid outlet direction of the liquid outlet pipe joint 17 is the same as the liquid inlet direction of the liquid return pipe joint 18, that is, the axis of the liquid outlet pipe joint 17 is coaxial with the axis of the liquid return pipe joint 18. In this way, after the two ends of the liquid pipe 19 are respectively connected to the liquid outlet pipe joint 17 and the liquid return pipe joint 18, the axis of the liquid pipe 19 does not deviate. That is, the liquid pipe 19 can be a straight pipe, which is more convenient to install and occupies less space.
[0069] According to an embodiment of the utility model, in another aspect, an engine is provided, comprising: any of the above-described engine drain manifold or engine EGR cooling system. The technical effect produced by the engine is consistent with the technical effect produced by the engine drain manifold or engine EGR cooling system, so it will not be repeated.
[0070] Although the embodiments of the present invention are described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations are all within the scope defined by the appended claims.
Claims
1. An engine drain manifold, characterized in that: A cavity, an EGR cooler mounting structure, a first liquid intake port (3) and a first liquid return port are provided; wherein, The EGR cooler mounting structure is suitable for mounting an EGR cooler (2); The first liquid intake port (3) is in communication with the cavity and is suitable for being in communication with the liquid inlet of the EGR cooler (2); The first liquid return port is in communication with the cavity and is suitable for being in communication with the liquid outlet of the EGR cooler (2).
2. The engine drain manifold according to claim 1, characterized in that: A partition (5) is also provided and connected to the cavity, wherein the partition (5) divides the cavity into a liquid taking cavity (6) and a liquid return cavity (7), wherein the first liquid taking port (3) is connected to the liquid taking cavity (6), and the first liquid return port is connected to the liquid return cavity (7).
3. The engine drain manifold according to claim 1 or 2, characterized in that: A second liquid intake port (8) and a second liquid return port are also provided, and the second liquid intake port (8) and the second liquid return port are respectively connected to the cavity.
4. The engine drain manifold according to claim 3, characterized in that: A first cover plate (10), a liquid taking joint (11), a second cover plate (12) and a liquid return joint (13) are also provided. The first cover plate (10) and the liquid taking joint (11) can be selectively installed on the second liquid taking port (8); the second cover plate (12) and the liquid return joint (13) can be selectively installed on the second liquid return port.
5. An engine EGR cooling system, characterized in that: include: An engine drain main pipe (1) is configured as the engine drain main pipe according to any one of claims 1 to 4; An EGR cooler (2) is connected to the EGR cooler mounting structure of the engine drain main pipe (1).
6. The engine EGR cooling system according to claim 5, characterized in that: The EGR cooler installation structure comprises a first connection hole (14) provided on the engine drain main pipe (1), a second connection hole (15) is provided on the EGR cooler (2), and the EGR cooler (2) and the engine drain main pipe (1) are connected via a connecting piece inserted into the first connection hole (14) and the second connection hole (15).
7. The engine EGR cooling system according to claim 5, characterized in that: The first liquid intake port (3) is arranged as a plug-in hole, and the liquid inlet of the EGR cooler (2) is provided with a plug connector (16), and the plug connector (16) is suitable for being plugged into the plug-in hole.
8. The engine EGR cooling system according to claim 7, characterized in that: The plug connector (16) is configured as a dog bone pipe connector.
9. The engine EGR cooling system according to claim 5, characterized in that: Also includes: A liquid outlet pipe joint (17) connected to the liquid outlet of the EGR cooler (2); The liquid return pipe joint (18) is connected to the first liquid return port, the liquid outlet pipe joint (17) is connected to the liquid return pipe joint (18) via a liquid return pipe (19), and the liquid outlet direction of the liquid outlet pipe joint is the same as the liquid inlet direction of the liquid return pipe joint.
10. An engine, characterized in that: include: An engine drain manifold (1) as claimed in any one of claims 1 to 4 or an engine EGR cooling system as claimed in any one of claims 5 to 9.