Engine cooling water jacket structure and engine
阅读说明:本技术 一种发动机冷却水套结构及发动机 (Engine cooling water jacket structure and engine ) 是由 何炎迎 于 2019-04-11 设计创作,主要内容包括:本发明提供的一种发动机冷却水套结构,其包括设于多气缸缸体外的缸体水套及设于缸体水套顶端的缸盖水套,缸体水套包括第一缸体水套、设于气缸缸孔外的第二缸体水套和第三缸体水套,缸盖水套包括冷却燃烧室的第一缸盖水套、冷却排气歧管的第二缸盖水套、以及连通第二缸体水套和第三缸体水套的出水口的第三缸盖水套,第一缸体水套的出水口分别连通第二缸体水套、第一缸盖水套和第二缸盖水套,第一缸盖水套和第二缸盖水套的出水口连通第三缸体水套,经第一缸体水套流入第二缸体水套的冷却液经第三缸盖水套排出,经第一缸体水套流入第一缸盖水套和第二缸盖水套的冷却液经第三缸体水套流入第三缸盖水套并排出。本发明还提供了一种发动机。(The invention provides an engine cooling water jacket structure, which comprises a cylinder body water jacket arranged outside a multi-cylinder body and a cylinder cover water jacket arranged at the top end of the cylinder body water jacket, wherein the cylinder body water jacket comprises a first cylinder body water jacket, a second cylinder body water jacket and a third cylinder body water jacket which are arranged outside a cylinder hole of a cylinder, the cylinder cover water jacket comprises a first cylinder cover water jacket for cooling a combustion chamber and a second cylinder cover water jacket for cooling an exhaust manifold, and the third cylinder cover water jacket is communicated with the water outlets of the second cylinder water jacket and the third cylinder water jacket, the water outlet of the first cylinder water jacket is respectively communicated with the second cylinder water jacket, the first cylinder water jacket and the second cylinder water jacket, the water outlets of the first cylinder water jacket and the second cylinder water jacket are communicated with the third cylinder water jacket, cooling liquid flowing into the second cylinder water jacket through the first cylinder water jacket is discharged through the third cylinder water jacket, and the cooling liquid flowing into the first cylinder water jacket and the second cylinder water jacket through the first cylinder water jacket flows into the third cylinder water jacket and is discharged through the third cylinder water jacket. The invention also provides an engine.)
1. The utility model provides an engine cooling water jacket structure, its is including locating outer cylinder body water jacket (10) of multicylinder cylinder body and locating cylinder cover water jacket (20) on cylinder body water jacket (10) top, its characterized in that, cylinder body water jacket (10) include first cylinder body water jacket (11), locate second cylinder body water jacket (12) and third cylinder body water jacket (13) outside the cylinder bore, cylinder cover water jacket (20) are including first cylinder cover water jacket (21) of cooling combustion chamber, the second cylinder cover water jacket (22) of cooling exhaust manifold and communicate second cylinder body water jacket (12) and the third cylinder cover water jacket (23) of the delivery port of third cylinder body water jacket (13), the delivery port of first cylinder body water jacket (11) communicates respectively second cylinder body water jacket (12), first cylinder cover water jacket (21) and second cylinder cover water jacket (22), first cylinder cover water jacket (21) and the delivery port of second cylinder cover water jacket (22) communicate third cylinder cover water jacket (23) of delivery port (13) And the cooling liquid flowing into the second cylinder water jacket (12) through the first cylinder water jacket (11) is discharged through the third cylinder water jacket (23), and the cooling liquid flowing into the first cylinder water jacket (21) and the second cylinder water jacket (22) through the first cylinder water jacket (11) flows into the third cylinder water jacket (23) through the third cylinder water jacket (13) and is discharged.
2. The engine cooling water jacket structure according to claim 1, wherein the first block water jacket (11) is a water pump volute integrated at a front end of a cylinder block, and the second block water jacket (12) and the third block water jacket (13) are independent from each other.
3. The engine cooling water jacket structure according to claim 1, wherein the first head water jacket (21) includes a first cooling passage (21a) communicating with a water inlet of the first head water jacket (21), a second cooling passage (21b) communicating with the first cooling passage (21a), a third cooling passage (21c) formed by branching of the second cooling passage (21b), and a return passage (21d) formed at an outlet end of the third cooling passage (21c), the third cooling passage (21c) is distributed outside each combustion chamber of the engine, and a water outlet of the return passage (21d) communicates with the third head water jacket (13).
4. The engine cooling water jacket structure according to claim 3, characterized in that the third cooling passage (21c) is a "lateral cooling passage" provided between an outlet of the second cooling passage (21b) and an inlet of the return passage (21 d).
5. The engine cooling water jacket structure according to claim 4, wherein the outlets of the second cooling passages (21b) are plural and have the same inside diameter, and the outlets of the return passages (21d) are in one-to-one correspondence with cylinder blocks.
6. The engine cooling water jacket structure according to claim 5, wherein the second block water jacket (22) includes a first flow passage (22a) communicating with the first block water jacket (11), a second flow passage (22b) and a third flow passage (22c) formed by branching from a water outlet of the first flow passage (22a), and a fourth flow passage (22d) formed by merging ends of the second flow passage (22b) and the third flow passage (22c), the water outlet of the fourth flow passage (22d) is communicated with the third cooling channel (21c), the cooling liquid flowing into the first flow passage (22a) flows into the second flow passage (22b) and the third flow passage (22c), flows into the third cooling passage (21c) after merging into the fourth flow passage (22d), and flows into the third block water jacket (13) through the fourth cooling passage (21 d).
7. The engine cooling water jacket structure according to claim 6, wherein the exhaust manifold is integrated on the cylinder head, the exhaust manifold being sandwiched between the second flow passage (22b) and the third flow passage (22 c).
8. The engine cooling water jacket structure according to claim 6 or 7, characterized in that the engine cooling water jacket structure further includes a cylinder head gasket (30) that communicates the head water jacket (20) with the block water jacket (10), the cylinder head gasket (30) including a first water feed port (31) that communicates the first head water jacket (21) with the first block water jacket (11) and a second water feed port (32) that communicates the second head water jacket (22) with the first block water jacket (11).
9. The engine cooling water jacket structure according to claim 8, wherein the cylinder head gasket (30) includes a third water feed port (33) that communicates the outlet port of the second block water jacket (12) with the inlet port of the third block water jacket (23), a water return port (34) that communicates the outlet port of the return passage (21d) with the inlet port of the third block water jacket (13), and a fourth water feed port (35) that communicates the outlet port of the third block water jacket (13) with the inlet port of the third block water jacket (23).
10. An engine characterized by comprising the engine cooling water jacket structure according to any one of claims 1 to 9.
Technical Field
The invention relates to the field of cooling of a multi-cylinder internal combustion engine cylinder body, in particular to an engine cooling water jacket structure and an engine.
Background
The engine water jacket, generally only need to be cooled the design coolant passage, this design has the problem: the cylinders of the engine cannot be uniformly cooled. In the existing technical scheme, the problem that a cylinder body and a cylinder cover can be cooled and radiated is generally only considered, and the problem is solved by designing a layer of cooling liquid jacket outside a cylinder, although the scheme is simple in structure, the realized function is single, and uniform cooling of each cylinder on the cylinder cover cannot be realized, so that unnecessary heat loss on the cylinder cover is caused, the scheme is limited by the total performance (namely the total performance of cooling) of a water pump, the heat efficiency cannot be further improved by improving the compression ratio of an engine, and the potential of reducing the oil consumption of the engine is further limited.
Therefore, in the prior art, in order to ensure that all cylinders can be sufficiently cooled, the purpose is usually achieved by increasing the flow rate of the water pump, but partial cylinders are excessively cooled, so that unnecessary energy loss is caused; meanwhile, because unnecessary heat dissipation of the cylinder block is difficult to avoid, and the cooling requirement of the cylinder head is generally higher than that of the cylinder block, it is very important how to design a cooling liquid jacket structure on the cylinder head to realize uniform heat dissipation of all cylinders and meet the cooling requirement of the cylinder head.
Disclosure of Invention
In view of the above, it is necessary to provide an engine cooling water jacket structure and an engine, which can meet the cooling requirement of the cylinder head itself and ensure uniform heat dissipation of each cylinder.
The invention provides an engine cooling water jacket structure, which comprises a cylinder body water jacket arranged outside a multi-cylinder body and a cylinder cover water jacket arranged at the top end of the cylinder body water jacket, wherein the cylinder body water jacket comprises a first cylinder body water jacket, a second cylinder body water jacket and a third cylinder body water jacket which are arranged outside a cylinder hole of a cylinder, the cylinder cover water jacket comprises a first cylinder cover water jacket for cooling a combustion chamber, a second cylinder cover water jacket for cooling an exhaust manifold and a third cylinder cover water jacket for communicating the second cylinder body water jacket with a water outlet of the third cylinder body water jacket, the water outlet of the first cylinder body water jacket is communicated with the second cylinder body water jacket, the first cylinder cover water jacket and the second cylinder cover water jacket, the water outlets of the first cylinder cover water jacket and the second cylinder cover water jacket are communicated with the third cylinder cover water jacket, and cooling liquid flowing into the second cylinder body water jacket through the first cylinder body water jacket is discharged through the third cylinder cover water jacket, and the cooling liquid flowing into the first cylinder cover water jacket and the second cylinder cover water jacket through the first cylinder cover water jacket flows into the third cylinder cover water jacket through the third cylinder cover water jacket and is discharged.
Further, the first cylinder water jacket is a water pump volute integrated at the front end of the cylinder body, and the second cylinder water jacket and the third cylinder water jacket are independent from each other.
Further, the first cylinder cover water jacket comprises a first cooling channel communicated with a water inlet of the first cylinder cover water jacket, a second cooling channel communicated with the first cooling channel, a third cooling channel formed by shunting of the second cooling channel and a backflow channel formed at an outlet end of the third cooling channel, the third cooling channel is distributed outside each cylinder combustion chamber, and a water outlet of the backflow channel is communicated with the third cylinder water jacket.
Further, the third cooling passage is a "lateral cooling passage" provided between the outlet of the second cooling passage and the inlet of the return passage.
Furthermore, the outlets of the second cooling channels are multiple and have the same inner diameter, and the outlets of the backflow channels correspond to the cylinder bodies one to one.
Further, the second cylinder head water jacket includes a first flow passage communicated with the first cylinder head water jacket, a second flow passage and a third flow passage formed by branching from a water outlet of the first flow passage, and a fourth flow passage formed by merging ends of the second flow passage and the third flow passage, a water outlet of the fourth flow passage is communicated with the third cooling passage, and the coolant flowing into the first flow passage flows into the second flow passage and the third flow passage, flows into the third cooling passage after merging into the fourth flow passage, and flows into the third cylinder head water jacket through the fourth cooling passage.
Further, the exhaust manifold is integrated with the cylinder head, and the exhaust manifold is sandwiched between the second flow channel and the third flow channel.
Further, the engine cooling water jacket structure further comprises a cylinder gasket communicating the cylinder cover water jacket with the cylinder body water jacket, and the cylinder gasket comprises a first water feeding port communicating the first cylinder cover water jacket with the first cylinder body water jacket and a second water feeding port communicating the second cylinder cover water jacket with the first cylinder body water jacket.
Further, the cylinder gasket comprises a water outlet and a third water supply port which are communicated with a water outlet of the second cylinder water jacket and a water inlet of the third cylinder water jacket, a water return port which is communicated with a water outlet of the return channel and a water inlet of the third cylinder water jacket, and a fourth water supply port which is communicated with a water outlet of the third cylinder water jacket and a water inlet of the third cylinder water jacket.
The invention also provides an engine, which comprises the engine cooling water jacket structure.
In conclusion, the first cylinder body water jacket and the second cylinder body water jacket, the first cylinder cover water jacket and the second cylinder cover water jacket are connected in parallel through the design of the structures of the cylinder body water jacket and the cylinder cover water jacket, so that the cylinder hole of the cylinder body of the engine cylinder, the combustion chamber and the exhaust manifold are cooled; meanwhile, a second cooling channel for stabilizing hydraulic pressure is further arranged in the water jacket of the first cylinder body, and a third cooling channel for forming a transverse cooling channel is formed by shunting on the second cooling channel, so that the uniform cooling of each cylinder combustion chamber of the engine is realized, and the compression ratio and the thermal efficiency of the engine are improved.
The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, the present invention may be implemented in accordance with the content of the description, and in order to make the above and other objects, features, and advantages of the present invention more clearly understood, the following preferred embodiments are described in detail with reference to the accompanying drawings.
Drawings
FIG. 1 is a schematic structural diagram of an engine cooling water jacket structure provided by the present invention;
FIG. 2 is a schematic structural view of the block jacket of FIG. 1;
FIG. 3 is a schematic structural view of the cylinder head jacket of FIG. 1;
FIG. 4 is a schematic structural diagram of a cylinder head gasket in an engine cooling water jacket structure according to the present invention.
Detailed Description
To further explain the technical means and effects of the present invention adopted to achieve the predetermined objects, the present invention will be described in detail below with reference to the accompanying drawings and preferred embodiments.
As shown in fig. 1 to 4, the present invention provides an engine cooling water jacket structure including a
As shown in fig. 1 and 2, the
As shown in fig. 3, the
Referring to fig. 1 and 2 again, in the present invention, the water outlet of the first
Specifically, the first
In an embodiment of the present invention, the outlets of the
In the invention, the
Further, referring again to fig. 3, the second head water jacket 22 includes a
The present invention leads the isothermal water flow of the
In the invention, the engine cooling water jacket structure further comprises a cylinder gasket 30 communicating the cylinder
Specifically, as shown in fig. 4, the cylinder gasket 30 includes a first water inlet 31 for communicating the water outlet of the first cylinder
The invention also provides an engine, which comprises the engine cooling water jacket structure. With regard to the specific structure and content of the multi-cylinder engine and the specific connection structure and content of the cylinder and the cylinder block of the engine, reference may be made to the prior art, which will not be described herein in detail.
In summary, the invention realizes the cooling of the cylinder bore, the combustion chamber and the exhaust manifold of the cylinder body of the engine cylinder by the parallel connection of the first cylinder water jacket and the second cylinder water jacket, the first cylinder water jacket and the second cylinder water jacket through the design of the structures of the cylinder water jacket and the cylinder cover water jacket; meanwhile, a second cooling channel for stabilizing hydraulic pressure is further arranged in the water jacket of the first cylinder body, and a third cooling channel for forming a transverse cooling channel by shunting on the second cooling channel is further arranged, so that the uniform cooling of each cylinder combustion chamber of the engine is realized, and the compression ratio and the heat efficiency of the engine are improved; meanwhile, the flow of the cooling liquid flowing into the cylinder cover water jacket is controlled by adjusting the size of the through hole on the cylinder gasket between the cylinder body water jacket and the cylinder cover water jacket, the cooling effect on the cylinder hole of the cylinder body of the engine cylinder, the exhaust manifold and the combustion chamber is accurately controlled, and the oil consumption of the engine is reduced.
Although the present invention has been described with reference to the preferred embodiments, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.
- 上一篇:一种医用注射器针头装配设备
- 下一篇:汽缸盖