CN217501811U

CN217501811U - Cylinder head, engine and vehicle

Info

Publication number: CN217501811U
Application number: CN202221362695.4U
Authority: CN
Inventors: 张永静; 胡佳佳; 于鹏飞
Original assignee: Great Wall Motor Co Ltd
Current assignee: Great Wall Motor Co Ltd
Priority date: 2022-06-01
Filing date: 2022-06-01
Publication date: 2022-09-27
Anticipated expiration: 2032-06-01

Abstract

The utility model discloses a cylinder head, engine and vehicle, the cylinder head includes: a cylinder head main body; a water jacket, the water jacket comprising: the cylinder head comprises a main body cooling part, a collecting and discharging upper layer cooling part and a collecting and discharging lower layer cooling part, wherein the main body cooling part is arranged on a cylinder head main body, a liquid inlet is formed in the longitudinal end of the main body cooling part, the longitudinal end of the collecting and discharging upper layer cooling part is connected to the longitudinal other end of the main body cooling part, the collecting and discharging lower layer cooling part is connected to the longitudinal other end of the collecting and discharging upper layer cooling part, and a liquid outlet is formed in the collecting and discharging lower layer cooling part. The main body cooling part, the upper layer cooling part and the lower layer cooling part of the integrated exhaust can respectively correspond to different structures of the cylinder cover to carry out cooling or water return, the water jacket is integrally arranged and the flowing form of cooling liquid is reasonable, the cooling performance of the engine can be effectively improved, the thermal stress and the thermal deformation of the engine can be effectively reduced, the reliability of the engine is improved, the cost of the engine is reduced, and the market competitiveness is improved.

Description

Cylinder head, engine and vehicle

Technical Field

The utility model belongs to the technical field of the vehicle technique and specifically relates to a cylinder head, engine and vehicle are related to.

Background

At present, with the stricter regulations on oil consumption, the ultrahigh thermal efficiency of the internal combustion engine becomes a pursued target, the combustion speed is accelerated, the compression ratio is improved, the heat dissipation loss is reduced, and meanwhile, knocking is inhibited, which is an effective means for improving the thermal power conversion efficiency of the gasoline engine.

In the related technology, the jet ignition of the precombustion chamber can improve the combustion speed, inhibit the detonation and improve the compression ratio, and has obvious effect on improving the thermal efficiency of the gasoline engine; in addition, unburned intermediates in the precombustor can accelerate the combustion process.

However, the inner wall surface of the precombustion chamber body is contacted with combustion gas in the precombustion chamber, the outer wall surface is contacted with the combustion gas in the main combustion chamber, high-temperature gas transfers heat to the precombustion chamber body, so that the temperature of the precombustion chamber body is increased, the contact part of the precombustion chamber body and a cylinder cover can transfer the heat of the precombustion chamber body to the cylinder cover in a heat conduction mode, however, in the area near the jet hole of the precombustion chamber inner wall and the precombustion chamber, one surface of the area is heated by the high-temperature gas in the main combustion chamber, the other surface of the area is heated by the high-temperature gas in the inner cavity of the precombustion chamber, the heat can be transferred to the low-temperature wall surface area of the precombustion chamber body contacted with the cylinder cover only in a heat conduction mode, and due to the limitation of heat conductivity, the heat load of the partial structure is very high, and the problems of cracking and ablation are easily caused.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a cylinder head, this cylinder head can effectively improve the cooling performance of engine, can effectively reduce the thermal stress, the heat altered shape of engine, improves the reliability of engine, reduces the cost of engine simultaneously, improves market competition.

The utility model discloses an engine is further proposed.

The utility model discloses a vehicle is still further provided.

According to the utility model discloses a cylinder head, include: a cylinder head main body; a water jacket, the water jacket comprising: the cylinder head comprises a main body cooling part, an upper-layer cooling part and a lower-layer cooling part, wherein the upper-layer cooling part and the lower-layer cooling part are arranged in a collecting mode, the main body cooling part is arranged on the cylinder head main body, a liquid inlet is formed in the longitudinal end of the main body cooling part, the longitudinal end of the upper-layer cooling part is connected to the longitudinal other end of the main body cooling part, the lower-layer cooling part is connected to the vertical other end of the upper-layer cooling part in a collecting mode, and a liquid outlet is formed in the lower-layer cooling part in a collecting mode.

According to the utility model discloses a cylinder head, main part cooling part, collection row upper cooling part and collection row lower floor's cooling part can correspond the different structure of cylinder head respectively and cool off or the return water, and the water jacket's whole arrangement and the mobile form of coolant liquid are reasonable, can effectively improve the cooling performance of engine, can effectively reduce the thermal stress of engine, heat altered shape moreover, improve the reliability of engine, reduce the cost of engine simultaneously, improve market competition.

In some examples of the invention, the inlet comprises: the first liquid inlet and the second liquid inlet are arranged at intervals, and the first liquid inlet is positioned at two sides of the second liquid inlet; the main body cooling part includes: and the oil sprayer avoiding part is communicated with the second liquid inlet.

In some examples of the invention, the body cooling portion further comprises: and the two ends of the intake valve avoiding part are respectively communicated with the first liquid inlet and the fuel injector avoiding part.

In some examples of the invention, the body cooling portion further comprises: part is dodged to reposition of redundant personnel cooling channel and antechamber, reposition of redundant personnel cooling channel with first inlet intercommunication, and with the portion parallel arrangement is dodged to the (air) intake valve, the antechamber dodge the portion respectively with the sprayer dodge the portion the (air) intake valve dodges the portion with reposition of redundant personnel cooling channel intercommunication.

In some examples of the invention, the body cooling portion further comprises: and the exhaust valve avoiding part is communicated with the precombustion chamber avoiding part, the collection and exhaust upper-layer cooling part and the cylinder respectively.

In some examples of the present invention, a first connecting pipe is provided between the main body cooling part and the row upper layer cooling part, a diameter of the first connecting pipe is d1, and a range of d1 is: d1 is more than or equal to 8mm and less than or equal to 12 mm.

In some examples of the present invention, three second connecting pipes are provided between the upper-layer cooling part of the row and the lower-layer cooling part of the row, three the second connecting pipes are arranged at intervals, and three the diameters of the second connecting pipes in the backward-to-forward direction are d2, d3 and d4, respectively, and the relationship between d2, d3 and d4 is: d 2: d 3: d4 is 1:1.2: 2.

In some examples of the present invention, the main body cooling part is provided in plurality, and a plurality of the main body cooling parts are arranged at intervals therebetween.

According to the utility model discloses an engine, include: the cylinder head described above.

According to the utility model discloses a vehicle, include: the engine described above.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic view of a water jacket according to an embodiment of the present invention at a first angle;

fig. 2 is a schematic structural view of a second angle of the water jacket according to an embodiment of the present invention;

FIG. 3 is a schematic view of the structure of the cooling part of the main body;

FIG. 4 is a schematic view of the connection of the upper cooling portion and the lower cooling portion.

Reference numerals:

1. a water jacket;

10. a main body cooling section; 11. a liquid inlet; 110. a first liquid inlet; 111. a second liquid inlet; 12. an injector avoidance portion; 13. an intake valve avoiding section; 14. a split flow cooling channel; 15. a pre-combustion chamber avoiding part; 16. an exhaust valve avoiding part; 17. a first connecting pipe; 18. a second connecting pipe; 20. a header upper layer cooling section; 30. a row-collecting lower layer cooling part; 31. and a liquid outlet.

Detailed Description

Embodiments of the present invention are described in detail below, and the embodiments described with reference to the drawings are exemplary.

A cylinder head according to an embodiment of the present invention is described below with reference to fig. 1 to 4, the cylinder head including: the engine cylinder cover comprises a cylinder cover body and a water jacket 1, wherein the cylinder cover body is a body part of the cylinder cover, the water jacket 1 is a space between a cylinder body of the cylinder and an inner shell and an outer shell of the cylinder cover, cooling liquid can circularly flow in the water jacket 1, the temperature of a combustion chamber of an engine and the inner wall of the cylinder body is transferred to the cooling liquid through heat conduction, the liquid is flowable and is circularly transferred to a radiator through a water pump, the radiator radiates heat to the cooling liquid through the flowing of outside air, the radiated cooling liquid is circularly transferred to the water jacket 1 to receive the heat generated when the engine works, and the circulation is carried out.

As shown in fig. 1 and 2, a water jacket 1 according to an embodiment of the present invention includes: a main body cooling part 10, a header upper layer cooling part 20, and a header lower layer cooling part 30. The main part cooling part 10 is the main part of water jacket 1, main part cooling part 10 mainly sets up in the cylinder cap main part, the cylinder cap main part is provided with structures such as combustion chamber and precombustion chamber, like this main part cooling part 10 can cool off prechamber and bridge of the nose district, avoid precombustion, the detonation because of the high temperature initiation in precombustion chamber and bridge of the nose district, and the upper cooling part 20 of the collection row and the lower cooling part 30 of the collection row then can be to the collection row, also be exactly that the blast pipe of cylinder cap cools off the temperature, can make the blast pipe exhaust better like this, reduce exhaust temperature.

It should be noted that the coolant enters the water jacket 1 from the main body cooling portion 10, and the temperature of the coolant is relatively the lowest, while the temperature of the area of the cylinder head main body, such as the combustion chamber and the precombustion chamber, is relatively high, and the main body cooling portion 10 is mainly provided on the cylinder head main body, so that the coolant can better carry the temperature of the area corresponding to the cylinder head main body. The temperature of the coolant after passing through the main body cooling part 10 is relatively higher, while the temperature of the exhaust pipe is lower than the temperature of the combustion chamber, the pre-combustion chamber, and other parts, and the exhaust pipe is cooled by the upper collection and exhaust cooling part 20 and the lower collection and exhaust cooling part 30, but the range of the upper collection and exhaust cooling part 20 and the lower collection and exhaust cooling part 30 covering the exhaust pipe is larger, so that the cooling effect of the coolant of the upper collection and exhaust cooling part 20 and the lower collection and exhaust cooling part 30 on the exhaust pipe can be improved.

As shown in fig. 1 and fig. 2, a liquid inlet 11 is disposed at one longitudinal end of the main body cooling portion 10, and the cooling liquid can enter the main body cooling portion 10 from the liquid inlet 11, so as to cool the prechamber and the nose bridge area of the cylinder head from the main body cooling portion 10, and one longitudinal end of the upper collecting and exhausting layer cooling portion 20 is connected to the other longitudinal end of the main body cooling portion 10, so that the cooling liquid can directly and longitudinally flow to the upper collecting and exhausting layer cooling portion 20 after passing through the main body cooling portion 10, and the exhaust pipe at the upper collecting and exhausting layer cooling portion 20 is continuously cooled.

As shown in fig. 1 and fig. 2, one end of the lower cooling portion 30 is provided with a liquid outlet 31, and the lower cooling portion 30 is connected to the other longitudinal end of the upper cooling portion 20, that is, after the cooling liquid flows through the upper cooling portion 20, the cooling liquid may also flow longitudinally from the other longitudinal end of the upper cooling portion 20 to the other longitudinal end of the lower cooling portion 30, so as to cool the exhaust pipe at the lower cooling portion 30, and then flow out of the cylinder head through the liquid outlet 31. The lower collection and exhaust layer cooling portion 30 is located below the upper collection and exhaust layer cooling portion 20, so that the structure of the water jacket 1 can correspond to the overall structure of the exhaust pipe, and the arrangement of the water jacket 1 is facilitated. Of course, the header lower-stage cooling unit 30 may be located further obliquely below the header upper-stage cooling unit 20.

Therefore, the main cooling part 10, the upper collecting and discharging cooling part 20 and the lower collecting and discharging cooling part 30 can respectively carry out cooling or water return corresponding to different structures of the cylinder cover, the overall arrangement of the water jacket 1 and the flowing form of the cooling liquid are reasonable, the cooling performance of the engine can be effectively improved, the temperature of the precombustion chamber can be controlled below 750 ℃, the problems of pre-ignition and detonation caused by too high temperature of the precombustion chamber are avoided, meanwhile, the material temperature is lower than the metallographic structure change temperature, a low-power water pump can meet the cooling requirement, the highest temperature of the wall surface of the cylinder cover combustion chamber can be controlled below 230 ℃ when the water pump flow is 90L/min, the thermal stress and the thermal deformation of the engine are effectively reduced, the reliability of the engine is improved, the cost of the engine is reduced, the market competitiveness is improved, in addition, the main cooling part 10, the upper collecting and discharging cooling part 20 and the lower collecting and discharging cooling part 30 are communicated in series, a shunt branch need not be provided.

Wherein, as shown in FIG. 3, the loading port 11 comprises: the first liquid inlet 110 and the second liquid inlet 111 are arranged at intervals, and the first liquid inlet 110 is positioned at two sides of the second liquid inlet 111; the main body cooling portion 10 includes: and an injector escape portion 12, the injector escape portion 12 communicating with the second inlet port 111. The first liquid inlet 110 is located on both sides of the second liquid inlet 111, the cooling liquid can enter the water jacket 1 from the first liquid inlet 110 and the second liquid inlet 111 at the same time, and the first liquid inlet 110 and the second liquid inlet 111 are arranged at intervals, so that interference between the first liquid inlet 110 and the second liquid inlet 111 can be avoided, and the liquid inlet of the cooling liquid is facilitated. The fuel injector avoiding portion 12 is mainly used for avoiding the fuel injector, and it can be understood that, in order to avoid the fuel injector, the fuel injector avoiding portion 12 surrounds the periphery of the fuel injector, and the fuel injector avoiding portion 12 is communicated with the second liquid inlet 111, so that the cooling liquid entering from the second liquid inlet 111 can be introduced into the fuel injector avoiding portion 12, and the fuel injector can be cooled down, so that the fuel injector can normally and stably operate.

Further, as shown in fig. 3, the main body cooling part 10 further includes: the intake valve avoiding part 13, two ends of the intake valve avoiding part 13 are respectively communicated with the first liquid inlet 110 and the injector avoiding part 12. The intake valve dodges portion 13 mainly used dodges the intake valve, understandably, intake valve dodges portion 13 and dodges the intake valve for dodging the intake valve, so intake valve dodge portion 13 can be around on the week side of intake valve, dodge portion 13's both ends with the intake valve respectively with first inlet 110 and sprayer dodge portion 12 intercommunication, the coolant liquid that gets into from first inlet 110 can let in intake valve dodge portion 13 like this, the coolant liquid through sprayer dodge portion 12 also can let in intake valve dodge portion 13 simultaneously, thereby can reduce the temperature that gets into the interior gas of cylinder head better, improve the internal air input of jar, there is the apparent improvement to the performance of engine.

Further, as shown in fig. 3, the main body cooling part 10 further includes: the split-flow cooling channel 14 is communicated with the first liquid inlet 110 and is arranged in parallel with the intake valve avoiding portion 13, and the pre-combustion chamber avoiding portion 15 is communicated with the fuel injector avoiding portion 12, the intake valve avoiding portion 13 and the split-flow cooling channel 14 respectively. The divided cooling channel 14 is communicated with the first liquid inlet 110, and the divided cooling channel 14 is arranged in parallel with the intake valve avoiding portion 13, that is, after the cooling liquid enters the first liquid inlet 110, a part of the cooling liquid can enter the intake valve avoiding portion 13, and the other part of the cooling liquid can be introduced into the divided cooling channel 14. The prechamber avoiding part 15 is mainly used for avoiding the prechamber, understandably, the prechamber avoiding part 15 is used for avoiding the prechamber, so the prechamber avoiding part 15 can surround the peripheral side of the prechamber, and the prechamber avoiding part 15 is respectively communicated with the fuel injector avoiding part 12, the intake valve avoiding part 13 and the flow dividing cooling channel 14, namely, the cooling liquid flowing through the fuel injector avoiding part 12, the intake valve avoiding part 13 and the flow dividing cooling channel 14 can finally flow to the prechamber avoiding part 15, so that the flow speed of the cooling liquid at the prechamber avoiding part 15 is larger, the prechamber avoiding part 15 is also the position with the largest flow speed of the cooling liquid in the water jacket 1, the flow speed can reach more than 4m/s, the temperature of the prechamber is fully cooled, and the reliability of an engine cylinder head is improved.

In addition, as shown in fig. 3, the main body cooling part 10 further includes: an exhaust valve bypass portion 16, and the exhaust valve bypass portion 16 communicates with the prechamber bypass portion 15, the collection and exhaust upper cooling portion 20, and the cylinder, respectively. Similarly, the exhaust valve avoiding portion 16 is mainly used for avoiding the exhaust valve, and it can be understood that, in order to avoid the exhaust valve, the exhaust valve avoiding portion 16 surrounds the periphery of the exhaust valve, and the exhaust valve avoiding portion 16 is respectively communicated with the prechamber avoiding portion 15, the exhaust valve avoiding portion 16 and the cylinder, first, the coolant passes through the prechamber avoiding portion 15 and then flows to the exhaust valve avoiding portion 16, so that the ambient temperature of the exhaust valve can be cooled, and the coolant also flows to the exhaust collection upper layer cooling portion 20, and the coolant enters the exhaust collection upper layer cooling portion 20, and in addition, the coolant can also directly flow to the cylinder, and the coolant flows by the exhaust valve avoiding portion 16, wherein the amount of the coolant for cooling the cylinder block is V1, the amount of the coolant flowing to the exhaust collection upper layer cooling portion 20 is V2, and V1: V2 is 1: 2.

According to an optional embodiment of the present invention, as shown in fig. 2, a first connecting pipe 17 is disposed between the main body cooling part 10 and the upper layer cooling part 20, the diameter of the first connecting pipe 17 is d1, and the range of d1 is: d1 is more than or equal to 8mm and less than or equal to 12 mm. A first connecting pipe 17 is arranged between the main body cooling part 10 and the upper collecting and exhausting layer cooling part 20, so that the cooling liquid of the main body cooling part 10 can be introduced into the upper collecting and exhausting layer cooling part 20 through the first connecting pipe 17, and the exhaust pipe at the upper collecting and exhausting layer cooling part 20 is cooled. The diameter range of the first connecting pipe 17 is set to: d1 is more than or equal to 8mm and less than or equal to 12mm, so that the first connecting pipe 17 has certain structural strength and is not easy to damage, thereby ensuring that the pressure loss of the water jacket 1 is as small as possible and balancing the flow of the cooling liquid among cylinders.

In addition, as shown in fig. 4, three second connecting pipes 18 are provided between the upper row cooling unit 20 and the lower row cooling unit 30, the three second connecting pipes 18 are provided at intervals, and the diameters of the three second connecting pipes 18 in the direction from the rear to the front are d2, d3, and d4, respectively, and the relationship among d2, d3, and d4 is: d 2: d 3: d4 is 1:1.2: 2. Three second connecting pipes 18 are arranged between the upper-layer cooling part 20 and the lower-layer cooling part 30, so that the cooling liquid of the upper-layer cooling part 20 can be introduced into the lower-layer cooling part 30 through the second connecting pipes 18 more quickly and better, and the exhaust pipe at the lower-layer cooling part 30 is cooled. Since the amount of the coolant is different for each cylinder and the amount of the coolant is gradually increased for each cylinder in the backward-forward direction, the diameter ratio of the three second connection pipes 18 in the backward-forward direction is: 1:1.2:2, the flow rate of the cooling liquid between the cylinders can be balanced, and the flow rate of the cooling liquid at each position of the collecting and discharging upper layer cooling part 20 is ensured to be more than 0.5 m/s.

Alternatively, as shown in fig. 1, the number of the main body cooling parts 10 is plural, and the plural main body cooling parts 10 are arranged at intervals. A plurality of main body cooling parts 10 are arranged, the plurality of main body cooling parts 10 can correspond to a plurality of cylinder bodies, and therefore the plurality of cylinder bodies can be cooled simultaneously through the plurality of main body cooling parts 10, and reliability of the engine is improved. The plurality of main body cooling parts 10 are arranged at intervals, so that the arrangement of the plurality of main body cooling parts 10 is facilitated, and the interference among the plurality of main body cooling parts 10 can be avoided.

Specifically, as shown in fig. 1 to 4, the coolant enters the water jacket 1 from the first liquid inlet 110 and the second liquid inlet 111 of the plurality of main body cooling portions 10, the coolant entering from the second liquid inlet 111 may be introduced into the injector bypass portion 12, a part of the coolant entering from the first liquid inlet 110 is introduced into the intake valve bypass portion 13, the coolant passing through the injector bypass portion 12 is also introduced into the intake valve bypass portion 13, another part of the coolant entering from the first liquid inlet 110 is introduced into the prechamber bypass portion 15 through the diversion cooling channel 14, the coolant flowing through the injector bypass portion 12 and the intake valve bypass portion 13 finally flows to the prechamber bypass portion 15, the coolant passes through the prechamber bypass portion 15 and then flows to the exhaust valve bypass portion 16, and the coolant may be diverted to the exhaust upper cooling portion 20 through the first connecting pipe 17 at the exhaust valve bypass portion 16, or directly into the cylinder, after the cooling liquid enters the upper cooling part 20, the cooling liquid may continue to enter the lower cooling part 30 through the second connecting pipe 18, and finally is discharged out of the water jacket 1 from the liquid outlet 31 of the lower cooling part 30.

According to the utility model discloses engine, include: the water jacket 1 described in the above embodiment.

According to the utility model discloses vehicle, include: the engine described above.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

In the description of the present invention, "the first feature" and "the second feature" may include one or more of the features. In the description of the present invention, "a plurality" means two or more. In the description of the present invention, the first feature "on" or "under" the second feature may include the first and second features being in direct contact, and may also include the first and second features being in contact with each other not directly but through another feature therebetween. In the description of the invention, the first feature being "on", "above" and "above" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like 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 present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A cylinder head, comprising:

a cylinder head main body;

a water jacket, the water jacket comprising: the cylinder head comprises a main body cooling part, an upper-layer cooling part and a lower-layer cooling part, wherein the upper-layer cooling part and the lower-layer cooling part are arranged in a collecting mode, the main body cooling part is arranged on the cylinder head main body, a liquid inlet is formed in the longitudinal end of the main body cooling part, the longitudinal end of the upper-layer cooling part is connected to the longitudinal other end of the main body cooling part, the lower-layer cooling part is connected to the vertical other end of the upper-layer cooling part in a collecting mode, and a liquid outlet is formed in the lower-layer cooling part in a collecting mode.

2. The cylinder head of claim 1, wherein the inlet port comprises: the first liquid inlet and the second liquid inlet are arranged at intervals, and the first liquid inlet is positioned at two sides of the second liquid inlet; the main body cooling part includes: and the oil sprayer avoiding part is communicated with the second liquid inlet.

3. The cylinder head of claim 2, wherein the body cooling portion further comprises: and the two ends of the intake valve avoiding part are respectively communicated with the first liquid inlet and the fuel injector avoiding part.

4. The cylinder head of claim 3, wherein the body cooling portion further comprises: part is dodged to reposition of redundant personnel cooling channel and antechamber, reposition of redundant personnel cooling channel with first inlet intercommunication, and with the portion parallel arrangement is dodged to the (air) intake valve, the antechamber dodge the portion respectively with the sprayer dodge the portion the (air) intake valve dodges the portion with reposition of redundant personnel cooling channel intercommunication.

5. The cylinder head of claim 4, wherein the body cooling portion further comprises: and the exhaust valve avoiding part is communicated with the precombustion chamber avoiding part, the collection and exhaust upper-layer cooling part and the cylinder respectively.

6. The cylinder head of claim 1, wherein a first connecting pipe is provided between the body cooling portion and the bank upper cooling portion, the first connecting pipe having a diameter d1, and a diameter d1 ranging from: d1 is more than or equal to 8mm and less than or equal to 12 mm.

7. The cylinder head according to claim 1, wherein three second connecting pipes are provided between the bank upper-stage cooling portion and the bank lower-stage cooling portion, the three second connecting pipes are provided at intervals, and the diameters of the three second connecting pipes in the backward-forward direction are d2, d3, and d4, respectively, and the relationship between d2, d3, and d4 is: d 2: d 3: d4 is 1:1.2: 2.

8. The cylinder head of claim 1, wherein the body cooling portion is provided in plurality, and the plurality of body cooling portions are arranged at intervals.

9. An engine, comprising: the cylinder head of any one of claims 1-8.

10. A vehicle, characterized by comprising: an engine as claimed in claim 9.