Cylinder cover and vehicle

Abstract

The utility model discloses an air cylinder cover and a vehicle. The air cylinder cover comprises an air cylinder cover body, the main water jacket is located on the air inlet side of the air cylinder cover and communicates with the upper water opening. The end, close to the air inlet side, of the upper-layer water jacket communicates with the main water jacket and extends from the air inlet side to the exhaust side of the air cylinder cover. The lower-layer water jacket is communicated with one end, close to the exhaust side, of the upper-layer water jacket, and the other end of the lower-layer water jacket is communicated with the water return port; the height of the upper-layer water jacket is gradually increased in the extending direction from the air inlet side to the air outlet side. The cooling medium can be ensured to fully fill the whole upper-layer water jacket and then flow into the lower-layer water jacket to form a complete cooling circulation loop, and the main water jacket, the upper-layer water jacket and the lower-layer water jacket are communicated in series, so that the retention time of the cooling medium in the cylinder cover can be shortened, the heat dissipation rate of the cylinder cover and related parts is increased, and the service life of the cylinder cover is prolonged. And local overheating caused by local circulation difference is avoided, so that the preignition frequency of hydrogen in different working conditions is reduced, and the reliability of the cylinder cover is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicles, in particular to a cylinder head and a vehicle. Background Art

[0002] In the relevant technology, hydrogen is regarded as a clean fuel that can replace fossil fuels, but hydrogen combustion requires lower ignition energy than gasoline. The existing cylinder head has poor heat dissipation efficiency, which makes hydrogen easily ignited by high-temperature hot spots and causes pre-ignition problems. In addition, hydrogen has low ignition energy and fast combustion speed, which is easy to cause transient temperature rise and abnormal combustion, greatly reducing the safety and reliability of the cylinder head. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, one purpose of the utility model is to provide a cylinder head that can effectively improve the heat dissipation efficiency of the vehicle cylinder head, thereby reducing the frequency of hydrogen pre-ignition under different working conditions and improving the safety and reliability of the cylinder head.

[0004] The utility model further provides a vehicle with the cylinder head.

[0005] According to the cylinder head of the embodiment of the utility model, the cylinder head includes: a cylinder head body, a main water jacket, an upper water jacket and a lower water jacket, the main water jacket is located on the intake side of the cylinder head and is connected to an upper water inlet, one end of the upper water jacket adjacent to the intake side is connected to the main water jacket and extends from the intake side to the exhaust side of the cylinder head, the lower water jacket is connected to one end of the upper water jacket adjacent to the exhaust side, and the other end of the lower water jacket is connected to a water return inlet; wherein the upper water jacket gradually increases in height in the extension direction from the intake side to the exhaust side.

[0006] According to the cylinder head of the embodiment of the utility model, by gradually raising the height of the upper water jacket from the intake side to the exhaust side, it can be ensured that the cooling medium fills the entire upper water jacket before flowing into the lower water jacket, and the other end of the lower water jacket is connected with the return water port, thereby forming a complete cooling circulation loop, and the end of the upper water jacket adjacent to the intake side is connected with the main water jacket, and the lower water jacket is connected with the end of the upper water jacket adjacent to the exhaust side. The main water jacket, the upper water jacket, and the lower water jacket are connected in series, which can shorten the residence time of the cooling medium in the cylinder head, speed up the heat dissipation rate of the cylinder head and related components, avoid local overheating due to local circulation difference, thereby reducing the frequency of hydrogen pre-ignition in different working conditions, and further improving the reliability of the cylinder head.

[0007] According to some embodiments of the utility model, the cylinder head further includes: a throttling water port, into which at least part of the cooling medium flowing through the main water jacket flows, the throttling water port being connected to the cylinder water jacket of the cylinder head and being suitable for introducing at least part of the cooling medium into the cylinder water jacket to cool the cylinder.

[0008] According to some embodiments of the present invention, the cylinder head further comprises: a first connecting channel, one end of the first connecting channel is connected to the main water jacket, and the other end of the first connecting channel is connected to the upper water jacket.

[0009] According to some embodiments of the present invention, the main water jacket includes: an intake side water jacket, a converging water jacket and an exhaust side water jacket which are connected in sequence, and the converging water jacket surrounds the spark plug and the air nozzle area of ​​the cylinder head.

[0010] According to some embodiments of the utility model, the intake side water jacket includes an intake side outer sub-water jacket symmetrically arranged along the longitudinal center line of the combustion chamber and an intake side central water jacket located on the longitudinal center line, and the intake side outer sub-water jacket and the intake side central water jacket are both connected to the converging water jacket.

[0011] According to some embodiments of the utility model, a first flow guide arc section is provided at one end of the intake side outer sub-water jacket adjacent to the converging water jacket;

[0012] The confluence water jacket has a second guide arc segment and a third guide arc segment symmetrically arranged on the longitudinal center line of the combustion chamber, the second guide arc segment is located at one end of the confluence water jacket communicating with the intake side water jacket, and the third guide arc segment is substantially located on the transverse center line of the combustion chamber;

[0013] The radius of the second flow guiding arc segment is the difference between the radius of the first flow guiding arc segment and the radius of the third flow guiding arc segment.

[0014] According to some embodiments of the present invention, the spark plug and the air nozzle are both arranged on the longitudinal center line of the combustion chamber, the distance between the center of the spark plug and the transverse center line of the combustion chamber is S1, the distance between the air nozzle and the transverse center line is S2, the distance between the center of the third guide arc segment and the transverse center line is S3, and satisfies: S1=S2+S3.

[0015] According to some embodiments of the present invention, the exhaust side water jacket comprises an exhaust side outer sub-water jacket symmetrically arranged along the longitudinal center line of the combustion chamber and an exhaust side central water jacket located on the longitudinal center line, and the exhaust side outer sub-water jacket and the exhaust side central water jacket are both connected to the converging water jacket.

[0016] According to some embodiments of the utility model, the cylinder head further includes: a main water jacket exhaust channel and a total exhaust channel, the main water jacket exhaust channel is gaseously connected to the main water jacket, the total exhaust channel is gaseously connected to the main water jacket exhaust channel, and the total exhaust channel is located at the highest point of the cylinder head body.

[0017] A vehicle according to an embodiment of the utility model comprises the cylinder head of the above embodiment.

[0018] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0020] Figure 1 It is a left side view of the cylinder head of the embodiment of the utility model;

[0021] Figure 2 It is a top plan view of the cylinder head of the embodiment of the utility model;

[0022] Figure 3 It is a bottom bottom view of the cylinder head of the embodiment of the utility model;

[0023] Figure 4 It is a top view of the main water jacket of the embodiment of the utility model;

[0024] Figure 5 It is a rear view of the exhaust side of the cylinder head of the embodiment of the utility model.

[0025] Reference numerals:

[0026] Cylinder head 100;

[0027] Cylinder head body 10; intake side 11; exhaust side 12; first connecting channel 13; spark plug 14; jet nozzle 15; main water jacket exhaust channel 16; main exhaust channel 17; second connecting channel 18;

[0028] Main water jacket 20; upper water inlet 21; air intake side water jacket 22; air intake side outer sub-water jacket 221; air intake side central water jacket 222; first guide arc section 223; converging water jacket 23; second guide arc section 231; third guide arc section 232; exhaust side water jacket 24; exhaust side outer sub-water jacket 241; exhaust side central water jacket 242;

[0029] Upper water jacket 30; lower water jacket 40; water return port 41; throttling water port 50; exhaust valve seat cooling water channel 51; intake valve seat cooling water channel 52; longitudinal center line 53; transverse center line 54. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0031] Unless otherwise defined, all technical and scientific terms used in this application have the same meanings as those commonly understood by technicians in the technical field of this application; the terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned drawings and any variations thereof are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order or a primary and secondary relationship.

[0032] Reference to "embodiment" in this application means that a particular feature, structure, or characteristic described in conjunction with the embodiment may be included in at least one embodiment of the present application. The appearance of the phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments.

[0033] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "attached" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0034] The term "and / or" in this application is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this application generally indicates that the associated objects before and after are in an "or" relationship.

[0035] In the embodiments of the present application, the same reference numerals represent the same components, and for the sake of brevity, detailed descriptions of the same components are omitted in different embodiments. It should be understood that the thickness, length, width and other dimensions of various components in the embodiments of the present application shown in the drawings, as well as the overall thickness, length, width and other dimensions of the integrated device are only exemplary descriptions and should not constitute any limitation to the present application.

[0036] The term "plurality" used in the present application refers to two or more (including two).

[0037] Reference below Figure 1-Figure 5 A cylinder head 100 and a vehicle according to an embodiment of the present invention are described.

[0038] According to the cylinder head 100 of the embodiment of the present application, the cylinder head 100 includes: a cylinder head body 10, a main water jacket 20, an upper water jacket 30 and a lower water jacket 40; the main water jacket 20 is located on the intake side 11 of the cylinder head 100 and is connected to the upper water inlet 21, one end of the upper water jacket 30 adjacent to the intake side 11 is connected to the main water jacket 20, and extends from the intake side 11 to the exhaust side 12 of the cylinder head 100, the lower water jacket 40 is connected to one end of the upper water jacket 30 adjacent to the exhaust side 12, and the other end of the lower water jacket 40 is connected to the water return port 41; the height of the upper water jacket 30 gradually increases in the extension direction from the intake side 11 to the exhaust side 12.

[0039] Among them, the main water jacket 20 can be located on the intake side 11 of the cylinder head 100, and the main water jacket 20 is connected with the upper water inlet 21. For example, the end of the main water jacket 20 close to the intake side 11 can be provided with a through hole to form the upper water inlet 21, or a pipeline can be connected with the inside of the main water jacket 20 to form the upper water inlet 21, but the utility model is not limited thereto, as long as the main water jacket 20 is connected with the upper water inlet 21. The connection between the main water jacket 20 and the upper water inlet 21 enables the cooling medium to enter the main water jacket 20 from the upper water inlet 21, thereby ensuring that the cooling medium preferentially cools the high-temperature heat sources such as the combustion chamber, valves, valve seats, spark plugs 14 wrapped by the main water jacket 20 at a lower temperature, thereby effectively improving the heat dissipation efficiency of the cylinder head 100 and improving the reliability of the operation of the cylinder head 100.

[0040] One end of the upper water jacket 30 adjacent to the air intake side 11 is connected to the main water jacket 20. The upper water jacket 30 and the main water jacket 20 may be connected through a pipeline, or the upper water jacket 30 and the main water jacket 20 may be integrally formed, but the utility model is not limited thereto. The upper water jacket 30 and the main water jacket 20 may also be connected in other ways, as long as one end of the upper water jacket 30 adjacent to the air intake side 11 is connected to the main water jacket 20. Thus, one end of the upper water jacket 30 adjacent to the air intake side 11 is connected to the main water jacket 20, so that the cooling medium in the main water jacket 20 can flow into the upper water jacket 30 to cool other components wrapped by the upper water jacket 30. In addition, the upper water jacket 30 extends from the intake side 11 to the exhaust side 12 of the cylinder head 100, thereby ensuring that the lower water jacket 40 is connected to one end of the upper water jacket 30 adjacent to the exhaust side 12, so that the cooling medium in the upper water jacket 30 can flow into the lower water jacket 40 to cool other components wrapped by the lower water jacket 40, wherein the height of the upper water jacket 30 gradually increases in the extension direction from the intake side 11 to the exhaust side 12. Such an arrangement can ensure that the cooling medium fills the entire upper water jacket 30 before flowing into the lower water jacket 40, and the other end of the lower water jacket 40 is connected to the water return port 41, thereby forming a complete cooling circulation loop, achieving the effect of cooling the cylinder head 100 by circulating the cooling medium.

[0041] Furthermore, one end of the upper water jacket 30 adjacent to the intake side 11 is connected to the main water jacket 20, and the lower water jacket 40 is connected to one end of the upper water jacket 30 adjacent to the exhaust side 12, so that the main water jacket 20, the upper water jacket 30, and the lower water jacket 40 can be connected in series, thereby shortening the residence time of the cooling medium in the cylinder head 100, accelerating the heat dissipation rate of the cylinder head 100 and related components, avoiding local overheating due to local circulation differences, thereby reducing the frequency of pre-ignition of hydrogen in different working conditions, and thus improving the reliability of the cylinder head 100.

[0042] According to the cylinder head 100 of the embodiment of the utility model, by gradually raising the height of the upper water jacket 30 from the intake side 11 to the exhaust side 12, it is possible to ensure that the cooling medium fills the entire upper water jacket 30 before flowing into the lower water jacket 40, and the other end of the lower water jacket 40 is connected to the return water port 41, thereby forming a complete cooling circulation loop, and the end of the upper water jacket 30 adjacent to the intake side 11 is connected to the main water jacket 20, and the lower water jacket 40 is connected to the end of the upper water jacket 30 adjacent to the exhaust side 12. The main water jacket 20, the upper water jacket 30, and the lower water jacket 40 are connected in series, which can shorten the residence time of the cooling medium in the cylinder head 100, accelerate the heat dissipation rate of the cylinder head 100 and related components, avoid local overheating due to local circulation difference, thereby reducing the frequency of hydrogen pre-ignition under different working conditions, and further improving the reliability of the cylinder head 100.

[0043] According to some embodiments of the present invention, Figure 1 As shown, the cylinder head 100 may further include: a throttling water port 50, at least part of the cooling medium flowing through the main water jacket 20 flows into the throttling water port 50, the throttling water port 50 is connected to the cylinder water jacket of the cylinder head 100, and is suitable for introducing at least part of the cooling medium into the cylinder water jacket to cool the cylinder.

[0044] Among them, at least part of the cooling medium flowing through the main water jacket 20 flows into the throttling water port 50, for example: 20%, 21%, 22%, 30% and other parts of the cooling medium can flow into the throttling water port 50, but the utility model is not limited thereto, and other proportions of the cooling medium can also flow into the throttling water port 50, as long as at least part of the cooling medium flowing through the main water jacket 20 flows into the throttling water port 50. The present application is described by taking 18% to 30% of the cooling medium flowing into the throttling water port 50 as an example. The throttling water port 50 is connected to the cylinder water jacket of the cylinder head 100, and the throttling water port 50 is suitable for introducing at least part of the cooling medium into the cylinder water jacket to cool the cylinder. In this way, it can ensure that the cooling medium in the main water jacket 20 cools the components wrapped by the main water jacket 20, and at least part of the cooling medium still flows into the cylinder water jacket to cool the cylinder, thereby improving the heat dissipation efficiency of the cylinder head 100.

[0045] According to some embodiments of the present invention, Figure 3 As shown, each cylinder corresponds to at least two throttling water ports 50 , and the plurality of throttling water ports 50 are evenly distributed on the intake side 11 .

[0046] Among them, each cylinder corresponds to at least two throttling water inlets 50, for example: each cylinder can correspond to two, three, four or other numbers of throttling water inlets 50, but the utility model is not limited to this, and each cylinder can also correspond to other numbers of throttling water inlets 50, as long as each cylinder corresponds to at least two throttling water inlets 50. Multiple throttling water inlets 50 can be evenly distributed on the intake side 11, for example: there can be two, three, five, eight or other numbers of throttling water inlets 50 evenly distributed on the intake side 11, but the utility model is not limited to this, and there can also be other numbers of throttling water inlets 50 evenly distributed on the intake side 11, as long as multiple throttling water inlets 50 are evenly distributed on the intake side 11. This application takes eight throttling water inlets 50 evenly distributed on the intake side 11 as an example for explanation. Therefore, multiple throttling water inlets 50 are evenly distributed on the intake side 11, which can ensure the cooling consistency of each cylinder, thereby improving the cooling efficiency of the cylinder head 100.

[0047] According to some embodiments of the present invention, Figure 1 As shown, the cylinder head 100 may further include: a first connecting channel 13 , one end of the first connecting channel 13 is connected to the main water jacket 20 , and the other end of the first connecting channel 13 is connected to the upper water jacket 30 .

[0048] Among them, one end of the first connecting channel 13 is connected to the main water jacket 20, and the other end of the first connecting channel 13 is connected to the upper water jacket 30, thereby achieving a connecting effect between the main water jacket 20 and the upper water jacket 30, so that the cooling medium can flow from the main water jacket 20 into the upper water jacket 30, and then the cooling medium can cool down the components wrapped by the main water jacket 20 and the upper water jacket 30, thereby improving the cooling efficiency of the cylinder head 100.

[0049] According to some embodiments of the present invention, Figure 1 As shown, the cylinder head 100 may further include: a second connecting channel 18 , one end of the second connecting channel 18 is connected to the upper water jacket 30 , and the other end of the second connecting channel 18 is connected to the lower water jacket 40 .

[0050] Among them, one end of the second connecting channel 18 is connected to the upper water jacket 30, and the other end of the second connecting channel 18 is connected to the lower water jacket 40, so as to achieve the connection effect between the lower water jacket 40 and the upper water jacket 30, so that the cooling medium can flow from the upper water jacket 30 into the lower water jacket 40, and then the cooling medium can cool down the parts wrapped by the lower water jacket 40 and the upper water jacket 30, thereby improving the cooling efficiency of the cylinder head 100.

[0051] According to some embodiments of the present invention, Figure 5 As shown, there may be a plurality of first connecting passages 13 , and the plurality of first connecting passages 13 are arranged at intervals in the length direction of the cylinder head body 10 .

[0052] Among them, the number of the first connecting channels 13 can be multiple, for example: there can be two, three, four, five, etc. first connecting channels 13, but the utility model is not limited thereto, and there can also be other numbers of first connecting channels 13, as long as the number of the first connecting channels 13 is multiple. This application is explained by taking the number of five first connecting channels 13 as an example. And the multiple first connecting channels 13 are arranged at intervals in the length direction of the cylinder head body 10, so that the cooling medium flows from the multiple first connecting channels 13 into the upper water jacket 30, and then the parts wrapped by the upper water jacket 30 are evenly cooled, thereby avoiding local overheating due to local circulation differences, thereby reducing the frequency of hydrogen pre-ignition in different working conditions, and thus improving the reliability of the cylinder head 100.

[0053] According to some embodiments of the present invention, Figure 5 As shown, the number of the second connecting passages 18 may be multiple, and the multiple second connecting passages 18 are arranged at intervals in the length direction of the cylinder head body 10 .

[0054] The number of the second connecting channels 18 can be multiple, for example, there can be two, three, four, five, etc. second connecting channels 18, but the present invention is not limited thereto, and there can be other numbers of second connecting channels 18, as long as the number of the second connecting channels 18 is multiple. The multiple second connecting channels 18 are arranged at intervals in the length direction of the cylinder head body 10, so that the cooling medium flows from the multiple second connecting channels 18 into the lower water jacket 40, and then the parts wrapped by the lower water jacket 40 are evenly cooled, thereby avoiding local overheating due to local circulation difference, thereby reducing the frequency of hydrogen pre-ignition in different working conditions, and thus improving the reliability of the cylinder head 100.

[0055] According to some embodiments of the present invention, Figure 4 As shown, the main water jacket 20 may include: an intake side water jacket 22, a converging water jacket 23 and an exhaust side water jacket 24 which are connected in sequence, and the converging water jacket 23 surrounds the area where the spark plug 14 and the air nozzle 15 of the cylinder head 100 are located.

[0056] The main water jacket 20 may include: an intake side water jacket 22, a converging water jacket 23 and an exhaust side water jacket 24 which are connected in sequence, so that the cooling medium can flow from the intake side 11 to the exhaust side 12, thereby enabling the cooling medium to have a cooling effect on the entire intake process. The converging water jacket 23 may surround the spark plug 14 and the air nozzle 15 of the cylinder head 100, thereby enabling the cooling medium to achieve targeted cooling of the spark plug 14 and the air nozzle 15 in the converging water jacket 23, thereby reducing the high temperature risk of the spark plug 14 and the air nozzle 15, thereby significantly improving the performance of the cylinder head 100 and the inhibition of hydrogen pre-ignition.

[0057] According to some embodiments of the present invention, Figure 4 As shown, the intake side water jacket 22 may include an intake side outer sub-water jacket 221 symmetrically arranged along the longitudinal center line 53 of the combustion chamber and an intake side central water jacket 222 located on the longitudinal center line 53 , and both the intake side outer sub-water jacket 221 and the intake side central water jacket 222 are connected to the converging water jacket 23 .

[0058] The intake side water jacket 22 may include an intake side outer sub-water jacket 221 symmetrically arranged along the longitudinal center line 53 of the combustion chamber and an intake side central water jacket 222 located on the longitudinal center line 53, so that the cooling medium entering the main water jacket 20 is distributed to the intake side outer sub-water jacket 221 and the intake side central water jacket 222 symmetrically arranged along the longitudinal center line 53 of the combustion chamber and first enters the intake valve seat cooling water channel 52, so as to achieve the cooling effect of the cooling medium on the intake valve and the intake valve seat. The intake side outer sub-water jacket 221 and the intake side central water jacket 222 are both connected to the converging water jacket 23, so that the cooling medium can flow from the intake side outer sub-water jacket 221 and the intake side central water jacket 222 into the converging water jacket 23 to cool the spark plug 14 and the gas nozzle 15 in a targeted manner, thereby further reducing the high temperature risk of the spark plug 14 and the gas nozzle 15 in the area, thereby further improving the performance of the cylinder head 100 and the inhibition of hydrogen pre-ignition.

[0059] According to some embodiments of the present invention, Figure 4 As shown, the end of the intake side outer sub-water jacket 221 adjacent to the converging water jacket 23 may be provided with a first guide arc segment 223; the converging water jacket 23 may have a second guide arc segment 231 and a third guide arc segment 232 symmetrically arranged on the longitudinal center line 53 of the combustion chamber, the second guide arc segment 231 is located at the end where the converging water jacket 23 is connected to the intake side water jacket 22, and the third guide arc segment 232 is substantially located on the transverse center line 54 of the combustion chamber;

[0060] The radius of the second flow guiding arc segment 231 is the difference between the radius of the first flow guiding arc segment 223 and the radius of the third flow guiding arc segment 232 .

[0061] Among them, a first guide arc segment 223 can be provided at one end of the intake side outer sub-water jacket 221 adjacent to the converging water jacket 23, so that the first guide arc segment 223 can guide the cooling medium in the main water jacket 20, so that 30%-45% of the cooling medium of the intake side outer sub-water jacket 221 and the cooling medium of the intake side central water jacket 222 can flow around the center of the air injection nozzle 15, thereby ensuring that hydrogen pre-ignition will not occur between the air injection nozzle 15 and the cylinder head 100 due to excessively high temperature, thereby improving the safety and reliability of the cylinder head 100.

[0062] The converging water jacket 23 may have a second guide arc segment 231 and a third guide arc segment 232 symmetrically arranged on the longitudinal center line 53 of the combustion chamber. The second guide arc segment 231 is located at one end of the converging water jacket 23 connected to the intake side water jacket 22, and the third guide arc segment 232 is substantially located on the transverse center line 54 of the combustion chamber. Such an arrangement enables the second guide arc segment 231 and the third guide arc segment 232 to guide the cooling medium in the converging water jacket 23, thereby allowing more than 65% of the cooling medium in the converging water jacket 23 to pass through the spark plug 14 first, so that the cooling medium flow rate around the spark plug 14 reaches more than 2.45 m / s, thereby ensuring sufficient cooling of the spark plug 14, thereby improving the safety and reliability of the cylinder head 100.

[0063] The radius of the second guide arc segment 231 may be R3, and the radius R3 of the second guide arc segment 231 may be the difference between the radius R2 of the first guide arc segment 223 and the radius R1 of the third guide arc segment 232, that is, R3 = R2-R1. Such a configuration can ensure the guide effect of the first guide arc segment 223 and the third guide arc segment 232, and further ensure that more than 65% of the cooling medium in the converging water jacket 23 can pass through the spark plug 14 first, so that the cooling medium flow rate around the spark plug 14 reaches more than 2.45 m / s, and further ensures sufficient cooling of the spark plug 14, thereby further improving the safety and reliability of the cylinder head 100.

[0064] According to some embodiments of the present invention, Figure 4 As shown, the spark plug 14 and the air nozzle 15 can be arranged on the longitudinal center line 53 of the combustion chamber, the distance between the center of the spark plug 14 and the transverse center line 54 of the combustion chamber is S1, the distance between the air nozzle 15 and the transverse center line 54 is S2, and the distance between the center of the third guide arc segment 232 and the transverse center line 54 is S3, and satisfies: S1=S2+S3.

[0065] Among them, the spark plug 14 and the air nozzle 15 can be arranged on the longitudinal center line 53 of the combustion chamber, and the distance between the center of the spark plug 14 and the transverse center line 54 of the combustion chamber is S1, the distance between the air nozzle 15 and the transverse center line 54 is S2, and the distance between the center of the third guide arc segment 232 and the transverse center line 54 is S3, and satisfies: S1=S2+S3. Such an arrangement can ensure that the cooling medium in the converging water jacket 23 can cool the spark plug 14 and the air nozzle 15 in a targeted manner, thereby further reducing the high temperature risk in the spark plug 14 and the air nozzle 15, thereby further significantly improving the performance of the cylinder head 100 and the suppression of hydrogen pre-ignition.

[0066] According to some embodiments of the present invention, Figure 4As shown, the exhaust side water jacket 24 may include an exhaust side outer sub-water jacket 241 symmetrically arranged along the longitudinal center line 53 of the combustion chamber and an exhaust side central water jacket 242 located on the longitudinal center line 53 , and both the exhaust side outer sub-water jacket 241 and the exhaust side central water jacket 242 are connected to the converging water jacket 23 .

[0067] The exhaust side water jacket 24 may include an exhaust side outer sub-water jacket 241 symmetrically arranged along the longitudinal center line 53 of the combustion chamber and an exhaust side central water jacket 242 located on the longitudinal center line 53, so that the cooling medium in the main water jacket 20 is distributed to enter the exhaust valve seat cooling water channel 51 in three ways, namely, the exhaust side outer sub-water jacket 241 and the exhaust side central water jacket 242 symmetrically arranged along the longitudinal center line 53 of the combustion chamber, so as to achieve the surrounding cooling effect of the cooling medium on the exhaust valve and the exhaust valve seat. In addition, the exhaust side outer sub-water jacket 241 and the exhaust side central water jacket 242 are both connected to the converging water jacket 23, so that the cooling medium in the converging water jacket 23 can flow from the exhaust side outer sub-water jacket 241 and the exhaust side central water jacket 242 into the exhaust valve seat cooling water channel 51, thereby further achieving the surrounding cooling effect of the cooling medium on the exhaust valve and the exhaust valve seat.

[0068] According to some embodiments of the present invention, Figure 1 As shown, the cylinder head 100 may further include: a main water jacket exhaust channel 16 and a total exhaust channel 17 , the main water jacket exhaust channel 16 is gas-connected with the main water jacket 20 , the total exhaust channel 17 is gas-connected with the main water jacket exhaust channel 16 , and the total exhaust channel 17 is located at the highest point of the cylinder head body 10 .

[0069] Among them, the main water jacket exhaust passage 16 is gas-connected with the main water jacket 20, and the main exhaust passage 17 is gas-connected with the main water jacket exhaust passage 16, so that when the cylinder head 100 is operated for a long time and under high load, the high-temperature gas generated in the main water jacket 20 can be discharged to the outside in sequence through the main water jacket 20, the main water jacket exhaust passage 16, and the main exhaust passage 17, thereby avoiding excessive temperature in the cylinder head 100, thereby improving the safety and reliability of the cylinder head 100. In addition, the main exhaust passage 17 is located at the highest point of the cylinder head body 10, which can ensure that the main exhaust passage 17 and the main water jacket exhaust passage 16 are kept in a state of interconnection, so that when the cylinder head 100 is operated for a long time and under high load, the high-temperature gas generated in the main water jacket 20 can be discharged to the outside in sequence through the main water jacket exhaust passage 16 and the main exhaust passage 17, thereby further improving the safety and reliability of the cylinder head 100.

[0070] The vehicle according to the embodiment of the utility model includes the cylinder head 100 of the above embodiment, which can shorten the residence time of the cooling medium in the cylinder head 100, accelerate the heat dissipation rate of the cylinder head 100 and related components, avoid local overheating due to local circulation differences, thereby reducing the frequency of hydrogen pre-ignition in different working conditions, and further improving the safety and reliability of the cylinder head 100.

[0071] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0072] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A cylinder head, characterized in that: include: Cylinder head body (10); A main water jacket (20), the main water jacket (20) being located on the air intake side (11) of the cylinder head (100) and being in communication with an upper water inlet (21); an upper water jacket (30), wherein one end of the upper water jacket (30) adjacent to the intake side (11) is in communication with the main water jacket (20) and extends from the intake side (11) to the exhaust side (12) of the cylinder head (100); A lower water jacket (40), wherein the lower water jacket (40) is connected to one end of the upper water jacket (30) adjacent to the exhaust side (12), and the other end of the lower water jacket (40) is connected to a water return port (41); The height of the upper water jacket (30) gradually increases in the extending direction from the air intake side (11) to the exhaust side (12).

2. The cylinder head according to claim 1, characterized in that: Also includes: A throttling water port (50), into which at least part of the cooling medium flowing through the main water jacket (20) flows, the throttling water port (50) being connected to the cylinder water jacket of the cylinder head (100) and being suitable for introducing at least part of the cooling medium into the cylinder water jacket to cool the cylinder.

3. The cylinder head according to claim 1, characterized in that: Also includes: A first connecting channel (13), one end of the first connecting channel (13) is in communication with the main water jacket (20), and the other end of the first connecting channel (13) is in communication with the upper water jacket (30).

4. The cylinder head according to claim 1, characterized in that: The main water jacket (20) comprises: an intake side water jacket (22), a converging water jacket (23) and an exhaust side water jacket (24) which are connected in sequence, and the converging water jacket (23) surrounds the area where the spark plug (14) and the air injection nozzle (15) of the cylinder head (100) are located.

5. The cylinder head according to claim 4, characterized in that: The air intake side water jacket (22) comprises an air intake side outer sub-water jacket (221) symmetrically arranged along a longitudinal center line (53) of the combustion chamber and an air intake side central water jacket (222) located on the longitudinal center line (53); the air intake side outer sub-water jacket (221) and the air intake side central water jacket (222) are both in communication with the converging water jacket (23).

6. The cylinder head according to claim 5, characterized in that: A first flow-guiding arc section (223) is provided at one end of the intake-side outer sub-water jacket (221) adjacent to the converging water jacket (23); The converging water jacket (23) comprises a second guide arc segment (231) and a third guide arc segment (232) symmetrically arranged on a longitudinal center line (53) of the combustion chamber, the second guide arc segment (231) being located at an end of the converging water jacket (23) communicating with the intake side water jacket (22), and the third guide arc segment (232) being substantially located on a transverse center line (54) of the combustion chamber; The radius of the second flow guiding arc segment (231) is the difference between the radius of the first flow guiding arc segment (223) and the radius of the third flow guiding arc segment (232).

7. The cylinder head according to claim 6, characterized in that The spark plug (14) and the air nozzle (15) are both arranged on the longitudinal center line (53) of the combustion chamber, the distance between the center of the spark plug (14) and the transverse center line (54) of the combustion chamber is S1, the distance between the air nozzle (15) and the transverse center line (54) is S2, the distance between the center of the third guide arc segment (232) and the transverse center line (54) is S3, and the following condition is satisfied: S1=S2+S3.

8. The cylinder head according to claim 4, characterized in that The exhaust side water jacket (24) comprises an exhaust side outer sub-water jacket (241) symmetrically arranged along a longitudinal center line (53) of the combustion chamber and an exhaust side central water jacket (242) located on the longitudinal center line (53); the exhaust side outer sub-water jacket (241) and the exhaust side central water jacket (242) are both in communication with the converging water jacket (23).

9. The cylinder head according to claim 1, characterized in that: The cylinder head further comprises: a main water jacket exhaust channel (16) and a total exhaust channel (17); the main water jacket exhaust channel (16) is in gaseous communication with the main water jacket (20); the total exhaust channel (17) is in gaseous communication with the main water jacket exhaust channel (16); and the total exhaust channel (17) is located at the highest point of the cylinder head body (10).

10. A vehicle, characterized in that: include: The cylinder head (100) according to any one of claims 1 to 9.

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