CN214499248U - Cylinder for engine and vehicle - Google Patents

Abstract

The application discloses cylinder and vehicle for engine, the cylinder include: the cylinder cover is fixedly connected with the cylinder body, and the cylinder cover defines a combustion chamber; the water jacket is assisted to cylinder cap main water jacket and cylinder cap, the water jacket is assisted to the cylinder cap with the water jacket is assisted to the cylinder cap forms in the cylinder cap, the cylinder cap main water jacket is close to the central zone of combustion chamber is in order to cool off simultaneously the side of admitting air and the side of exhausting of combustion chamber, the water jacket is assisted to the cylinder cap is kept away from the central zone of combustion chamber is in order to cool off the side of admitting air of combustion chamber. The cylinder of this application assists the water jacket through increasing the cylinder cap, has solved the side cooling of admitting air and has arranged difficult problem, effectively improves the cooling demand of the combustion chamber of engine intake duct lower part, and then strengthens the reliability of near structure of the side combustion chamber that admits air, under the prerequisite that satisfies engine high thermal efficiency demand, has improved the reliability of product, increases the competitiveness of engine.

Description

Cylinder for engine and vehicle

Technical Field

The application relates to the technical field of vehicles, in particular to a cylinder for an engine and a vehicle.

Background

In order to increase the tumble strength in the cylinder, the mainstream measure at present is to increase the tumble ratio of the air inlet passage. Most host computer factories can consider the cooling of the lower outline part when adjusting the structure of the lower outline of the air inlet near the air valve, reserve the arrangement space of the cooling water jacket in advance, cause the change amplitude of the lower outline to be limited, and hardly realize the mass promotion of the tumble ratio.

SUMMERY OF THE UTILITY MODEL

The present application is directed to solving at least one of the problems in the prior art.

Therefore, an object of the present application is to provide a cylinder for an engine, which can improve the reliability of the product and improve the competitiveness of the engine on the premise of meeting the requirement of high thermal efficiency;

another object of the present application is to propose a vehicle comprising a cylinder as described above.

In order to achieve the above object, the present application provides, in one aspect, a cylinder for an engine, including: the cylinder cover is fixedly connected with the cylinder body, and the cylinder cover defines a combustion chamber; the water jacket is assisted to cylinder cap main water jacket and cylinder cap, the water jacket is assisted to the cylinder cap with the water jacket is assisted to the cylinder cap forms in the cylinder cap, the cylinder cap main water jacket is close to the central zone of combustion chamber is in order to cool off simultaneously the side of admitting air and the side of exhausting of combustion chamber, the water jacket is assisted to the cylinder cap is kept away from the central zone of combustion chamber is in order to cool off the side of admitting air of combustion chamber.

The cylinder of this application assists the water jacket through increasing the cylinder cap, has solved the side cooling of admitting air and has arranged difficult problem, effectively improves the cooling demand of the combustion chamber of engine intake duct lower part, and then strengthens the reliability of near structure of the side combustion chamber that admits air, under the prerequisite that satisfies engine high thermal efficiency demand, has improved the reliability of product, increases the competitiveness of engine.

Further, a plurality of cylinder bores are provided on the cylinder block, and the cylinder head auxiliary water jacket is configured in a bar shape and is provided outside the plurality of cylinder bores.

Furthermore, the cylinder cover auxiliary water jacket comprises a plurality of arc-shaped sections which are sequentially connected, and each arc-shaped section is arranged on the outer side of the corresponding cylinder hole.

Further, each arc-shaped section is concentric with the corresponding cylinder hole, and the difference between the inner diameter of each arc-shaped section and the diameter of the cylinder hole is 8-20 mm.

Furthermore, the cross section of the cylinder cover auxiliary water jacket is of a trapezoidal or rectangular structure.

Further, the height of the cylinder cover auxiliary water jacket is 2mm-7mm, and the width of the cylinder cover auxiliary water jacket is 4mm-10 mm.

Furthermore, a first water inlet is formed in the cylinder cover main water jacket, a second water inlet is formed in the cylinder cover auxiliary water jacket, a first water outlet is formed in the cylinder cover main water jacket, and a second water outlet is formed in the cylinder cover auxiliary water jacket; the first water inlet and the second water inlet are respectively communicated with a cylinder body water jacket of the cylinder body, and the first water outlet is communicated with the second water outlet.

Further, still be provided with a plurality of first connectors on the cylinder cap owner water jacket, still be provided with a plurality of second connectors on the cylinder cap is assisted the water jacket, every first connector with correspond the second connector intercommunication.

Further, a third water inlet and a third water outlet are formed in the cylinder water jacket of the cylinder body, and the third water inlet is communicated with the first water inlet.

In another aspect, the present application provides a vehicle including the cylinder for an engine.

Additional aspects and advantages of the present application 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 present application.

Drawings

The above and/or additional aspects and advantages of the present application 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 structural view of a cylinder head water jacket according to an embodiment of the present application;

FIG. 2 is a schematic view of the structure of the bottom surface of a cylinder head water jacket according to an embodiment of the present application;

FIG. 3 is a sectional view of a cylinder head auxiliary water jacket according to the embodiment of the application;

FIG. 4 is a schematic structural view of a block water jacket according to an embodiment of the present application;

FIG. 5 is a schematic view of a cylinder head gasket according to an embodiment of the present application;

FIG. 6 is a schematic diagram of the mating of a head jacket, a cylinder head gasket, and a block jacket according to an embodiment of the present application.

Reference numerals:

the cylinder water jacket 100 is provided with a water jacket,

a cylinder intake side water supply part 1011, a cylinder exhaust side water supply part 1012,

the cylinder head water jacket 200 is,

the main water jacket 3 of the cylinder cover,

a first water inlet 301, a main upper water hole 3011 of the cylinder cover main water jacket, an auxiliary upper water hole 3012 on the exhaust side of the cylinder cover main water jacket,

the first water discharge port 302 is provided with,

a cylinder head auxiliary water jacket 4, a second water discharge port 402, a second connection port 403,

the flow of air on the inlet side 5, the outlet side 6,

cylinder head gasket 7, cylinder head gasket main upper water hole 701, cylinder head gasket exhaust side upper water hole 702, cylinder head gasket

The water holes 703 on the air inlet side of the chip,

the cooling water pump 8 is arranged at the lower part of the cooling water pump,

radius R of the arc segment, radius R of the cylinder bore.

Detailed Description

Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present application and are not to be construed as limiting the present application.

A cylinder for an engine according to an embodiment of the present application is described below with reference to fig. 1 to 6, including: the cylinder cover, the cylinder body, the cylinder cover main water jacket 3 and the cylinder cover auxiliary water jacket 4.

Specifically, a cylinder cover is fixedly connected with a cylinder body, and the cylinder cover defines a combustion chamber; a cylinder head main water jacket and a cylinder head auxiliary water jacket are formed in the cylinder head, the cylinder head main water jacket 3 is adjacent to the central region of the combustion chamber to cool the intake side and the exhaust side of the combustion chamber simultaneously, and the cylinder head auxiliary water jacket 4 is away from the central region of the combustion chamber to cool the intake side of the combustion chamber.

The most direct method for improving the heat efficiency is to improve the combustion speed, and the main flow mode for improving the combustion speed is to improve the turbulent kinetic energy in the cylinder at the moment of ignition, wherein the turbulent kinetic energy is mainly formed by crushing and converting the tumble flow in the cylinder at the moment of compressing a top dead center, so that the tumble strength in the cylinder has positive correlation with the turbulent kinetic energy at the moment of ignition.

In order to increase the tumble strength in the cylinder, the mainstream measure at present is to increase the tumble ratio of the air inlet passage. Most host computer factories can consider the cooling of the lower outline part when adjusting the structure of the lower outline of the air inlet near the air valve, reserve the arrangement space of the cooling water jacket in advance, cause the change amplitude of the lower outline to be limited, and hardly realize the mass promotion of the tumble ratio. On the premise of not considering cooling, the air inlet side 5 of the engine with high tumble ratio and high flow coefficient can be obtained, and how to balance the reliability of the air inlet side 5, a cooling system and a product becomes a difficult point for solving the problem.

The engine intake air amount in a unit time greatly increases the heat load of the engine, and the generated heat needs to be cooled in order to protect the performance of the engine and enable the engine to operate normally. For this reason, the application provides a cylinder of engine, can realize the cooling under the high-efficient air admission, through the cooling system rational arrangement to air inlet side 5, can satisfy the cooling demand of air inlet side 5 lower part.

The cylinder has an inlet side 5 and an outlet side 6, and gases can enter the combustion chamber of the engine through an inlet port on the inlet side 5 and can be discharged through an outlet port on the outlet side 6 after being acted on by a piston in the combustion chamber.

The cylinder is provided with a cylinder cover and a cylinder body, and a combustion chamber in the cylinder cover can generate a large amount of heat to be transmitted to the cylinder cover and the cylinder body through heat transfer, so that a cylinder cover water jacket 200 arranged on the cylinder cover is used for cooling the heat on the cylinder cover; the cylinder body water jacket 100 is arranged on the cylinder body and used for taking away heat on the cylinder body.

The cylinder cover water jacket 200 mainly comprises a cylinder cover main water jacket 3 and a cylinder cover auxiliary water jacket 4, most of the prior art only has the cylinder cover main water jacket 3, the central area of a combustion chamber has higher temperature relative to other areas of the combustion chamber, and the cylinder cover main water jacket 3 is arranged between an air inlet side 5 and an exhaust side 6 and is close to the central area of the combustion chamber, so that the air inlet side 5 and the exhaust side 6 of the combustion chamber area on the cylinder cover can be cooled in time.

In order to enhance the cooling effect of the air inlet side 5, the cylinder cover auxiliary water jacket 4 is added, and the cylinder cover auxiliary water jacket 4 is arranged at a position close to the air inlet side 5, particularly at the outer side of the air inlet side 5, so that the ambient temperature of the air inlet side 5 of the combustion chamber can be reduced, and the air inlet side 5 is prevented from being deformed due to high temperature.

According to the cylinder of this application, assist water jacket 4 through increasing the cylinder cap, solved 5 coolings of side of admitting air and arranged difficult problem, effectively improve the cooling demand of the combustion chamber of engine intake duct lower part, and then strengthen the reliability of the near structure of side of admitting air 5 combustion chambers, under the prerequisite that satisfies the high thermal efficiency demand of engine, improved the reliability of product, increase the competitiveness of engine.

According to one embodiment of the present application, a plurality of cylinder bores are provided on the cylinder block, and the head sub water jacket 4 is configured in a bar shape and is provided outside the plurality of cylinder bores.

The cylinder cover auxiliary water jacket 4 is in a strip or belt structure and is distributed at the position of the air inlet side 5 of the combustion chamber, as shown in fig. 1, the cylinder cover auxiliary water jacket 4 is arranged on the outer side of a plurality of cylinder holes and extends from the front end of the cylinder cover to the rear end of the cylinder cover, equivalently, the cylinder cover auxiliary water jacket penetrates through the whole air inlet side 5, the temperature of the structure around the combustion chamber on the air inlet side 5 can be cooled, and the high-temperature deformation of the air inlet side 5 of the cylinder cover is reduced.

According to one embodiment of the present application, the cylinder head auxiliary water jacket 4 includes a plurality of sequentially connected arc-shaped sections, each of which is disposed outside the corresponding cylinder bore.

Because the external shape of the cylinder hole is generally circular or oval, the cylinder cover auxiliary water jacket 4 is matched with the shape of the cylinder hole and is also designed into an arc-shaped section, the arc-shaped section can be arc-shaped or fan-shaped, so that the outer side of each cylinder hole corresponds to one section of cylinder cover auxiliary water jacket 4, and the arc-shaped sections are sequentially connected to form the cylinder cover auxiliary water jacket 4.

Preferably, each arc-shaped section is concentric with the corresponding cylinder hole, and the difference between the inner diameter of each arc-shaped section and the diameter of the cylinder hole is 8mm-20 mm.

The cylinder cover auxiliary water jacket 4 is composed of a plurality of arc sections, and the inner diameter of each arc section has a strong correlation with the cylinder diameter of each corresponding cylinder. The arc-shaped section is arranged on the outer side of the cylinder hole, the inner diameter of the arc-shaped section needs to be larger than the diameter of the cylinder, the difference value of the inner diameter of the arc-shaped section is generally 8-20 mm, and the inner radius R of the arc-shaped section and the radius R of the cylinder are shown in figure 1.

The cylinder head gasket 7 is arranged between the cylinder and the cylinder cover, and because the cylinder head gasket 7 is provided with sealing ribs around the combustion chamber of the cylinder cover, high-temperature gas in the cylinder is prevented from entering a cooling system. If the difference value between the inner diameter of the arc-shaped section and the diameter of the cylinder is too small, the arrangement of the sealing ribs is not facilitated, the sealing performance of the sealing ribs is poor, and high-temperature gas easily enters a cooling system; if the difference value is too large, a cylinder cover bolt hole arranged on the outer side of the cylinder cover auxiliary water jacket 4 needs to move outwards, the transverse width of the whole engine is increased, the size of the engine is increased, the weight of the engine is increased, the requirement of light weight is not met, the compatibility of the engine and other parts is affected due to the increase of the size of the engine, and the influence is large.

According to one embodiment of the present application, the cross section of the cylinder head auxiliary water jacket 4 is a trapezoid or rectangular structure.

As shown in fig. 2, the cylinder head auxiliary water jacket 4 may be formed by machining or casting, wherein the casting is relatively low in cost.

The size of the cross section area of the cylinder cover auxiliary water jacket 4 is related to the height and the width of the cylinder cover auxiliary water jacket 4, and the height and the width of the cylinder cover auxiliary water jacket 4 can influence the flow speed and the flow of cooling water, so that the cooling efficiency of a cylinder cover is influenced.

According to one embodiment of the application, the height of the cylinder head auxiliary water jacket 4 is 2mm-7 mm.

The height of the cylinder cover auxiliary water jacket 4 is too small, the cylinder cover auxiliary water jacket 4 is very flat, the cross-sectional area of cooling water circulation is influenced, cooling water is difficult to pass, the flow of the cooling water is too small, the cooling performance is influenced, and the requirement for cooling the surrounding structure of the combustion chamber cannot be met; highly too big cooling capacity can reach the cooling demand of cylinder cap, but because the cylinder cap bolt hole arranges in the outside of segmental arc, the fastening force of cylinder cap bolt can be cut off by higher segmental arc at the in-process that transmits sealed muscle around the combustion chamber, seriously influences the transmission of cylinder cap bolt fastening force, leads to the sealed muscle of cylinder cap gasket 7 can't be compacted, has sealed higher risk of losing efficacy.

According to one embodiment of the application, the width of the cylinder head auxiliary water jacket 4 is 4mm-10 mm.

In order to ensure the cross-sectional area of cooling water circulation and meet the cooling requirement of the cylinder cover, the height of the arc-shaped section needs to be increased, but the transmission of the force of the cylinder cover bolt can be influenced, and the sealing is influenced, so that the width of the auxiliary water jacket 4 of the cylinder cover needs to be increased within a certain height range, and the cooling requirement of the cylinder cover is ensured; but the width of segmental arc is difficult too big, and if the width of segmental arc exceeded 10mm and can occupy the position of cylinder head bolt hole, lead to the cylinder head bolt hole to move outward, increase the transverse distance of engine, not only make the volume increase of engine, still can increase the weight of engine, be not conform to the requirement of lightweight, the engine volume increase still can influence with the compatibility of other parts, the influence is great.

According to an embodiment of the application, a first water inlet 301 is arranged on the cylinder head main water jacket 3, a second water inlet is arranged on the cylinder head auxiliary water jacket 4, a first water outlet 302 is arranged on the cylinder head main water jacket 3, and a second water outlet 402 is arranged on the cylinder head auxiliary water jacket 4; the first water inlet 301 and the second water inlet are respectively communicated with the cylinder water jacket 100 of the cylinder, and the first water outlet 302 is communicated with the second water outlet 402.

The cylinder head main water jacket 3 is provided with a first water inlet 301 and a first water discharge opening 302, and cooling water flows in from the first water inlet 301 and then is discharged from the first water discharge opening 302. The plurality of first water inlets 301 on the cylinder head main water jacket 3 are divided into a cylinder head main water jacket main water supply hole 3011 and a cylinder head main water jacket exhaust side auxiliary water supply hole 3012, and cooling water can flow in from the cylinder head main water jacket main water supply hole 3011 or the cylinder head main water jacket exhaust side auxiliary water supply hole 3012 and is discharged from the first water discharge port 302.

The head auxiliary water jacket 4 is provided with a second water inlet and a second water outlet 402, and cooling water flows in from the second water inlet and then is discharged from the second water outlet 402.

In one embodiment, the head gasket 7 is also provided with a head gasket main upper water hole 701, a head gasket exhaust side upper water hole 702, and a head gasket intake side upper water hole 703, as shown in fig. 5. The main water supply hole 701 of the cylinder head gasket corresponds to the main water supply hole 3011 of the cylinder head main water jacket, cooling water is pressed into the main water supply hole 3011 of the cylinder head main water jacket through the main water supply hole 701 of the cylinder head gasket, the size of the hole of the main water supply hole 701 of the cylinder head gasket accounts for more than 70% of the area of the main water supply holes 701 of all the cylinder head gaskets, the water supply holes 702 on the exhaust side of all the cylinder head gaskets and the water supply holes 703 on the intake side of all the cylinder head gaskets on the whole cylinder head gasket 7, the water supply holes 703 on the intake side of the cylinder head gaskets correspond to the second water inlet, and the area of the water supply holes 703 on the intake side of the cylinder head gaskets accounts for more than 5% of the area of the main water supply holes 701 of all the cylinder head gaskets, the water supply holes 702 on the exhaust side of all the cylinder head gaskets and the water supply holes 703 on the intake side of all the cylinder head gaskets.

According to an embodiment of the present application, a plurality of first connection ports are further provided on the cylinder head main water jacket 3, and a plurality of second connection ports 403 are further provided on the cylinder head auxiliary water jacket 4, and each first connection port is communicated with a corresponding second connection port 403.

The second connecting port 403 of the cylinder cover auxiliary water jacket 4 is communicated with the first connecting port of the cylinder cover main water jacket 3, and because the sectional area of the cylinder cover auxiliary water jacket 4 is relatively small, the pressure of cooling water in the cylinder cover auxiliary water jacket 4 is relatively high, and the cooling water can enter the cylinder cover main water jacket 3 through the second connecting port 403 and the first connecting port, so that the water pressure in the cylinder cover auxiliary water jacket 4 is relieved, and the flow speed and the water flow of the cooling water around the second connecting port 403 and the first connecting port are increased.

According to an embodiment of the present application, a third water inlet and a third water outlet are provided on the cylinder water jacket 100 of the cylinder, and the third water inlet is communicated with the first water inlet 301.

The cylinder further comprises a cooling water pump 8, a cylinder body exhaust side water feeding part 1012 and a cylinder body air inlet side water feeding part 1011, cooling water of the cylinder body air inlet side water feeding part 1011 passes through a cylinder cover gasket main water feeding hole 701 at the front end of a cylinder cover gasket 7, enters the cylinder cover auxiliary water jacket 4 through a second water inlet, sequentially cools a high-temperature region of the air inlet side 5 of the combustion chamber of each cylinder, enters the first water outlet 302 of the cylinder cover main water jacket 3 through the first connecting port and the second connecting port 403 in the second water outlet 402 in a communicated manner, and is converged and discharged with the cooling water of the cylinder cover auxiliary water jacket 4. It is understood that the cooling water in the whole cylinder is communicated, and the cooling water can circulate in the cylinder.

Cooling water of the engine enters the cylinder water jacket 100 from a third water inlet through the cooling water pump 8, and the cooling water circularly flows in the cylinder water jacket 100, wherein the third water inlet is divided into a cylinder air inlet side water supply part 1011 and a cylinder air outlet side water supply part 1012. The cooling water in the cylinder body water jacket 100 partly enters the cylinder head main water jacket 3 from the cylinder head gasket main upper water hole 701, partly enters the cylinder head exhaust side upper water hole 6 from the cylinder head gasket exhaust side upper water hole, and the rest circulates in the cylinder body. The cooling water entering the cylinder cover flows to the rear end from the front end in sequence, the cooling water of the first water outlet 302 on the cylinder cover main water jacket 3 is merged with the cooling water of the second water outlet 402 on the cylinder cover auxiliary water jacket 4 and then discharged, and the cooling water enters a cooling circulation pipeline and a radiator of the whole vehicle and finally returns to the front of the cooling water pump 8 for continuous cooling circulation.

In one embodiment, the cooling water flowing through the cylinder cover auxiliary water jacket 4 has a high flow speed ratio of 3-6 m/s, so that a sufficient flow area is ensured, the cooling efficiency is obviously improved, and high-temperature heat around the air inlet side 5 of the combustion chamber is effectively taken away. The maximum temperature of the region can be reduced by 30-80 degrees through coupling analysis, and the cooling water flowing through the cylinder head auxiliary water jacket 4 on the air inlet side 5 can enter the cylinder head main water jacket 3 through the first connecting port 303 and the second connecting port 403, so that the flow speed and the flow rate of the cooling water in the surrounding region are improved, and the high-temperature structure among a plurality of combustion chambers can be cooled conveniently.

According to the vehicle in the embodiment of the application, the cylinder is arranged.

The engine of the vehicle can provide high heat efficiency, and the cooling system can effectively cool the engine and prevent the engine from overheating, so that the vehicle provided with the engine has higher market competitiveness.

In the description of the present application, it is to be understood that the terms "center", "lateral", "width", "height", "upper", "lower", "front", "rear", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the present application.

In the description of the present application, "the first feature" and "the second feature" may include one or more of the features.

In the description of the present application, "a plurality" means two or more.

In the description of the present application, the first feature being "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 not directly but via another feature therebetween.

In the description of the present application, the first feature being "on," "above" and "over" the second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is at a higher level than the second feature.

In the description herein, reference to the description of the terms "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like means 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 application. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present application 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 application, the scope of which is defined by the claims and their equivalents.

Claims (10)

1. A cylinder for an engine, comprising:

the cylinder cover is fixedly connected with the cylinder body, and the cylinder cover defines a combustion chamber;

the water jacket is assisted to cylinder cap main water jacket and cylinder cap, the water jacket is assisted to the cylinder cap with the water jacket is assisted to the cylinder cap forms in the cylinder cap, the cylinder cap main water jacket is close to the central zone of combustion chamber is in order to cool off simultaneously the side of admitting air and the side of exhausting of combustion chamber, the water jacket is assisted to the cylinder cap is kept away from the central zone of combustion chamber is in order to cool off the side of admitting air of combustion chamber.

2. The cylinder for an engine according to claim 1, wherein a plurality of cylinder bores are provided on the block, and the head sub-water jacket is configured in a strip shape and is provided outside the plurality of cylinder bores.

3. The cylinder for the engine according to claim 2, wherein the head sub-water jacket includes a plurality of sequentially connected arc-shaped sections, each of which is disposed outside the corresponding cylinder bore.

4. The cylinder for an engine according to claim 3, wherein each of the arcuate segments is concentric with the corresponding cylinder bore, and a difference between an inner diameter of each of the arcuate segments and an aperture diameter of the cylinder bore is 8mm to 20 mm.

5. The cylinder for the engine according to claim 1, wherein the cross section of the head auxiliary water jacket is a trapezoidal or rectangular structure.

6. The cylinder for the engine according to claim 5, wherein the height of the head auxiliary water jacket is 2mm to 7mm, and the width of the head auxiliary water jacket is 4mm to 10 mm.

7. The cylinder for the engine according to claim 1, wherein a first water inlet is provided on the cylinder head main water jacket, a second water inlet is provided on the cylinder head auxiliary water jacket, a first water discharge port is provided on the cylinder head main water jacket, and a second water discharge port is provided on the cylinder head auxiliary water jacket;

the first water inlet and the second water inlet are respectively communicated with a cylinder body water jacket of the cylinder body, and the first water outlet is communicated with the second water outlet.

8. The cylinder for the engine according to claim 7, wherein a plurality of first connecting ports are further arranged on the main water jacket of the cylinder cover, a plurality of second connecting ports are further arranged on the auxiliary water jacket of the cylinder cover, and each first connecting port is communicated with the corresponding second connecting port.

9. The cylinder for the engine according to claim 7, characterized in that a third water inlet and a third water outlet are provided on the block water jacket of the block, the third water inlet communicating with the first water inlet.

10. A vehicle, characterized by comprising a cylinder according to any one of claims 1-9.

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