CN217206670U - Engine and automobile - Google Patents

Abstract

The utility model belongs to the engine field, concretely relates to engine and car, engine include cylinder head and cylinder body, the cylinder head is located on the cylinder body, the cylinder head has upper water jacket chamber, lower floor's water jacket chamber and intercommunicating pore, lower floor's water jacket chamber is located upper water jacket chamber with between the cylinder body, just lower floor's water jacket chamber with upper water jacket chamber interval sets up, upper water jacket chamber with lower floor's water jacket chamber passes through the intercommunicating pore intercommunication, just the intercommunicating pore runs through the surface of cylinder head. In this application, lower floor's water jacket chamber sets up and passes through the intercommunicating pore intercommunication with upper water jacket chamber interval, and the intercommunicating pore runs through the surface of cylinder head, and the surface processing can be followed to the intercommunicating pore to eliminate the burr of upper water jacket chamber and lower floor's water jacket chamber junction, avoid the burr to influence the cooling water and circulate between upper water jacket chamber and lower floor's water jacket chamber, make combustion chamber and exhaust structure obtain fully cooling, reduce the thermal stress of cylinder head, promote the life of engine.

Description

Engine and automobile

Technical Field

The application belongs to the field of engines, and particularly relates to an engine and an automobile.

Background

With the continuous development of the related technologies of the engine, the power density of the engine is continuously improved, and the requirements on parts are more and more strict. The cylinder head is one of the most critical parts of the engine, and the reliability of the cylinder head is closely related to casting technology and cooling effect. The double-layer water jacket can well meet the requirement that the cooling effect is preferentially enhanced in a high-temperature area of the bottom surface of the cylinder cover, but the process for casting the cylinder cover with the double-layer water jacket becomes more complicated.

According to the existing engine, burrs are easily generated at the connecting positions of the upper layer water jacket and the lower layer water jacket in the casting process, the burrs easily influence the circulation of cooling water between the upper layer water jacket and the lower layer water jacket, even blockage between the upper layer water jacket and the lower layer water jacket can be caused, when the circulation of the cooling water is not smooth, a water flow dead zone is easily generated in a high-heat area of a combustion chamber, the cooling requirement is not met, the cylinder cover is cracked, and even the whole engine is scrapped.

SUMMERY OF THE UTILITY MODEL

An object of this application is to provide an engine and car to burr between the upper and lower floor's water jacket is eliminated, cooling water circulation between the upper and lower floor's water jacket is avoided the burr influence.

In order to achieve the above object, the present application provides an engine comprising:

a cylinder body; and

the cylinder cover is arranged on the cylinder body and is provided with an upper-layer water jacket cavity, a lower-layer water jacket cavity and a communication hole, the lower-layer water jacket cavity is positioned between the upper-layer water jacket cavity and the cylinder body, and the lower-layer water jacket cavity and the upper-layer water jacket cavity are arranged at intervals;

the upper-layer water jacket cavity and the lower-layer water jacket cavity are communicated through the communication hole, and the communication hole penetrates through the outer surface of the cylinder cover.

Optionally, the lower water jacket cavity includes a drainage channel, the upper water jacket cavity includes a water inlet channel, a partition structure is arranged between the drainage channel and the water inlet channel, the drainage channel is communicated with the water inlet channel through the communication hole, and the partition structure is recessed inwards to form the communication hole.

Optionally, the drainage channel includes a first channel and a second channel that are arranged at an interval, the water inlet channel includes a third channel and a fourth channel that are arranged at an interval, the communication hole includes a first communication hole and a second communication hole that are arranged at an interval, the first channel and the third channel are communicated through the first communication hole, and the second channel and the fourth channel are communicated through the second communication hole;

wherein a flow area of the first communication hole and a flow area of the second communication hole are different.

Optionally, the upper water jacket cavity further includes a warm air water outlet, a distance between the warm air water outlet and the third flow channel is smaller than a distance between the warm air water outlet and the fourth flow channel, and a depression depth of the first communicating hole is smaller than a depression depth of the second communicating hole.

Optionally, the cylinder cover further includes an air overflow channel, the air overflow channel is communicated with the warm air water outlet, and the warm air water outlet is located at the farthest position from the upper water jacket cavity to the cylinder body.

Optionally, the engine further includes a sealing plug, the sealing plug is disposed in the communication hole, and the sealing plug and the partition structure are disposed at an interval.

Optionally, the cylinder head further comprises an exhaust structure, and the exhaust structure is arranged between the upper water jacket cavity and the lower water jacket cavity;

the cylinder head further includes a combustion chamber;

the lower water jacket cavity comprises a water inlet, a first cooling branch and a first water outlet, the first cooling branch is used for cooling the exhaust structure and the combustion chamber, the water inlet is communicated with the first cooling branch, and the first cooling branch is communicated with the cylinder body through the first water outlet.

Optionally, the lower water jacket cavity further comprises a second cooling branch and a second water outlet, the second cooling branch is used for cooling the exhaust structure and the combustion chamber, the second cooling branch is communicated with the drainage flow channel, and the second water outlet is communicated with the cylinder body.

Optionally, the lower jacket cavity includes a first upper water gap and a second upper water gap, the water inlet is communicated with the first cooling branch through the first upper water gap, the water inlet is communicated with the second cooling branch through the two second upper water gaps, and the two second upper water gaps are respectively located at two sides of the first upper water gap;

a cylinder cover gasket is arranged between the cylinder cover and the cylinder body and comprises a first water passing hole and a second water passing hole, the first water outlet is communicated with the cylinder body through the first water passing hole, the upper-layer water jacket cavity comprises a second water outlet, the second water outlet is communicated with the water inlet flow channel, and the second water outlet is communicated with the cylinder body through the second water passing hole;

the flow area of the first water through hole is positively correlated with the flow area of the first water feeding port, and the flow area of the second water through hole is positively correlated with the flow area of the second water feeding port.

The present application further provides an automobile comprising:

an engine;

a wheel;

and the transmission mechanism is connected with the wheels and the engine.

The application discloses engine and car have following beneficial effect:

in this application, lower floor's water jacket chamber sets up and passes through the intercommunicating pore intercommunication with upper water jacket chamber interval, the intercommunicating pore runs through the surface of cylinder head, consequently, the surface processing of cylinder head can be followed to the intercommunicating pore, can eliminate the burr of upper water jacket chamber and lower floor's water jacket chamber junction like this, reduce the casting degree of difficulty of cylinder head, and then can avoid burr influence cooling water to circulate between upper water jacket chamber and lower floor's water jacket chamber, make combustion chamber and exhaust structure's high temperature region obtain fully cooled off, reduce the thermal stress of cylinder head, promote the life of engine.

Other features and advantages of the present application will be apparent from the following detailed description, or may be learned by practice of the application.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and together with the description, serve to explain the principles of the application. It is obvious that the drawings in the following description are only some embodiments of the application, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.

FIG. 1 is a schematic structural diagram of an internal cavity of a cylinder head in an embodiment of the present application.

Fig. 2 is a schematic structural diagram of a lower water jacket cavity in the embodiment of the application.

Fig. 3 is a schematic structural diagram of an upper water jacket cavity in the embodiment of the application.

Fig. 4 is a schematic view of the end surface of the cylinder head opposite to the block in the embodiment of the present application.

FIG. 5 is a schematic view showing the assembly of the upper and lower water jacket cavities in the embodiment of the present application.

Fig. 6 is a schematic structural view of a communication hole in the embodiment of the present application.

Fig. 7 is a schematic view of the positions of the first positioning hole and the second positioning hole in the embodiment of the present application.

Description of reference numerals:

100. an upper water jacket cavity; 110. a water inlet flow passage; 111. a third flow path; 112. a fourth flow path; 120. a warm air outlet; 130. a second water outlet; 140. a first positioning hole;

200. a lower water jacket cavity; 210. a drainage flow channel; 211. a first flow passage; 212. a second flow passage; 220. a water inlet; 230. a first cooling branch; 240. a first water outlet; 250. a second cooling branch; 260. a second positioning hole;

300. a communicating hole; 310. a first communication hole; 320. a second communication hole;

400. an upper exhaust duct; 410. a first laryngeal opening; 420. a first exhaust port;

500. a lower exhaust duct; 510. a second throat; 520. a second exhaust port;

600. a combustion chamber;

700. a separator structure.

Detailed Description

Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art.

Furthermore, the described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to give a thorough understanding of embodiments of the application. One skilled in the relevant art will recognize, however, that the subject matter of the present application can be practiced without one or more of the specific details, or with other methods, components, devices, steps, and so forth. In other instances, well-known methods, devices, implementations, or operations have not been shown or described in detail to avoid obscuring aspects of the application.

The present application will be described in further detail with reference to the following drawings and specific examples. It should be noted that the technical features mentioned in the embodiments of the present application described below may be combined with each other as long as they do not conflict with each other. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present application and should not be construed as limiting the present application.

Referring to fig. 1, 5 and 6, the engine includes: the cylinder body and cylinder head, the cylinder head is located and is located on the cylinder body. The cylinder head has an upper water jacket cavity 100, a lower water jacket cavity 200 and a communication hole 300, the lower water jacket cavity 200 is located between the upper water jacket cavity 100 and the cylinder body, and the lower water jacket cavity 200 is spaced apart from the upper water jacket cavity 100. That is, there is no direct connection between the lower water jacket cavity 200 and the upper water jacket cavity 100. The upper and lower water jacket chambers 100 and 200 are communicated by a communication hole 300, and the communication hole 300 penetrates the outer surface of the cylinder head, that is, the communication hole 300 is extended inward from the outer surface of the cylinder head. The cylinder head has opposite front and rear ends, the rear end of the cylinder head being the end near the flywheel of the engine, the cylinder head having opposite upper and lower ends, the cylinder block being located at the lower end of the cylinder head, the cylinder head having opposite left and right ends, and the outer surface where the communication hole 300 is located may be the right end face of the cylinder head.

The cylinder head may further include an exhaust structure disposed between the upper water jacket cavity 100 and the lower water jacket cavity 200, and a combustion chamber 600. The exhaust structure may include an upper exhaust duct 400 and a lower exhaust duct 500, the upper exhaust duct 400 is close to the upper water jacket cavity 100, and the lower exhaust duct 500 is close to the lower water jacket cavity 200, that is, the upper water jacket cavity 100, the upper exhaust duct 400, the lower exhaust duct 500, the lower water jacket cavity 200, and the combustion chamber 600 are sequentially arranged from top to bottom.

The lower water jacket cavity 200 and the combustion chamber 600 are separated, the wall thickness between the two can be 6-8 mm, the combustion chamber 600 is partially or completely coated by the lower water jacket cavity 200, the exhaust structure is communicated with the uniform combustion chamber 600, and the wall thickness of the exhaust structure, the upper water jacket cavity 100 and the lower water jacket cavity 200 can be 4 mm. The lower water jacket cavity 200 mainly cools the lower surface of the exhaust structure of the combustion chamber 600, and the upper water jacket cavity 100 mainly cools the upper surface of the exhaust structure.

It should be noted that the outer surface of the communication hole 300 may be the right end surface of the cylinder head, but is not limited thereto, and the outer surface of the communication hole 300 may also be other end surfaces of the cylinder head, as the case may be.

The cylinder cover of the engine is usually manufactured by adopting a casting process, burrs are easily generated at the joint of the upper-layer water jacket cavity 100 and the lower-layer water jacket cavity 200 when the existing cylinder cover is cast, and the burrs cannot be detected and even more cannot be deburred because the burrs are positioned in the water jacket cavity.

In this application, lower floor's water jacket chamber 200 sets up and communicates with upper water jacket chamber 100 interval and through intercommunicating pore 300, intercommunicating pore 300 runs through the surface of cylinder head, consequently, intercommunicating pore 300 can follow the surface processing of cylinder head, can eliminate the burr of upper water jacket chamber 100 and lower floor's water jacket chamber 200 junction like this, reduce the casting degree of difficulty of cylinder head, and then can avoid the burr to influence the cooling water and circulate between upper water jacket chamber 100 and lower floor's water jacket chamber 200, make combustion chamber 600 and exhaust structure's high temperature region obtain fully cooling, reduce the thermal stress of cylinder head, promote the life of engine.

For example, referring to fig. 1 to 6, the lower jacket chamber 200 includes a drain flow passage 210, the upper jacket chamber 100 includes a water inlet flow passage 110, a partition structure 700 is disposed between the drain flow passage 210 and the water inlet flow passage 110, the drain flow passage 210 and the water inlet flow passage 110 are communicated through a communication hole 300, and the partition structure 700 is recessed inward to form the communication hole 300.

Specifically, the water inlet flow path 110 and the water discharge flow path 210 may be arranged in parallel, and after the cylinder head blank is cast, a portion of the partition structure 700 between the water inlet flow path 110 and the water discharge flow path 210 is machined away from the outside to form the communication hole 300, such that the communication hole 300 communicates the water inlet flow path 110 and the water discharge flow path 210 at the side surfaces thereof.

It should be noted that the water inlet flow channel 110 and the water outlet flow channel 210 may be disposed in parallel, but is not limited thereto, and the water inlet flow channel 110 and the water outlet flow channel 210 may also have a certain included angle, which may be determined as the case may be. The communication hole 300 may be disposed at the side of the inlet flow path 110 and the drain flow path 210, but is not limited thereto, and the communication hole 300 may be opened up and down to communicate the inlet flow path 110 and the drain flow path 210, as the case may be.

The communication hole 300 communicates the water inlet flow passage 110 and the water discharge flow passage 210 at the side surfaces thereof, so that when the cylinder head is cast, the upper water jacket sand core and the lower water jacket sand core can be positioned by connecting the water inlet flow passage 110 and the water discharge flow passage 210 with the rear end surface of the cylinder head, thereby reducing the manufacturing difficulty of the cylinder head.

Referring to fig. 1, 5 and 6, the drain flow path 210 includes a first flow path 211 and a second flow path 212 which are spaced apart from each other, the inlet flow path 110 includes a third flow path 111 and a fourth flow path 112 which are spaced apart from each other, the communication hole 300 includes a first communication hole 310 and a second communication hole 320 which are spaced apart from each other, the first flow path 211 and the third flow path 111 are communicated with each other through the first communication hole 310, and the second flow path 212 and the fourth flow path 112 are communicated with each other through the second communication hole 320. The first flow channel 211 and the second flow channel 212 are disposed at an interval, that is, the first flow channel 211 and the second flow channel 212 are two parallel flow channels, the corresponding third flow channel 111 and the fourth flow channel 112 are two parallel flow channels, and the first communication hole 310 and the second communication hole 320 are two hole structures parallel to each other. Wherein the flow area of the first communication hole 310 and the flow area of the second communication hole 320 are different.

The upper water jacket cavity 100 and the lower water jacket cavity 200 are both irregular in shape, and even if the first flow passage 211 and the second flow passage 212 are symmetrically arranged, the third flow passage 111 and the fourth flow passage 112 are also symmetrically arranged, and the water inlet flow rates of the third flow passage 111 and the fourth flow passage 112 may be different. The engine generally includes a plurality of combustion chambers 600, and the inflow amount of water to the third flow passage 111 and the fourth flow passage 112 can be controlled by controlling the flow area of the first communication hole 310 and the flow area of the second communication hole 320, so that the inflow amount of water to the third flow passage 111 and the fourth flow passage 112 can be approximated, thereby uniformly cooling the plurality of combustion chambers 600.

Note that the flow area of the first communication hole 310 and the flow area of the second communication hole 320 may be different, but the present invention is not limited thereto, and the flow area of the first communication hole 310 and the flow area of the second communication hole 320 may be the same. The flow area of the first communication hole 310 is the same as the flow area of the second communication hole 320, and the structure of the upper water jacket chamber 100 and the lower water jacket chamber 200 may be improved to make the water inflow resistance of the third flow passage 111 and the fourth flow passage 112 close, so that the water inflow rate of the third flow passage 111 and the fourth flow passage 112 is close, as the case may be.

Referring to fig. 3, the upper water jacket cavity 100 further includes a warm air outlet 120, and a distance between the warm air outlet 120 and the third flow channel 111 is smaller than a distance between the warm air outlet 120 and the fourth flow channel 112. Since the third flow channel 111 is closer to the warm air outlet 120, the resistance of the third flow channel 111 to water inflow is smaller. The inner diameter of the first communication hole 310 is equal to the inner diameter of the second communication hole 320 and the depth of the first communication hole 310 is smaller than the depth of the second communication hole 320, i.e., the depth of the first communication hole 310 is shallower. The distance from the separator structure 700 to the outer surface is the depth of the communication hole 300. The depth of the first communication hole 310 is shallower, and the flow area thereof is smaller, so that the inflow rates of the third flow passage 111 and the fourth flow passage 112 can be close.

It should be noted that the inner diameter of the first communication hole 310 is equal to the inner diameter of the second communication hole 320, and the depth of the first communication hole 310 is smaller than the depth of the second communication hole 320, but the invention is not limited thereto, and the inner diameter of the first communication hole 310 may be different from the inner diameter of the second communication hole 320, and the depth of the first communication hole 310 may be the same as the depth of the second communication hole 320, as the case may be.

The inner diameter of the first communication hole 310 is equal to the inner diameter of the second communication hole 320, and the depth of the first communication hole 310 is smaller than the depth of the second communication hole 320, i.e., the depth of the first communication hole 310 is shallower, so that the inflow rates of the third flow channel 111 and the fourth flow channel 112 can be close to each other, and the plurality of combustion chambers 600 can be uniformly cooled.

In some embodiments, the cylinder head further includes an air overflow passage, the air overflow passage communicates with the warm air outlet 120, and the warm air outlet 120 is located at the farthest position from the upper water jacket cavity 100 to the cylinder block.

It should be noted that the warm air outlet 120 may be disposed at the farthest position from the upper water jacket cavity 100 to the cylinder, but is not limited thereto, and the warm air outlet 120 does not have to be disposed at the farthest position from the upper water jacket cavity 100 to the cylinder, and an air overflow channel may also be separately disposed at the farthest position from the upper water jacket cavity 100 to the cylinder, as the case may be.

Air may be dissolved in cooling water of the engine, the air is easily separated out from the cooling water after the temperature of the cooling water rises, the warm air water outlet 120 is arranged at the farthest position from the upper water jacket cavity 100 to the cylinder body, an air overflow channel is arranged at the warm air water outlet 120, the air can be discharged, and the influence of the air on the flow of the cooling water between the upper water jacket cavity 100 and the lower water jacket cavity 200 is avoided.

In some embodiments, the engine further includes a sealing plug disposed in the communication hole 300, the sealing plug being spaced apart from the partition structure 700, i.e., sealing only between the communication hole 300 and the outer surface of the cylinder head, and the water inlet flow passage 110 and the drain flow passage 210 are communicated through the communication hole 300. The sealing plug may be configured as a bowl-shaped structure, and one side of the sealing plug close to the partition structure 700 is an arc-shaped surface.

The communication hole 300 and the outer surface of the cylinder cover can be sealed by the sealing plug to prevent cold water from flowing out, the sealing plug can be arranged into a bowl-shaped structure, one side of the sealing plug close to the partition plate structure 700 is an arc-shaped surface, and the sealing plug can be prevented from blocking the water inlet flow channel 110 and the water drainage flow channel 210.

Referring to fig. 1, the cylinder head further includes an exhaust structure disposed between the upper water jacket cavity 100 and the lower water jacket cavity 200, the exhaust structure including an upper exhaust duct 400 and a lower exhaust duct 500.

Referring to fig. 2, 4 and 6, the lower water jacket cavity 200 includes a water inlet 220, a first cooling branch 230 and a first water outlet 240 for cooling the exhaust structure and the combustion chamber 600, the first cooling branch 230 is located between the exhaust structure and the combustion chamber 600 and at least partially surrounds the combustion chamber 600, the water inlet 220 is communicated with the first cooling branch 230, and the first cooling branch 230 is communicated with the water jacket of the cylinder through the first water outlet 240. The number of the water inlets 220, the first cooling branches 230, and the first water outlets 240 is set according to the number of the combustion chambers 600, so that different combustion chambers 600 have the same or similar cooling structure.

The combustion chambers 600 and high temperature regions such as the nose bridge region of the exhaust structure can be cooled through the first cooling branch 230, and meanwhile, the number of the water inlets 220, the first cooling branch 230 and the first water outlets 240 is set according to the number of the combustion chambers 600, so that different combustion chambers 600 have the same or similar cooling structure, and further, the combustion chambers 600 are uniformly cooled.

Referring to fig. 1 to 6, the lower water jacket cavity 200 further includes a second cooling branch 250 for cooling the exhaust structure and the combustion chamber 600, the second cooling branch 250 is located between the exhaust structure and the combustion chamber 600, the second cooling branch 250 and the first cooling branch 230 are located on both sides of the water inlet 220, and the second cooling branch 250 is communicated with the water drainage flow passage 210. The upper water jacket cavity 100 comprises a second water outlet 130, cooling water enters the upper water jacket cavity 100 from the drainage flow channel 210, cools the upper surface of the exhaust structure, and then enters the water jacket of the cylinder body through the second water outlet 130. The number of the second water outlets 130 is set according to the number of the combustion chambers 600.

Divide into two branches with lower floor's water jacket cavity 200, first cooling branch 230 cools off combustion chamber 600 and exhaust structure's lower surface, and second cooling branch 250 lets in upper water jacket cavity 100 with cooling water, cools off exhaust structure's upper surface, makes exhaust structure upper and lower simultaneous cooling, avoids exhaust structure's high temperature. The upper water jacket cavity 100 and the lower water jacket cavity 200 cool the cylinder cover simultaneously, and the temperature difference between the upper position and the lower position of the cylinder cover is smaller.

Referring to fig. 1 to 6, the lower jacket cavity 200 includes a first upper water gap and a second upper water gap, the water inlet 220 is communicated with the first cooling branch 230 through the first upper water gap, the water inlet 220 is communicated with the second cooling branch 250 through two second upper water gaps, and the two second upper water gaps are respectively located at two sides of the first upper water gap.

A cylinder cover gasket is arranged between the cylinder cover and the cylinder body and comprises a first water through hole and a second water through hole, the first water outlet 240 is communicated with the water jacket of the cylinder body through the first water through hole, and the second water outlet 130 is communicated with the water jacket of the cylinder body through the second water through hole. The flow area of the first water passing hole is positively correlated with the flow area of the first water feeding port, and the flow area of the second water passing hole is positively correlated with the flow area of the second water feeding port. The first water outlet 240 and the second water outlet 130 are provided in plurality according to the number of the combustion chambers 600.

The flow of the first water outlet 240 and the second water outlet 130 can be adjusted by the cylinder head gasket, so that the flow of cooling water in the upper water jacket cavity 100 and the lower water jacket cavity 200 can be adjusted, meanwhile, the first water outlet 240 and the second water outlet 130 are arranged in a plurality according to the number of the combustion chambers 600, and the flow of the cooling water for cooling different combustion chambers 600 can also be adjusted by the cylinder head gasket, so that a plurality of combustion chambers 600 can be uniformly cooled.

Referring to fig. 1 to 7, the cylinder head is manufactured by casting, during casting, an upper layer water jacket sand core, an upper exhaust duct sand core, a lower layer water jacket sand core and a combustion chamber mold are sequentially arranged, the upper layer water jacket sand core forms an upper layer water jacket cavity 100, the upper exhaust duct sand core forms an upper exhaust duct 400, the lower exhaust duct sand core forms a lower exhaust duct 500, the lower layer water jacket sand core forms a lower layer water jacket cavity 200, and the combustion chamber mold forms a combustion chamber 600.

The upper water jacket cavity 100 further includes two first positioning holes 140 at both ends thereof, and the lower water jacket cavity 200 further includes two second positioning holes 260 at both ends thereof. The upper exhaust duct 400 includes a first throat 410 and a first exhaust port 420, the lower exhaust duct 500 includes a second throat 510 and a second exhaust port 520, the first throat 410 and the second throat 510 are four and all communicate with the combustion chamber 600, the first exhaust port 420 and the second exhaust port 520 are all located at one end of the communicating hole 300, and the right end face of the cylinder head can be all set.

When the cylinder head is cast, the lower-layer water jacket sand core is positioned on a bottom die of a casting die through the first water outlet 240 and the water inlet 220 and positioned on a side die of the casting die through the second positioning hole 260 and the drainage runner 210; the upper water jacket sand core is positioned on a bottom die of the casting die through the second water outlet 130 and positioned on a side die of the casting die through the first positioning hole 140, the warm air water outlet 120 and the water inlet runner 110; the upper air exhaust duct sand core and the lower air exhaust duct sand core are fixed in an adhesion mode, the upper air exhaust duct sand core is positioned on a combustion chamber mould through a first throat 410, and is positioned on a side mould of a casting mould through a first exhaust port 420; the lower airway core is positioned in the combustion chamber mold through a second throat 510 and in the side mold of the casting mold through a second exhaust 520.

The present application further provides an automobile comprising: the engine, the wheel and the transmission mechanism are connected.

The engine includes the cylinder head, lower floor's water jacket chamber 200 sets up and communicates with upper water jacket chamber 100 interval and through intercommunicating pore 300 in the cylinder head, intercommunicating pore 300 runs through the surface of cylinder head, consequently, intercommunicating pore 300 can follow the surface processing of cylinder head, can eliminate the burr of upper water jacket chamber 100 and lower floor's water jacket chamber 200 junction like this, reduce the casting degree of difficulty of cylinder head, and then can avoid burr influence cooling water to circulate between upper water jacket chamber 100 and lower floor's water jacket chamber 200, make combustion chamber 600 and exhaust structure's high temperature region obtain fully cooling, reduce the thermal stress of cylinder head, promote the life of engine.

The terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," and the like are to be construed broadly and include, for example, fixed connections, removable connections, or integral parts thereof; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as the case may be.

In the description herein, references to the description of the terms "some embodiments," "exemplary," etc. mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or exemplary is included in at least one embodiment or exemplary of the application. In this specification, the schematic representations of the terms used above are not necessarily intended to 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. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although embodiments of the present application have been shown and described, it is understood that the above embodiments are illustrative and should not be construed as limiting the present application and that various changes, modifications, substitutions and alterations can be made therein by those skilled in the art within the scope of the present application, and therefore all changes and modifications that come within the meaning of the claims and the description of the invention are to be embraced therein.

Claims (10)

1. An engine, comprising:

a cylinder body; and

the cylinder cover is arranged on the cylinder body and is provided with an upper-layer water jacket cavity, a lower-layer water jacket cavity and a communication hole, the lower-layer water jacket cavity is positioned between the upper-layer water jacket cavity and the cylinder body, and the lower-layer water jacket cavity and the upper-layer water jacket cavity are arranged at intervals;

the upper-layer water jacket cavity and the lower-layer water jacket cavity are communicated through the communication hole, and the communication hole penetrates through the outer surface of the cylinder cover.

2. The engine according to claim 1, characterized in that the lower jacket chamber includes a drain flow passage, the upper jacket chamber includes a water inlet flow passage, a partition structure is provided between the drain flow passage and the water inlet flow passage, the drain flow passage and the water inlet flow passage communicate through the communication hole, and the partition structure is recessed inward to form the communication hole.

3. The engine according to claim 2, characterized in that the drain flow passage includes a first flow passage and a second flow passage which are provided at an interval, the water intake flow passage includes a third flow passage and a fourth flow passage which are provided at an interval, the communication hole includes a first communication hole and a second communication hole which are provided at an interval, the first flow passage and the third flow passage communicate through the first communication hole, and the second flow passage and the fourth flow passage communicate through the second communication hole;

wherein a flow area of the first communication hole and a flow area of the second communication hole are different.

4. The engine of claim 3, wherein the upper jacket chamber further comprises a warm air outlet, a distance between the warm air outlet and the third flow passage is smaller than a distance between the warm air outlet and the fourth flow passage, and a depression depth of the first communication hole is smaller than a depression depth of the second communication hole.

5. The engine of claim 4, wherein the cylinder head further comprises an air overflow passage, the air overflow passage communicating with the warm air outlet port, the warm air outlet port being located at a farthest position of the upper jacket cavity to the cylinder block.

6. An engine according to claim 2, further comprising a sealing plug disposed within the communication bore, the sealing plug being spaced from the bulkhead structure.

7. The engine of claim 2, wherein the cylinder head further comprises an exhaust structure disposed between the upper and lower water jacket cavities;

the cylinder head further includes a combustion chamber;

the lower water jacket cavity comprises a water inlet, a first cooling branch and a first water outlet, the first cooling branch is located between the exhaust structure and the combustion chamber and at least partially surrounds the combustion chamber, the water inlet is communicated with the first cooling branch, and the first cooling branch is communicated with the cylinder body through the first water outlet.

8. The engine of claim 7, wherein the lower water jacket cavity further comprises a second cooling branch between the exhaust structure and the combustion chamber, the second cooling branch being located on either side of the water inlet from the first cooling branch, the second cooling branch being in communication with the water drain flow passage.

9. The engine of claim 8, wherein said lower jacket cavity includes a first water inlet port and a second water inlet port, said water inlet port communicating with said first cooling branch through said first water inlet port, said water inlet port communicating with said second cooling branch through two of said second water inlet ports, said two of said second water inlet ports being located on either side of said first water inlet port;

a cylinder cover gasket is arranged between the cylinder cover and the cylinder body and comprises a first water passing hole and a second water passing hole, the first water outlet is communicated with the cylinder body through the first water passing hole, the upper water jacket cavity comprises a second water outlet, the second water outlet is communicated with the water inlet flow channel, and the second water outlet is communicated with the cylinder body through the second water passing hole;

the flow area of the first water through hole is positively correlated with the flow area of the first water feeding port, and the flow area of the second water through hole is positively correlated with the flow area of the second water feeding port.

10. An automobile, comprising:

an engine according to any one of claims 1 to 9;

a wheel;

and the transmission mechanism is connected with the wheels and the engine.

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