CN213899123U

CN213899123U - Cylinder cover water jacket structure of horizontally-opposed engine

Info

Publication number: CN213899123U
Application number: CN202023034144.9U
Authority: CN
Inventors: 王森; 汤柠铭; 贺鹏; 杨旭飞; 王燕
Original assignee: Hunan Minhang Automobile Technology Co ltd
Current assignee: Hunan Minhang Automobile Technology Co ltd
Priority date: 2020-12-16
Filing date: 2020-12-16
Publication date: 2021-08-06
Anticipated expiration: 2030-12-16

Abstract

The utility model discloses a cylinder cover water jacket structure of a horizontally-opposed engine, which comprises a cylinder cover water jacket, a water inlet area and a water outlet area, wherein the water inlet area is arranged at the bottom of the cylinder cover water jacket and is communicated with the cylinder cover water jacket, and the water outlet area is arranged at the top of the cylinder cover water jacket and is communicated with the cylinder cover water jacket; and the cooling liquid flows into the cylinder cover water jacket from the water inlet area and is discharged through the water outlet area to form a cooling water path flowing from bottom to top. The utility model provides a cylinder cap water jacket structure forms by lower supreme cooling water route, and the discharge bubble that not only can be timely avoids the production of cavitation erosion phenomenon, can also avoid the production in flow blind spot, has guaranteed the water jacketed cooling effect of cylinder cap.

Description

Cylinder cover water jacket structure of horizontally-opposed engine

Technical Field

The utility model relates to an engine cooling's technical field, concretely relates to cylinder cap water jacket structure of horizontal opposition engine.

Background

The cylinder cover water jacket is used for cooling areas such as an air inlet channel, an exhaust channel and a spark plug and transferring heat generated in the working process of the engine through cooling liquid. Because the cooling liquid needs to absorb heat in the process of flowing in the water jacket of the cylinder cover, bubbles can be generated in the cooling liquid under the influence of high temperature, and cavitation can be generated after the bubbles are accumulated in the water jacket, so that the normal work of the water jacket is influenced. In addition, due to the complex structure of the cylinder cover, the coolant is easy to have a flow dead zone under the influence of gravity, so that the coolant cannot exchange heat in time, and the normal work of the engine is influenced.

The utility model discloses a utility model patent that bulletin number is CN210714865U discloses an automobile engine's cooling water jacket, water jacket and cylinder cap upper water jacket under cylinder body water jacket, cylinder cap lower water jacket be located cylinder body water jacket top and communicate in the cylinder body water jacket, cylinder cap upper water jacket is located cylinder cap lower water jacket top and communicate in cylinder cap lower water jacket, be provided with circulation water inlet and circulation delivery port on the cylinder body water jacket respectively, be provided with two water jacket cotters on the cylinder body water jacket, the circulation delivery port is located between two water jacket cotters, the water jacket cotter will the cylinder body water jacket divide into water jacket inlet waters and water jacket outlet waters. The cooling liquid of the cooling water jacket flows along the horizontal direction approximately, and the cooling liquid causes the cooling liquid below the cylinder water jacket to flow slowly under the action of gravity, so that a flow dead zone is formed; the bubbles are accumulated at the top of the water jacket on the cylinder cover under the action of gravity, are not easy to discharge and are easy to cause bubble accumulation.

SUMMERY OF THE UTILITY MODEL

In order to solve the cylinder cap water jacket structure of horizontal opposition engine, because of the difficult cavitation problem that produces of the difficult discharge of bubble and coolant liquid lead to the problem that below coolant liquid flows and slowly forms the flow blind spot because of the dead weight, the utility model provides a cylinder cap water jacket structure of horizontal opposition engine, its concrete technical scheme as follows.

A cylinder cover water jacket structure of a horizontally-opposed engine comprises a cylinder cover water jacket, a water inlet area and a water outlet area, wherein the water inlet area is arranged at the bottom of the cylinder cover water jacket and is communicated with the cylinder cover water jacket, and the water outlet area is arranged at the top of the cylinder cover water jacket and is communicated with the cylinder cover water jacket; and the cooling liquid flows into the cylinder cover water jacket from the water inlet area and is discharged through the water outlet area to form a cooling water path flowing from bottom to top.

Furthermore, the water inlet area is close to the exhaust passage, the water outlet area is close to the air inlet passage, and the cooling liquid in the cylinder cover water jacket flows from the exhaust side to the air inlet side.

Furthermore, the cylinder cover water jacket comprises a first water channel positioned in the middle of the cylinder cover, and a second water channel and a third water channel which are respectively positioned on two sides of the cylinder cover; and the two sides of the exhaust passage are respectively provided with a solid partition, so that a first branch and a second branch are formed on one side of the cylinder cover water jacket close to the water inlet area, the second water path is communicated with the first water path through the first branch, and the third water path is communicated with the first water path through the second branch.

Further, the shape of the solid partition is triangular.

Furthermore, the second water channel and the third water channel are respectively provided with an inclined surface which reduces the flow cross section at one side far away from the first water channel.

Furthermore, the spark plug is located on the first water path, and partial cooling liquid in the first water path flows to the spark plug from the area where the exhaust passage is located and then respectively converges to the second water path and the third water path.

Has the advantages that: 1. the utility model discloses a cylinder cover water jacket structure of a horizontal opposed engine, which arranges a water inlet area at the bottom of the cylinder cover water jacket and a water outlet area at the top of the cylinder cover water jacket, and a cooling water path from bottom to top is formed by feeding cooling liquid from the bottom of the cylinder cover water jacket and discharging water from the top of the cylinder cover water jacket; the bubbles move from bottom to top under the influence of gravity and are discharged from the water outlet area, so that the accumulation of the bubbles in the water jacket can be effectively avoided, and the cavitation phenomenon is avoided; because the cooling liquid directly moves from the water inlet area to the water outlet area from bottom to top, the cooling liquid at the bottom is prevented from generating a flowing dead zone due to the action of gravity.

2. The utility model discloses a cylinder cap water jacket structure of horizontal opposition engine through dividing into first water route, second water route and third water route with the cylinder cap water jacket, and the homogeneity of cylinder cap water jacket temperature distribution is guaranteed to the side of admitting air from the exhaust side flow direction of engine in the flow direction in each water route.

3. The utility model discloses a cylinder cap water jacket structure of horizontal opposition engine through set up the entity on the cylinder cap water jacket and cut off, forms first branch road and second branch road, and the part coolant liquid in second water route and third water route is avoided taking place the sinuous flow by first branch road and the first water route of second branch road flow direction respectively in the exhaust passage region, further guarantees that the flow direction of the coolant liquid in the cylinder cap water jacket is for by lower supreme flow.

Drawings

Fig. 1 is a schematic structural view of a cylinder head water jacket in an embodiment of the present invention;

FIG. 2 is a front view of a cylinder head water jacket according to an embodiment of the present invention;

FIG. 3 is a side view of a cylinder head water jacket according to an embodiment of the present invention;

fig. 4 is a cross-sectional view taken along line a-a of fig. 3.

Reference numerals: 1-a water inlet area; 2-a water outlet area; 3-cylinder cover water jacket; 4-an air inlet channel; 5, an exhaust passage; 6-spark plug; 31-a first water circuit; 32-a second water circuit; 33-a third water circuit; 34-a solid partition; 35-a first branch; 36-a second branch; 37-inclined plane.

Detailed Description

In order to make those skilled in the art better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; furthermore, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, as they may be fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Examples

As shown in fig. 1 and fig. 2, the present embodiment provides a cylinder head water jacket structure of a horizontally opposed engine, including a cylinder head water jacket 3, a water inlet zone 1 and a water outlet zone 2, where the water inlet zone 1 is disposed at the bottom of the cylinder head water jacket 3 and is communicated with the cylinder head water jacket 3, and the water outlet zone 2 is disposed at the top of the cylinder head water jacket 3 and is communicated with the cylinder head water jacket 3; and the cooling liquid flows into the cylinder cover water jacket 3 from the water inlet area 1 and then is discharged through the water outlet area 2 to form a cooling water path flowing from bottom to top.

In the embodiment, the arrangement mode of the engine cylinders is a horizontal opposite mode, and the cylinder cover water jacket 3 cools areas such as an air inlet passage 4, an exhaust passage 5, a spark plug 6 and the like; the water inlet area 1 is arranged at the bottom of the cylinder cover water jacket 3, and the water outlet area 2 is arranged at the top of the cylinder cover water jacket 3, wherein the bottom of the cylinder cover water jacket 3 refers to the bottom of the cylinder cover water jacket 3 in the vertical direction, and the top of the cylinder cover water jacket 3 refers to the top of the cylinder cover water jacket 3 in the vertical direction. The cooling liquid flows into the cylinder cover water jacket 3 from the water inlet area 1, flows through the cylinder cover water jacket 3 and is discharged from the water outlet area 2, and a cooling water path from bottom to top is formed in the cylinder cover water jacket 3 by adopting a mode of bottom-in and top-out. Bubbles generated due to high temperature in the cooling liquid float upwards under the influence of gravity, and can be discharged from the water outlet area 2 along with the flowing of the cooling liquid, so that the phenomenon that the bubbles are accumulated in the cylinder cover water jacket 3 to generate cavitation is avoided.

In this embodiment, because the flow direction of the coolant in the cylinder head water jacket 3 is from bottom to top, the coolant can always keep the same direction in the flowing process of the coolant, and the coolant does not have the flow in the horizontal direction, so that the problem that the flow velocity of the coolant at the bottom is relatively slow due to the influence of gravity is avoided, and the generation of a flow dead zone is avoided.

As shown in fig. 3, in the present embodiment, the water inlet region 1 is close to the exhaust passage 5, the water outlet region 2 is close to the intake passage 4, and the coolant in the cylinder head water jacket 3 flows from the exhaust side to the intake side. Because the temperature of the exhaust passage 5 is higher than that of the air inlet passage 4, the cooling liquid flows from the exhaust side to the air inlet side, the cooling effect on the exhaust passage 5 is improved, and the uniformity of cooling the cylinder cover is ensured.

As shown in fig. 3, in the present embodiment, the cylinder head water jacket 3 includes a first water passage 31 located in the middle of the cylinder head, and a second water passage 32 and a third water passage 33 located on both sides of the cylinder head, respectively; and solid partitions 34 are respectively arranged on two sides of the exhaust passage 5, so that a first branch 35 and a second branch 36 are formed on one side of the cylinder cover water jacket 3 close to the water inlet area 1, the second water passage 32 is communicated with the first water passage 31 through the first branch 35, and the third water passage 33 is communicated with the first water passage 31 through the second branch 36.

In the embodiment, a first branch 35 and a second branch 36 are formed on one side of the cylinder head water jacket 3 close to the water inlet area 1 through a solid partition 34, so that the cooling liquid is prevented from flowing around in the region of the exhaust passage 5; the flow directions of the cooling liquid in the first water channel 31, the second water channel 32 and the third water channel 33 are from bottom to top, the cooling liquid is respectively concentrated in the first water channel 31, the second water channel 32 and the third water channel 33, the flow direction of the cooling liquid in the cylinder head water jacket 3 is further ensured to be from bottom to top, and cavitation and flow dead zones are further avoided from being generated in the cylinder head water jacket 3.

As shown in fig. 3, in the present embodiment, the spark plug 6 is located on the first water passage 31, and after a part of the coolant in the first water passage 31 flows from the region where the exhaust passage 5 is located to the region where the spark plug 6 is located, the coolant is merged to the second water passage 32 and the third water passage 33, respectively. As shown in fig. 4, the second water passage 32 and the third water passage 33 are formed with inclined surfaces 37 having a reduced flow cross section on the sides thereof away from the first water passage 31. The inclined surface 37 and the side surface of the cylinder cover form an included angle alpha, and the angle alpha is 30-60 degrees. By reducing the flow cross section of the second water passage 32 and the third water passage 33, the coolant is concentrated in the first water passage 31, and the area where the ignition plug 6 is located is cooled more favorably, and when the coolant in the first water passage 31 flows to the area where the ignition plug 6 is located, the coolant is converged in the second water passage 32 and the third water passage 33, respectively, and the periphery of the ignition plug 6 is cooled uniformly.

In the embodiment, a cylinder head water jacket structure with a lower inlet and an upper outlet is arranged, so that the cooling liquid in the cylinder head water jacket 3 forms a cooling water path flowing from bottom to top; in the flowing process of the cooling liquid, the bubbles float upwards under the action of gravity, so that the bubbles are prevented from being accumulated in the cylinder cover water jacket 3 along with the discharge of the cooling liquid, and the cavitation phenomenon is avoided. The first water passage 31, the second water passage 32, and the third water passage 33 are provided in the head water jacket 3 so as to flow from bottom to top, thereby further ensuring that the coolant in the head water jacket 3 flows from bottom to top. The solid partition 34 is arranged to prevent the cooling liquid in the region where the exhaust passage 5 is located from flowing around, and further ensure that the flow directions of the cooling liquid in the first water passage 31, the second water passage 32 and the third water passage 33 are from bottom to top. By reducing the flow cross section of the second water passage 32 and the third water passage 33, the coolant is concentrated in the first water passage 31, the cooling effect on the spark plug 6 is improved, and the uniformity of cylinder head cooling is ensured.

The foregoing is a more detailed description of the present invention, taken in conjunction with the specific preferred embodiments thereof, and it is not intended that the invention be limited to the specific embodiments shown and described. To the technical field of the utility model belongs to the prerequisite without departing from the utility model discloses the utility model, can also make a plurality of equal substitution or obvious variant, and performance or usage are the same moreover, all should regard as belonging to within the scope of protection of the utility model.

Claims

1. A cylinder cover water jacket structure of a horizontally-opposed engine comprises a cylinder cover water jacket (3), a water inlet area (1) and a water outlet area (2), and is characterized in that the water inlet area (1) is arranged at the bottom of the cylinder cover water jacket (3) and communicated with the cylinder cover water jacket (3), and the water outlet area (2) is arranged at the top of the cylinder cover water jacket (3) and communicated with the cylinder cover water jacket (3); and the cooling liquid flows into the cylinder cover water jacket (3) from the water inlet area (1) and then is discharged through the water outlet area (2) to form a cooling water path flowing from bottom to top.

2. The structure of a cylinder head water jacket of a horizontally opposed engine according to claim 1, wherein the water inlet area (1) is close to the exhaust passage (5), the water outlet area (2) is close to the intake passage (4), and the coolant in the cylinder head water jacket (3) flows from the exhaust side to the intake side.

3. The structure of the cylinder head jacket of a horizontally opposed engine according to claim 2, wherein the cylinder head jacket (3) includes a first water passage (31) in the middle of the cylinder head, and a second water passage (32) and a third water passage (33) on both sides of the cylinder head, respectively; and solid partitions (34) are respectively arranged on two sides of the exhaust passage (5), so that a first branch (35) and a second branch (36) are formed on one side of the cylinder cover water jacket (3) close to the water inlet area (1), the second water channel (32) is communicated with the first water channel (31) through the first branch (35), and the third water channel (33) is communicated with the first water channel (31) through the second branch (36).

4. A cylinder head jacket structure of a horizontally opposed engine according to claim 3, wherein the solid partition (34) is triangular in shape.

5. A cylinder head jacket structure of a horizontally opposed engine according to claim 3, wherein the sides of the second water passage (32) and the third water passage (33) away from the first water passage (31) are respectively formed with inclined surfaces (37) that reduce the flow cross section.

6. The structure of the water jacket of the cylinder head of a horizontally opposed engine according to claim 3, wherein the spark plug (6) is located on a first water path (31), and part of the cooling liquid in the first water path (31) flows from the region of the exhaust passage (5) to the region of the spark plug (6) and then is merged to a second water path (32) and a third water path (33), respectively.