CN216788555U

CN216788555U - Cylinder body structure, water-cooled engine and motorcycle

Info

Publication number: CN216788555U
Application number: CN202220240709.9U
Authority: CN
Inventors: 魏小勇; 林健明
Original assignee: Jiangmen Dachangjiang Group Co Ltd
Current assignee: Jiangmen Dachangjiang Group Co Ltd
Priority date: 2022-01-28
Filing date: 2022-01-28
Publication date: 2022-06-21
Anticipated expiration: 2032-01-28

Abstract

The utility model discloses a cylinder body structure, a water-cooled engine and a motorcycle, wherein the cylinder body structure comprises a cylinder body and a sleeve, the sleeve is arranged in the cylinder body, and the outer wall of the sleeve and the inner wall of the cylinder body are arranged at intervals to form a cooling cavity; the cylinder body is also provided with a water inlet hole and a first expansion groove, the water inlet hole is arranged through the cylinder body and communicated with the cooling cavity, the first expansion groove is formed in the inner wall of the cylinder body, the first expansion groove is arranged adjacent to the water inlet hole, and the expansion area of the first expansion groove is overlapped with the area, facing the cooling cavity, of the water inlet hole; the water-cooled engine and the motorcycle both comprise the cylinder body structure. Because the extension region of first extension groove has the coincidence with the regional of the orientation cooling chamber of inlet opening, the terminal hole region of the orientation cooling chamber of inlet opening does not need processing, compares traditional structure, has shortened the depth of processing of inlet opening to can not lead to forming the recess on telescopic outer wall and producing reverse boss at the end of inlet opening because of processing too deeply.

Description

Cylinder body structure, water-cooled engine and motorcycle

Technical Field

The utility model relates to the technical field of water-cooled engines, in particular to a cylinder body structure, a water-cooled engine and a motorcycle.

Background

Engines are classified into air-cooled engines and water-cooled engines according to the difference of cooling media. The water-cooled engine is an engine using water as a cooling medium. The cylinder body structure of the water-cooled engine comprises a cylinder body and a cylinder sleeve, wherein the cylinder sleeve is embedded in the cylinder body, the cylinder body is provided with a cooling cavity, and the cooling cavity is arranged around the periphery of the cylinder sleeve to form a commonly-known water jacket structure. The inlet opening has been seted up to the jar body, inlet opening and cooling chamber intercommunication, and the during operation carries cooling water through the inlet opening towards the cooling chamber in, and the cooling water is at the cooling intracavity circulation flow to the realization is to the cooling of cylinder liner.

However, in traditional cylinder body structure, the wall that can lead to the jar body of seting up of inlet opening produces recess and reverse boss, and the existence of recess can destroy the original casting stress of jar body, and reverse boss is that the bottom outlet does not link up and leads to completely, and it can influence the entering flow direction of cooling water, increases water resistance, increases cooling system's load.

SUMMERY OF THE UTILITY MODEL

In view of this, it is necessary to provide a cylinder block structure, a water-cooled engine, and a motorcycle; the cylinder body structure ensures that the arrangement of the water inlet hole does not influence the wall surface of the cylinder body, so as to avoid the problems of generating grooves, reverse bosses and the like, ensure the normal flow direction of cooling water, reduce the entry resistance of the cooling water and reduce the load of a cooling system; the water-cooled engine comprises the cylinder body structure, so that the normal flow direction of cooling water can be ensured, the entering resistance of the cooling water is reduced, the load of a cooling system is reduced, and the cooling performance is ensured; the motorcycle adopts the water-cooled engine, so that the cooling performance of the water-cooled engine is ensured, and the normal performance of the motorcycle is ensured.

The technical scheme is as follows:

one embodiment provides a cylinder structure including:

the cylinder comprises a cylinder body and a sleeve, wherein the sleeve is arranged in the cylinder body and is provided with an inner cavity extending along the length direction of the cylinder body, the inner cavity is used for mounting a cylinder sleeve, and the outer wall of the sleeve and the inner wall of the cylinder body are arranged at intervals to form a cooling cavity;

the cylinder body still is equipped with inlet opening and first extension groove, the inlet opening link up the setting of cylinder body and with the cooling chamber communicates with each other, first extension groove is seted up on the inner wall of cylinder body, first extension groove with the inlet opening is adjacent to be set up, just the extension region of first extension groove with the orientation of inlet opening the region of cooling chamber has the coincidence.

In the cylinder body structure, the inner cavity of the sleeve is used for being matched with the cylinder sleeve, and the sleeve is matched with the cylinder body to form a water jacket structure; because the extension region of first extension groove has the coincidence with the region of the orientation cooling chamber of inlet opening, the terminal hole region of the orientation cooling chamber of inlet opening does not need processing, compares traditional structure, has shortened the depth of processing of inlet opening to can not lead to forming the recess and producing reverse boss at the end of inlet opening on telescopic outer wall because of processing too deeply, guaranteed the normal flow direction of cooling water, reduced the entering resistance of cooling water, reduced cooling system's load.

The technical solution is further explained below:

in one embodiment, the groove wall of the first expansion groove has a first profile surface, at least part of the first profile surface is a first plane, and the hole axis of the water inlet hole is parallel to the first plane.

In one embodiment, the cylinder body is further provided with a second expansion groove, the second expansion groove is formed in the inner wall of the cylinder body, the second expansion groove is adjacent to the first expansion groove, an expansion area of the second expansion groove and an expansion area of the first expansion groove are provided with an overlapping area, and an outlet of the water inlet hole is located in the overlapping area.

In one embodiment, a groove wall of the second expansion groove has a second profile surface, at least a portion of the second profile surface is a second plane, and the second plane is disposed at an obtuse angle with respect to the first plane.

In one embodiment, the depth of the first expansion groove in the length direction of the cylinder body is the same as the depth of the cooling cavity in the length direction of the cylinder body;

or/and the depth of the second expansion groove in the length direction of the cylinder body is the same as the depth of the cooling cavity in the length direction of the cylinder body.

In one embodiment, the cylinder structure further comprises a cylinder sleeve, and the cylinder sleeve is sleeved in the sleeve through the inner cavity; the water inlet is arranged on the exhaust side of the cylinder body.

In one embodiment, the cylinder body is provided integrally with the sleeve; the inner cavity is communicated with the cylinder body, and the cooling cavity is not communicated with the cylinder body.

In one embodiment, the cooling cavity is a circular cavity, and at least a portion of the groove wall of the first expansion groove is located on a tangent of the circular cavity.

Another embodiment provides a water-cooled engine, which comprises the cylinder block structure according to any one of the above technical solutions.

Above-mentioned water-cooled engine, adopt aforementioned cylinder body structure, because the extension region of first extension groove has the coincidence with the region of the orientation cooling chamber of inlet opening, the terminal hole region of the orientation cooling chamber of inlet opening does not need processing, compare traditional structure, the depth of processing of inlet opening has been shortened, thereby can not lead to forming the recess and producing reverse boss at the end of inlet opening on telescopic outer wall because of processing too deeply, the normal flow direction of cooling water has been guaranteed, the entering resistance of cooling water has been reduced, cooling system's load has been reduced, the performance of engine has been ensured.

Still another embodiment provides a motorcycle including the water-cooled engine according to the above technical solution.

The motorcycle adopts the water-cooled engine, so that the performance of the motorcycle is normally exerted.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the utility model and, together with the description, serve to explain the utility model and not to limit the utility model.

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Furthermore, the drawings are not drawn to a 1:1 scale, and the relative sizes of the various elements in the drawings are drawn only by way of example, and not necessarily to true scale.

FIG. 1 is an overall plan view of a cylinder structure in an embodiment of the present invention;

FIG. 2 is a sectional view of the cylinder block structure in the embodiment of FIG. 1;

FIG. 3 is a schematic illustration of the positions of the first expansion slot, the second expansion slot, the water inlet hole and the cooling chamber in the embodiment of FIG. 1;

FIG. 4 is a schematic diagram of the structure of the water inlet and the cooling chamber in a conventional structure;

fig. 5 is a schematic view showing the groove and the reverse boss formed due to the opening of the water inlet hole in the embodiment of fig. 4.

Reference is made to the accompanying drawings in which:

101. an inner cavity; 102. a cooling chamber; 110. a cylinder body; 1111. a first expansion slot; 1112. a first profile surface; 1121. a second expansion slot; 1122. a second profile surface; 113. a water inlet end; 1131. a water inlet hole; 114. a chain cavity; 120. a sleeve; 131. a groove; 132. a reverse boss; 200. a cylinder liner; 300. and (4) a water inlet pipe.

Detailed Description

Embodiments of the present invention are described in detail below with reference to the accompanying drawings:

in order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

Referring to fig. 1 to 3, an embodiment provides a cylinder block structure, including a cylinder body 110 and a sleeve 120, where the sleeve 120 is disposed in the cylinder body 110, the sleeve 120 has an inner cavity 101 extending along a length direction of the cylinder body 110, the inner cavity 101 is used for installing a cylinder liner 200, and an outer wall of the sleeve 120 and an inner wall of the cylinder body 110 are disposed at an interval to form a cooling cavity 102.

As shown in fig. 2 and 3, the cylinder body 110 is further provided with a water inlet hole 1131 and a first extension groove 1111, the water inlet hole 1131 is disposed through the cylinder body 110 and communicates with the cooling chamber 102, the first extension groove 1111 is opened on the inner wall of the cylinder body 110, the first extension groove 1111 is disposed adjacent to the water inlet hole 1131, and an extension area of the first extension groove 1111 overlaps with an area of the water inlet hole 1131 facing the cooling chamber 102.

In the cylinder body structure, the inner cavity 101 of the sleeve 120 is used for being matched with the cylinder sleeve 200, and the sleeve 120 and the cylinder body 110 are matched to form a water jacket structure; because the extension area of the first extension groove 1111 overlaps with the area of the water inlet hole 1131 facing the cooling cavity 102, the end hole area of the water inlet hole 1131 facing the cooling cavity 102 does not need to be processed, compared with the traditional structure, the processing depth of the water inlet hole 1131 is shortened, and therefore the groove 131 formed on the outer wall of the sleeve 120 and the reverse boss 132 generated at the end of the water inlet hole 1131 due to too deep processing are avoided, the normal flow direction of cooling water is ensured, the entering resistance of the cooling water is reduced, and the load of the cooling system is reduced.

As shown in fig. 4 and 5, a conventional cylinder structure can be seen: when the inlet 1131 is opened, the groove 131 is formed on the outer wall of the sleeve 120, the casting stress of the cylinder structure is reduced by the groove 131, and the reverse boss 132 is formed due to the opening of the inlet 1131, so that a series of problems such as large water inlet resistance and influence on the flow direction of cooling water are caused.

In the embodiment shown in fig. 2 and 3, the inner wall of the cylinder body 110 is provided with the first extension groove 1111, and the first extension groove 1111 removes the solid corresponding to the portion of the water inlet 1131 facing the cooling cavity 102, which is formed by opening the water inlet 1131, so that the water inlet 1131 is formed deeper without opening the water inlet 1131, which is equivalent to shortening the opening depth of the water inlet 1131, and the formation of the groove 131 and the reverse boss 132 due to the opening of the water inlet is avoided, and the water inlet 1131 can be completely penetrated without the reverse boss 132 when being opened, and the water inlet 1131 obtained by processing can also meet the requirement of water inlet.

It can be understood that:

the first extension groove 1111 may be formed directly during the casting of the cylinder body 110, and may be integrally manufactured without being opened at a later time.

In one embodiment, the water inlet hole 1131 opens on the exhaust side of the cylinder body 110.

As can be seen from fig. 2 and 3, due to the existence of the first extension groove 1111, the space of the cooling cavity 102 corresponding to the first extension groove 1111 is larger, so that more cooling water can be collected, a better cooling effect on the exhaust side can be achieved, and the problem of cylinder deformation caused by uneven cooling of different areas of the cylinder body 110 can be avoided.

In one embodiment, referring to fig. 1 to 3, the cylinder body 110 has a water inlet end 113, the water inlet hole 1131 is formed on the water inlet end 113, and the water inlet hole 1131 is a circular hole.

Optionally, the water inlet end 113 is further provided with a water inlet pipe 300, and the water inlet pipe 300 is sleeved in the water inlet end 113 through the water inlet hole 1131.

It can be understood that:

the cylinder body 110 must also have a water outlet hole, which is communicated with the cooling chamber 102, and will not be described again.

In one embodiment, as shown in fig. 1 and 2, the cylinder body 110 further opens a chain cavity 114, the chain cavity 114 is located at a side of the cooling cavity 102, and a space is provided between the chain cavity 114 and the cooling cavity 102.

In one embodiment, referring to fig. 1, the groove wall of the first expanding groove 1111 has a first profile surface 1112, at least a portion of the first profile surface 1112 is a first plane, and the hole axis of the water inlet hole 1131 is parallel to the first plane.

In one embodiment, referring to fig. 2 and 3, the cylinder body 110 is further provided with a second expansion slot 1121, the second expansion slot 1121 is opened on an inner wall of the cylinder body 110, the second expansion slot 1121 is disposed adjacent to the first expansion slot 1111, an expansion region of the second expansion slot 1121 and an expansion region of the first expansion slot 1111 have an overlapping region, and an outlet of the water inlet hole 1131 is located in the overlapping region.

In one embodiment, referring to fig. 1 to fig. 3, a groove wall of the second expansion groove 1121 has a second profile surface 1122, at least a portion of the second profile surface 1122 is a second plane, and the second plane and the first plane form an obtuse angle.

In the embodiment shown in fig. 2 and 3, the groove surface (i.e., the first profile surface 1112) of the first expansion groove 1111 and the groove surface (i.e., the second profile surface 1122) of the second expansion groove 1121 are planar and arranged at an obtuse angle. The first plane of the first extension tank 1111 can perform a function of guiding the cooling water introduced.

In one embodiment, referring to fig. 1 to 3, the depth of the first extension groove 1111 in the length direction of the cylinder body 110 is the same as the depth of the cooling chamber 102 in the length direction of the cylinder body 110.

In one embodiment, referring to fig. 1 to 3, a depth of the second expansion groove 1121 in the length direction of the cylinder body 110 is the same as a depth of the cooling cavity 102 in the length direction of the cylinder body 110.

As shown in the embodiment of fig. 1 to 3, the expanded region of the first expanded groove 1111 and the expanded region of the second expanded groove 1121 form a large space region corresponding to the opening of the water inlet hole 1131 to receive more water, which can provide better cooling effect when the water inlet hole 1131 is opened at the air intake side.

With reference to fig. 1 to 3, it can be understood in general that: the depth of the first expansion groove 1111 in the longitudinal direction of the cylinder body 110, the depth of the second expansion groove 1121 in the longitudinal direction of the cylinder body 110, and the depth of the cooling chamber 102 in the longitudinal direction of the cylinder body 110 are all equal.

It should be noted that:

taking the view shown in fig. 2 as an example, the longitudinal direction of the cylinder body 110 is a direction perpendicular to the view plane.

Alternatively, the first extension groove 1111 and the second extension groove 1121 may be directly formed at the time of casting the cylinder body 110 without being opened later, and thus, will not be described again.

In one embodiment, referring to fig. 2, the cylinder structure further includes a cylinder sleeve 200, and the cylinder sleeve 200 is sleeved in the sleeve 120 through the inner cavity 101; the inlet 1131 is opened on the exhaust side of the cylinder body 110.

Cooling water is circulated within the cooling cavity 102 to cool the cylinder liner 200 via the sleeve 120.

In one embodiment, the cylinder body 110 is integrally provided with the sleeve 120; the inner cavity 101 is provided to penetrate the cylinder body 110, and the cooling cavity 102 is not provided to penetrate the cylinder body 110.

In one embodiment, referring to fig. 1 to 3, the cooling cavity 102 is a circular cavity, and at least a portion of the groove wall of the first expansion groove 1111 is located on a tangent line of the circular cavity.

The arrangement is such that the groove wall (or the first profile surface 1112) of the first expansion groove 1111 serves as a flow guide for the incoming cooling water.

Another embodiment provides a water-cooled engine including a block structure as described in any one of the above embodiments.

This water-cooled engine adopts aforementioned cylinder block structure, because the extension region of first extension groove 1111 has the coincidence with the region of inlet opening 1131 towards cooling chamber 102, the terminal hole region of inlet opening 1131 towards cooling chamber 102 need not process, compare traditional structure, the depth of processing of inlet opening 1131 has been shortened, thereby can not lead to forming recess 131 and producing reverse boss 132 at the end of inlet opening 1131 on the outer wall of sleeve 120 because of processing too deeply, the normal flow direction of cooling water has been guaranteed, the entry resistance of cooling water has been reduced, cooling system's load has been reduced, the performance of engine has been guaranteed.

Yet another embodiment provides a motorcycle including the water-cooled engine as described in the previous embodiment.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the utility model and to simplify the description, but are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and are not to be construed as limiting the utility model.

Furthermore, the terms "first", "second" and "first" 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" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be interconnected within two elements or in a relationship where two elements interact with each other unless otherwise specifically limited. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the utility model. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. A cylinder block structure, comprising:

2. The cylinder structure of claim 1, wherein a wall of the first extension groove has a first profile surface, at least a portion of the first profile surface being a first plane, and a hole axis of the water inlet hole is parallel to the first plane.

3. The cylinder structure according to claim 2, wherein the cylinder body is further provided with a second expansion groove, the second expansion groove is formed in the inner wall of the cylinder body, the second expansion groove is provided adjacent to the first expansion groove, an expansion area of the second expansion groove and an expansion area of the first expansion groove have a coincidence area, and an outlet of the water inlet hole is located in the coincidence area.

4. The cylinder structure of claim 3, wherein the groove wall of the second expansion groove has a second contour surface, at least a portion of the second contour surface is a second plane, and the second plane is disposed at an obtuse angle to the first plane.

5. The cylinder block structure according to claim 4, wherein a depth of the first expansion groove in a length direction of the cylinder body is the same as a depth of the cooling cavity in the length direction of the cylinder body;

6. The cylinder structure according to any one of claims 1 to 5, further comprising a cylinder liner, the cylinder liner being fitted within the sleeve through the inner cavity; the water inlet is arranged on the exhaust side of the cylinder body.

7. The cylinder structure according to claim 6, wherein the cylinder body is provided integrally with the sleeve; the inner cavity is communicated with the cylinder body, and the cooling cavity is not communicated with the cylinder body.

8. The cylinder structure of claim 7, wherein the cooling cavity is a circular cavity, and at least a portion of the groove wall of the first expansion groove is located on a tangent of the circular cavity.

9. A water-cooled engine, characterized by comprising a block structure according to any one of claims 1 to 8.

10. A motorcycle characterized by comprising the water-cooled engine according to claim 9.