CN211819673U - Cylinder block and engine with same - Google Patents

Abstract

The utility model belongs to the technical field of the engine, concretely relates to cylinder block and have its engine. The utility model provides an inside of cylinder block is equipped with the edge the annular water cavity that the axis direction of cylinder block set up, and follows the axial direction of cylinder block annular water cavity with the wall thickness inequality that forms between the internal face of cylinder block. Through using the cylinder block among this technical scheme, design the wall thickness between the internal face of cylinder block and the annular water cavity for unequal structure, can reach the deformation requirement in cylinder hole under the hot state, guaranteed the cylindricity in cylinder hole, can avoid the problem of gas leakage because the unusual wearing and tearing problem of cylinder liner piston ring leads to simultaneously.

Description

Cylinder block and engine with same

Technical Field

The utility model belongs to the technical field of the engine, concretely relates to cylinder block and have its engine.

Background

At present, the engine body mainly comprises a cylinder liner-free design, a wet cylinder liner and a dry cylinder liner. For dry cylinder liners and cylinder liner-free engine blocks, in order to enhance heat transfer as much as possible, the wall thickness of the cylinder liner is thinner and thinner, and the wall thickness of the engine block is designed to be smaller correspondingly. With such a liner, in the case of an offset interference fit with the cylinder bore, although heat transfer is facilitated, the liner is susceptible to compression deformation due to too thin wall thickness, resulting in "out of roundness" of the inner bore (this problem also exists with no liner body). If the piston ring can not adapt to the deformation of the cylinder hole in the reciprocating motion process, local abrasion is easy to generate, and serious consequences are caused.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the problem of cylinder hole deformation of the cylinder body in the prior art at least. The purpose is realized by the following technical scheme:

the utility model discloses a first aspect provides a cylinder block, the inside of cylinder block is equipped with the edge the annular water cavity that the axis direction of cylinder block set up, and follows the axial direction of cylinder block annular water cavity with the wall thickness inequality that forms between the internal face of cylinder block.

Through using the cylinder block among this technical scheme, design the wall thickness between the internal face of cylinder block and the annular water cavity for unequal structure, can reach the deformation requirement in cylinder hole under the hot state, guaranteed the cylindricity in cylinder hole, can avoid the problem of gas leakage because the unusual wearing and tearing problem of cylinder liner piston ring leads to simultaneously.

In addition, according to the present invention, the cylinder block may further have the following additional technical features:

in some embodiments of the present invention, the annular water cavity is far away from the first cavity surface of the inner wall surface and is parallel to the inner wall surface, and the annular water cavity is close to the second cavity surface of the inner wall surface and is arranged at an angle to the inner wall surface.

In some embodiments of the present invention, the wall thickness between the second cavity surface and the inner wall surface decreases in order along a direction of the top end of the annular water cavity toward the bottom end.

In some embodiments of the present invention, a wall thickness between the bottom end of the second facet and the inner wall surface is 0.7-0.8 times a wall thickness between the top end of the second facet and the inner wall surface.

In some embodiments of the present invention, the cylinder block is manufactured by a casting process.

In some embodiments of the present invention, the annular water chamber is coaxial with the inner wall surface.

The present invention also provides an engine including the cylinder block according to the above embodiment.

Drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like parts are designated by like reference numerals throughout the drawings. In the drawings:

fig. 1 schematically shows an overall structural sectional view of a cylinder block according to an embodiment of the present invention.

1: a cylinder block;

10: annular water cavity, 11: first cavity surface, 12: a second cavity surface;

20: an inner wall surface.

Detailed Description

Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

It is to be understood that the terminology used herein is for the purpose of describing particular example embodiments only, and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" may be intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises," "comprising," "including," and "having" are inclusive and therefore specify the presence of stated features, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and/or groups thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring their performance in the particular order described or illustrated, unless specifically identified as an order of performance. It should also be understood that additional or alternative steps may be used.

Although the terms first, second, third, etc. may be used herein to describe various elements, components, regions, layers and/or sections, these elements, components, regions, layers and/or sections should not be limited by these terms. These terms may be only used to distinguish one element, component, region, layer or section from another region, layer or section. Terms such as "first," "second," and other numerical terms when used herein do not imply a sequence or order unless clearly indicated by the context. Thus, a first element, component, region, layer or section discussed below could be termed a second element, component, region, layer or section without departing from the teachings of the example embodiments.

For convenience of description, spatially relative terms, such as "inner", "outer", "lower", "below", "upper", "above", and the like, may be used herein to describe one element or feature's relationship to another element or feature as illustrated in the figures. Such spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" or "over" the other elements or features. Thus, the example term "below … …" can include both an orientation of above and below. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

Fig. 1 schematically shows an overall structural sectional view of a cylinder block according to an embodiment of the present invention. As shown in fig. 1, the utility model provides a cylinder block and have its engine. The utility model provides an inside of cylinder block 1 is equipped with the annular water cavity 10 that sets up along the axis direction of cylinder block 1, and the wall thickness inequality that forms between the annular water cavity 10 of the axial direction of cylinder block 1 and the internal face 20 of cylinder block 1.

Through using cylinder block 1 among this technical scheme, with the wall thickness design between the internal face 20 of cylinder block 1 and annular water cavity 10 for unequal structure, can reach the deformation requirement of cylinder hole under the hot state, guaranteed the cylindricity in cylinder hole, can avoid the problem of gas leakage because the unusual wear problem of cylinder liner piston ring leads to simultaneously.

Further, in the present embodiment, the first cavity surface 11 of the annular water cavity 10 away from the inner wall surface 20 is parallel to the inner wall surface 20, and the second cavity surface 12 of the annular water cavity 10 close to the inner wall surface 20 is disposed at an angle to the inner wall surface 20. In the embodiment, the second cavity surface 12 of the annular water cavity 10 close to the inner wall surface 20 is in a downward conical shape and forms a certain angle with the inner wall surface 20, so that the wall thickness between the annular water cavity 10 and the inner wall surface 20 is gradually decreased from the upper end to the lower end, and the structure can counteract part of deformation of the cylinder hole under the thermal state condition, so that the cylinder hole keeps the original shape.

Specifically, in the present embodiment, the wall thickness between the second cavity surface 12 and the inner wall surface 20 decreases in the direction from the top end to the bottom end of the annular water cavity 10. According to the simulation result under the thermal state, the requirement of cylinder hole deformation under the thermal state can be met, the cylindricity of the cylinder hole is ensured, the occurrence of the out-of-round condition of the cylinder hole can be avoided, and the problems of high machine consumption, large air leakage and the like caused by the abnormal abrasion problem of a cylinder sleeve piston ring are avoided.

Specifically, in the present embodiment, the thickness of the wall between the bottom end of the second cavity 12 and the inner wall surface 20 is 0.7-0.8 times the thickness of the wall between the top end of the second cavity 12 and the inner wall surface 20. In the embodiment, the cylinder sleeve generally deforms on one side by about 0.02-0.03mm, and the wall thickness value between the annular water cavity 10 and the inner wall surface 20 can be changed correspondingly according to the molded lines of the data.

Specifically, in the present embodiment, the cylinder block 1 is manufactured by a casting process.

Further, in this embodiment, the annular water cavity 10 is disposed coaxially with the inner wall surface 20, so that the annular water cavity 10 is symmetrical along the circumferential direction of the axis of the cylinder block 1, and thus the cooling process is more uniform.

The utility model also provides an engine, cylinder block including above.

Through using the engine among this technical scheme, the wall thickness design of cylinder block on the engine between with the internal face of cylinder block and the annular water cavity is inequality structure, can reach the deformation requirement of cylinder hole under the hot state, has guaranteed the cylindricity in cylinder hole, can avoid the problem of gas leakage because the unusual wear problem of cylinder liner piston ring leads to simultaneously.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (7)

1. A cylinder block is characterized in that an annular water cavity is arranged in the cylinder block along the axis direction of the cylinder block, and the wall thickness formed between the annular water cavity and the inner wall surface of the cylinder block along the axial direction of the cylinder block is unequal.

2. The cylinder block of claim 1, wherein a first cavity surface of the annular water cavity remote from the inner wall surface is parallel to the inner wall surface, and a second cavity surface of the annular water cavity close to the inner wall surface is disposed at an angle to the inner wall surface.

3. The cylinder block of claim 2, wherein the wall thickness between the second cavity surface and the inner wall surface decreases in the direction from the top end to the bottom end of the annular water cavity.

4. The cylinder block according to claim 3, wherein a wall thickness between a bottom end of the second cavity surface and the inner wall surface is 0.7 to 0.8 times a wall thickness between a top end of the second cavity surface and the inner wall surface.

5. The cylinder block of claim 1, wherein the cylinder block is manufactured by a casting process.

6. The cylinder block of claim 1, wherein the annular water cavity is disposed coaxially with the inner wall surface.

7. An engine characterized by having the cylinder block according to any one of claims 1 to 6.

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