CN211116292U - Engine - Google Patents

Abstract

The utility model belongs to the technical field of the engine, concretely relates to engine. The engine includes: a plurality of cylinder heads; an exhaust pipe connected to each of the cylinder heads; a drain pipe connected to each of the cylinder heads; a gasket disposed between two adjacent cylinder heads, the gasket configured to reduce movement of the two adjacent cylinder heads toward each other. According to the utility model discloses an engine sets up the gasket that prevents the cylinder head and remove between the cylinder head, and when the blast pipe was heated and takes place the thermal energy, the gasket can prevent that the blast pipe from driving two adjacent cylinder heads and take place to remove in opposite directions to guarantee that the relative position between cylinder head and the drain pipe is unchangeable, avoid the engine to leak.

Description

Engine

Technical Field

The utility model belongs to the technical field of car engine, concretely relates to engine.

Background

Along with the continuous improvement of the strengthening degree of the engine, the heat load of the cylinder cover is higher and higher, and the exhaust temperature of the engine is higher and higher, so that the temperature resistance requirement on the exhaust pipe is higher. The thermal expansion coefficient of the exhaust pipe made of the high-temperature resistant material is large, and the exhaust pipe is affected by high-temperature gas to generate corresponding thermal expansion during exhaust. The thermal expansion causes the exhaust pipe to drive the cylinder heads to move relatively, so that the gap between the two cylinder heads is reduced, and the relative installation position of the drain pipe and the cylinder heads is changed, thereby causing the water leakage of the engine.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the problem of engine water leakage at least. The purpose is realized by the following technical scheme:

the utility model provides an engine, include: a plurality of cylinder heads; an exhaust pipe connected to each of the cylinder heads; a drain pipe connected to each of the cylinder heads; a gasket disposed between two adjacent cylinder heads, the gasket configured to reduce movement of the two adjacent cylinder heads toward each other.

According to the utility model discloses engine sets up the gasket that prevents two adjacent cylinder heads and remove in opposite directions between two adjacent cylinder heads, and when the blast pipe was heated and takes place the thermal energy, the gasket can stop the blast pipe to drive two adjacent cylinder heads and take place to remove in opposite directions to guarantee that the relative position between cylinder head and the drain pipe is unchangeable, avoid the engine to leak.

In addition, according to the utility model discloses the engine, can also have following technical characterstic:

in some embodiments of the present invention, the exhaust pipe is provided with a plurality of flanges for connecting with the cylinder head, the flanges are provided with deformation compensation holes, and the deformation compensation holes are in clearance fit with bolts of the cylinder head.

In some embodiments of the present invention, the deformation compensation hole is a kidney-shaped hole.

In some embodiments of the present invention, a plurality of limiting holes are formed in one of the flanges.

In some embodiments of the present invention, the number of the limiting holes is two, and two of the limiting holes are located on two sides of the exhaust pipe.

In some embodiments of the present invention, the exhaust pipes are two, and two the exhaust pipes communicate, the cylinder heads are six, each exhaust pipe is respectively connected with three adjacent cylinder heads, and a gasket made of hard material is arranged between the adjacent cylinder heads.

In some embodiments of the present invention, a connection structure is provided between the two exhaust pipes, and the connection structure includes a clamp and an expansion joint provided on the two exhaust pipes.

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 is an isometric view of the overall structure of an engine according to an embodiment of the present invention;

FIG. 2 is a front view of the engine shown in FIG. 1;

fig. 3 is a schematic structural view of the exhaust pipe shown in fig. 1.

The reference symbols in the drawings denote the following:

10: a cylinder head;

20: exhaust pipe, 21: flange, 211: deformation compensation hole, 212: limiting hole, 22: connection structure, 221: a clamp band and 222: expansion joint, 23: a bolt;

30: a drain pipe;

40: and (7) a gasket.

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.

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 "side," "on," 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.

As shown in fig. 1 and fig. 2, an embodiment of the present invention provides an engine, including: a plurality of cylinder heads 10, an exhaust pipe 20, a drain pipe 30, and a gasket 40, the exhaust pipe 20 being connected to each cylinder head 10; a drain pipe 30 is connected to each cylinder head 10; a gasket 40 is provided between two adjacent cylinder heads 10, the gasket 40 serving to reduce the movement of the two adjacent cylinder heads 10 toward each other.

According to the utility model discloses engine sets up the gasket 40 that prevents two adjacent cylinder heads 10 and remove in opposite directions between two adjacent cylinder heads 10, and when blast pipe 20 was heated and takes place the thermal energy, gasket 40 can stop blast pipe 20 to drive two adjacent cylinder heads 10 and take place to remove in opposite directions to guarantee that the relative position between cylinder head 10 and the drain pipe 30 is unchangeable, avoid the engine to leak.

In some embodiments of the present invention, as shown in fig. 3, a plurality of flanges 21 for connecting with the cylinder head 10 are provided on the exhaust pipe 20, deformation compensation holes 211 are provided on the flanges 21, and the deformation compensation holes 211 and the connecting flanges 21 are in clearance fit with the bolts 23 of the cylinder head 10. The size of the deformation compensation hole 211 is slightly larger than that of the connection bolt 23, and when the exhaust pipe 20 thermally expands, the deformation compensation hole 211 can ensure that the exhaust pipe 20 moves relative to the cylinder head 10 to a certain extent, so as to prevent the exhaust pipe 20 from moving the cylinder head 10. When the exhaust pipe 20 is deformed by thermal expansion to a large extent and the deformation compensation hole 211 is not sized to meet the deformation requirement of the exhaust pipe 20, the exhaust pipe 20 will carry the cylinder head 10 and the gasket 40 will prevent the cylinder head 10 from moving. The deformation compensation holes 211 and the gasket 40 work together to prevent the cylinder head 10 from being displaced, so that the connection between the cylinder head 10 and the drain pipe 30 is ensured with stability.

In some embodiments of the present invention, the deformation compensation hole 211 is a waist-shaped hole, and the long side of the waist-shaped hole is parallel to the long side of the engine, so that the exhaust pipe 20 is moved by thermal expansion along the long side of the engine, and the exhaust pipe 20 is prevented from deforming in the vertical direction, so that the cylinder head 10 is displaced in the vertical direction, thereby destroying the sealing performance of the cylinder head 10.

In some embodiments of the present invention, a limiting hole 212 is formed in one of the flanges 21 of the plurality of flanges 21, the limiting hole 212 is a circular hole, the size of the circular hole is matched with the size of the bolt 23, and the limiting hole 212 is used for limiting the position of the exhaust pipe 20.

The utility model discloses an in some embodiments, be equipped with three connecting hole altogether on the flange 21, spacing hole 212 is two, sets up two spacing holes 212 in the both sides of blast pipe 20, and the location of blast pipe 20 can be guaranteed to the spacing hole 212 of both sides more accurately.

In some embodiments of the present invention, the number of the exhaust pipes 20 is two, and the two exhaust pipes 20 are communicated, the number of the cylinder heads 10 is six, each exhaust pipe 20 is connected to three adjacent cylinder heads 10, wherein the limiting hole 212 is opened on the flange 21 of each exhaust pipe 20 located at the middle position, so that the two ends of the exhaust pipe 20 can have a certain deformation. Further, the number of the cylinder heads 10 may be 4, 8, 10, 12 or more, the number of the exhaust pipes 20 may be changed according to the number of the cylinder heads 10, and 2, 4, 5 or more cylinder heads 10 may be connected to the exhaust pipe 20, and the number of the cylinder heads 10, the exhaust pipes 20 and the flanges 21 may be designed according to the need. The position limiting hole 212 is generally provided on the flange 21 of each exhaust pipe 20 at the middle position, and the position of the position limiting hole 212 may be changed as required.

Further, a gasket 40 made of a hard material (e.g., a steel plate) having a certain rigidity is provided between the adjacent cylinder heads 10, and the gasket 40 caused by the thermal expansion of the exhaust pipe 20 receives a force of the cylinder heads 10, which does not deform the gasket 40.

In other embodiments of the present invention, the adjacent three cylinder heads 10 are considered as a group, the gasket 40 is only disposed in the middle of the two adjacent three cylinder heads 10, and the gasket 40 is used for preventing the two adjacent three cylinder heads 10 from moving towards each other.

In some embodiments of the present invention, a connection structure 22 is disposed between the two exhaust pipes 20, the connection structure 22 includes a clamp 221 and an expansion joint 222, wherein one end of the expansion joint 222 is connected to one of the exhaust pipes 20, and the other end of the expansion joint 222 is connected to the other exhaust pipe 20 through the clamp 221.

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. An engine, comprising:

a plurality of cylinder heads;

an exhaust pipe connected to each of the cylinder heads;

a drain pipe connected to each of the cylinder heads;

a gasket disposed between two adjacent cylinder heads, the gasket configured to reduce movement of the two adjacent cylinder heads toward each other.

2. The engine according to claim 1, wherein a plurality of flanges for connection with the cylinder head are provided on the exhaust pipe, and deformation compensation holes are provided in the flanges in clearance fit with bolts connecting the flanges and the cylinder head.

3. The engine of claim 2, wherein the deformation compensating holes are kidney shaped holes.

4. The engine of claim 2, wherein a retainer hole is formed in one of said flanges.

5. The engine according to claim 4, wherein the two limiting holes are located on both sides of the exhaust pipe.

6. The engine according to any one of claims 1 to 5, wherein the number of the exhaust pipes is two, and the two exhaust pipes communicate, and the number of the cylinder heads is six, and each exhaust pipe is connected to three adjacent cylinder heads, respectively, with a gasket made of a hard material interposed therebetween.

7. The engine of claim 6, wherein a connection structure is provided between the two exhaust pipes, the connection structure including a clamp and an expansion joint provided on the two exhaust pipes.

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