CN212130630U

CN212130630U - Engine sealing structure and automobile

Info

Publication number: CN212130630U
Application number: CN202020178530.6U
Authority: CN
Inventors: 孟庆宇; 刘玉铭; 张勇刚; 刘�东
Original assignee: Zhejiang Geely Holding Group Co Ltd; Yiwu Geely Powertrain Co Ltd
Current assignee: Zhejiang Geely Holding Group Co Ltd; Yiwu Geely Powertrain Co Ltd
Priority date: 2020-02-18
Filing date: 2020-02-18
Publication date: 2020-12-11
Anticipated expiration: 2030-02-18

Abstract

The utility model provides an engine sealing structure, which comprises an engine cylinder cover, an engine cylinder body, a timing cover cap, a sealing gasket and a sealing component, wherein a first gap is formed between the engine cylinder cover and the engine cylinder body, and a second gap is formed between the timing cover cap and the engine cylinder cover and between the timing cover cap and the engine cylinder body; the first gap comprises a first part and a second part which are communicated, the second part is internally provided with a sealing gasket, the sealing component comprises a first sealing component and a second sealing component, the first sealing component and the second sealing component are connected into a whole, the first sealing component is used for filling the first part, and the second sealing component is used for filling the second gap; the utility model provides an engine sealing structure, which reduces the assembly difficulty of the sealing gasket; the first sealing part and the second sealing part can be connected into a whole, so that the sealing integrity effect is realized; in addition, the first sealing member can accommodate changes in volume of the gasket that occur when the gasket is subjected to ambient temperature.

Description

Engine sealing structure and automobile

Technical Field

The utility model relates to an engine technical field, in particular to engine seal structure and car.

Background

The engine sealing performance is one of important indexes for evaluating the engine performance, and the quality of the engine sealing performance has important influence on the dynamic performance, the economical efficiency, the fatigue durability and the like of the engine. Poor engine sealing can not only cause fuel leakage and pollute the environment, but also can even cause traffic safety accidents. In the prior art, a timing cover is generally assembled on the front end face of an engine cylinder, a closed space is formed between the timing cover and the front end face of an engine cylinder body, a timing belt, a belt pulley, a tension pulley and other components in an engine transmission device are closed, and other parts are isolated from a timing system to prevent the timing system from being polluted by oil, water, mud and other impurities; in addition, the timing cover is widely applied to engines because the timing cover seals the front end of the cylinder block, prevents other foreign matters from impacting and plays a positive role in reducing the noise of the engines.

However, the connection among the cylinder head, the cylinder block and the timing cover of the engine is a T-shaped connection, and sealing rubber gaskets are mostly adopted for sealing three T-shaped joint surfaces. Therefore, if the sealing rubber gasket is not well assembled, the sealing effect of the T-shaped three-joint surface can be reduced, so that the risk of oil leakage is caused, and the safety and the service life of the engine are seriously influenced. In addition, the sealing gasket assembled at the three joint surfaces can expand with heat and contract with cold under the influence of temperature, gaps are generated at the T-shaped three joint surfaces, so that the three joint surfaces are not filled in a real state, the assembly efficiency and the assembly quality of the engine are influenced, and the use experience of customers is influenced.

To overcome the above defects in the prior art, the present application is directed to providing an engine sealing structure capable of improving engine sealing performance.

SUMMERY OF THE UTILITY MODEL

In view of the above problems in the prior art, an object of the present invention is to provide an engine sealing structure, which includes an engine cylinder, an engine cylinder cover, a timing cover, a sealing gasket, and a sealing member, wherein a first gap is formed between the engine cylinder and the engine cylinder cover, and a second gap is formed between the timing cover and the engine cylinder cover;

the first gap comprises a first part and a second part which are communicated, the first part is arranged on one side of the second part close to the second gap, a sealing gasket is arranged in the second part and matched with the second part, the sealing component comprises a first sealing component and a second sealing component, the first sealing component and the second sealing component are connected into a whole, the first sealing component is used for filling the first part, and the second sealing component is used for filling the second gap.

Further, the engine cylinder cover is provided with a first groove, the engine cylinder body is provided with a second groove, the first groove is matched with the second groove, the first groove and the second groove are matched to form the first gap, and the first gap and the second gap are distributed in a T shape.

Preferably, the length of the first portion is greater than the width of the first gap.

Preferably, a gap is formed at one end, close to the second gap, of the sealing gasket, the gap is communicated with the first portion, the gap is used for filling the sealing component, and the sealing component filled in the gap is connected with the first sealing component at the first portion into a whole.

Further, the size of the gap is smaller than the width of the sealing gasket, and the diameter of the gap is smaller than the thickness of the sealing gasket.

Further, the notch is hemispherical.

Specifically, the sealing gasket is provided with an assembly hole, the assembly hole can enable an assembly part to pass through, and the assembly part is used for passing through the assembly hole to connect the engine cylinder cover and the engine cylinder body.

Preferably, the sealing member is a sealant.

Preferably, the oil pan is further included, a third gap is formed between the oil pan and the engine cylinder block, and the third gap and the second gap are distributed in a T shape.

The utility model discloses another aspect protects an automobile, including above-mentioned technical scheme an engine seal structure.

Because of the technical scheme, the utility model discloses following beneficial effect has:

1) the utility model provides a pair of engine seal structure, the assembly when sealed the pad, need not to incite somebody to action sealed pad front end with the preceding terminal surface of engine cylinder lid and the preceding terminal surface of engine cylinder body is aimed at, has consequently reduced the sealed assembly degree of difficulty that fills up.

2) The utility model provides a pair of engine sealing structure first part department fill have with the same seal part of second clearance department, again in the assembly during the timing shroud will first seal part and second seal part compress tightly, can with first seal part with second seal part is even as an organic whole, realizes sealed wholeness effect.

3) The utility model provides a pair of engine seal structure, the first seal part of first clearance department can adapt to the change of the sealed volume that takes place when receiving the influence of external environment temperature of pad, improves sealed reliability.

Drawings

In order to more clearly illustrate the technical solution of the present invention, the drawings used in the description of the embodiment or the prior art will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.

FIG. 1 is a schematic view of the assembly of a prior art timing cover (a) with the gasket end face profile forward and (b) with the gasket end face profile rearward;

fig. 2 is a schematic structural diagram of an engine sealing structure provided in an embodiment of the present invention, (c) schematic structural diagrams of a first gap and a second gap, (d) a schematic structural diagram of an engine sealing structure after a gasket and a sealing member are filled;

FIG. 3 is a schematic view of the gasket assembled to the engine block;

fig. 4 is a schematic structural view of an engine sealing structure provided by another embodiment of the present invention;

fig. 5 is a schematic view of the structure of the gasket.

In the figure: 10-engine head, 20-engine block, 30-timing cover, 40-gasket, 41-gap, 42-assembly hole, 50-sealing part, 51-first sealing part, 52-second sealing part, 60-first gap, 61-first part, 62-second part, 70-second gap, 80-oil pan, 90-third gap.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprising" and "having," as well as any variations thereof, are intended to cover non-exclusive inclusions.

As shown in fig. 1, which is a schematic view of the assembly of an engine and a timing cover 30 in the prior art, a first gap 60 is formed between an engine cylinder head 10 and an engine cylinder block 20, a second gap 70 is formed between the timing cover 30 and the engine cylinder head 10 and the engine cylinder block 20, a gasket 40 is disposed in the first gap 60 when the engine is assembled, and a sealing member 50 is filled in the second gap 70 when the timing cover is assembled. The first gap 60 and the second gap 70 form three T-shaped joint surfaces, and the sealing effect at the three joint surfaces has an important influence on the air tightness of the whole engine. When the front end surface of the gasket 40 is disposed too far forward, if the gasket 40 expands by heat, a phenomenon as in fig. 1(a) appears: the front end surface of the gasket 40 cuts off the sealing member 50 filled at the second gap 70; when the front end surface of the gasket 40 is disposed too far rearward, if the gasket 40 shrinks when cooled, a phenomenon as shown in fig. 1(b) occurs again: the space between the gasket 40 and the sealing member 50 filled in the second gap 70 is not filled with a material, and a gap exists. Both of these situations present a risk of leakage, which adversely affects the engine's air seal.

Example 1

With reference to fig. 2 and 3, the present embodiment provides an engine sealing structure that can solve the problem of poor engine sealing performance. The engine sealing structure provided by the embodiment of the specification comprises an engine cylinder head 10, an engine cylinder block 20, a timing cover 30, a sealing gasket 40 and a sealing component 50, wherein a first gap 60 is formed between the engine cylinder head 10 and the engine cylinder block 20, and a second gap 70 is formed between the timing cover 30 and the engine cylinder head 10 and the engine cylinder block 20; as shown in fig. 2(a), the distribution of the first gap 60 and the second gap 70 in the engine sealing structure in the present embodiment is schematically illustrated;

the first gap 60 comprises a first part 61 and a second part 62 which are communicated with each other, the first part 61 is arranged on one side of the second part 62 close to the second gap 70, the second part 62 is internally provided with the sealing gasket 40, the sealing gasket 40 is matched with the second part 62, the sealing component 50 comprises a first sealing component 51 and a second sealing component 52, the first sealing component 51 and the second sealing component 52 are connected into a whole, the first sealing component 51 is used for filling the first part 61, and the second sealing component 52 is used for filling the second gap 70; that is, as shown in fig. 2(b), the engine sealing structure after the gasket 40 and the sealing member 50 are filled is schematically illustrated.

Engine cylinder lid 10 is equipped with first recess, engine cylinder body 20 is equipped with the second recess, first recess with the second recess phase-match, first recess with the cooperation of second recess forms first clearance 60, first clearance 50 with second clearance 70 is T type distribution.

Preferably, the length of the first portion 61 is greater than the width of the first gap 60, so that the first portion 61 has an elongated shape or a U-shape or an oblong shape, and can accommodate a certain volume of the first sealing member 51.

The gasket 40 is provided with a fitting hole 42, and the fitting hole 42 allows a fitting member to pass therethrough, the fitting member connecting the engine head 10 and the engine block 20 with passing through the fitting hole 42.

In assembling an engine sealing structure provided by the embodiments of the present specification, the gasket 40 is first assembled at the second groove on the engine block 20, that is, as shown in fig. 3, such that the gasket 40 is opposite to the second portion 62. Next, the engine head 10 is fitted to the gasket 40 by a fitting member such that the first groove on the engine head 10 is opposed to the gasket 40, i.e., such that the gasket 40 is accommodated in the second gap 62.

After the first sealing member 51 is filled in the first gap 61, the second sealing member 52 is filled in the connection surface between the engine head 10 and the engine block 20 and the timing cover 30, the timing cover 30 is assembled on the front end surface between the engine head 10 and the engine block 20, and the second sealing member 52 is pressed in the second gap 70, so that the second sealing member 52 and the first sealing member 51 are connected into a whole.

Since the first portion 61 is formed as an opening having only one side opened when the first seal member 51 is filled at the first portion 61, an operation of pressing the first seal member 51 of the first portion 61 is easily performed when the timing cover 30 is assembled. The first seal member 51 is thus integrated with the second seal member 52, achieving a sealing effect.

Preferably, the sealing member 50 is a sealant.

In the engine sealing device provided by the embodiment of the present specification, the first gap 60 is configured as the second portion 62 for accommodating the sealing gasket 40 and the first portion 61 for accommodating the sealing adhesive, so that the difficulty of assembling the front end surface of the sealing gasket 40 is firstly reduced, that is, when the sealing gasket 40 is assembled, the sealing gasket 40 does not need to be aligned with the front end surfaces of the engine cylinder head 10 and the engine cylinder block 20; secondly, the first part 61 is filled with the sealing part 50 which is the same as the second gap 70, and the sealing part 50 is pressed when the timing cover cap 30 is assembled, so that the effect of integrating the first sealing part 51 and the second sealing part 52 can be realized, an integral sealing rubber line is formed, and the sealing effect on the T-shaped three-joint surface is realized; finally, since the first gap 61 has a volume filled with a certain sealing member 50, and this part of the sealing member 50, i.e. the first sealing member 51, can be connected with the sealing pad 40 and can accommodate the volume change of the sealing pad 40 under the influence of the external ambient temperature.

Example 2

With reference to fig. 2 to 5, the present embodiment provides an engine sealing structure, which is different from embodiment 1 in that, in the engine sealing structure in the embodiment of the present specification, as shown in fig. 4 and 5, a notch 41 is provided at one end of the sealing gasket 40 near the second gap 70, the notch 41 communicates with the first portion 61, the notch 41 is used for filling the sealing member 50, and the sealing member 50 filled in the notch 41 is integrally connected with the first sealing member 51 at the first portion 61. The notch 41 can increase a contact area with the sealing member 50, and enhance the connection between the gasket 40 and the first sealing portion 50.

Optionally, the size of the gap 41 is smaller than the width of the sealing gasket 40, and the diameter of the gap 41 is smaller than the thickness of the sealing gasket 40.

The indentation 41 is hemispherical, although the indentation 41 may have other contours.

The engine sealing component provided in the embodiment of the present specification only describes the differences from the engine sealing structure in the embodiment, and other similar parts can be referred to in embodiment 1, and the assembling method and beneficial effects thereof are also the same as those of the engine sealing component in embodiment 1, and are not repeated here.

Example 3

Embodiments of the present disclosure provide an automobile including an engine sealing mechanism provided in embodiment 1 or embodiment 2.

The foregoing is merely a preferred embodiment of the invention and is not intended to limit the invention, as will be apparent to those skilled in the art, the invention is not limited to the details of the foregoing exemplary embodiment, but rather is embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. An engine sealing structure, characterized by comprising an engine cylinder head (10), an engine block (20), a timing cover (30), a gasket (40) and a sealing member (50), wherein a first gap (60) is formed between the engine cylinder head (10) and the engine block (20), and a second gap (70) is formed between the timing cover (30) and the engine cylinder head (10) and the engine block (20);

the first gap (60) comprises a first portion (61) and a second portion (62) which are communicated with each other, the first portion (61) is arranged on one side of the second portion (62) close to the second gap (70), the second portion (62) is internally provided with the sealing gasket (40), the sealing gasket (40) is matched with the second portion (62), the sealing component (50) comprises a first sealing component (51) and a second sealing component (52), the first sealing component (51) and the second sealing component (52) are connected into a whole, the first sealing component (51) is used for filling the first portion (61), and the second sealing component (52) is used for filling the second gap (70).

2. An engine sealing structure according to claim 1, characterized in that the engine cylinder head (10) is provided with a first groove, the engine cylinder block (20) is provided with a second groove, the first groove is matched with the second groove, the first groove and the second groove are matched to form the first gap (60), and the first gap (60) and the second gap (70) are distributed in a T shape.

3. An engine seal structure according to claim 1, characterized in that the length of the first portion (61) is greater than the width of the first gap (60).

4. An engine seal structure according to claim 1, characterized in that an end of said seal gasket (40) near said second gap (70) is provided with a notch (41), said notch (41) communicates with said first portion (61), said notch (41) is used for filling said seal member (50), and said seal member (50) filled in said notch (41) is integrated with said first seal member (51) at said first portion (61).

5. An engine seal structure according to claim 4, characterized in that the size of the gap (41) is smaller than the width of the seal (40), and the diameter of the gap (41) is smaller than the thickness of the seal (40).

6. An engine seal structure according to claim 5, characterized in that said notch (41) is hemispherical.

7. An engine seal structure according to claim 1, characterized in that the gasket (40) is provided with a fitting hole (42), the fitting hole (42) being capable of passing a fitting member for connecting the engine head (10) and the engine block (20) through the fitting hole (42).

8. An engine seal according to claim 1, characterized in that said seal member (50) is a sealant.

9. The engine sealing structure according to claim 1, characterized by further comprising an oil pan (80), wherein a third gap (90) is formed between the oil pan (80) and the engine block (20), and the third gap (90) and the second gap (70) are distributed in a T shape.

10. An automobile characterized by comprising the engine seal structure according to any one of claims 1 to 9.