CN215333047U

CN215333047U - Engine

Info

Publication number: CN215333047U
Application number: CN202122835505.8U
Authority: CN
Inventors: 吴恢栋; 傅骏喜; 李寒磊
Original assignee: Jiangsu Changfa Agricultural Equipment Co Ltd
Current assignee: Jiangsu Changfa Agricultural Equipment Co Ltd
Priority date: 2021-11-19
Filing date: 2021-11-19
Publication date: 2021-12-28
Anticipated expiration: 2031-11-19

Abstract

The present invention provides an engine, comprising: the cylinder cover is provided with an oil return hole with an upward opening; the cylinder head cover is fixed at the upper end of the cylinder head cover, an oil-gas separation part is arranged in the cylinder head cover, and the oil-gas separation part comprises a first channel and a second channel which are communicated with each other; the first baffle is positioned at the bottom of the oil-gas separation part and provided with an oil collecting groove, and a first oil hole and a second oil hole are formed in the bottom of the oil collecting groove; the oil collecting groove extends to two ends of the first baffle plate in the length direction along the length direction of the first baffle plate; the first oil hole is positioned at the bottom of the first passage, and the second oil hole is positioned at the bottom of the second passage; and one end of the exhaust pipe is communicated with the oil-gas separation part, and the other end of the exhaust pipe is communicated with the outside of the cylinder head cover. According to the utility model, the oil-gas separation part is arranged, so that the oil-gas separation efficiency is improved, and the problem that the oil collecting tank is blocked due to the blockage of the oil hole caused by the accumulation of impurities is avoided.

Description

Engine

Technical Field

The utility model relates to an engine, in particular to an oil-gas separation device.

Background

In the prior art, part of exhaust gas generated by combustion of fuel oil and compressed air in a combustion chamber enters a crankcase through a piston ring opening and other parts, and if the exhaust gas in the crankcase is not led out, the temperature of engine oil is increased, oil impurities are increased, and the performance of lubricating and cooling the engine oil is deteriorated. The structural differences directly result in a large difference in the oil-gas separation effect. Therefore, it is necessary to provide an engine with high oil-gas separation efficiency to overcome the above-mentioned drawbacks.

Disclosure of Invention

The utility model aims to provide an engine with high oil-gas separation efficiency.

According to an aspect of the present invention, there is provided an engine comprising:

the cylinder cover is provided with an oil return hole with an upward opening;

the cylinder head cover is fixed at the upper end of the cylinder head cover, an oil-gas separation part is arranged in the cylinder head cover, and the oil-gas separation part comprises a first channel and a second channel which are communicated with each other;

the first baffle is positioned at the bottom of the oil-gas separation part and provided with an oil collecting groove, and a first oil hole and a second oil hole are formed in the bottom of the oil collecting groove;

the oil collecting groove extends to two ends of the first baffle plate in the length direction along the length direction of the first baffle plate;

the first oil hole is positioned at the bottom of the first passage, and the second oil hole is positioned at the bottom of the second passage;

and one end of the exhaust pipe is communicated with the oil-gas separation part, and the other end of the exhaust pipe is communicated with the outside of the cylinder head cover.

Preferably, the cylinder head cover comprises a first side wall, the oil-gas separation part comprises a second side wall extending downwards from the top of the cylinder head cover, the second side wall is parallel to the first side wall, one end of the first baffle is fixed to the first side wall, the other end of the first baffle is fixed to the second side wall, the oil collection groove is V-shaped in cross section, and the oil collection groove extends in a direction parallel to the second side wall.

Preferably, the cylinder head cover further comprises a second baffle plate connecting the first side wall and the second side wall, a lower bottom surface of the second baffle plate is in contact with an upper surface of the first baffle plate, the first side wall, the second side wall, the first baffle plate and the second baffle plate form a first cavity, and the first channel and the second channel are located in the first cavity.

Preferably, the oil-gas separation portion further includes a first partition plate, a third partition plate, a fifth partition plate and a seventh partition plate that all extend from the second side wall to the first side wall, the oil-gas separation portion further includes a second partition plate, a fourth partition plate, a sixth partition plate and an eighth partition plate that all extend from the first side wall to the second side wall, the second partition plate is located between the first partition plate and the third partition plate, the fourth partition plate is located between the third partition plate and the fifth partition plate, the sixth partition plate is located between the fifth partition plate and the seventh partition plate, and the eighth partition plate is located between the seventh partition plate and the second partition plate.

Preferably, an air inlet is formed between the first partition plate and the first side wall, and an air outlet is formed between the eighth partition plate and the second partition plate.

Preferably, first separation chamber is constituteed to first baffle and second baffle, second separation chamber is constituteed to second baffle and third baffle, first passageway is constituteed to first separation chamber and second separation chamber, third separation chamber is constituteed to third baffle and fourth baffle, fourth separation chamber is constituteed to fourth baffle and fifth baffle, second passageway is constituteed to third separation chamber and fourth separation chamber, fifth separation chamber is constituteed to fifth baffle and sixth baffle, sixth separation chamber is constituteed to sixth baffle and seventh baffle, third passageway is constituteed to fifth separation chamber and sixth separation chamber, seventh separation chamber is constituteed to seventh baffle and eighth baffle, eighth separation chamber is constituteed to eighth baffle and second baffle, fourth passageway is constituteed to seventh separation chamber and eighth separation chamber.

Preferably, a third oil hole and a fourth oil hole are further arranged in the oil collecting groove, the first oil hole is located at the bottom of the second separating cavity, the second oil hole is located at the bottom of the fourth separating cavity, the third oil hole is located at the bottom of the sixth separating cavity, and the fourth oil hole is located at the bottom of the eighth separating cavity.

Preferably, the exhaust pipe is integrally arranged at the top of the cylinder head cover, the exhaust port is located at the top of the eighth separation cavity, the exhaust port comprises an exhaust groove which is concavely arranged from bottom to top, the exhaust port is communicated with the exhaust pipe, and a wire harness assembling hole is formed in one side of the exhaust pipe.

Preferably, an oil hole is further formed in one side of the air inlet, and the oil hole is formed in the top of the cylinder head cover.

Preferably, the lower bottom surfaces of the first partition plate, the second partition plate, the third partition plate, the fourth partition plate, the fifth partition plate, the sixth partition plate, the seventh partition plate and the eighth partition plate are all arranged in contact with the first baffle plate, and the first channel, the second channel, the third channel and the fourth channel are communicated with each other.

Compared with the prior art, the engine provided by the utility model has the following beneficial effects:

the arrangement of the separation cavity and the oil hole enables the engine oil particles doped in the waste gas to be separated more thoroughly, oil liquid after separation conveniently falls back into the engine, and the oil-gas separation efficiency is high. The problem that the oil hole is blocked due to accumulation of impurities and the oil collecting groove is further blocked is avoided. The time cost and the labor cost of cleaning and maintenance are saved.

Drawings

The utility model is described in further detail below with reference to the following figures and detailed description:

FIG. 1 is a side view of a cylinder head and cylinder head cover of the present invention;

FIG. 2 is a cross-sectional view of the cylinder head and cylinder head cover of the present invention;

FIG. 3 is a bottom view of the cylinder head cover of the present invention;

FIG. 4 is a bottom view of the cylinder head cover assembly of the present invention;

FIG. 5 is a cross-sectional view of the cylinder head cover assembly of the present invention;

FIG. 6 is a cross-sectional view of a first baffle of the present invention;

fig. 7 is a partial cross-sectional view of the cylinder head cover assembly of the present invention.

Detailed Description

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments 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 present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

For the sake of simplicity, the drawings only schematically show the parts relevant to the present invention, and they do not represent the actual structure as a product. In addition, in order to make the drawings concise and understandable, components having the same structure or function in some of the drawings are only schematically illustrated or only labeled. In this document, "one" means not only "only one" but also a case of "more than one".

It should be further understood that the term "and/or" as used in this specification and the appended claims refers to and includes any and all possible combinations of one or more of the associated listed items.

In this context, it is to be understood that, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; 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 meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In addition, in the description of the present application, the terms "first", "second", and the like are used only for distinguishing the description, and are not intended to indicate or imply relative importance.

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following description will be made with reference to the accompanying drawings. It is obvious that the drawings in the following description are only some examples of the utility model, and that for a person skilled in the art, other drawings and embodiments can be derived from them without inventive effort.

Referring to fig. 1 and 2, the present invention discloses an engine including a cylinder head 1, a cylinder head cover 2, a first baffle 3, and an exhaust pipe 4. The head cover 2 is fixed to the upper end of the cylinder head 1. An oil-gas separation part 5 is arranged in the cylinder head cover 2, and the first baffle 3 is positioned at the lower end of the oil-gas separation part 5. An exhaust pipe 4 is integrally integrated on the top of the cylinder head cover 2 and communicates with the oil-gas separation portion 5.

Referring to fig. 3, the head cover 2 includes a first side wall 21, a second side wall 22 extending downward from the top of the head cover 2 in parallel with the first side wall 21, and a second baffle 23 connecting the first side wall 21 and the second side wall 22. The first side wall 21, the second side wall 22, the first baffle 3 and the second baffle 23 form a first cavity 24. A first partition plate 51 is formed by extending from the second side wall 22 in parallel with the second baffle 23 toward the first side wall 21, and an air inlet 241 is formed between the first partition plate 51 and the first side wall 21.

The oil-gas separation portion 5 further includes a second partition plate 52, a fourth partition plate 54, a sixth partition plate 56, and an eighth partition plate 58, which are each provided to extend from the first side wall 21 to the second side wall 22, and a third partition plate 53, a fifth partition plate 55, and a seventh partition plate 57, which are each provided to extend from the second side wall 22 to the first side wall 21. The first partition plate 51, the second partition plate 52, the third partition plate 53, the fourth partition plate 54, the fifth partition plate 55, the sixth partition plate 56, the seventh partition plate 57, and the eighth partition plate 58 are arranged in parallel with each other.

A first separation chamber 501 is formed between the first partition plate 51 and the second partition plate 52, a second separation chamber 502 is formed between the second partition plate 52 and the third partition plate 53, a third separation chamber 503 is formed between the third partition plate 53 and the fourth partition plate 54, a fourth separation chamber 504 is formed between the fourth partition plate 54 and the fifth partition plate 55, a fifth separation chamber 505 is formed between the fifth partition plate 55 and the sixth partition plate 56, a sixth separation chamber 506 is formed between the sixth partition plate 56 and the seventh partition plate 57, a seventh separation chamber 507 is formed between the seventh partition plate 57 and the eighth partition plate 58, and an eighth separation chamber 508 is formed between the eighth partition plate 58 and the second partition plate 23.

The first separation chamber 501 and the second separation chamber 502 constitute a first passage 511, the third separation chamber 503 and the fourth separation chamber 504 constitute a second passage 512, the fifth separation chamber 505 and the sixth separation chamber 506 constitute a third passage 513, and the seventh separation chamber 507 and the eighth separation chamber 508 constitute a fourth passage 514. The first passage 511, the second passage 512, the third passage 513, and the fourth passage 514 communicate with each other.

Referring to fig. 4, 5 and 6, the first baffle 3 includes an oil sump 31 disposed parallel to the second side wall 22, the oil sump 31 has a V-shaped cross section, and a first oil hole 301, a second oil hole 302, a third oil hole 303 and a fourth oil hole 304 are opened at the bottom of the oil sump 31. The first oil hole 301 is provided corresponding to the first passage 511, and preferably, the first oil hole 301 is provided at the bottom of the second separation chamber 502. Correspondingly, the second oil hole 302 is formed at the bottom of the fourth separating cavity 504, the third oil hole 303 is formed at the bottom of the sixth separating cavity 506, and the fourth oil hole 304 is formed at the bottom of the eighth separating cavity 508.

The partition plates of the utility model extend from two sides of the separation cavity in the horizontal direction to the other side and are arranged in a crossed manner, and the first baffle plate 3 is arranged below the partition plates. The partition is provided integrally with the cylinder head cover 2 by casting, and the first baffle 3 is fixed to the cylinder head cover 2 by screws. The oil collecting groove 31 extends to both ends of the first baffle 3 in the longitudinal direction of the first baffle 3, and if the oil hole is blocked, the engine oil can flow to both ends in the oil collecting groove 31 and fall back to the cylinder head 1 from the openings of both ends.

The arrangement of the separation cavity and the oil hole ensures that engine oil particles doped in the waste gas are separated more thoroughly, and the separated oil can fall back into the engine conveniently. The problem that the oil hole is blocked due to accumulation of impurities and the oil collecting groove is further blocked is avoided. Time cost and labor cost of cleaning and maintenance are saved.

Referring to fig. 7, the exhaust pipe 4 includes an exhaust port 41 disposed at the top of the eighth separation chamber 508, and an exhaust groove 42 recessed from bottom to top is further disposed at the exhaust port 41. A harness fitting hole 43 is also provided at one side of the exhaust pipe 4. An oil hole 2411 is further provided at one side of the intake port 241 for adding oil into the engine. The top of the cylinder cover 1 is also provided with an oil return hole 11, and the oil return hole 11 is positioned in the cylinder head cover 2.

Generally, a through hole is opened on the side of a body tappet (not labeled) to communicate a body crankcase (not labeled) with a cylinder head 1 and a cylinder head cover 2. I.e. the crankcase mixture, is communicated with the cylinder head cover 2. The mixture of exhaust gas and engine oil enters the oil-gas separation portion 5 from the intake port 241, passes through a plurality of separation chambers, and engine oil particles adhere to the partition plate, are collected downward in the oil sump 31, and fall back into the oil return hole 11 at the upper end of the cylinder head 1 through the oil hole, and finally return to the oil pan (not labeled). The waste gas is discharged through the exhaust pipe 4, and the exhaust pipe 4 is generally externally connected with a respirator or is connected with a rubber pipe and directly discharges the waste gas to the outside of the machine body.

The oil-gas separation device disclosed by the utility model can increase the number of the separation cavities according to the needs and correspondingly increase the number of the oil holes in the oil collecting tank, thereby achieving a better oil-gas separation effect.

It will be apparent to those skilled in the art that various modifications and variations can be made to the above-described exemplary embodiments of the present invention without departing from the spirit and scope of the utility model. Thus, it is intended that the present invention cover the modifications and variations of this invention provided they come within the scope of the appended claims and their equivalents.

Claims

1. An engine, comprising:

the cylinder cover is provided with an oil return hole with an upward opening;

2. The engine of claim 1, wherein the head cover includes a first sidewall, the oil-gas separating portion includes a second sidewall extending downward from a top of the head cover, the second sidewall being parallel to the first sidewall, one end of the first baffle being fixed to the first sidewall, the other end of the first baffle being fixed to the second sidewall, the oil sump having a V-shaped cross-section, the oil sump extending in a direction parallel to the second sidewall.

3. The engine of claim 2, wherein the cylinder head cover further comprises a second baffle connecting the first side wall and the second side wall, a lower bottom surface of the second baffle being disposed in contact with an upper surface of the first baffle, the first side wall, the second side wall, the first baffle, and the second baffle defining a first cavity, the first channel and the second channel each being located within the first cavity.

4. The engine of claim 3, wherein the oil-gas separation portion further comprises a first baffle, a third baffle, a fifth baffle, and a seventh baffle, each extending from the second sidewall to the first sidewall, the oil-gas separation portion further comprises a second baffle, a fourth baffle, a sixth baffle, and an eighth baffle, each extending from the first sidewall to the second sidewall, the second baffle being positioned between the first baffle and the third baffle, the fourth baffle being positioned between the third baffle and the fifth baffle, the sixth baffle being positioned between the fifth baffle and the seventh baffle, and the eighth baffle being positioned between the seventh baffle and the second baffle.

5. The engine of claim 4, wherein an intake port is formed between the first partition and the first sidewall, and an exhaust port is formed between the eighth partition and the second partition.

6. The engine of claim 5, wherein the first separator plate and the second separator plate form a first separation chamber, the second separator plate and the third separator plate form a second separation chamber, the first separation chamber and the second separation chamber form a first channel, the third separator plate and the fourth separator plate form a third separation chamber, the fourth separator plate and the fifth separator plate form a fourth separation chamber, the third separation chamber and the fourth separation chamber form a second channel, the fifth separator plate and the sixth separator plate form a fifth separation chamber, the sixth separator plate and the seventh separator plate form a sixth separation chamber, the fifth separation chamber and the sixth separation chamber form a third channel, the seventh separator plate and the eighth separator plate form a seventh separation chamber, the eighth separator plate and the second separator plate form an eighth separation chamber, and the seventh separation chamber and the eighth separation chamber form a fourth channel.

7. The engine according to claim 6, characterized in that a third oil hole and a fourth oil hole are further provided in the oil sump, the first oil hole is located at the bottom of the second separation chamber, the second oil hole is located at the bottom of the fourth separation chamber, the third oil hole is located at the bottom of the sixth separation chamber, and the fourth oil hole is located at the bottom of the eighth separation chamber.

8. The engine of claim 7, wherein the exhaust pipe is integrally provided at the top of the cylinder head cover, the exhaust port is provided at the top of the eighth separation chamber, the exhaust port includes an exhaust groove recessed from the bottom to the top, the exhaust port communicates with the exhaust pipe, and a harness installation hole is provided at one side of the exhaust pipe.

9. The engine of claim 8, wherein the intake port further includes an oil hole at one side thereof, the oil hole being provided at a top of the head cover.

10. The engine of claim 9, wherein the lower bottom surfaces of the first, second, third, fourth, fifth, sixth, seventh and eighth bulkheads are each disposed in contact with the first baffle, and the first, second, third and fourth passages are in communication with each other.