CN215408900U - Diesel engine cylinder head cover - Google Patents
Diesel engine cylinder head cover Download PDFInfo
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- CN215408900U CN215408900U CN202121024390.8U CN202121024390U CN215408900U CN 215408900 U CN215408900 U CN 215408900U CN 202121024390 U CN202121024390 U CN 202121024390U CN 215408900 U CN215408900 U CN 215408900U
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- oil
- cylinder head
- head cover
- labyrinth
- gas separation
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- Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Abstract
The utility model relates to a diesel engine cylinder head cover, which comprises a cylinder head cover body (1) and an oil-gas separation structure arranged in the cylinder head cover body; the oil-gas separation structure comprises a waste gas inlet (2), a labyrinth oil-gas separation cavity (3), a waste gas outlet (4) and a cover plate (5); the cover plate (5) covers the labyrinth oil-gas separation cavity (3), and the labyrinth oil-gas separation cavity (3) is internally divided into a plurality of small communicated lattices; the waste gas outlet (4) is arranged on the cylinder head cover body (1) and is communicated with the tail end small grid; the waste gas inlet (2) is arranged on the cover plate (5) and is communicated with the small grid at the head end; the utility model cancels pipeline connection among parts, greatly reduces the cost of the parts, solves the problem of difficult layout of the gas-oil separator, has simple assembly and good oil-gas separation effect, and can effectively avoid the gas-oil separator from being frozen in winter.
Description
Technical Field
The utility model belongs to the technical field of engines, and particularly relates to a cylinder head cover of a diesel engine.
Background
An important part of an engine with a cylinder head cover can prevent external impurities from entering the engine and simultaneously play a role in sealing. High-temperature fuel gas generated by the engine during operation can enter the crankcase through a gap between the piston group and the cylinder, so that blow-by gas is generated. Blow-by gas can carry a large amount of oil gas when flowing through crankcase ventilation system, causes the engine oil loss, worsens the emission simultaneously, consequently must separate the oil gas, reduces the engine oil loss. For an engine with an external oil-gas separator, the occupied space is large, and the air-oil separator and the respirator are easy to freeze in winter. The external structure of the oil-gas separator generally comprises an air inlet pipeline, an air outlet pipeline, the oil-gas separator, a fixed support and an oil return pipeline, the oil-gas separator is difficult to arrange in a cylinder cover, and the oil-gas separation effect is poor. Although there is also an oil-gas separation structure integrated in the cylinder head cover to separate oil gas discharged from the engine, the oil-gas separation device provided in the existing cylinder head cover structure is complicated in structure, the oil-gas separator is difficult to arrange in the space of the cylinder head cover, and the separation effect is poor.
Disclosure of Invention
In order to overcome the problems in the prior art, the utility model provides a cylinder head cover of a diesel engine, which integrates a gas-oil separator and the cylinder head cover into a whole, cancels pipeline connection among parts, greatly reduces the cost of the parts, solves the problem of difficult layout of the gas-oil separator, has simple assembly and good oil-gas separation effect, and can also effectively avoid the gas-oil separator from being frozen in winter.
In order to realize the purpose, the utility model is realized by the following technical scheme:
a diesel engine cylinder head cover comprises a cylinder head cover body and an oil-gas separation structure arranged in the cylinder head cover body; the oil-gas separation structure comprises a waste gas inlet, a labyrinth oil-gas separation cavity, a waste gas outlet and a cover plate; the cover plate covers the labyrinth oil-gas separation cavity, and the labyrinth oil-gas separation cavity is internally divided into a plurality of small communicated grids; the waste gas is arranged on the cylinder head cover body and is communicated with the tail end small grid; the waste gas inlet is arranged on the cover plate and communicated with the small grid at the head end.
Preferably, the labyrinth oil-gas separation chamber comprises three major parts, namely a front end labyrinth area, a middle labyrinth area and a rear end labyrinth area, wherein the middle labyrinth area is arranged in the middle and is provided with an oil filter material.
Preferably, the oil-gas separation structure is arranged to avoid the oil filling port.
Preferably, a labyrinth sealing strip is arranged between the cover plate and the labyrinth oil-gas separation cavity, a cylinder cover sealing strip is arranged between the cover plate and the cylinder cover body, the width of the cylinder cover sealing strip is 2 times of the wall thickness of the cylinder cover body, and the width of the labyrinth sealing strip is the same as the wall thickness of the cylinder cover body.
Preferably, a nameplate is arranged at a position corresponding to the labyrinth oil-gas separation cavity region outside the cylinder cover body.
Preferably, the cover plate is provided with an oil drain pipe which is communicated with the oil filling pipe.
Preferably, the cover plate and the cylinder head cover body are connected through bolts.
Preferably, criss-cross reinforcing ribs are arranged inside the cylinder head cover body.
The utility model has the beneficial effects that:
according to the utility model, the oil-gas separation structure is integrated into the cylinder cover body, so that the problem of difficult spatial arrangement of the external oil-gas separator can be solved, and the problem of icing of the oil-gas separator in winter can be effectively reduced. The layout is beautiful, simple and compact, the cost is saved, and the practicability is strong.
According to the utility model, through the double-labyrinth structure, the gasoline separation time is prolonged, the oil-gas separation is realized to a greater extent, and the oil-gas separation effect is further improved by the arrangement of the built-in middle steel wire mesh or the adsorption cotton area.
The oil-gas separation device has a built-in integrated structure, so that the risk of freezing in winter can be effectively reduced, the cost of parts is further greatly reduced, and the market competitiveness of the product is improved.
Drawings
FIG. 1 is a schematic view of the internal structural arrangement of the engine head cover of the present invention;
FIG. 2 is a schematic view of the overall profile of the engine head cover of the present invention;
FIG. 3 is a schematic illustration of the engine head cover and cover plate assembly of the present invention;
FIG. 4 is a schematic layout view of a labyrinth oil-gas separation chamber cavity of the present invention;
FIG. 5 is a schematic view of the installation position and structure of the oil drain pipe of the present invention;
in the figure, 1-a cylinder head cover body, 2-a waste gas inlet, 3-a labyrinth oil-gas separation cavity, 4-a waste gas outlet, 5-a cover plate, 5-1-an oil drain pipe, 6-an oil filter material, 7-an oil filling port, 8-a bolt hole, 3-1-a front end labyrinth area, 3-2-a middle labyrinth area, 3-3-a rear end labyrinth area and 9-a nameplate.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings to facilitate understanding of the skilled person.
As shown in fig. 1 to 3, the cylinder head cover of the diesel engine comprises a cylinder head cover body 1 and an oil-gas separation structure arranged in the cylinder head cover body, wherein the oil-gas separation structure is arranged to avoid the spatial position of the oil filling opening 7. The oil-gas separation structure comprises a waste gas inlet 2, a labyrinth oil-gas separation cavity 3, a waste gas outlet 4 and a cover plate 5. The cover plate 5 covers the labyrinth oil-gas separation cavity 3. A labyrinth sealing belt is arranged between the cover plate 5 and the labyrinth oil-gas separation cavity 3, a cylinder cover sealing belt is arranged between the cover plate 5 and the cylinder cover body 1, the width of the cylinder cover sealing belt is 2 times of the wall thickness of the cylinder cover body 1, and the width of the labyrinth sealing belt is the same as the wall thickness of the cylinder cover body 1. The cover plate 5 enables the oil-gas separation structure 10 to be relatively sealed, and waste gas flows along a labyrinth path, so that the separation effect is prevented from being influenced by blow-by gas. The cover plate 5 is connected with the cylinder head cover body 1 through bolts.
The labyrinth oil-gas separation cavity 3 is divided into a plurality of small grids which are communicated with each other, so that the labyrinth oil-gas separation cavity 3 is distributed annularly to form a double labyrinth structure, as shown in the attached figures 4-5. The oil-gas separation cavity 3 is divided into three major parts, namely a front end labyrinth area 3-1, a middle labyrinth area 3-2 and a rear end labyrinth area 3-3. The middle labyrinth area 3-2 is arranged in the middle and is provided with oil filtering materials 6 such as steel wire meshes or adsorption cotton. By arranging the oil filtering material 6, the adsorption area of oil-gas separation can be increased. The middle labyrinth area 3-2 is arranged at the middle position of the oil-gas separation structure. If the middle labyrinth area 3-2 is too close to the end, part of the oil separated from the oil will be blown away by the gas. If the middle labyrinth area 3-2 is too close to the front end, the oil-gas separation effect is not good. The waste gas outlet 4 is arranged on the cylinder head cover body 1 and is communicated with the tail end small grid; the waste gas inlet 2 is arranged on the cover plate 5 and is communicated with the small grid at the head end.
An oil drain pipe 5-1 is arranged on the cover plate 5, and the oil drain pipe 5-1 is communicated with the oil filling pipe. The oil separated from the oil gas returns to the oil circuit of the cylinder cover through the oil drain pipe 5-1 for recycling.
As a preferred technical scheme, criss-cross reinforcing ribs are arranged inside the cylinder head cover body 1 and used for enhancing the strength and reliability of the cylinder head cover body 1.
The top of cylinder head cover body 1 is provided with reserves installation screw hole, and the whole car factory of later stage of being convenient for carries on in-process water tank fixed bolster and aircraft bonnet air spring installation demand, and the top is provided with the information that data plate 9 mounted position provided the engine.
Finally, it is noted that the above-mentioned preferred embodiments illustrate rather than limit the utility model, and that, although the utility model has been described in detail with reference to the above-mentioned preferred embodiments, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the scope of the utility model as defined by the appended claims.
Claims (9)
1. A cylinder head cover for a diesel engine, characterized by: comprises a cylinder head cover body (1) and an oil-gas separation structure arranged in the cylinder head cover body; the oil-gas separation structure comprises a waste gas inlet (2), a labyrinth oil-gas separation cavity (3), a waste gas outlet (4) and a cover plate (5); the cover plate (5) covers the labyrinth oil-gas separation cavity (3), and the labyrinth oil-gas separation cavity (3) is internally divided into a plurality of small communicated lattices; the waste gas outlet (4) is arranged on the cylinder head cover body (1) and is communicated with the tail end small grid; the waste gas inlet (2) is arranged on the cover plate (5) and is communicated with the small grid at the head end.
2. A diesel engine cylinder head cover according to claim 1, characterized in that: the labyrinth oil-gas separation cavity (3) comprises three major parts, namely a front end labyrinth area (3-1), a middle labyrinth area (3-2) and a rear end labyrinth area (3-3); the middle labyrinth area (3-2) is arranged in the middle and is provided with an oil filter material (6), and the oil filter material (6) is a steel wire mesh or adsorption cotton.
3. A diesel engine cylinder head cover according to claim 1, characterized in that: the oil-gas separation structure is arranged in a space position which avoids the oil filling port (7).
4. A diesel engine cylinder head cover according to claim 1, characterized in that: the labyrinth sealing strip is arranged between the cover plate (5) and the labyrinth oil-gas separation cavity (3), a cylinder cover sealing strip is arranged between the cover plate (5) and the cylinder cover body (1), the width of the cylinder cover sealing strip is 2 times of the wall thickness of the cylinder cover body (1), and the width of the labyrinth sealing strip is the same as the wall thickness of the cylinder cover body (1).
5. A diesel engine cylinder head cover according to claim 1, characterized in that: and a nameplate is arranged at the area position of the labyrinth oil-gas separation cavity (3) corresponding to the outside of the cylinder head cover body (1).
6. A diesel engine cylinder head cover according to claim 1, characterized in that: an oil drain pipe (5-1) is arranged on the cover plate (5), and the oil drain pipe (5-1) is communicated with the oil filling pipe.
7. A diesel engine cylinder head cover according to claim 1, characterized in that: the cover plate (5) is connected with the cylinder head cover body (1) through bolts.
8. A diesel engine cylinder head cover according to claim 1, characterized in that: criss-cross reinforcing ribs are arranged inside the cylinder head cover body (1).
9. A diesel engine cylinder head cover according to claim 1, characterized in that: the top of the cylinder head cover body (1) is provided with a reserved mounting threaded hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121024390.8U CN215408900U (en) | 2021-05-13 | 2021-05-13 | Diesel engine cylinder head cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121024390.8U CN215408900U (en) | 2021-05-13 | 2021-05-13 | Diesel engine cylinder head cover |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215408900U true CN215408900U (en) | 2022-01-04 |
Family
ID=79675310
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121024390.8U Active CN215408900U (en) | 2021-05-13 | 2021-05-13 | Diesel engine cylinder head cover |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215408900U (en) |
-
2021
- 2021-05-13 CN CN202121024390.8U patent/CN215408900U/en active Active
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