CN213838709U - Crankcase ventilation oil gas pre-separation structure, diesel engine and vehicle - Google Patents
Crankcase ventilation oil gas pre-separation structure, diesel engine and vehicle Download PDFInfo
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- CN213838709U CN213838709U CN202023018404.3U CN202023018404U CN213838709U CN 213838709 U CN213838709 U CN 213838709U CN 202023018404 U CN202023018404 U CN 202023018404U CN 213838709 U CN213838709 U CN 213838709U
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Abstract
The utility model discloses a crankcase ventilation oil gas is isolating construction in advance, diesel engine and vehicle belongs to engine technical field, crankcase ventilation oil gas is isolating construction in advance includes cylinder block and a plurality of cylinder jacket, set up a plurality of cylinder block holes with a plurality of cylinder jacket one-to-ones on the cylinder block side by side, form the preseparation chamber between the inner wall in every cylinder jacket and the cylinder block hole that corresponds, arbitrary adjacent two preseparation chambers are linked together, be equipped with inlet channel and gas outlet on the cylinder block, gas outlet and one of them preseparation chamber intercommunication, one or more intercommunication in inlet channel and the remaining preseparation chamber. The oil-gas mixture entering from the air inlet channel flows in a cyclone manner in the annular pre-separation cavity, oil drops are captured by the inner wall of the cylinder body hole due to the centrifugal effect and flow back to the crankcase through the air inlet channel, the pre-separation of the oil-gas mixture can be realized, the amount of oil carried in the gas is reduced, and the oil consumption is reduced.
Description
Technical Field
The utility model relates to the technical field of engines, especially, relate to a crankcase ventilation oil gas is isolating construction, diesel engine and vehicle in advance.
Background
The crankcase ventilation system is an important component of an engine and is important for maintaining stable pressure of the crankcase, smoothly exhausting gas of the crankcase, improving oil-gas separation efficiency, reducing engine oil consumption of the engine and reducing whole engine emission.
At present, most crankcase ventilation systems adopt a structure that a ventilation opening is arranged in a cylinder cover, and the structure has the defects that the oil content of gas in the cylinder cover is large, the oil quantity taken away by the gas is large, the oil-gas pre-separation efficiency is low, and the oil consumption of an engine is high. In a crankcase ventilation system of a part of engines, a ventilation opening is arranged on a cylinder body, but gas is only extracted from a certain cylinder, so that gas flows of all cylinders in the crankcase are inconsistent, the flow rate of a local area is too high, the carrying amount of gas engine oil is large, and the oil-gas pre-separation efficiency is low.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a crankcase ventilation oil gas preseparation structure, diesel engine and vehicle to the realization is to preseparating by crankcase exhaust gas-oil mixture, reduces the machine oil volume that carries in the gas, reduces the machine oil consumption.
As the conception, the utility model adopts the technical proposal that:
the utility model provides a crankcase ventilation oil gas preseparation structure, includes cylinder block and a plurality of cylinder jacket, be provided with side by side on the cylinder block with a plurality of cylinder body holes of cylinder jacket one-to-one, every the cylinder jacket with correspond form preseparation chamber, arbitrary adjacent two between the inner wall in cylinder body hole preseparation chamber is linked together, be equipped with inlet channel and gas outlet on the cylinder block, gas outlet and one of them preseparation chamber intercommunication, inlet channel and all the other one or more intercommunication in the preseparation chamber, the inlet channel intercommunication the crankcase, the gas outlet is used for communicateing oil and gas separator.
As the preferable technical scheme of the crankcase ventilation oil-gas pre-separation structure, a plurality of air inlet channels are arranged and are respectively communicated with different pre-separation cavities.
As an optimal technical scheme of a crankcase ventilation oil-gas pre-separation structure, a cooling water cavity is further formed between the cylinder sleeve and the inner wall of the cylinder body hole, a sealing ring is clamped between the cylinder sleeve and the inner wall of the cylinder body hole, and the sealing ring is used for sealing and separating the cooling water cavity and the pre-separation cavity.
As an optimal technical scheme of a crankcase ventilation oil-gas pre-separation structure, a plurality of sealing rings are arranged corresponding to each cooling water cavity, and the sealing rings are arranged along the axial direction of the cylinder sleeve at intervals.
As the preferable technical scheme of the crankcase ventilation oil-gas pre-separation structure, the cylinder body hole comprises a first hole and a second hole which are communicated, the inner wall of the first hole and the space between the cylinder sleeves form the cooling water cavity, the inner wall of the second hole and the space between the cylinder sleeves form the pre-separation cavity, and the cooling water cavity is positioned above the pre-separation cavity.
As the preferable technical scheme of a crankcase ventilation oil-gas pre-separation structure, the cylinder body hole further comprises a third hole communicated with the first hole and the second hole, and the sealing ring is pressed against the inner wall of the third hole.
As an optimal technical scheme of a crankcase ventilation oil-gas pre-separation structure, a vent hole is formed in the hole wall between every two adjacent cylinder body holes, and the vent hole is communicated with the two corresponding pre-separation cavities.
As the preferable technical scheme of the crankcase ventilation oil-gas pre-separation structure, the number of the cylinder sleeves is six, wherein one of the two pre-separation cavities positioned at the innermost side is communicated with the gas outlet, and the rest four pre-separation cavities are communicated with the gas inlet channel.
In order to achieve the above object, the present invention further provides a diesel engine, including the crankcase ventilation pre-separation structure in any one of the above solutions.
In order to achieve the above object, the present invention also provides a vehicle including the above diesel engine.
The utility model has the advantages that:
the utility model provides a crankcase ventilation is isolating construction in advance, diesel engine and vehicle, crankcase ventilation is isolating construction in advance through at every cylinder jacket and the cylinder body hole that corresponds between form the preseparation chamber in advance, arbitrary adjacent two preseparation chambers are linked together in advance, be equipped with inlet channel and gas outlet on the cylinder block, gas outlet and one of them preseparation chamber intercommunication in advance, one or more intercommunication in inlet channel and the remaining preseparation chamber, the oil-gas mixture who gets into by inlet channel carries out whirlwind formula flow in being annular preseparation intracavity in advance, the machine oil liquid drop in the oil-gas mixture is caught by the inner wall in cylinder body hole because of centrifugal action, then can flow back to the crankcase through the inlet channel, can realize the preseparation to the oil-gas mixture, reduce the machine oil volume that carries in the gas, reduce the machine oil consumption.
Drawings
FIG. 1 is a top view of a crankcase ventilation preseparation arrangement provided by the present invention;
fig. 2 is a sectional view taken along the line a-a in fig. 1.
In the figure:
1. a cylinder block; 11. an air intake passage; 12. an air outlet; 13. a vent hole; 10. a pre-separation chamber; 20. a cooling water cavity;
2. a cylinder liner;
3. and (5) sealing rings.
Detailed Description
In order to make the technical problem solved by the present invention, the technical solution adopted by the present invention and the technical effect achieved by the present invention clearer, the technical solution of the present invention will be further explained by combining the drawings and by means of the specific implementation manner. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some but not all of the elements related to the present invention are shown in the drawings.
In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
In the description of the present embodiment, the terms "upper", "lower", "left", "right", and the like are used in the orientation or positional relationship shown in the drawings only for convenience of description and simplicity of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.
As shown in fig. 1 and fig. 2, the present embodiment provides a crankcase ventilation oil-gas preseparation structure, which includes a cylinder block 1 and a plurality of cylinder sleeves 2, where the cylinder block 1 is provided with a plurality of cylinder block holes arranged side by side, the cylinder sleeves 2 and the cylinder block holes are arranged in a one-to-one correspondence, a preseparation cavity 10 is formed between each cylinder sleeve 2 and an inner wall of the corresponding cylinder block hole, any two adjacent preseparation cavities 10 are communicated, the cylinder block 1 is provided with an air inlet channel 11 and an air outlet 12, the air outlet 12 is communicated with one of the preseparation cavities 10, the air inlet channel 11 is communicated with a crankcase, and the air outlet 12 is used for communicating with an oil-gas separator. In the present embodiment, the cylinder block 1 is formed by casting, and the intake passage 11 and the outlet port 12 are also formed when the cylinder block 1 is cast.
It can be understood that, by forming the pre-separation chamber 10 between each cylinder sleeve 2 and the inner wall of the corresponding cylinder body hole, the pre-separation chamber 10 is an annular chamber, the oil-gas mixture entering from the air inlet channel 11 flows in the pre-separation chamber 10 in a cyclone manner, oil droplets in the oil-gas mixture are captured by the inner wall of the cylinder body hole due to centrifugal action and then flow back to the crankcase through the air inlet channel 11, so that pre-separation of the oil-gas mixture can be realized, the amount of oil carried in the gas is reduced, and the oil consumption is reduced.
Furthermore, a plurality of air inlet channels 11 are arranged, and the air inlet channels 11 are respectively communicated with different pre-separation cavities 10. Specifically, as shown in fig. 1 and 2, in the present embodiment, six cylinder sleeves 2 are provided, six cylinder block holes are provided on the corresponding cylinder block 1, a pre-separation chamber 10 is formed between each cylinder sleeve 2 and the corresponding cylinder block hole, and four air inlet passages 11 are provided. One of the two central pre-separation cavities 20 is communicated with the air outlet 12, and the other four pre-separation cavities 10 are respectively communicated with the four air inlet channels 11 in a one-to-one correspondence manner. In another embodiment, the other four pre-separation chambers 10 are all communicated with one intake passage 11, and in another embodiment, the number of the cylinder body holes and the number of the cylinder sleeves 2 can also be set according to actual needs, for example, five cylinder body holes and five cylinder sleeves 2 are provided, and at this time, the crankcase ventilation oil-gas pre-separation structure has six pre-separation chambers 10.
Further, in this embodiment, a vent hole 13 is opened on a hole wall between two adjacent cylinder block holes, and the vent hole 13 communicates with the two corresponding pre-separation chambers 10. It can be understood that through setting up air vent 13 for a plurality of preseparation chambeies 10 communicate in proper order, and the time that the gas-oil mixture persists in preseparation chamber 10 increases in advance, is favorable to the machine oil liquid drop in the gas-oil mixture to be caught by the inner wall in cylinder body hole, improves the preseparation effect.
Further, as shown in fig. 1, a cooling water cavity 20 is further formed between the cylinder liner 2 and the inner wall of the corresponding cylinder body hole, a sealing ring 3 is clamped between the cylinder liner 2 and the inner wall of the cylinder body hole, and the sealing ring 3 is used for sealing and isolating the cooling water cavity 20 and the pre-separation cavity 10. Preferably, a plurality of sealing rings 3 are provided for each cooling water chamber 20, and the plurality of sealing rings 3 for each cooling water chamber 20 are provided at intervals in the axial direction of the cylinder liner 2.
Specifically, in the present embodiment, the cylinder block holes include a first hole and a second hole that are communicated with each other, the cooling water chamber 20 is formed between the inner wall of the first hole and the cylinder liner 2, and the pre-separation chamber 10 is formed between the inner wall of the second hole and the cylinder liner 2. The preseparation chamber 10 is located below the cooling water chamber 20. Further, the cylinder block hole still includes third hole and fourth hole, and the third hole communicates between first hole and second hole, and the second hole communicates between third hole and fourth hole, and sealing washer 3 supports the inner wall of pressing in the third hole, and cylinder jacket 2 wears to locate the fourth hole.
In summary, in the crankcase ventilation oil-gas pre-separation structure provided by this embodiment, an annular pre-separation chamber 10 is formed between each cylinder liner 2 and the corresponding cylinder body hole, any two adjacent pre-separation chambers 10 are communicated, the cylinder body 1 is provided with an air inlet channel 11 and an air outlet 12, the air outlet 12 is communicated with one of the pre-separation chambers 10, the air inlet channel 11 is communicated with one or more of the other pre-separation chambers 10, an oil-gas mixture entering from the air inlet channel 11 flows in a cyclone manner in the annular pre-separation chamber 10, oil droplets in the oil-gas mixture are captured by the inner wall of the cylinder body hole due to a centrifugal effect and then can flow back to the crankcase through the air inlet channel 11, so that pre-separation of the oil-gas mixture can be achieved, the amount of oil carried in the gas is reduced, and the consumption of the oil is reduced.
The embodiment also provides a diesel engine which comprises the crankcase ventilation oil-gas pre-separation structure.
The embodiment also provides a vehicle comprising the diesel engine.
The above embodiments have been described only the basic principles and features of the present invention, and the present invention is not limited by the above embodiments, and is not departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. The utility model provides a crankcase ventilation oil gas preseparation structure, its characterized in that, includes cylinder block (1) and a plurality of cylinder jacket (2), be provided with side by side on cylinder block (1) a plurality of cylinder block holes of cylinder jacket (2) one-to-one, every cylinder jacket (2) and corresponding form preseparation chamber (10), arbitrary adjacent two preseparation chamber (10) are linked together, be equipped with inlet channel (11) and gas outlet (12) on cylinder block (1), gas outlet (12) and one of them preseparation chamber (10) intercommunication, inlet channel (11) and the rest one or more intercommunication in preseparation chamber (10), inlet channel (11) intercommunication the crankcase, gas outlet (12) are used for communicateing oil and gas separator.
2. The crankcase ventilation oil-gas preseparation structure according to claim 1, characterized in that a plurality of air inlet passages (11) are provided, and the air inlet passages (11) are respectively communicated with different preseparation cavities (10).
3. The crankcase ventilation oil-gas preseparation structure according to claim 1, characterized in that a cooling water cavity (20) is further formed between the cylinder sleeve (2) and the inner wall of the corresponding cylinder body hole, a sealing ring (3) is clamped between the cylinder sleeve (2) and the inner wall of the cylinder body hole, and the sealing ring (3) is used for sealing and separating the cooling water cavity (20) and the preseparation cavity (10).
4. The crankcase ventilation oil-gas pre-separation structure according to claim 3, wherein a plurality of sealing rings (3) are arranged corresponding to each cooling water cavity (20), and the plurality of sealing rings (3) are arranged at intervals along the axial direction of the cylinder sleeve (2).
5. The crankcase ventilation oil-gas preseparation structure according to claim 3, characterized in that the cylinder body holes comprise a first hole and a second hole which are communicated, the cooling water cavity (20) is formed between the inner wall of the first hole and the cylinder sleeve (2), the preseparation cavity (10) is formed between the inner wall of the second hole and the cylinder sleeve (2), and the cooling water cavity (20) is positioned above the preseparation cavity (10).
6. The crankcase ventilation oil-gas preseparation structure according to claim 5, wherein the cylinder body hole further comprises a third hole communicated between the first hole and the second hole, and the sealing ring (3) is pressed against the inner wall of the third hole.
7. The crankcase ventilation oil-gas preseparation structure according to claim 1, characterized in that a vent hole (13) is opened on the hole wall between two adjacent cylinder body holes, and the vent hole (13) is communicated with two corresponding preseparation cavities (10).
8. The crankcase ventilation oil-gas pre-separation structure according to claim 1, characterized in that the cylinder sleeve (2) is provided with six, wherein one of the two pre-separation chambers (10) positioned at the innermost side is communicated with the gas outlet (12), and the other four pre-separation chambers (10) are communicated with the gas inlet passage (11).
9. A diesel engine comprising a crankcase ventilation oil gas preseparation arrangement according to any one of claims 1 to 8.
10. A vehicle characterized by comprising the diesel engine according to claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023018404.3U CN213838709U (en) | 2020-12-15 | 2020-12-15 | Crankcase ventilation oil gas pre-separation structure, diesel engine and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023018404.3U CN213838709U (en) | 2020-12-15 | 2020-12-15 | Crankcase ventilation oil gas pre-separation structure, diesel engine and vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213838709U true CN213838709U (en) | 2021-07-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023018404.3U Active CN213838709U (en) | 2020-12-15 | 2020-12-15 | Crankcase ventilation oil gas pre-separation structure, diesel engine and vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213838709U (en) |
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2020
- 2020-12-15 CN CN202023018404.3U patent/CN213838709U/en active Active
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