CN211202137U - Cylinder block oil return ventilation structure and engine - Google Patents
Cylinder block oil return ventilation structure and engine Download PDFInfo
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- CN211202137U CN211202137U CN201922256657.5U CN201922256657U CN211202137U CN 211202137 U CN211202137 U CN 211202137U CN 201922256657 U CN201922256657 U CN 201922256657U CN 211202137 U CN211202137 U CN 211202137U
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Abstract
The utility model relates to the technical field of engine, specifically disclose a cylinder block oil return air-breather and engine, cylinder block oil return air-breather is including locating oil collecting cavity, oil return way and the chamber of ventilating on the cylinder block, and the oil return way runs through the cylinder block along vertical direction, and the top face of cylinder block is located along vertical direction to the chamber of ventilating, and ventilates the chamber and can communicate with oil collecting cavity. The oil return channel and the vent cavity extend along the vertical direction, and parts for forming the oil return channel and the vent cavity are conveniently demoulded during die casting, so that the oil return channel and the vent cavity are directly formed through a die casting process; the oil collecting cavity penetrates through the cylinder block along a horizontal first direction, the oil collecting cavity is communicated with the oil return channel and is positioned between two end faces of the cylinder block in the vertical direction, all engine oil flowing back from the cylinder cover flows into the oil collecting cavity, the engine oil flowing in can be balanced through the oil collecting cavity, and the engine oil is guaranteed to uniformly flow into the oil pan so as to optimize the oil return effect; the oil collecting cavity and the oil return channel form a staggered cavity structure, and the structural strength and the rigidity of the cylinder body can be improved.
Description
Technical Field
The utility model relates to the technical field of engines, especially, relate to a cylinder block oil return ventilation structure and engine.
Background
The automobile engine is the heart of an automobile, and in the development work of the engine, a cylinder block is the most important main part, so that the development of an engine product is greatly influenced. With stricter and stricter fuel consumption regulations, a lightweight cylinder block becomes a necessary choice. The lightweight cylinder body mainly adopts thin-wall alloy cast iron or aluminum alloy materials. In the running process of an engine, all moving parts need to be lubricated by engine oil, and the lubrication needs the engine oil to flow into and flow out of a lubricated mechanism, so an engine oil return passage is usually arranged on a cylinder block, so that the engine oil can be recycled.
The common oil return passages mainly comprise two types: one is that the oil return passage is integrated in the cylinder block, and directly flows into the oil pan from the top surface of the cylinder block through the oil return passage, and the oil return passage is generally formed by direct casting; the other oil return channel is used for returning the engine oil to the oil sump through an external pipeline, and the mode is high in cost and complex in structural arrangement. The first form of oil return passage is generally of a special-shaped structure, and the special-shaped structure means that a plurality of bent parts exist in the shape of the passage. The method is feasible under the condition that the thin-wall cast iron cylinder block adopts a sand casting process, but for the die-casting aluminum alloy cylinder block, a special-shaped structure cannot be formed due to the requirement of straight core and uniform size transition, so that the realization of a directly-cast special-shaped oil return channel on the die-casting aluminum alloy cylinder block is difficult.
For a supercharged engine, the cylinder block and the cylinder head have complicated structures, if the arrangement and distribution of oil return channels are not particularly reasonable, the flow rate of engine oil flowing from the cylinder head to the cylinder block and flowing into the oil pan is not uniform, the oil return effect is not optimized, and the abnormal abrasion of the engine can be finally caused to shorten the service life of the engine, so that the oil return balance needs to be ensured for the supercharged engine.
In addition, in the prior art, an oil collecting groove is usually designed on the top plane of the cylinder block, and the oil collecting groove is in a long and thin strip shape and is used for collecting engine oil in each oil return hole of the cylinder head together and flowing back to the oil pan through an oil return channel of the cylinder block.
SUMMERY OF THE UTILITY MODEL
The utility model discloses an aim at: the utility model provides a cylinder block oil return ventilation structure and engine to solve the oil return way among the prior art and adopt special-shaped structure usually, be difficult to the problem of direct casting on die casting aluminum alloy cylinder block, and can't effectively guarantee the balanced problem of velocity of flow when engine oil flows to the cylinder block and flows into the oil pan from the cylinder cap.
In one aspect, the utility model provides a cylinder block oil return air-breather, this cylinder block oil return air-breather include set up oil collecting cavity, oil return way and the chamber of ventilating on the cylinder block, the oil return way runs through along vertical direction the cylinder block just is in form the top hydraulic fluid port on the cylinder block top face, and form the bottom hydraulic fluid port on the bottom face of cylinder block, the oil collecting cavity runs through along the first direction the cylinder block, the first direction is the horizontal direction, oil collecting cavity intercommunication the oil return way just is located the top hydraulic fluid port with between the bottom hydraulic fluid port, the top hydraulic fluid port is used for the oil return port intercommunication of cylinder head, the bottom hydraulic fluid port be used for with the oil pan intercommunication, the chamber of ventilating along vertical direction set up in the top face of cylinder block, just the chamber of ventilating be configured into can with oil collecting cavity intercommunication.
As the preferable technical scheme of the oil return ventilation structure of the cylinder body, the oil return ventilation structure of the cylinder body further comprises an oil-gas separation cavity arranged on the cylinder body, and the oil-gas separation cavity is communicated with the oil collection cavity and the ventilation cavity.
As a preferable technical solution of the oil return ventilation structure of the cylinder block, the oil collecting cavity is disposed on a first side wall of the cylinder block in a second direction, the second direction is perpendicular to the first direction, and the second direction is a horizontal direction.
As an optimal technical scheme of the oil return ventilation structure of the cylinder block, the oil return channel comprises an upper oil return channel and a lower oil return channel which are arranged at intervals along the vertical direction, the upper oil return channel is arranged on the top end face, the lower oil return channel is arranged on the bottom end face, the top end of the upper oil return channel forms the top oil port, the bottom end of the upper oil return channel is communicated with the oil collecting cavity, the top end of the lower oil return channel is communicated with the oil collecting cavity, and the bottom end of the lower oil return channel forms the bottom oil port.
As a preferred technical scheme of the oil return ventilating structure of the cylinder block, the top oil port and the bottom oil port are arranged along the second direction in a staggered manner.
As an optimal technical scheme of the oil return ventilation structure of the cylinder block, the oil return ventilation structure of the cylinder block further comprises an auxiliary cavity extending along the second direction, the auxiliary cavity is arranged on the first side wall, the auxiliary cavity is communicated with the oil collecting cavity, and the top end of the lower oil return channel is communicated with the auxiliary cavity.
As a preferred technical scheme of the oil return ventilation structure of the cylinder block, the lower oil return channel comprises a plurality of lower oil distribution channels which are arranged at intervals along the first direction, the auxiliary cavity comprises a plurality of sub auxiliary cavities which are arranged at intervals along the first direction, each sub auxiliary cavity is communicated with the oil collection cavity, and the lower oil distribution channels are communicated with the sub auxiliary cavities in a one-to-one correspondence manner.
As a preferred technical scheme of the oil return ventilating structure of the cylinder block, the upper oil return channel comprises a plurality of upper oil distribution channels arranged at intervals along the first direction, and each upper oil distribution channel is communicated with the oil collecting cavity.
As a preferable mode of the cylinder block oil return ventilation structure, the bottom oil port is disposed flush with a mounting surface of the oil pan.
On the other hand, the utility model provides an engine, cylinder block oil return air-breather in including above-mentioned arbitrary scheme.
The utility model has the advantages that:
the utility model provides a cylinder block oil return air-breather structure and engine, this cylinder block oil return air-breather structure is including setting up oil collecting cavity, oil return way and the chamber of ventilating on the cylinder block, and the oil return way runs through the cylinder block along vertical direction, and the oil collecting cavity runs through the cylinder block along the first direction, and the first direction is the horizontal direction, and oil collecting cavity intercommunication oil return way just is located between top hydraulic fluid port and the bottom hydraulic fluid port, and the chamber of ventilating sets up in the top face of cylinder block along vertical direction, and ventilates the chamber and be configured to can communicate with oil collecting cavity. The oil return channel and the vent cavity extend along the vertical direction, so that the demoulding of a part for forming the oil return channel and the vent cavity is facilitated during die casting, and the oil return channel and the vent cavity can be directly formed by adopting aluminum alloy through a die casting process; the oil collecting cavity is arranged between the top oil port and the bottom oil port of the cylinder block, all engine oil which flows back from the cylinder cover flows into the oil collecting cavity, the flowing engine oil can be balanced through the oil collecting cavity, the uniform flow velocity of the engine oil flowing into the oil pan is ensured, the oil return effect can be optimized, and the oil collecting cavity can be applied to a supercharged engine; the oil collecting cavity and the oil return channel form a cavity structure which is staggered transversely and longitudinally, the structural strength and rigidity of the cylinder body are greatly improved, and the reliability of the engine can be obviously improved.
Drawings
Fig. 1 is a schematic structural diagram of a cylinder block in an embodiment of the present invention;
fig. 2 is a sectional view of a cylinder block in an embodiment of the present invention;
fig. 3 is a schematic structural diagram of an oil return ventilation structure of the cylinder block according to an embodiment of the present invention.
In the figure:
100. a cylinder block; 101. a top oil port; 102. a bottom oil port; 103. a first side wall;
1. an upper oil return channel; 11. an upper oil distribution channel;
2. an oil collecting cavity;
3. a lower oil return channel; 31. a lower oil distribution duct;
4. an auxiliary chamber; 41. dividing an auxiliary cavity;
5. a vent lumen;
6. and an oil-gas separation cavity.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Where the terms "first position" and "second position" are two different positions, and where a first feature is "over", "above" and "on" a second feature, it is intended that the first feature is directly over and obliquely above the second feature, or simply means 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 invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; 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 meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.
As shown in fig. 1 to 3, the present embodiment provides a cylinder block oil return ventilation structure, the cylinder block oil return ventilation structure includes an oil collection cavity 2 disposed on a cylinder block 100, an oil return passage and a ventilation cavity 5, the oil return passage penetrates through the cylinder block 100 along a vertical direction and forms a top oil port 101 on a top end surface of the cylinder block 100, and forms a bottom oil port 102 on a bottom end surface of the cylinder block 100, the oil collection cavity 2 penetrates through the cylinder block 100 along a first direction, the first direction is a horizontal direction, the oil collection cavity 2 communicates with the oil return passage and is located between the top oil port 101 and the bottom oil port 102, the top oil port 101 is used for communicating with the oil return port of the cylinder head, the bottom oil port 102 is used for communicating with an oil pan, the ventilation cavity 5 is disposed on the top end surface of the cylinder block 100 along. Here, the vertical direction in the present embodiment is the OZ direction in fig. 1, the first direction is the OX direction in fig. 1, and is the arrangement direction of the cylinders, and the second direction is the OY direction in fig. 1.
In the oil return ventilation structure of the cylinder block provided in the embodiment, on one hand, the oil return channel and the ventilation cavity 5 both extend in the vertical direction, and during die casting, the oil return channel and the ventilation cavity 5 are conveniently formed by demolding, so that the cylinder block 100 can be directly formed into the oil return channel and the ventilation cavity 5 by adopting an aluminum alloy through a die casting process. On the other hand, the oil collecting cavity 2 penetrates through the cylinder block 100 along the first direction and is located between the top oil port 101 and the bottom oil port 102 of the cylinder block 100, so that engine oil flowing back from the cylinder cover flows into the oil collecting cavity 2, the flowing-in engine oil can be balanced through the oil collecting cavity 2, the uniform flow rate of the engine oil flowing into the oil pan is ensured, the oil return effect can be optimized, and the oil collecting cavity can be applied to a supercharged engine. On the other hand, the oil collecting cavity 2 and the oil return channel form a cavity structure which is staggered transversely and longitudinally, so that the structural strength and rigidity of the cylinder block 100 are greatly improved, and the reliability of the engine can be obviously improved.
Optionally, the cylinder block oil return ventilation structure further includes an oil-gas separation cavity 6 disposed on the cylinder block 100, and the oil-gas separation cavity 6 communicates the oil collection cavity 2 and the ventilation cavity 5. The ventilation cavity 5 is integrated on the cylinder block 100, so that the gas in the crankcase can enter the cylinder head through the ventilation cavity 5 after passing through the oil-gas separation cavity 6, the pipelines of the crankcase ventilation system can be reduced, and the cost is further reduced. Specifically, in the present embodiment, the oil collecting chamber 2 is provided on the first side wall 103 of the cylinder block 100 in the second direction, which is perpendicular to the first direction, and which is the horizontal direction.
Optionally, the oil return channel includes an upper oil return channel 1 and a lower oil return channel 3 which are arranged at intervals along the vertical direction, the upper oil return channel 1 is arranged on the top end face, the lower oil return channel 3 is arranged on the bottom end face, a top oil port 101 is formed at the top end of the upper oil return channel 1, the bottom end of the upper oil return channel 1 is communicated with the oil collecting cavity 2, the top end of the lower oil return channel 3 is communicated with the oil collecting cavity 2, and a bottom oil port 102 is formed at the bottom end of the lower oil return channel 3. Preferably, the top port 101 and the bottom port 102 are arranged in a staggered manner in the second direction. The top oil port 101 and the bottom oil port 102 are arranged along the second direction in a staggered manner, so that the balance capability of the oil collecting cavity 2 on the engine oil flowing into the upper oil return channel 1 can be further improved. Further preferably, the cylinder block oil return ventilation structure further includes an auxiliary cavity 4 extending along the second direction, the auxiliary cavity 4 is disposed on the first side wall 103, the auxiliary cavity 4 is communicated with the oil collection cavity 2, and the top end of the lower oil return passage 3 is communicated with the auxiliary cavity 4. It should be noted that in other embodiments, the upper oil return channel 1 and the lower oil return channel 3 can be disposed in the same vertical plane.
In this embodiment, the lower oil return passage 3 includes a plurality of lower oil distribution passages 31 arranged at intervals along the first direction, the auxiliary chamber 4 includes a plurality of sub-auxiliary chambers 41 arranged at intervals along the first direction, each sub-auxiliary chamber 41 is communicated with the oil collecting chamber 2, and the plurality of lower oil distribution passages 31 are communicated with the plurality of sub-auxiliary chambers 41 in a one-to-one correspondence manner. Go up oil return gallery 1 and include a plurality of upper oil separating channel 11 that set up along first direction interval, each upper oil separating channel 11 all communicates with oil collecting cavity 2. The number of the upper oil distribution passage 11 and the lower oil distribution passage 31 can be equal or unequal, the aperture of the upper oil distribution passage 11 can be gradually reduced from top to bottom, and the aperture of the lower oil distribution passage 31 can be gradually increased from top to bottom, so that when the die-casting is facilitated, the part of the upper oil distribution passage 11 is formed and is demoulded from the upper side, and the part of the lower oil distribution passage 31 is formed and is demoulded from the lower side. The outline shapes of the upper oil distribution passage 11 and the lower oil distribution passage 31 can be set according to actual needs, and are not limited in this embodiment.
Optionally, the bottom oil port 102 is configured to be flush with the mounting face of the oil pan. By making the bottom port 102 flush with the mounting surface of the oil pan, the engine oil returning from the bottom port 102 can be directly stored in the oil pan, without directly colliding with the crankshaft and producing a large amount of oil mist, and the load of the oil-gas separation system can be reduced.
The embodiment also provides an engine, which comprises the cylinder block oil return ventilation structure in the scheme.
It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (10)
1. The cylinder block oil return ventilation structure is characterized by comprising an oil collecting cavity (2), an oil return channel and a ventilation cavity (5), wherein the oil return channel is arranged on a cylinder block (100), the oil return channel penetrates through the cylinder block (100) in the vertical direction and forms a top oil port (101) on the top end face of the cylinder block (100), a bottom oil port (102) is formed on the bottom end face of the cylinder block (100), the oil collecting cavity (2) penetrates through the cylinder block (100) in the first direction, the first direction is the horizontal direction, the oil collecting cavity (2) is communicated with the oil return channel and is positioned between the top oil port (101) and the bottom oil port (102), the top oil port (101) is communicated with an oil return port of a cylinder head, the bottom oil port (102) is communicated with an oil pan, the ventilation cavity (5) is arranged on the top end face of the cylinder block (100) in the vertical direction, and the ventilation cavity (5) is configured to be capable of communicating with the oil collecting cavity (2).
2. The cylinder block oil return vent structure according to claim 1, further comprising an oil-gas separation chamber (6) provided on the cylinder block (100), the oil-gas separation chamber (6) communicating the oil collection chamber (2) and the vent chamber (5).
3. The cylinder block oil return breather structure according to claim 2, wherein the oil collecting chamber (2) is provided on a first side wall (103) of the cylinder block (100) in a second direction, the second direction being perpendicular to the first direction, and the second direction being a horizontal direction.
4. The cylinder block oil return ventilation structure according to claim 3, wherein the oil return passage includes an upper oil return passage (1) and a lower oil return passage (3) that are vertically spaced, the upper oil return passage (1) is disposed on the top end surface, the lower oil return passage (3) is disposed on the bottom end surface, the top end of the upper oil return passage (1) forms the top oil port (101), the bottom end of the upper oil return passage (1) is communicated with the oil collection chamber (2), the top end of the lower oil return passage (3) is communicated with the oil collection chamber (2), and the bottom end of the lower oil return passage (3) forms the bottom oil port (102).
5. The cylinder block oil return breather structure of claim 4, wherein the top oil port (101) and the bottom oil port (102) are offset in the second direction.
6. The cylinder block oil return vent structure according to claim 5, further comprising an auxiliary chamber (4) extending in the second direction, the auxiliary chamber (4) being provided on the first side wall (103), the auxiliary chamber (4) being in communication with the oil collection chamber (2), and a top end of the lower oil return passage (3) being in communication with the auxiliary chamber (4).
7. The cylinder block oil return breather structure according to claim 6, wherein the lower oil return passage (3) includes a plurality of lower sub-oil passages (31) that are provided at intervals in the first direction, the auxiliary chamber (4) includes a plurality of sub-auxiliary chambers (41) that are provided at intervals in the first direction, each sub-auxiliary chamber (41) is communicated with the oil collection chamber (2), and the plurality of lower sub-oil passages (31) are communicated with the plurality of sub-auxiliary chambers (41) in a one-to-one correspondence.
8. The cylinder block oil return breather structure according to claim 4, wherein the upper oil return passage (1) includes a plurality of upper branch oil passages (11) that are provided at intervals in the first direction, and each of the upper branch oil passages (11) communicates with the oil collecting chamber (2).
9. The cylinder block oil return breather structure of claim 1, wherein the bottom oil port (102) is configured to be flush with a mounting surface of the oil pan.
10. An engine characterized by comprising the cylinder block oil return breather structure according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922256657.5U CN211202137U (en) | 2019-12-16 | 2019-12-16 | Cylinder block oil return ventilation structure and engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922256657.5U CN211202137U (en) | 2019-12-16 | 2019-12-16 | Cylinder block oil return ventilation structure and engine |
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| Publication Number | Publication Date |
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| CN211202137U true CN211202137U (en) | 2020-08-07 |
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| CN201922256657.5U Active CN211202137U (en) | 2019-12-16 | 2019-12-16 | Cylinder block oil return ventilation structure and engine |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112576400A (en) * | 2020-12-11 | 2021-03-30 | 中国北方发动机研究所(天津) | Horizontal engine body |
| CN114251185A (en) * | 2020-09-25 | 2022-03-29 | 深圳臻宇新能源动力科技有限公司 | Engine cylinder cover |
-
2019
- 2019-12-16 CN CN201922256657.5U patent/CN211202137U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114251185A (en) * | 2020-09-25 | 2022-03-29 | 深圳臻宇新能源动力科技有限公司 | Engine cylinder cover |
| CN112576400A (en) * | 2020-12-11 | 2021-03-30 | 中国北方发动机研究所(天津) | Horizontal engine body |
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