Engine cover and engine
By setting the first box body and the second box body structure in the oil and gas separation box of the engine cover, the surface area of the adsorbed engine oil is increased, and the design of the vertical plate, barrier bar and port is used to solve the problem of poor oil and gas separation in the prior art, achieving more efficient oil and gas separation, and avoiding the problem of excessive consumption of engine oil and oil.
Patent Information
- Application Number
- CN202421780787.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-26
- Publication Date
- 2025-04-15
- Estimated Expiration
- 2034-07-26
AI Technical Summary
The existing engine cover oil and gas separation device has poor separation effect, which leads to problems such as excessive oil consumption during operation of the engine.
An engine cover is designed, adopting the first box body and the second box body structure in the oil-gas separation box, increasing the surface area of the oil-gas separation box, and blocking the engine oil in the airflow through the arrangement of the vertical plate, barrier strip and port, and improving the oil-gas separation efficiency.
It achieves better oil and gas separation effect, avoids problems such as oil leakage, reduces oil consumption, and improves the working efficiency and environmental protection effect of the engine.
Smart Images
Figure CN222759864U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of vehicle engines, and in particular relates to an engine cover and an engine comprising the engine cover. Background Art
[0002] During the operation of the automobile engine, a large amount of exhaust gas and oil vapor will be generated, which will mix together to form an oil-gas mixture. If the oil-gas mixture is directly discharged into the atmosphere, it will not only cause environmental pollution, but also have an adverse effect on the operation of the engine. The cylinder head cover is located on the upper part of the engine and is connected to the engine. Most of the existing engine covers are integrated with an oil-gas separation device, which can not only discharge the exhaust gas in the cavity in time when the engine is running, but also prevent the oil in the cylinder head cover from leaking out, so that the engine can work better.
[0003] Specifically, when the engine is working, the gas pressure of the crankcase changes continuously with the up and down movement of the piston, so that the oil-gas mixture in the crankcase enters the cylinder head cover through the engine lubricating oil channel or the gap in the engine transmission system, and then passes through the oil-gas separation device and the air filter on the cylinder head cover in turn, and finally enters the engine combustion chamber for combustion. If the oil content in the mixed oil and gas is high, on the one hand, it will cause a large loss of oil in the engine crankcase, and on the other hand, the oil entering the combustion chamber will easily cause the engine exhaust emissions to exceed the standard due to incomplete combustion. That is, the oil-gas channel of the existing oil-gas separation device is relatively short, and the separation effect is not good. When the engine is working, it is easy to have problems such as oil leakage and excessive oil consumption. Utility Model Content
[0004] In view of this, in order to solve the problems in the prior art, the utility model provides an engine hood with an improved structure.
[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:
[0006] Sufficient structures can be arranged in a limited space to improve work efficiency.
[0007] An engine hood includes a hood body and a cover plate mounted on the hood body, a cavity for oil and gas circulation is formed between the hood body and the cover plate, an oil and gas separation box is provided on the cover plate, the oil and gas separation box is fixedly arranged on the top surface of the cover plate, the oil and gas separation box includes a vertical plate, a first box body and a second box body from one side to the other, an air inlet is provided on the vertical plate, a first cavity is provided in the first box body, a second cavity is provided in the second box body, the air inlet is communicated with the first cavity, the first cavity is communicated with the second cavity, and a baffle is provided in the first box body toward the air inlet. The cover plate also includes an air inlet, a first oil return channel, a second oil return channel and a third oil return channel, the oil and gas separation box is located between the first oil return channel and the second oil return channel, and the vertical plate is close to the first oil return channel. The air intake on the vertical plate includes a plurality of columns that penetrate the thickness direction of the vertical plate. Each column has a cavity that penetrates the length direction of the column for gas to enter the oil-gas separation box. Such a circular inlet setting can better keep large particles of oil out.
[0008] According to some preferred implementation aspects of the utility model, the first box body includes a side plate, the side plate is perpendicular to the cover plate, and the side of the side plate away from the vertical plate is fixedly connected to the side of the second box body close to the vertical plate; a notch is opened at the lower part of the side plate.
[0009] According to some preferred implementation aspects of the utility model, a plurality of the baffles are fixedly arranged on one side of the side plate close to the vertical plate, one end of the baffle is connected to the inner wall of the top of the first box body, and the other end of the baffle is flush with the top of the notch. The arrangement of the plurality of baffles can increase the surface area of the oil-gas separation box for adsorbing the engine oil, so as to block the engine oil in the airflow, thereby achieving better oil-gas separation efficiency.
[0010] According to some preferred implementation aspects of the utility model, a plurality of the baffles are arranged at intervals, and the width of each baffle gradually increases from one end close to the notch to the other end. Such an arrangement enables the airflow to flow forward from the end of the baffle close to the notch, thereby facilitating entry into the second cavity of the second box body.
[0011] According to some preferred implementation aspects of the utility model, the thickness direction of the baffle and the depth direction of the first cavity are parallel to the length direction of the cover plate, and the thickness of the baffle is smaller than the depth of the first cavity.
[0012] According to some preferred implementation aspects of the utility model, a plurality of openings are provided at intervals on the top of the second box body. Such a configuration enables a portion of the airflow that is blocked by hitting the inner wall of the second box body to flow out through the openings on the top, and the other portion to hit the transverse ribs between adjacent openings on the top of the second box body, thereby reducing the oil content in the airflow flowing out of the openings. In addition, the configuration of the openings can effectively re-divide the converged airflow into smaller airflows, thereby accelerating the gas flow rate, separating the oil at this stage, and greatly improving the adsorption efficiency.
[0013] According to some preferred implementation aspects of the utility model, the height of the vertical plate is greater than the height of the first box body, the height of the first box body is greater than the height of the second box body, and the bottom surface of the first box body is flush with the bottom surface of the second box body.
[0014] According to some preferred implementation aspects of the utility model, the oil-gas separation box also includes a first convex strip, a second convex strip, a third convex strip and a fourth convex strip, the first convex strip is located below the vertical plate, the second convex strip and the fourth convex strip are located together below the first box body and the second box body, and the third convex strip is located below the second box body; a first oil return port is provided on the first convex strip, and a second oil return port is provided on the third convex strip.
[0015] According to some preferred implementation aspects of the utility model, the cover plate is provided with a first fixing strip, a second fixing strip, a third fixing strip, a fourth fixing strip and a bending strip corresponding to the first convex strip, the second convex strip, the third convex strip and the fourth convex strip, respectively; the first fixing strip is provided with a first oil outlet corresponding to the first oil return port, the third fixing strip is provided with a second oil outlet corresponding to the second oil return port, and the first convex strip, the second convex strip, the third convex strip and the fourth convex strip are located in the area enclosed by the first fixing strip, the second fixing strip, the third fixing strip, the fourth fixing strip and the bending strip. The first oil return port and the first oil outlet are provided correspondingly, so that the oil droplets accumulated on the baffle can drip down to the bottom of the oil-gas separation box and enter the first oil return port, and flow out from the first oil outlet, so that the oil and gas are separated; the second oil return port and the second oil outlet are provided correspondingly, so that the oil droplets accumulated on the transverse ribs between the adjacent openings at the top of the second box body can drip down to the bottom of the oil-gas separation box and enter the second oil return port, and flow out from the second oil outlet, so that the oil and gas are separated again, and the oil-gas separation effect is improved.
[0016] The utility model also provides an engine comprising the engine cover as described above.
[0017] Compared with the prior art, the utility model is advantageous in that the engine hood cover of the utility model increases the surface area of the oil-gas separation box for adsorbing the engine oil by disposing the first box body and the second box body in the oil-gas separation box, so as to block the engine oil in the airflow, achieve a better oil-gas separation effect, and avoid oil blowby and the like. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.
[0019] Figure 1 This is a schematic diagram of the three-dimensional structure of the engine cover in the preferred embodiment of the utility model;
[0020] Figure 2 It is a schematic diagram of the cross-sectional structure of the engine cover in the preferred embodiment of the utility model;
[0021] Figure 3 This is a schematic diagram of the three-dimensional structure after the cover plate and the oil-gas separation box are installed in the preferred embodiment of the utility model;
[0022] Figure 4 This is a schematic diagram of the three-dimensional structure of the cover plate in the preferred embodiment of the utility model;
[0023] Figure 5 It is a schematic diagram of the three-dimensional structure of the oil-gas separation box in the preferred embodiment of the utility model from the first viewing angle;
[0024] Figure 6 It is a schematic diagram of the three-dimensional structure of the oil-gas separation box in the preferred embodiment of the utility model from a second viewing angle;
[0025] Figure 7 This is a schematic diagram of the cross-sectional structure of the oil-gas separation box in the preferred embodiment of the utility model;
[0026] Wherein, the accompanying drawings are marked as follows:
[0027] Cover body -1, baffle -11, cover plate -2, air inlet -21, first oil return channel -22, second oil return channel -23, third oil return channel -24, first fixing strip -25, first oil outlet -251, second fixing strip -26, third fixing strip -27, second oil outlet -271, fourth fixing strip -28, bending strip -29, cavity -3, oil-gas separation box -4, vertical plate -41, first box body -42, first cavity -421, side plate -422, notch -Q, second box body -43, second cavity -431, through port -432, baffle -44, first convex strip -45, first oil return port -451, second convex strip -46, third convex strip -47, second oil return port -471, fourth convex strip -48, column -49, cavity -491. DETAILED DESCRIPTION
[0028] In order to enable those skilled in the art to better understand the technical solution of the present invention, the following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solution in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.
[0029] The engine in this embodiment has Figures 1 to 7 The engine hood shown in the figure. The engine hood comprises a hood body 1 and a cover plate 2 mounted on the hood body 1, and a cavity 3 is formed between the hood body 1 and the cover plate 2 for the oil and gas generated by the engine to flow.
[0030] The cover plate 2 is provided with an air inlet 21, a first oil return channel 22, a second oil return channel 23, a third oil return channel 24 and an oil-gas separation box 4. The oil-gas separation box 4 is arranged between the first oil return channel 22 and the second oil return channel 23, and is used to block the oil in the oil gas generated by the engine and leak out through the first oil return channel 22 and the second oil return channel 23. The air inlet 21 is close to the first oil return channel 22, and the third oil return channel 24 is close to the second oil return channel 23. A plurality of baffles 11 are arranged on the inner wall of the cover body 1, which can preliminarily absorb the oil in the oil gas and leak out through the air inlet 21.
[0031] Furthermore, if Figure 2 and Figure 3As shown, the oil-gas separation box 4 is fixedly arranged on the top surface of the cover plate 2, and the oil-gas separation box 4 includes a vertical plate 41, a first box body 42 and a second box body 43 from one side to the other side, and the vertical plate 41 is close to the first oil return channel 22; the height of the vertical plate 41 is greater than the height of the first box body 42, the height of the first box body 42 is greater than the height of the second box body 43, and the bottom surface of the first box body 42 is flush with the bottom surface of the second box body 43. Figure 5 As shown, the side of the vertical plate 41 facing the air inlet 21 is inclined and gradually away from the baffle 11 from bottom to top, so as to better filter and return the oil. An air inlet is arranged on the vertical plate 41, and the air inlet includes a plurality of columns 49 penetrating the thickness direction of the vertical plate 41, and each column 49 has a cavity 491 penetrating the length direction of the column 49, for gas to enter the oil-gas separation box 4, and such a circular inlet can better keep large particles of oil out.
[0032] Specifically, Figure 6 and Figure 7 As shown, the first box body 42 has a first cavity 421, the second box body 43 has a second cavity 431, the air inlet is connected to the first cavity 421, and the first cavity 421 is connected to the second cavity 431. The first box body 42 has a side plate 422 on the side away from the vertical plate 41, the side plate 422 is perpendicular to the cover plate 2, and the side of the side plate 422 away from the vertical plate 41 is fixedly connected to the side of the second box body 43 close to the vertical plate 41; a notch Q is opened at the lower part of the side plate 422. A plurality of baffles 44 are fixedly arranged on the side of the side plate 422 close to the vertical plate 41 (the side facing the air inlet), and the plurality of baffles 44 are arranged at intervals, one end of the baffle 44 is connected to the inner wall at the top of the first box body 42, and the other end of the baffle 44 is flush with the top of the notch Q. The thickness direction of the baffle 44 and the depth direction of the first cavity 421 are parallel to the length direction of the cover plate 2, and the thickness of the baffle 44 is less than the depth of the first cavity 421. The provision of a plurality of baffles 44 can increase the surface area of the oil-gas separation box 4 for adsorbing the engine oil, so as to block the engine oil in the air flow, thereby achieving a better oil-gas separation efficiency.
[0033] The width of each baffle 44 gradually increases from one end close to the notch Q to the other end. This arrangement enables the airflow to flow forward from the end of the baffle 44 close to the notch Q to facilitate entering the second cavity 431 of the second box body 43.
[0034] Furthermore, a plurality of openings 432 are provided at intervals on the top of the second box body 43, which can effectively divide the converged airflow into smaller airflows, thereby accelerating the gas flow rate, separating the oil and liquid at this stage, and greatly improving the adsorption efficiency.
[0035] like Figure 6As shown, the bottom of the oil-gas separation box 4 also has a first convex strip 45, a second convex strip 46, a third convex strip 47 and a fourth convex strip 48. The first convex strip 45 is located below the vertical plate 41, the second convex strip 46 and the fourth convex strip 48 are located below the first box body 42 and the second box body 43, and the third convex strip 47 is located below the second box body 43; the first convex strip 45 is provided with a first oil return port 451, and the third convex strip 47 is provided with a second oil return port 471. Figure 4 As shown, the cover plate 2 is respectively provided with the first fixing strip 25, the second fixing strip 26, the third fixing strip 27, the fourth fixing strip 28 and the bending strip 29 corresponding to the first convex strip 45, the second convex strip 46, the third convex strip 47 and the fourth convex strip 48, and the shape of the area enclosed by the first convex strip 45, the second convex strip 46, the third convex strip 47 and the fourth convex strip 48 matches the shape of the area enclosed by the first fixing strip 25, the second fixing strip 26, the third convex strip 27, the fourth fixing strip 28 and the bending strip 29. During installation, the first convex strip 45, the second convex strip 46, the third convex strip 47 and the fourth convex strip 48 are located in the area enclosed by the first fixing strip 25, the second fixing strip 26, the third convex strip 27, the fourth fixing strip 28 and the bending strip 29.
[0036] In addition, the first fixed bar 25 is provided with a first oil outlet 251 corresponding to the first oil return port 451, so that the oil droplets accumulated on the baffle 44 can drip downward to the bottom of the oil-gas separation box 4 and enter the first oil return port 451, and flow out from the first oil outlet 251, so that the oil and gas are separated. The third fixed bar 27 is provided with a second oil outlet 271 corresponding to the second oil return port 471, so that the oil droplets accumulated on the transverse ribs between the adjacent through ports 432 at the top of the second box body 43 can drip downward to the bottom of the oil-gas separation box 4 and enter the second oil return port 471, and flow out from the second oil outlet 271, so that the oil and gas are separated again, and the oil-gas separation effect is improved.
[0037] The working process of the engine cover structure in this embodiment is briefly described below:
[0038] After the oil and gas generated by the engine enter through the air inlet 21 of the cover plate 2, they are first adsorbed by the baffle 11 on the cover body 1. The oil adsorbed on the baffle 11 will flow back into the cylinder from the air inlet 21. The gas passing through the baffle 11 comes to the oil and gas separation box 4 and enters the first cavity 421 of the first box body 42 from the air inlet of the oil and gas separation box 4. In the process of continuing to move forward, it will hit multiple baffles 44, so that fine oil particles will be adsorbed on the baffles 44. When the adsorbed oil droplets gather to a certain extent, they will drip downward to the bottom and then enter the first oil return port 451. The gas that continues to move forward in the first cavity 421 can only enter the second cavity 431 of the second box body 43 downward through the notch Q, and part of the airflow hits the inner wall of the second box body 43, and part of the airflow is divided into smaller airflows by multiple ports 432 and flows out upward, and finally discharged through the PCV valve assembly. The oil in the airflow that flows upward and is adsorbed on the transverse ribs between adjacent through-ports 432 accumulates to a certain extent and then drips downward and enters the second oil return port 471 .
[0039] The above embodiments are only for illustrating the technical concept and features of the utility model, and their purpose is to enable people familiar with this technology to understand the content of the utility model and implement it accordingly. They cannot be used to limit the protection scope of the utility model. All equivalent changes or modifications made according to the spirit of the utility model should be included in the protection scope of the utility model.
Claims
1. An engine hood, comprising a hood body and a cover plate mounted on the hood body, a cavity for oil and gas circulation is formed between the hood body and the cover plate, an oil and gas separation box is provided on the cover plate, and the oil and gas separation box is fixedly arranged on the top surface of the cover plate, characterized in that: The oil-gas separation box includes a vertical plate, a first box body and a second box body in sequence from one side to the other side, an air inlet portion is arranged on the vertical plate, a first cavity is arranged in the first box body, a second cavity is arranged in the second box body, the air inlet portion is communicated with the first cavity, the first cavity is communicated with the second cavity, and a baffle is arranged in the first box body toward the air inlet portion.
2. The engine cover according to claim 1, characterized in that: The first box body comprises a side plate, the side plate is perpendicular to the cover plate, a side of the side plate away from the vertical plate is fixedly connected to a side of the second box body close to the vertical plate; a notch is formed at the lower part of the side plate.
3. The engine cover according to claim 2, characterized in that: A plurality of the baffles are fixedly arranged on one side of the side plate close to the vertical plate, one end of the baffle is connected to the inner wall of the top of the first box body, and the other end of the baffle is flush with the top of the notch.
4. The engine cover according to claim 3, characterized in that: The plurality of baffles are arranged at intervals, and the width of each baffle increases gradually from one end close to the notch to the other end.
5. The engine cover according to claim 3, characterized in that: The thickness direction of the baffle and the depth direction of the first cavity are both parallel to the length direction of the cover plate, and the thickness of the baffle is smaller than the depth of the first cavity.
6. The engine hood according to any one of claims 1 to 5, characterized in that: A plurality of through openings are spaced apart on the top of the second box body.
7. The engine hood according to any one of claims 1 to 5, characterized in that: The height of the vertical plate is greater than the height of the first box body, the height of the first box body is greater than the height of the second box body, and the bottom surface of the first box body is flush with the bottom surface of the second box body.
8. The engine cover according to claim 1, characterized in that: The oil-gas separation box also includes a first convex strip, a second convex strip, a third convex strip and a fourth convex strip, the first convex strip is located below the vertical plate, the second convex strip and the fourth convex strip are located together below the first box body and the second box body, and the third convex strip is located below the second box body; a first oil return port is provided on the first convex strip, and a second oil return port is provided on the third convex strip.
9. The engine cover according to claim 8, characterized in that: The cover plate is respectively provided with a first fixing strip, a second fixing strip, a third fixing strip, a fourth fixing strip and a bending strip corresponding to the first convex strip, the second convex strip, the third convex strip and the fourth convex strip, a first oil outlet is opened on the first fixing strip corresponding to the first oil return port, a second oil outlet is opened on the third fixing strip corresponding to the second oil return port, and the first convex strip, the second convex strip, the third convex strip and the fourth convex strip are located in an area enclosed by the first fixing strip, the second fixing strip, the third fixing strip, the fourth fixing strip and the bending strip.
10. An engine comprising the engine cover according to any one of claims 1 to 9.