CN112128011B - Engine cylinder cover shield - Google Patents
Engine cylinder cover shield Download PDFInfo
- Publication number
- CN112128011B CN112128011B CN202010974009.8A CN202010974009A CN112128011B CN 112128011 B CN112128011 B CN 112128011B CN 202010974009 A CN202010974009 A CN 202010974009A CN 112128011 B CN112128011 B CN 112128011B
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- Prior art keywords
- oil
- engine
- space
- shield body
- engine oil
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F7/00—Casings, e.g. crankcases or frames
- F02F7/0065—Shape of casings for other machine parts and purposes, e.g. utilisation purposes, safety
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M11/00—Component parts, details or accessories, not provided for in, or of interest apart from, groups F01M1/00 - F01M9/00
- F01M11/04—Filling or draining lubricant of or from machines or engines
- F01M11/0458—Lubricant filling and draining
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Abstract
The invention discloses an engine cylinder cover shield, comprising: the engine oil injection device comprises a shield body, wherein an accommodating space is arranged in the shield body, and the top of the shield body is provided with an engine oil injection port communicated with the accommodating space; one end of the baffle is fixedly connected with the inner wall of the shield body, and the baffle divides the accommodating space into a first space and a second space which are mutually isolated; a gap is formed between the other end of the baffle and the inner wall of the shield body, and the gap is far away from the engine oil filling port. The baffle is arranged, and the end of the baffle, which is far away from the engine oil filling opening, is provided with the notch, so that the engine oil can not splash along with the rotation of the timing chain or the camshaft and adhere to and gather at the engine oil filling opening part in the running process of the engine, and the oil filling at the maintenance time of the whole vehicle is not influenced, so that the problem of engine oil emulsification at the engine oil filling opening part of the cylinder cover shield is solved.
Description
Technical Field
The invention relates to the technical field of engine cylinder covers, in particular to an engine cylinder cover shield.
Background
For satisfying engine lightweight design requirement, the cylinder cap guard shield is mostly the injection molding, inside integrated oil-gas separation device to arrange the machine oil filler in suitable position, filling machine oil when being convenient for auto repair maintenance. Under normal conditions, the cylinder cover protective cover is assembled with the engine oil inlet cover to seal the crankcase. When the engine oil needs to be filled, the engine oil can be filled by unscrewing the engine oil filling port cover. To facilitate oil filling, the oil fill port is typically in direct communication with the crankcase. Such a structure may cause an oil emulsification problem.
When the engine runs, high-pressure combustible mixed gas and burnt gas in the combustion chamber can more or less leak into a crankcase through a gap between the piston group and the cylinder, and blow-by gas is caused. The blow-by gas is composed of unburned hydrocarbon, steam, exhaust gas, and the like. Because the cylinder cover shield is an injection molding part, the heat transfer is slow, and the temperature rise of the engine oil filling port part is slow. When the automobile is driven for a short distance, because the temperature of the engine oil filling port of the cylinder cover shield is lower, water vapor in blow-by gas is easy to condense and form water when meeting the engine oil filling port. Along with the operation of the engine, the engine oil can splash to the engine oil filling opening part through the rotation of the timing chain or the camshaft, and is continuously attached and accumulated. The oil mixes with the condensed water to form an oil emulsion.
Disclosure of Invention
The invention aims to provide an engine cylinder cover shield to solve the technical problem of 'engine oil emulsification' at an engine oil filling port of the cylinder cover shield in the prior art.
The invention provides an engine cylinder head shield, comprising:
the engine oil injection device comprises a shield body, wherein an accommodating space is arranged in the shield body, and the top of the shield body is provided with an engine oil injection port communicated with the accommodating space;
one end of the baffle is fixedly connected with the inner wall of the shield body, and the baffle divides the accommodating space into a first space and a second space which are mutually isolated; a gap is formed between the other end of the baffle and the inner wall of the shield body, and the gap is far away from the engine oil filling port.
Preferably, the baffle plate includes a bottom plate and a side plate extending along an outer contour surface of the bottom plate, the side plate forms an opening at the notch, and an included angle of not less than 3 ° is formed between the bottom plate and a horizontal plane.
In the engine head cover shield as described above, preferably, the end surface of the bottom plate is provided with a protruding plate protruding toward the notch.
Preferably, the bottom plate is concavely provided with an oil return groove, the oil return groove extends along the flowing direction of the engine oil, and the end part of the oil return groove is communicated with the notch.
Preferably, a plurality of grilles are convexly arranged on one side, close to the notch, of the top wall of the shield body, the grilles extend at equal intervals along the engine oil filling direction, the height of each grille is half of the height of the first space, and the distance between every two adjacent grilles is 6-10 mm.
Preferably, a plurality of partition plates are arranged in the first space, top ends of the partition plates are fixedly connected with the top wall of the shield body, bottom ends of the partition plates are fixedly connected with the bottom plate, one side ends of the partition plates are fixedly connected with the inner wall of the shield body, and the other side ends of the partition plates extend through a central line of the first space; the extending direction of the partition plates and the flowing direction of the engine oil are arranged in an acute angle mode, and the partition plates are arranged in a staggered mode at equal intervals along the conveying direction of the engine oil.
Preferably, a sealing plate is arranged on one side, close to the notch, of the top wall of the shield body, the sealing plate is as high as the first space, an oil storage groove is concavely arranged on the bottom plate, the oil storage groove is as deep as the first space, and the oil storage groove is located right below the sealing plate.
In the engine cylinder head protecting cover, preferably, a sealing member is disposed at the notch, a plurality of oil holes are disposed on the base plate, and an umbrella valve is disposed in each of the oil holes.
Compared with the prior art, the engine oil injection device has the advantages that the baffle is arranged, and the end, far away from the engine oil injection port, of the baffle is provided with the notch, so that the engine oil cannot splash along with the rotation of the timing chain or the camshaft and is attached to and gathered at the engine oil injection port in the operation process of the engine, and the oil injection at the maintenance time of the whole vehicle is not influenced, so that the problem of engine oil emulsification at the engine oil injection port of the cylinder cover shield is solved.
Drawings
FIG. 1 is a cross-sectional view of a first embodiment of the present invention;
FIG. 2 is an isometric view of a baffle plate in accordance with a first embodiment of the invention;
FIG. 3 is an isometric view of a baffle plate in a second embodiment of the invention;
FIG. 4 is a cross-sectional view of a third embodiment of the present invention;
FIG. 5 is a top view of a third embodiment of the present invention;
FIG. 6 is a top view of a fourth embodiment of the present invention;
FIG. 7 is an isometric view of a baffle plate in a fourth embodiment of the present invention;
fig. 8 is a partial sectional view of a fifth embodiment of the present invention.
Description of reference numerals: 1-shield body, 2-engine oil filling port, 3-baffle, 4-first space, 5-second space, 6-notch, 7-bottom plate, 8-side plate, 9-convex plate, 10-oil return groove, 11-grid, 12-partition plate, 13-close plate, 14-oil storage groove, 15-oil hole and 16-umbrella valve.
Detailed Description
The embodiments described below with reference to the drawings are illustrative only and should not be construed as limiting the invention.
As shown in fig. 1 and 2, an embodiment of the present invention provides an engine head shroud including:
the engine oil filling device comprises a protective cover body 1, wherein a containing space is arranged in the protective cover body 1 to contain parts such as a piston group and an air cylinder, an engine oil filling opening 2 communicated with the containing space is formed in the top of the protective cover body 1, and in order to facilitate engine oil filling, the engine oil filling opening 2 is directly communicated with a crankcase, and when engine oil needs to be filled, an engine oil filling opening cover is unscrewed to fill the engine oil.
One end of the baffle 3 is fixedly connected with the inner wall of the shield body 1, the baffle 3 divides the accommodating space into a first space 4 and a second space 5 which are mutually isolated, the first space 4 is communicated with the engine oil filling port 2, and a piston group, a cylinder and other parts are positioned in the second space 5; a gap 6 is formed between the other end of the baffle 3 and the inner wall of the shield body 1, and the gap 6 is far away from the engine oil filling opening 2. After being added from the engine oil filling opening 2, the engine oil flows into the first space 4 and flows into the second space 5 from the notch 6 under the guidance of the baffle 3, so that the engine oil can not splash and adhere to and gather at the engine oil filling opening 2 along with the rotation of a timing chain, a camshaft and the like in the operation process of an engine, and the oil filling time during the maintenance of the whole vehicle is not influenced.
The first embodiment is as follows:
as shown in fig. 1 and 2, in the present embodiment, the baffle 3 includes a bottom plate 7 and a side plate 8 extending along an outer contour surface of the bottom plate 7, the side plate 8 forms an opening at the notch 6, so that the oil flows out from the opening, and an included angle of not less than 3 ° is formed between the bottom plate 7 and a horizontal plane. The angle of the bottom plate 7 can be set according to the space structure and the outlet area, and only needs to be not less than 3 degrees, so that oil flows to the crankcase during maintenance, and splashed oil drops can flow back to the crankcase.
Further, in this embodiment, in the first space 4, a plurality of grids 11 are convexly provided on the top wall of the shroud body 1 on one side close to the gap 6, the grids 11 extend at equal intervals along the engine oil filling direction, the grids 11 can be molded integrally with the cylinder head shroud, and can also be welded to the cylinder head shroud, the grids 11 are generally designed to be half of the height of the first space 4, the distance is 6-10mm, the size can be adjusted according to the space structure, the filling of the engine oil and the blocking of oil droplets are not affected, and even if part of splashed engine oil can enter the gap 6, the part of splashed engine oil can completely impact the grids 11 of the shroud body 1 in the first space due to the effect of centrifugal force, and the part of the splashed engine oil slowly gathers and drips on the bottom plate 7, and finally flows back to the crankcase.
Furthermore, the end surface of the bottom plate 7 is convexly provided with a convex plate 9 facing the notch 6, and the convex plate 9 is positioned right above the timing chain, so that the splashed engine oil is blocked as far as possible while the outlet area is reduced.
Example two:
as shown in fig. 3, due to the space arrangement, the flow cross-sectional area of the oil filling channel is insufficient, and the inclination of the bottom plate 7 is insufficient, in this embodiment, an oil return groove 10 is concavely provided on the bottom plate 7, an included angle of 7 ° exists between the bottom and the horizontal plane, the axial direction of the oil return groove 10 extends along the oil flowing direction, and the end of the oil return groove 10 is communicated with the notch 6. The oil return groove 10 increases the flow cross section of the channel, is more beneficial to oil flowing to the crankcase during maintenance and is also beneficial to splashed oil drops flowing back to the crankcase. The opening of the oil return groove 10 is arranged as little as possible in the area above the rotary element. Although the oil return grooves 10 may allow more oil droplets to enter the outlet, they are blocked by the grill 11.
Welding ribs are arranged on the side plates 8 of the baffle plate 3, and a sealed first space 4 is formed between the side plates and the shield body 1.
Example three:
as shown in fig. 4 and 5, further, a plurality of partition plates 12 are disposed in the first space 4, top ends of the partition plates 12 are fixedly connected with the top wall of the shield body 1, bottom ends of the partition plates 12 are fixedly connected with the bottom plate 7, one side ends of the partition plates 12 are fixedly connected with the inner wall of the shield body 1, and the other side ends of the partition plates 12 extend through a center line of the first space 4; the extending direction of the partition plates 12 and the flowing direction of the engine oil are arranged in an acute angle, and the plurality of partition plates 12 are arranged in a staggered mode at equal intervals along the conveying direction of the engine oil. The partition plate 12 can be connected with the cylinder cover shield and the baffle plate 3 through injection molding or welding. The partition 12 needs to completely enclose an area of half of the first space, and the distance between the two partitions 12 is not less than half of the width of the first space. If the space allows, it is best to arrange three partition plates 12, not only can effectively prevent the oil droplets from entering the oil filling channel, but also can not influence the oil filling during maintenance. The partition 12 is disposed at an acute angle to the direction of flow of the injected oil, or at a perpendicular angle to the direction of flow of the oil. The splashed oil, even if it can enter the outlet, can only hit the grating and slowly accumulate back to the crankcase.
Example four:
as shown in fig. 6 and 7, a sealing plate 13 is provided on the top wall of the shroud body 1 on a side close to the notch 6, the sealing plate 13 has a height equal to that of the first space 4, an oil reservoir 14 is recessed in the bottom plate 7, the oil reservoir 14 has a depth equal to that of the first space 4, and the oil reservoir 14 is located directly below the sealing plate 13.
A sealing plate 13 is arranged in the first space 4, the sealing plate 13 and the cylinder cover shield are molded together, and the height of the sealing plate 13 is the same as that of the first space 4. An oil storage groove 14 is formed in the baffle plate 3 corresponding to the lower area of the sealing plate 13, the depth of the oil storage groove 14 is the same as the height of the first space 4, the cross section area of oil circulation is ensured, and the filled oil can smoothly flow to a crankcase in a production line and maintenance. Even if the engine is running, the splashed oil can enter the outlet, but only impact the sealing plate 13, slowly drops and gathers in the oil storage tank 14, and cannot reach the oil filling port 2. When the oil storage tank 14 is full of engine oil, the engine oil contacts the closing plate 13 to close the area of the engine oil filling opening 2, so that oil drops and water vapor are completely prevented from entering the area of the engine oil filling opening 2, and the problem of engine oil emulsification is avoided.
Example five:
as shown in fig. 8, further, a closing member is arranged at the gap 6, the closing member is used for closing the gap 6, so that the baffle plate 3 completely closes the oil filling opening 2, a plurality of oil holes 15 are arranged on the bottom plate 7, an umbrella valve 16 is arranged in each oil hole 15, 5 or a plurality of umbrella valves 16 are assembled on the baffle plate 3, and a plurality of oil holes 15 are arranged in the area covered by the umbrella valves 16. Normally, the umbrella valve 16 closes the oil hole 15, and the engine oil splashed by the operation of the engine cannot enter the region of the engine oil filling port 2. When the whole vehicle is maintained, under the action of the gravity and pressure of the filled engine oil, the umbrella valve 16 is opened, and the filled engine oil can smoothly flow into the crankcase through the oil hole 15.
The construction, features and functions of the present invention are described in detail in the embodiments illustrated in the drawings, which are only preferred embodiments of the present invention, but the present invention is not limited by the drawings, and all equivalent embodiments modified or changed according to the idea of the present invention should fall within the protection scope of the present invention without departing from the spirit of the present invention covered by the description and the drawings.
Claims (6)
1. An engine cylinder head shroud, comprising:
the engine oil injection device comprises a shield body, wherein an accommodating space is arranged in the shield body, and the top of the shield body is provided with an engine oil injection port communicated with the accommodating space;
one end of the baffle is fixedly connected with the inner wall of the shield body, and the baffle divides the accommodating space into a first space and a second space which are mutually isolated; a gap is formed between the other end of the baffle and the inner wall of the shield body, and the gap is far away from the engine oil filling port;
the baffle plate comprises a bottom plate and side plates extending along the outer contour surface of the bottom plate, openings are formed in the notches of the side plates, and an included angle which is not less than 3 degrees is formed between the bottom plate and the horizontal plane;
a plurality of grids are convexly arranged on one side, close to the gap, of the top wall of the shield body, and extend at equal intervals along the engine oil filling direction;
the height of the grids is half of that of the first space, and the distance between two adjacent grids is 6-10 mm;
one side that is close to the breach on the roof of guard shield body is equipped with the shrouding, the height of shrouding with the height in first space is the same, the concave oil storage tank that is equipped with on the bottom plate, the degree of depth in oil storage tank with the height in first space is the same, the oil storage tank is located under the shrouding.
2. An engine head cover according to claim 1, wherein the end face of the bottom plate is provided with a protruding plate protruding toward the notch.
3. The engine cylinder head shield according to claim 1, wherein the bottom plate is recessed with an oil return groove extending along a flow direction of the engine oil, and an end of the oil return groove communicates with the notch.
4. The engine head shield according to claim 1, wherein a plurality of partition plates are disposed in the first space, top ends of the partition plates are fixedly connected to the top wall of the shield body, bottom ends of the partition plates are fixedly connected to the bottom plate, one side ends of the partition plates are fixedly connected to the inner wall of the shield body, and the other side ends of the partition plates extend through a center line of the first space.
5. The engine head cover according to claim 4, wherein the partition plates extend at an acute angle to the direction of flow of the oil, and a plurality of the partition plates are staggered at equal intervals in the direction of delivery of the oil.
6. The engine head cover according to claim 1, wherein a closing member is provided at the notch, a plurality of oil holes are provided in the base plate, and an umbrella valve is provided in each of the oil holes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010974009.8A CN112128011B (en) | 2020-09-16 | 2020-09-16 | Engine cylinder cover shield |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010974009.8A CN112128011B (en) | 2020-09-16 | 2020-09-16 | Engine cylinder cover shield |
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| Publication Number | Publication Date |
|---|---|
| CN112128011A CN112128011A (en) | 2020-12-25 |
| CN112128011B true CN112128011B (en) | 2022-01-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010974009.8A Active CN112128011B (en) | 2020-09-16 | 2020-09-16 | Engine cylinder cover shield |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115539172A (en) * | 2022-09-28 | 2022-12-30 | 神通科技集团股份有限公司 | Drainage structure |
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| Title |
|---|
| 汽车润滑油加注门的优化与设计;丁海峰;《机械工程师》;20141010;全文 * |
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| Publication number | Publication date |
|---|---|
| CN112128011A (en) | 2020-12-25 |
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