CN106930858B - Engine upper cover - Google Patents
Engine upper cover Download PDFInfo
- Publication number
- CN106930858B CN106930858B CN201710264204.XA CN201710264204A CN106930858B CN 106930858 B CN106930858 B CN 106930858B CN 201710264204 A CN201710264204 A CN 201710264204A CN 106930858 B CN106930858 B CN 106930858B
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- CN
- China
- Prior art keywords
- upper cover
- camshaft
- cover body
- oil
- hole
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 238000000926 separation method Methods 0.000 claims abstract description 22
- 238000005259 measurement Methods 0.000 claims abstract description 3
- 230000003014 reinforcing effect Effects 0.000 claims description 4
- 238000009434 installation Methods 0.000 abstract description 13
- 239000000446 fuel Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 230000009191 jumping Effects 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
Images
Classifications
-
- 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
- F02F7/0068—Adaptations for other accessories
-
- 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
- F02F7/0073—Adaptations for fitting the engine, e.g. front-plates or bell-housings
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Abstract
The invention relates to an upper cover of an engine, which comprises an upper cover body, wherein two transverse camshaft holes are formed in the upper cover body, a camshaft extension boss is arranged on one side, close to a pulley chamber, of each camshaft hole, the camshaft extension boss extends out of the upper cover body, a convex thrust surface is arranged at the position, close to the top end, of each camshaft hole, a timing hole is formed in the outer side of each camshaft hole in the front-back direction, a camshaft speed measurement sensor mounting hole is formed in the left end of the rear part of the upper surface of the upper cover body, an air inlet hole of an oil-gas separation device and an oil return hole of the oil-gas separation device are arranged in the left section of the rear part of the upper surface of the upper cover body in a left-right mode, and an oil-gas separation labyrinth plate is arranged in the upper cover body below the air inlet hole of the oil-gas separation device and the oil return hole of the oil-gas separation device. The engine upper cover has the advantages of compact structure, convenience in installation, good safety and long service life.
Description
Technical Field
The invention relates to an engine upper cover.
Background
Traditional engine includes the cylinder cap at cylinder body, cylinder body top and the upper cover at cylinder cap top, and camshaft and other essential element all set up in the cylinder cap, and the upper cover mainly plays and shelters from the effect, because the cylinder cap structure is complicated, and the heat dissipation is not good, leads to traditional engine to have a great deal of defect. Thus, in view of the arrangement of the camshaft and some components on the upper cover, although the engine structure is improved, there are still many disadvantages:
1. in winter, some vehicles can be frozen due to cold weather, and then some vehicle owners can water the engine with hot water, so that the engine can be started quickly. In the past, because a gap is formed at the contact position of an engine and a belt wheel chamber, water flows into the belt wheel chamber, so that the rotation of a belt wheel is influenced, and the engine is burnt.
2. For a conventional diesel engine, the camshaft is on the cylinder head (1 or 2). Because the upper cover structure is comparatively compact, 2 tile covers and bolt fastening about the general camshaft need the cooperation when the installation accomplish, it is comparatively inconvenient when the installation, and can't ensure that camshaft installation angle is correct, still have the axial float, reduced the reliability, influenced life.
3. The traditional engine cylinder cover air inlet is provided with a plurality of flange surfaces which are respectively connected with the air inlet branch pipes, so that the structural complexity is increased.
4. The fuel injector of a traditional engine is fixed on a cylinder cover. Because the cylinder cap structure is comparatively complicated, it is comparatively inconvenient during the installation.
5. The traditional engine has a separate air inlet pipe and is not arranged on the upper cover.
6. No oil-gas separation device is arranged on an upper cover of a traditional engine, so that the whole cylinder cover is complex.
Disclosure of Invention
The invention aims to overcome the defects and provide the upper cover of the engine, which has the advantages of compact structure, convenient installation, good safety and long service life.
The purpose of the invention is realized as follows:
an upper cover of an engine comprises an upper cover body, wherein two transverse camshaft holes are formed in the upper cover body, a camshaft extension boss is arranged on one side, close to a belt wheel chamber, of each camshaft hole and extends out of the upper cover body, a plurality of oil supply holes are formed in the bottom surface of the upper cover body and correspond to the two camshaft holes, surface chutes of the oil supply holes are communicated with a cylinder body, a convex thrust surface is arranged at the position, close to the top end, of each camshaft hole, a timing hole is formed in the outer side of each of the two camshaft holes in the front-back direction inwards, a plurality of reinforcing ribs are arranged in the middle of the upper surface of the upper cover body, an air passage temperature sensor mounting hole is formed in the front of the upper surface of the upper cover body, a plurality of pressing plate mounting counter bores are formed in the position, between the two camshaft holes, a camshaft speed measuring sensor mounting hole is formed in the left end of the rear portion of the upper surface of the upper cover body, the left section of the rear part of the upper surface of the upper cover body is provided with an oil-gas separation device air inlet and an oil-gas separation device oil return hole which are arranged from left to right, an oil-gas separation labyrinth plate is arranged in the upper cover body below the oil-gas separation device air inlet and the oil-gas separation device oil return hole, and four oil sprayer fixing frames are arranged in the middle of the lower surface of the upper cover body.
The lower surface of upper cover body still is provided with upper cover air inlet and upper cover gas outlet, and upper cover air inlet and upper cover gas outlet communicate each other, and the upper cover air inlet has one, and the upper cover gas outlet has eight, and all has the passageway to communicate each other between per two upper cover gas outlets.
The lower surface of the upper cover body is also provided with a fixed mounting hole and a positioning pin hole at corresponding positions.
Compared with the prior art, the invention has the beneficial effects that:
1. because the camshaft extends the setting of boss, the camshaft extends the boss and stretches into the belt pulley room when the installation, has eliminated the clearance, can prevent rivers from flowing into from the clearance, and the belt pulley room is the engine normal operating and safe and reliable's important assurance.
2. With camshaft direct mount on the upper cover, practiced thrift the space, also reduced the upper cover installation degree of difficulty, insert the pin and cooperate with the camshaft mounting hole from the hole in right time when installing the camshaft, ensure that camshaft installation angle is correct, consequently can't guarantee the normal safe handling of engine, because the setting of thrust surface has reduced the axial float.
3. Because the upper cover structure is more compact, the flange surface of the air inlet is directly acted on the upper cover, the utilization rate of the air is improved, the space is saved, and the installation steps are also reduced.
4. The fuel injector fixing frame is placed on the upper cover, so that the space is saved, the installation is convenient, and the weight of the upper cover is also reduced
5. The air passages are all integrated to act on the upper cover, so that gas is utilized more timely and fully, the weight of the upper cover is reduced, and the complexity of the engine is reduced.
6. Two oil-gas separation holes are additionally arranged on the upper cover for installing the oil-gas separation device, so that the space of the upper cover is saved, and the upper cover is more fully utilized.
7. The air flue is integrated, so that the air input is increased, the gas is fully combusted, the pollutant emission is reduced, and the energy is saved and the environment is protected.
Therefore, the upper cover of the engine has the advantages of compact structure, convenience in installation, good safety, long service life, energy conservation and emission reduction.
Drawings
Fig. 1 is a perspective view of an engine upper cover of the present invention.
Fig. 2 is a plan view of the engine top cover of the present invention.
Fig. 3 is a bottom view of the engine top cover of the present invention.
Fig. 4 is a front view of the engine top cover of the present invention.
Fig. 5 is a rear view of the engine top cover of the present invention.
Fig. 6 is a left side view of the engine top cover of the present invention.
Fig. 7 is a right side view of the engine top cover of the present invention.
Fig. 8 is a sectional view a-a of fig. 6.
Fig. 9 is a perspective view of fig. 8.
Wherein:
the oil-gas separation device comprises an upper cover body 1, a camshaft hole 2, a camshaft extension boss 3, an oil supply hole 4, a thrust surface 5, a timing hole 6, a reinforcing rib 7, an air passage temperature sensor mounting hole 8, a pressing plate mounting counter bore 9, a camshaft speed measurement sensor mounting hole 10, an oil-gas separation device air inlet 11, an oil-gas separation device oil return hole 12, an oil-gas separation labyrinth plate 13, a fuel injector fixing frame 14, an upper cover air inlet 15, an upper cover air outlet 16, a fixing mounting hole 17 and a positioning pin hole 18.
Detailed Description
Referring to fig. 1-9, the invention relates to an engine upper cover, which comprises an upper cover body 1, wherein two transverse camshaft holes 2 are arranged on the upper cover body 1, a camshaft extension boss 3 is arranged on one side of the camshaft holes 2 close to a pulley chamber, and the camshaft extension boss 3 extends out of the upper cover body 1.
The bottom surface of the upper cover body 1 is provided with a plurality of oil supply holes 4 corresponding to the two camshaft holes 2, preferably, each camshaft hole 2 corresponds to four oil supply holes 4 which are uniformly distributed, and the inclined grooves on the surfaces of the oil supply holes 4 are communicated with the cylinder body, so that oil can be discharged from the oil supply holes to achieve a lubricating effect when the camshaft rotates, friction of the camshaft during operation is reduced, normal operation of the camshaft is guaranteed, and the service life of the camshaft is prolonged. Meanwhile, the camshaft is arranged on the upper cover, so that the weight of the cylinder cover is reduced, and the space is saved.
A convex thrust surface 5 is arranged at the position, close to the top end, of each camshaft hole 2, and is matched with a clamp spring to prevent the camshaft from axially jumping when the camshaft is installed.
And a timing hole 6 is respectively and inwardly arranged at the outer sides of the two camshaft holes 2 in the front and back directions, and a pin inserted into the timing hole 6 is matched with a camshaft mounting hole to ensure that the mounting angle of the camshaft is correct.
In addition, the middle part of the upper surface of the upper cover body 1 is provided with a plurality of reinforcing ribs 7, the front part of the upper surface of the upper cover body 1 is provided with an air flue temperature sensor mounting hole 8, a position of the upper surface between the two cam shaft holes 2 is provided with a plurality of pressing plate mounting counter bores 9, the left end of the rear part of the upper surface of the upper cover body 1 is provided with a cam shaft speed measuring sensor mounting hole 10, the left section of the rear part of the upper surface of the upper cover body 1 is provided with an air-oil separating device air inlet 11 and an air-oil separating device oil return hole 12 which are arranged from left to right, an air-oil separating labyrinth plate 13 is arranged in the upper cover body 1 below the air inlet 11 and the air-oil separating device oil return hole 12, and the air-oil separating labyrinth plate 13 enables oil to flow in a circuitous manner, so that the length of a heat exchange channel is increased.
The middle part of the lower surface of the upper cover body 1 is provided with four oil sprayer fixing frames 14, the four newly-added oil sprayer fixing frames are integrated on the upper cover, then the oil sprayer is installed on the fixing frames, a specific oil sprayer pressing plate is fixedly installed as shown in the figure, and then the pressing plate is fixed with the upper cover through bolts, so that the whole device is fixed, the oil sprayers are centralized together, the installation and management are convenient, the weight of a cylinder cover is lightened, and the space is saved.
The lower surface of the upper cover body 1 is further provided with an upper cover air inlet 15 and an upper cover air outlet 16, the upper cover air inlet 15 is communicated with the upper cover air outlet 16, the lower surface of the upper cover body 1 is further provided with a fixing mounting hole 17 and a positioning pin hole 18 at corresponding positions, and the fixing mounting hole 17 is used for being connected with a cylinder body.
One upper cover air inlet 15 is provided, eight upper cover air outlets 16 are provided, and every two upper cover air outlets 16 are communicated with each other through a channel. The gas enters from the upper cover gas inlet 15 and then flows out from the eight upper cover gas outlets 16, respectively, and further flows into the interior of the upper cover. The gas is utilized to the maximum extent and more fully, the loss of the gas is reduced, and the weight of the upper cover is also reduced.
The upper cover gas channel structure design improves the air inlet resistance, improves the air input, is more favorable for the mixing of mixed gas, improves the exhaust emission requirement, and meets the emission of the fifth and sixth countries. Is more environment-friendly and cleaner.
Claims (1)
1. An upper cover of an engine is characterized by comprising an upper cover body (1), wherein two transverse camshaft holes (2) are formed in the upper cover body (1), a camshaft extension boss (3) is arranged on one side, close to a pulley chamber, of each camshaft hole (2), the camshaft extension boss (3) extends out of the upper cover body (1), a plurality of oil supply holes (4) are formed in the bottom surface of the upper cover body (1) and correspond to the two camshaft holes (2), surface chutes of the oil supply holes (4) are communicated with a cylinder body, a convex thrust surface (5) is arranged at the position, close to the top end, of each camshaft hole (2), a timing hole (6) is formed in each of the outer sides of the two camshaft holes (2) in the front-back direction, a plurality of reinforcing ribs (7) are arranged in the middle of the upper surface of the upper cover body (1), and an air passage temperature sensor mounting hole (8) is formed in the front of the upper surface of the upper cover body (1), a plurality of pressing plate mounting counter bores (9) are formed in the position, located between the two camshaft holes (2), of the upper surface, a camshaft speed measurement sensor mounting hole (10) is formed in the left end of the rear portion of the upper surface of the upper cover body (1), an oil-gas separation device air inlet hole (11) and an oil-gas separation device oil return hole (12) are formed in the left section of the rear portion of the upper surface of the upper cover body (1) and are arranged left and right, an oil-gas separation labyrinth plate (13) is arranged in the upper cover body (1) below the oil-gas separation device air inlet hole (11) and the oil-gas separation device oil return hole (12), and four oil injector fixing frames (14) are arranged in the middle of the lower surface of the upper cover body (1);
the lower surface of the upper cover body (1) is also provided with an upper cover air inlet (15) and an upper cover air outlet (16), the upper cover air inlet (15) and the upper cover air outlet (16) are communicated with each other, one upper cover air inlet (15) is provided, eight upper cover air outlets (16) are provided, and every two upper cover air outlets (16) are communicated with each other through a channel;
the lower surface of the upper cover body (1) is also provided with a fixed mounting hole (17) and a positioning pin hole (18) at corresponding positions.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710264204.XA CN106930858B (en) | 2017-04-21 | 2017-04-21 | Engine upper cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710264204.XA CN106930858B (en) | 2017-04-21 | 2017-04-21 | Engine upper cover |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106930858A CN106930858A (en) | 2017-07-07 |
| CN106930858B true CN106930858B (en) | 2022-09-13 |
Family
ID=59437879
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710264204.XA Active CN106930858B (en) | 2017-04-21 | 2017-04-21 | Engine upper cover |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106930858B (en) |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1974126B1 (en) * | 2006-01-19 | 2011-08-17 | Toyota Jidosha Kabushiki Kaisha | Camshaft support structure for internal combustion engine |
| JP2007192102A (en) * | 2006-01-19 | 2007-08-02 | Toyota Motor Corp | Method for manufacturing camshaft support structure of internal combustion engine and camshaft support structure of internal combustion engine |
| JP5330050B2 (en) * | 2009-03-26 | 2013-10-30 | 本田技研工業株式会社 | 4-stroke cycle internal combustion engine |
| CN202707178U (en) * | 2012-06-20 | 2013-01-30 | 三一重工股份有限公司 | High integration cylinder head cover and engine |
| US9810176B2 (en) * | 2014-12-19 | 2017-11-07 | Ford Global Technologies, Llc | Unitary composite cam cover and carrier and assembly method |
| CN204851469U (en) * | 2015-06-15 | 2015-12-09 | 华晨汽车集团控股有限公司 | Engine sprocket chamber cap |
| CN105114201B (en) * | 2015-07-31 | 2017-11-14 | 奇瑞汽车股份有限公司 | A kind of diesel engine integrated form camshaft bearing cap assembly |
| CN206889122U (en) * | 2017-04-21 | 2018-01-16 | 江阴中玮动力机械有限公司 | Covered on engine |
-
2017
- 2017-04-21 CN CN201710264204.XA patent/CN106930858B/en active Active
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| Publication number | Publication date |
|---|---|
| CN106930858A (en) | 2017-07-07 |
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