CN113323767A - Engine camshaft shroud and camshaft - Google Patents
Engine camshaft shroud and camshaft Download PDFInfo
- Publication number
- CN113323767A CN113323767A CN202110802027.2A CN202110802027A CN113323767A CN 113323767 A CN113323767 A CN 113323767A CN 202110802027 A CN202110802027 A CN 202110802027A CN 113323767 A CN113323767 A CN 113323767A
- Authority
- CN
- China
- Prior art keywords
- camshaft
- cover
- mounting surface
- cap
- bearing
- 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.)
- Pending
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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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
- F01L1/02—Valve drive
- F01L1/04—Valve drive by means of cams, camshafts, cam discs, eccentrics or the like
- F01L1/047—Camshafts
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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
- F01M13/00—Crankcase ventilating or breathing
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
- Valve-Gear Or Valve Arrangements (AREA)
Abstract
The invention relates to an engine camshaft cover and a camshaft, comprising an upper camshaft cover and a lower camshaft cover, wherein the upper camshaft cover and the lower camshaft cover are combined to form a camshaft hole for mounting the camshaft, and the upper camshaft cover is mounted on a cylinder cover of an engine; the upper cover of the camshaft comprises an upper cover upper mounting surface and an upper cover lower mounting surface; the upper cover lower mounting surface comprises a camshaft lower cover mounting surface and a cylinder cover mounting surface, and the camshaft lower cover comprises a front-end camshaft bearing cover, various camshaft bearing covers and a reinforcing structure connected with the camshaft bearing covers. The camshaft shroud has realized high integration, modularization, reduces and sends out spare part quantity, promotes the installation convenience of camshaft and camshaft shroud, separates camshaft hole and cylinder cap simultaneously for the cylinder cap processing becomes simple.
Description
Technical Field
The invention belongs to the technical field of engines, and particularly relates to an engine camshaft cover cap and a camshaft.
Background
With the increasing competition of the automobile industry, the design of the engine continuously reduces the cost and improves the efficiency in an integrated and modularized mode. The existing camshaft installation mode is mainly that a camshaft is installed on a cylinder cover firstly, then installation is carried out respectively through each gear camshaft cover, and each gear camshaft cover is also provided with a positioning structure, and meanwhile, sequence marks need to be marked on the camshaft cover, so that the number of parts is large, and assembly is complex.
In the prior art, each cam shaft cover is integrated into a large cam shaft cover cap to reduce the number of parts, but in the machining process, the cam shaft holes need to be assembled and machined after the cam shaft cover caps and the cylinder cover are installed and matched, and the complexity of machining the cylinder cover is caused.
Disclosure of Invention
The invention aims to provide an engine camshaft cover and a camshaft, and aims to solve the problems that the engine camshaft cover in the prior art is large in number of parts and complex in assembly.
In order to realize the purpose, the invention is realized by the following technical scheme:
an engine camshaft cover comprises an upper camshaft cover and a lower camshaft cover, wherein the upper camshaft cover and the lower camshaft cover are combined to form a camshaft hole for mounting a camshaft, and the upper camshaft cover is mounted on a cylinder cover of an engine;
the camshaft upper cover comprises an upper cover upper mounting surface and an upper cover lower mounting surface; a camshaft position sensor mounting seat, an oil-gas separator mounting seat and an ignition coil mounting seat are integrated on the upper mounting surface of the upper cover;
the lower mounting surface of the upper cover comprises a lower camshaft cover mounting surface and a cylinder cover mounting surface, and the lower camshaft cover mounting surface and the cylinder cover mounting surface are respectively provided with at least one group of positioning structures; the mounting surface of the lower cover cap of the camshaft consists of bearing seats of various gears of the camshaft;
the lower cover cap of the camshaft comprises a front camshaft bearing cap, camshaft bearing caps of all gears and a reinforcing structure connected with the camshaft bearing caps of all gears.
Further, the oil-gas separator mounting seat comprises two hollow structures and two cavity structures, and the two hollow structures are communicated with the camshaft cover chamber; in the two cavity structures, one cavity structure is connected with the crankshaft vent pipe through an external steel pipe, and the other cavity structure is connected with the auxiliary vent hole.
Furthermore, a high-pressure oil pump mounting seat is integrated on the mounting surface of the upper cover cap.
Furthermore, the camshaft semicircle orifice is arranged on the camshaft bearing seat.
Furthermore, the front end camshaft bearing cover is provided with an oil path leading to the front end camshaft bearing, the oil path leads to the upper mounting surface of the lower camshaft cover through an oil hole connected and communicated with the cylinder cover and is divided into two oil paths by the upper mounting surface, and the two oil paths respectively flow to a front end air inlet camshaft bearing hole and an exhaust side camshaft bearing hole.
Furthermore, the reinforcing structure comprises two reinforcing ribs connected with the intake side camshaft bearing cover and two reinforcing ribs connected with the exhaust side camshaft bearing cover; and the height and the width of two strengthening ribs of connecting the side camshaft bearing cap of admitting air are all inequality, and the height and the width of two strengthening ribs of connecting the side camshaft bearing cap of exhausting are all inequality.
A camshaft is installed in any one of the camshaft holes, the camshaft is a hollow camshaft, a plurality of drill holes are formed in the front end face shaft neck of the camshaft and communicated with the hollow hole of the camshaft, and the drill holes are communicated with an oil way of a lower cover cap of the camshaft.
Furthermore, at least one drill hole communicated with the hollow hole of the camshaft is arranged on the other journal of the camshaft.
The invention has the beneficial effects that:
the invention provides an engine camshaft cover cap which comprises an upper camshaft cover cap and a lower camshaft cover cap, wherein the upper camshaft cover cap and the lower camshaft cover cap are combined to form a camshaft hole, and the upper camshaft cover cap, the lower camshaft cover cap and a camshaft form a module and are fixedly arranged on a cylinder cover through an upper camshaft cover cap bolt hole. Meanwhile, the camshaft upper cover is further integrated on an oil separator mounting seat, a camshaft signal sensor mounting seat and an optional high-pressure oil pump mounting seat. The camshaft shroud has realized high integration, modularization, reduces and sends out spare part quantity, promotes the installation convenience of camshaft and camshaft shroud, separates camshaft hole and cylinder cap simultaneously for the cylinder cap processing becomes simple.
Drawings
FIG. 1 is an exploded view of an engine camshaft cover and camshaft of the present invention;
FIG. 2 is a schematic view of a camshaft upper cover upper mounting surface structure;
FIG. 3 is a schematic view of a camshaft upper cover lower mounting surface structure;
FIG. 4 is a schematic view of a camshaft lower cover structure;
fig. 5 is an X-X sectional view of fig. 4.
Description of the reference numerals
11. The camshaft comprises an upper camshaft cover, 12, a lower camshaft cover, 13, a camshaft, 111, a position sensor mounting seat, 112, an oil separator mounting seat, 113, a high-pressure oil pump mounting seat, 114, an ignition coil mounting seat, 115, an auxiliary vent hole, 116, a main vent hole, 1121, a first hollowed-out structure, 112, a second hollowed-out structure, 1123, a first cavity, 1124, a second cavity, 117, a mounting surface with the lower camshaft cover, 118, a mounting surface with a cylinder cover, 1171, a lower camshaft boss positioning structure, 1172, a camshaft thrust surface, 1181, a cylinder cover positioning structure, 1182, an auxiliary vent hole, 121, a front-end camshaft cover, 1211 a front-end camshaft cover lubricating oil way, 122, a camshaft cover, 123, an air inlet side camshaft cover reinforcing rib, 124, an exhaust side camshaft cover reinforcing rib, 125 and a positioning pin hole seat.
Detailed Description
The technical solutions of the present invention are described in detail below by examples, and the following examples are only exemplary and can be used only for explaining and explaining the technical solutions of the present invention, but not construed as limiting the technical solutions of the present invention.
As shown in fig. 1, the present invention provides an engine camshaft cover comprising an upper camshaft cover 11 and a lower camshaft cover 12. The camshaft upper cover cap and the camshaft lower cover cap of the application are both formed by die-casting aluminum. The lower camshaft cover cap is fixed on the upper camshaft cover cap, the lower camshaft cover cap is fixed on the cylinder cover through the upper camshaft cover cap, and the lower camshaft cover cap and the upper camshaft cover cap are fixed to form a camshaft hole.
Fig. 2 shows the camshaft upper cover mounting surface, where 111 is the camshaft position sensor mounting seat, 112 is the oil separator mounting seat, 113 is the high-pressure oil pump mounting seat, 114 is the ignition coil mounting seat, 115 is the auxiliary air vent, and 116 is the main air vent. 1121 is a first hollow structure of an oil separator mounting seat, 1122 is a second hollow structure of the oil separator mounting seat, 1123 is a first cavity of the oil separator mounting seat, and 1124 is a second cavity of the oil separator. 1121, 1122 are connected to the camshaft chamber, i.e., the crankcase, and the oil separator in the camshaft chamber can be directly fed to the oil separator for separation. 1123 is communicated with the crankcase ventilation pipe via an external steel pipe to realize the gas supply to the crankcase. 1124, the secondary air holes are communicated with the main air holes, the main air holes are communicated with the four secondary air holes, and the secondary air holes and the main air holes are blocked by end faces, so that the gas separated by the oil separator can be connected to an air inlet channel and then enters the cylinder for combustion. Because these air flue equipartitions are covered on the camshaft upper shield, can utilize the heat that gives off in the engine working process to heat it, can effectively prevent the easy problem of freezing of external hose in winter cold weather.
The upper cover of the camshaft also comprises a lower mounting surface of the upper cover, and the lower mounting surface of the upper cover comprises a mounting surface of the lower cover of the camshaft and a mounting surface of a cylinder cover. Wherein, the mounting surface of the lower cover cap of the camshaft and the mounting surface of the cylinder cover are respectively provided with at least one group of positioning structures. The mounting surface of the lower cover cap of the camshaft consists of bearing seats of various gears of the camshaft. The semi-circular hole of the camshaft is arranged on the camshaft bearing seat.
Fig. 3 shows the camshaft upper cover lower mounting surface, where 117 is the camshaft upper cover mounting surface and 118 is the cylinder head mounting surface. 1171, a lower camshaft cover is provided with a corresponding positioning pin hole, as shown in fig. 3, to ensure the installation accuracy of the lower camshaft cover. 1172 is a camshaft thrust surface corresponding to the camshaft thrust groove to reduce the play of the camshaft. 1181 is a cylinder cover positioning structure, as shown, a positioning pin structure. 1182 is four auxiliary air holes, which are used to introduce the separated gas into the air passage and further into the cylinder for combustion.
The lower cover cap of the camshaft is provided with a front camshaft bearing cap, other camshaft bearing caps of various gears and a reinforcing structure for connecting the camshaft bearing caps of various gears. The front end camshaft bearing cover is also provided with an oil path communicated to the front end camshaft bearing hole, the oil path is communicated to the upper mounting surface of the lower camshaft cover through an oil hole connected and communicated with the cylinder cover and is divided into two oil paths by the upper mounting surface, and the two oil paths respectively flow to the front end intake camshaft bearing hole and the exhaust side camshaft bearing hole.
As shown in fig. 4 and 5, the lower cover of the camshaft is shown, wherein 121 is the front end camshaft cover, 1211 is the lubrication oil path of the front end camshaft cover, 122 is the camshaft cover, 123 is the inlet side camshaft cover reinforcing rib, 124 is the exhaust side camshaft cover reinforcing rib, and 125 is the positioning pin hole seat.
The reinforcing structure comprises two reinforcing ribs connected with an intake side camshaft bearing cover and two reinforcing ribs connected with an exhaust side camshaft bearing cover; and the height and the width of two strengthening ribs of connecting the side camshaft bearing cap of admitting air are all inequality, and the height and the width of two strengthening ribs of connecting the side camshaft bearing cap of exhausting are all inequality.
As shown in fig. 5, the reinforcing structure includes two reinforcing ribs connected to the intake side camshaft bearing cap and two reinforcing ribs connected to the exhaust side camshaft bearing cap, where the height and width of one of the reinforcing ribs connected to the intake side camshaft bearing cap are a and b, respectively, and then a < b, and the height and width of the other reinforcing rib are c and d, respectively, and then c > d; one of the reinforcing ribs for connecting the exhaust camshaft bearing cover is g and h in height and width respectively, so that g is less than h, and the other reinforcing rib is e and f in height and width respectively, so that e is greater than f. The reinforcing ribs with different heights and widths are adopted, so that the strength of the lower cover cap of the camshaft can be greatly improved.
The invention also provides a camshaft, as shown in figure 1, the camshaft 13 is a hollow camshaft, the front end face journal of the camshaft is also provided with a plurality of drilled holes, and the drilled holes are communicated with the hollow holes of the camshaft. The camshaft is arranged on the camshaft cover, wherein the front end journal drilling of the camshaft is communicated with the oil circuit of the lower camshaft cover. The other shaft journals of the camshaft also have at least one bore hole which is communicated with the hollow hole of the camshaft. Lubricating oil enters the hollow hole of the camshaft through the oil circuit of the front end journal of the lower camshaft cover cap and then enters other journals, so that the lubrication of the camshaft journals is realized.
Although the present application has been described with reference to a few embodiments, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the application as defined by the appended claims.
Claims (8)
1. The engine camshaft cover is characterized by comprising an upper camshaft cover and a lower camshaft cover, wherein the upper camshaft cover and the lower camshaft cover are combined to form a camshaft hole for mounting a camshaft, and the upper camshaft cover is mounted on a cylinder cover of an engine;
the camshaft upper cover comprises an upper cover upper mounting surface and an upper cover lower mounting surface; a camshaft position sensor mounting seat, an oil-gas separator mounting seat and an ignition coil mounting seat are integrated on the upper mounting surface of the upper cover;
the lower mounting surface of the upper cover comprises a lower camshaft cover mounting surface and a cylinder cover mounting surface, and the lower camshaft cover mounting surface and the cylinder cover mounting surface are respectively provided with at least one group of positioning structures; the mounting surface of the lower cover cap of the camshaft consists of bearing seats of various gears of the camshaft;
the lower cover cap of the camshaft comprises a front camshaft bearing cap, camshaft bearing caps of all gears and a reinforcing structure connected with the camshaft bearing caps of all gears.
2. The engine camshaft cover of claim 1, wherein the oil-gas separator mount includes two hollowed-out structures and two cavity structures, both hollowed-out structures opening into the camshaft cover chamber; in the two cavity structures, one cavity structure is connected with the crankshaft vent pipe through an external steel pipe, and the other cavity structure is connected with the auxiliary vent hole.
3. The engine camshaft cover of claim 1 wherein a high pressure oil pump mount is further integrated into the upper cover mounting surface.
4. The engine camshaft cover of claim 1 wherein the camshaft half bore is disposed on a camshaft bearing seat.
5. The engine camshaft cover cap as claimed in claim 1, wherein the front camshaft bearing cap is provided with an oil passage leading to the front camshaft bearing, the oil passage leading to the upper mounting surface of the camshaft lower cover cap from an oil hole communicating with the cylinder head and divided into two oil passages by the upper mounting surface, respectively flowing to the front intake camshaft bearing hole and the exhaust side camshaft bearing hole.
6. The engine camshaft cover cap of claim 1, wherein the reinforcing structure comprises two reinforcing ribs connecting the intake side camshaft bearing cap, two reinforcing ribs connecting the exhaust side camshaft bearing cap; and the height and the width of two strengthening ribs of connecting the side camshaft bearing cap of admitting air are all inequality, and the height and the width of two strengthening ribs of connecting the side camshaft bearing cap of exhausting are all inequality.
7. A camshaft mounted in the camshaft bore of any one of claims 1 to 6, wherein the camshaft is hollow, and a plurality of bores are provided at the front end journal of the camshaft, the bores communicating with the hollow bore of the camshaft, and the bores communicating with the camshaft lower cover oil passage.
8. A camshaft as claimed in claim 7, wherein at least one bore hole is provided in the other journal of the camshaft which communicates with the hollow bore of the camshaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110802027.2A CN113323767A (en) | 2021-07-15 | 2021-07-15 | Engine camshaft shroud and camshaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110802027.2A CN113323767A (en) | 2021-07-15 | 2021-07-15 | Engine camshaft shroud and camshaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113323767A true CN113323767A (en) | 2021-08-31 |
Family
ID=77426402
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110802027.2A Pending CN113323767A (en) | 2021-07-15 | 2021-07-15 | Engine camshaft shroud and camshaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113323767A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114623017A (en) * | 2022-02-25 | 2022-06-14 | 中国第一汽车股份有限公司 | Integrated camshaft bearing cover assembly and engine with same |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003314238A (en) * | 2002-04-17 | 2003-11-06 | Nissan Motor Co Ltd | Camshaft lubricating device |
| CN2921300Y (en) * | 2006-06-27 | 2007-07-11 | 奇瑞汽车有限公司 | Vehicle engine camshaft lubricating structure |
| CN201165883Y (en) * | 2007-12-27 | 2008-12-17 | 奇瑞汽车股份有限公司 | First bearing cap of engine cam axle |
| CN205064016U (en) * | 2015-10-29 | 2016-03-02 | 安徽江淮汽车股份有限公司 | Cam bearing cover of engine |
| CN205101056U (en) * | 2015-11-20 | 2016-03-23 | 上海汽车集团股份有限公司 | Camshaft bearing lid and car |
| CN106014526A (en) * | 2015-03-30 | 2016-10-12 | 丰田自动车株式会社 | Cam cap |
| US20190203659A1 (en) * | 2016-08-05 | 2019-07-04 | Thyssenkrupp Presta Teccenter Ag | Cylinder head cover module and method for the production thereof |
| CN112324584A (en) * | 2020-11-30 | 2021-02-05 | 安徽江淮汽车集团股份有限公司 | Engine camshaft shroud and engine |
-
2021
- 2021-07-15 CN CN202110802027.2A patent/CN113323767A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003314238A (en) * | 2002-04-17 | 2003-11-06 | Nissan Motor Co Ltd | Camshaft lubricating device |
| CN2921300Y (en) * | 2006-06-27 | 2007-07-11 | 奇瑞汽车有限公司 | Vehicle engine camshaft lubricating structure |
| CN201165883Y (en) * | 2007-12-27 | 2008-12-17 | 奇瑞汽车股份有限公司 | First bearing cap of engine cam axle |
| CN106014526A (en) * | 2015-03-30 | 2016-10-12 | 丰田自动车株式会社 | Cam cap |
| CN205064016U (en) * | 2015-10-29 | 2016-03-02 | 安徽江淮汽车股份有限公司 | Cam bearing cover of engine |
| CN205101056U (en) * | 2015-11-20 | 2016-03-23 | 上海汽车集团股份有限公司 | Camshaft bearing lid and car |
| US20190203659A1 (en) * | 2016-08-05 | 2019-07-04 | Thyssenkrupp Presta Teccenter Ag | Cylinder head cover module and method for the production thereof |
| CN112324584A (en) * | 2020-11-30 | 2021-02-05 | 安徽江淮汽车集团股份有限公司 | Engine camshaft shroud and engine |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114623017A (en) * | 2022-02-25 | 2022-06-14 | 中国第一汽车股份有限公司 | Integrated camshaft bearing cover assembly and engine with same |
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| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information |
Address after: No.669 Shixin Road, economic development zone, Feixi County, Hefei City, Anhui Province Applicant after: ANHUI JIANGHUAI AUTOMOBILE GROUP Corp.,Ltd. Address before: 230601 No. 669 Shixin Road, Taohua Industrial Park, Hefei City, Anhui Province Applicant before: ANHUI JIANGHUAI AUTOMOBILE GROUP Corp.,Ltd. |
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| CB02 | Change of applicant information | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210831 |
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| RJ01 | Rejection of invention patent application after publication |