CN110685767A - Camshaft bearing seat - Google Patents
Camshaft bearing seat Download PDFInfo
- Publication number
- CN110685767A CN110685767A CN201911013709.4A CN201911013709A CN110685767A CN 110685767 A CN110685767 A CN 110685767A CN 201911013709 A CN201911013709 A CN 201911013709A CN 110685767 A CN110685767 A CN 110685767A
- Authority
- CN
- China
- Prior art keywords
- bearing seat
- cylinder cover
- oil duct
- bearing
- camshaft
- 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
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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
- F01M9/00—Lubrication means having pertinent characteristics not provided for in, or of interest apart from, groups F01M1/00 - F01M7/00
- F01M9/10—Lubrication of valve gear or auxiliaries
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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
- F01M9/00—Lubrication means having pertinent characteristics not provided for in, or of interest apart from, groups F01M1/00 - F01M7/00
- F01M9/10—Lubrication of valve gear or auxiliaries
- F01M9/102—Lubrication of valve gear or auxiliaries of camshaft bearings
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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
- F02F1/00—Cylinders; Cylinder heads
- F02F1/24—Cylinder heads
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Valve-Gear Or Valve Arrangements (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Abstract
The invention discloses a camshaft bearing seat, and aims to provide a camshaft bearing seat convenient to manufacture. The bearing seat comprises a bearing seat body positioned on the upper part of a cylinder cover during assembly; the upper end of the bearing block body is provided with two camshaft bearing holes; the bearing seat body is provided with a positioning hole and a bolt hole for connecting a cylinder cover; a lubricating oil groove is formed in the hole wall of the camshaft bearing hole, a transverse bearing seat oil duct is arranged in the bearing seat body and below the lubricating oil groove, and two throttling holes which are communicated downwards are formed in the bearing seat oil duct; the lower port part of the throttling hole corresponds to an oil duct of a cylinder cover on the cylinder cover; the bearing seat oil duct is provided with two upper oil holes which are respectively communicated with the two lubricating oil grooves; one end of the bearing seat oil duct is communicated with the bearing seat oil duct, and a plug is arranged at the end of the bearing seat oil duct; when the bearing seat body is assembled with the cylinder cover, the top surface of the bearing seat body is coplanar with the top surface of the cylinder cover. The invention has simple processing and low manufacturing cost.
Description
Technical Field
The invention relates to the technical field of engines, in particular to a camshaft bearing seat.
Background
Most of the existing camshaft bearing blocks of overhead camshaft engines adopt a vertical separation mode and are composed of an upper bearing cover and a lower bearing block. That is, a lower bearing seat is generally integrated on a cylinder head, and an upper bearing cover is fastened on the lower bearing seat by using bolts. For the camshaft bearing seat structure integrated with the cylinder cover, the design of a camshaft lubricating oil channel is difficult due to the fact that the bearing seat and the cylinder cover are large in size after integration, the cost for machining the lubricating oil channel is high, and the cylinder cover is difficult to cast. Meanwhile, the camshaft bearing seat structure can also affect the arrangement of the cylinder head bolts, sometimes the overlapping phenomenon of the bolt holes (such as the bolt holes for connecting the bearing cover) on the bearing seat and the positions of the cylinder head bolts can be caused, the length of the cylinder head is often required to be increased in order to prevent the overlapping problem of the bolt holes on the bearing seat and the positions of the cylinder head bolts, the overall weight and the length of the engine can be increased due to the increase of the length of the cylinder head, and the application range of the engine is further limited.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides a camshaft bearing block which is convenient to process and install and low in oil duct processing cost.
In order to solve the technical problems, the invention is realized by the following technical scheme:
a camshaft bearing seat is connected with a cylinder cover through a bolt and a positioning pin sleeve during assembly; the bearing seat body is positioned on the upper part of a cylinder cover during assembly; the upper end of the bearing block body is provided with two camshaft bearing holes; the bearing seat body is provided with a positioning hole and a bolt hole for connecting a cylinder cover; a lubricating oil groove is formed in the hole wall of the camshaft bearing hole, a transverse bearing seat oil duct is arranged in the bearing seat body and below the lubricating oil groove, and two throttling holes which are communicated downwards are formed in the bearing seat oil duct; the lower port part of the throttling hole corresponds to an oil duct of a cylinder cover on the cylinder cover; the bearing seat oil duct is provided with two upper oil holes which are respectively communicated with the two lubricating oil grooves; one end of the bearing seat oil duct is communicated with the bearing seat oil duct, and a plug is arranged at the end of the bearing seat oil duct; when the bearing seat body is assembled with the cylinder cover, the top surface of the bearing seat body is coplanar with the top surface of the cylinder cover.
Preferably, the number of the positioning holes on the bearing seat body is two.
Preferably, the number of the bolt holes on the bearing seat body is four.
Compared with the prior art, the invention has the following advantages:
(1) the camshaft bearing seat is mainly used for a first-gear bearing seat of a camshaft, the first-gear camshaft bearing seat and other-gear camshaft bearing seats are separately designed, namely the other-gear camshaft bearing seats are integrated on a cylinder cover. This bearing frame processing is simple, and casting defect appears rarely, so manufacturing cost is low, can realize the low-cost processing of lubricating-oil duct, can avoid the big not enough of original integrated form manufacturing difficulty again.
(2) The oil circuit system can provide lubrication for parts such as a variable valve timing system, a camshaft, a hydraulic tappet, a fuel pump and the like. Simultaneously, the cylinder cap bolt is located the below of this bearing frame body, through this kind of arrangement structure, can avoid the overlapping of cylinder cap bolt and the last bolt hole of camshaft bearing frame completely, then can effectively shorten the length of cylinder cap, and then shorten the length of whole engine.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic view of the present invention assembled with a cylinder head;
FIG. 2 is a schematic view of the lubrication circuit of FIG. 1;
in the figure, 1, a cylinder cover; 2. a bolt; 3. positioning a pin sleeve; 4. a bearing housing body; 5. a cylinder head bolt; 6. a lubricating oil groove; 7. a camshaft bearing bore; 8. an upper oil hole; 9. an orifice; 10. a cylinder head oil duct; 11. a bearing block oil passage; 12. an oil duct is arranged on the cylinder cover; 13. and (7) a plug.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive effort based on the embodiments of the present invention, are within the scope of the present invention. In the following description, for the purpose of clearly illustrating the structure and operation of the present invention, reference will be made to the accompanying drawings by way of directional terms, but terms such as "front", "rear", "left", "right", "up", "down", etc. should be construed as words of convenience and should not be construed as limiting terms.
The camshaft bearing block shown in fig. 1-2 is assembled by connecting a bolt 2 and a positioning pin sleeve 3 with a cylinder head 1; comprises a bearing seat body 4 positioned at the upper part of a cylinder cover 1 during assembly; the upper end of the bearing block body 4 is provided with two camshaft bearing holes 7; the bearing seat body 4 is provided with two positioning holes (not shown in the figure) for connecting the cylinder cover 1 and four bolt holes (not shown in the figure) for connecting the bolt sleeves 3 in a penetrating way; a lubricating oil groove 6 is formed in the hole wall of the camshaft bearing hole 7, a transverse bearing seat oil duct 11 is arranged in the bearing seat body 4 and below the lubricating oil groove 6, and two throttling holes 9 which penetrate downwards are formed in the bearing seat oil duct 11; the lower end opening part of the throttle hole 9 corresponds to a cylinder cover oil passage 10 on the cylinder cover 1; two oil feeding holes 8 which are respectively communicated with the two lubricating oil grooves 6 are formed in the bearing seat oil duct 11; one end of the bearing seat oil duct 11 is through and is provided with a plug 13; after the bearing seat body 4 is assembled with the cylinder cover 1, the top surface of the bearing seat body 4 is coplanar with the top surface of the cylinder cover 1.
When the bearing seat body 4 is assembled, the cylinder cover bolt 5 is screwed down, and then the bearing seat body 4 is fixed on the cylinder cover 1 by using the two positioning pin sleeves 3 and the four bolts 2. In operation, lubricating oil flows from the engine block into the cylinder head upper oil passage 12 and then into the bearing block oil passage 11. Lubricating oil enters the bearing seat oil duct 11 and then is divided into two paths, wherein one path of lubricating oil flows upwards through the upper oil hole 8 and then enters the lubricating oil groove 6 and the camshaft bearing hole 7 to provide lubrication for the camshaft and the variable valve timing system; the other path of the lubricating oil flows downwards through a throttling hole 9 to enter an oil duct 10 of a cylinder cover, and the lubricating oil is provided for parts such as a camshaft, a hydraulic tappet, a fuel pump and the like.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (3)
1. A camshaft bearing seat is connected with a cylinder cover through a bolt and a positioning pin sleeve during assembly; the method is characterized in that: the bearing seat body is positioned on the upper part of a cylinder cover during assembly; the upper end of the bearing block body is provided with two camshaft bearing holes; the bearing seat body is provided with a positioning hole and a bolt hole for connecting a cylinder cover; a lubricating oil groove is formed in the hole wall of the camshaft bearing hole, a transverse bearing seat oil duct is arranged in the bearing seat body and below the lubricating oil groove, and two throttling holes which are communicated downwards are formed in the bearing seat oil duct; the lower port part of the throttling hole corresponds to an oil duct of a cylinder cover on the cylinder cover; the bearing seat oil duct is provided with two upper oil holes which are respectively communicated with the two lubricating oil grooves; one end of the bearing seat oil duct is communicated with the bearing seat oil duct, and a plug is arranged at the end of the bearing seat oil duct; when the bearing seat body is assembled with the cylinder cover, the top surface of the bearing seat body is coplanar with the top surface of the cylinder cover.
2. The camshaft bearing support of claim 1, wherein: the bearing seat body is provided with two positioning holes.
3. A camshaft bearing support according to claim 1 or 2, wherein: the number of the bolt holes in the bearing seat body is four.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911013709.4A CN110685767A (en) | 2019-10-23 | 2019-10-23 | Camshaft bearing seat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911013709.4A CN110685767A (en) | 2019-10-23 | 2019-10-23 | Camshaft bearing seat |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110685767A true CN110685767A (en) | 2020-01-14 |
Family
ID=69113762
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911013709.4A Pending CN110685767A (en) | 2019-10-23 | 2019-10-23 | Camshaft bearing seat |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110685767A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111648834A (en) * | 2020-06-22 | 2020-09-11 | 东风商用车有限公司 | Camshaft seat assembly and bearing seat assembly group |
| CN112096537A (en) * | 2020-08-11 | 2020-12-18 | 东风汽车集团有限公司 | Integrated cylinder head cover and automobile engine |
-
2019
- 2019-10-23 CN CN201911013709.4A patent/CN110685767A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111648834A (en) * | 2020-06-22 | 2020-09-11 | 东风商用车有限公司 | Camshaft seat assembly and bearing seat assembly group |
| CN112096537A (en) * | 2020-08-11 | 2020-12-18 | 东风汽车集团有限公司 | Integrated cylinder head cover and automobile engine |
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