CN211174257U - Distribution direct-drive type middle-mounted VVT oil way structure - Google Patents
Distribution direct-drive type middle-mounted VVT oil way structure Download PDFInfo
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- CN211174257U CN211174257U CN201922025649.XU CN201922025649U CN211174257U CN 211174257 U CN211174257 U CN 211174257U CN 201922025649 U CN201922025649 U CN 201922025649U CN 211174257 U CN211174257 U CN 211174257U
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- oil
- main journal
- vvt
- camshaft
- inner cavity
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- 239000003921 oil Substances 0.000 claims abstract description 87
- 239000010687 lubricating oil Substances 0.000 claims abstract description 17
- 238000004891 communication Methods 0.000 claims description 10
- 238000005461 lubrication Methods 0.000 abstract description 4
- 239000000446 fuel Substances 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 239000010705 motor oil Substances 0.000 description 1
- 230000004043 responsiveness Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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Abstract
The utility model discloses a distribution is directly driven and is put VVT oil circuit structure in formula, including being used for guiding the lubricating oil that comes from the cylinder cap oil feed way respectively to the first main bearing cap of the first intercommunication oil circuit that sets up in the camshaft in first main journal inner chamber and the valve chamber shroud and being used for guiding the lubricating oil from first main journal inner chamber to the valve body bolt of putting VVT in, set up in the camshaft and be used for receiving the second main journal inner chamber that comes from the lubricating oil of first intercommunication oil circuit and separate the jam of first main journal inner chamber and second main journal inner chamber. The utility model discloses a put VVT oil circuit structure in distribution direct drive formula will put VVT oil circuit and camshaft main journal lubrication oil circuit separately design in, and the fuel feeding oil pressure chamber of putting VVT in can not receive the lubricated reposition of redundant personnel influence of camshaft main journal and lead to the oil pressure undulant, avoids causing to put VVT performance undulant.
Description
Technical Field
The utility model belongs to the technical field of the engine, specifically speaking, the utility model relates to a distribution is directly driven and is put VVT oil circuit structure in formula.
Background
The structure that valve gear camshaft direct drive valve subassembly is for directly driving the structure, and the lubricated oil circuit of camshaft main journal is arranged, and the conventionality is that the camshaft is cavity, and the oil circuit passes through from the cylinder cap bearing cap, gets into a certain main journal of camshaft, then through inside cavity, distributes to each main journal of camshaft, and the camshaft front and back end is blockked up with the steel ball, prevents that engine oil from leaking.
Along with the requirement on high performance and low oil consumption of the whole engine, the engine adopts a phase VVT (Variable Valve Timing) and side-arranged OCV Valve structure, an oil path of the side-arranged OCV Valve conventionally supplies oil from a main oil path of a cylinder cover independently, and the OCV Valve is externally arranged to occupy an arrangement space.
In order to increase the responsiveness of the adjustment angle and the adjustment speed of the phase VVT and improve the performance of the engine, the middle-mounted VVT starts to be carried with the whole engine. A bolt of the middle VVT valve body is internally arranged, and the trend of an oil path needs to be changed into the trend of the inside. And the oil pressure of the oil supply cavity of the VVT is influenced by the lubrication and diversion of the main journal of the camshaft to cause oil pressure fluctuation, thereby causing the hidden trouble of VVT performance fluctuation.
SUMMERY OF THE UTILITY MODEL
The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a VVT oil circuit structure is put to distribution direct drive formula, the purpose is avoided VVT fuel feeding oil pressure chamber to receive the lubricated reposition of redundant personnel influence of camshaft main journal and is leaded to the oil pressure undulant.
In order to solve the technical problem, the utility model discloses the technical scheme who adopts is: the distribution direct-drive type middle-mounted VVT oil path structure comprises a first main bearing cover and a valve body bolt, wherein the first main bearing cover is used for guiding lubricating oil from an oil inlet channel of a cylinder cover to a first main journal inner cavity in a camshaft and a first communication oil path arranged in a valve chamber cover cap, the valve body bolt is used for guiding the lubricating oil from the first main journal inner cavity to the middle-mounted VVT, a second main journal inner cavity used for receiving the lubricating oil from the first communication oil path is arranged in the camshaft, and a plug for separating the first main journal inner cavity from the second main journal inner cavity is arranged in the camshaft.
The length of the inner cavity of the first main journal is smaller than that of the inner cavity of the second main journal.
The valve body bolt is connected with one end of the camshaft, the other end of the camshaft is provided with a high-pressure oil pump cam, a second communication oil way is arranged in the valve chamber cover cap, and lubricating oil in the inner cavity of the second main journal flows to the high-pressure oil pump cam through a second bearing cap and the second communication oil way in sequence.
The high-pressure oil pump cam and the camshaft are in interference fit.
The utility model discloses a put VVT oil circuit structure in distribution direct drive formula will put VVT oil circuit and camshaft main journal lubrication oil circuit separately design in, and the fuel feeding oil pressure chamber of putting VVT in can not receive the lubricated reposition of redundant personnel influence of camshaft main journal and lead to the oil pressure undulant, avoids causing to put VVT performance undulant.
Drawings
Fig. 1 is an exploded schematic view of the distribution direct-drive centrally-mounted VVT oil path structure of the present invention;
fig. 2 is a schematic diagram of the oil path direction of the distribution direct-drive type middle-mounted VVT oil path structure of the present invention;
the labels in the above figures are: 1. a camshaft; 2. a high-pressure oil pump cam; 3. blocking; 4. a VVT is arranged in the middle; 5. a valve body bolt; 6. a first main bearing cap; 7. a second bearing cover; 8. a valve chamber cover; 9. a first communicating oil passage; 10. a second communicating oil passage; 11. a first main journal inner cavity; 12. the second main journal inner cavity.
Detailed Description
The following detailed description of the embodiments of the present invention will be given with reference to the accompanying drawings, for the purpose of helping those skilled in the art to understand more completely, accurately and deeply the conception and technical solution of the present invention, and to facilitate its implementation.
As shown in fig. 1 and 2, the utility model provides a distribution is directly driven and is put VVT oil circuit structure in formula, including being used for guiding the lubricating oil that comes from the cylinder cap oil feed way to the first main bearing cap 6 of the first intercommunication oil circuit 9 that sets up in the first main journal inner chamber 11 in the camshaft 1 and the valve chamber shroud 8 respectively and being used for guiding the lubricating oil from first main journal inner chamber 11 to the valve body bolt 5 of putting VVT4 in, set up in the camshaft 1 and be used for receiving the second main journal inner chamber 12 that comes from the lubricating oil of first intercommunication oil circuit 9 and separate the jam 3 of first main journal inner chamber 11 and second main journal inner chamber 12.
Specifically, as shown in fig. 1 and 2, the center VVT4 is mounted on one end of the camshaft 1 by the valve body bolt 5, the first main journal inner cavity 11 and the second main journal inner cavity 12 are cavities provided at the inner center of the camshaft 1, the length of the first main journal inner cavity 11 is smaller than that of the second main journal inner cavity 12, and the first main journal inner cavity 11 and the second main journal inner cavity 12 are coaxially provided with the valve body bolt 5. The plug 3 is fixedly arranged inside the camshaft 1, and the plug 3 is positioned between the first main journal inner cavity 11 and the second main journal inner cavity 12 to separate the first main journal inner cavity 11 from the second main journal inner cavity 12. The first main bearing cap 6 is located on one side of the middle-mounted VVT4, the first main bearing cap 6 is sleeved at one end of the camshaft 1, and an oil passage communicated with an oil inlet channel of a cylinder cover is arranged inside the first main bearing cap 6. When the engine works, the cylinder cover oil inlet channel supplies oil to the first main bearing cover 6, the first main bearing cover 6 divides the lubricating oil into two paths to be output, one path is supplied to the middle-mounted VVT4 through the first main journal inner cavity 11 in the camshaft 1 through the valve body bolt 5, and the other path is input to the second main journal inner cavity 12 in the camshaft 1 through the first communicating oil path 9 in the valve chamber cover 8. Oil pressure fluctuation is very sensitive to VVT performance influence, and in order to avoid oil pressure fluctuation caused by oil way shunting influence during lubrication of a main journal of a camshaft, a separately designed oil way for a middle-arranged VVT oil way and a lubricating oil way for the main journal of the camshaft is adopted. The reliability of the performance of the middle-mounted VVT is improved, the reliability of the performance of the whole machine is improved, and the method contributes to the oil consumption reduction of the whole machine.
As shown in fig. 1 and 2, the valve body bolt 5 is connected with one end of the camshaft 1, the high-pressure oil pump cam 2 is arranged at the other end of the camshaft 1, the second communication oil path 10 is arranged in the valve chamber cover 8, and the lubricating oil in the inner cavity 12 of the second main journal flows to the high-pressure oil pump cam 2 through the second bearing cover 7 and the second communication oil path 10 in sequence to lubricate the high-pressure oil pump cam 2. Put the front end at camshaft 1 at VVT4, second bearing cap 7 and high-pressure oil pump cam 2 are located camshaft 1's rear end, high-pressure oil pump cam 2 is interference fit with camshaft 1, first main bearing cap 6 and second bearing cap 7 fixed mounting are on the engine cylinder cover, second main journal inner chamber 12 is for starting to extend to camshaft 1's rear end along camshaft 1's axial from stopping up 3, the inside of second bearing cap 7 sets up the oil duct that is linked together with second main journal inner chamber 12 and second intercommunication oil circuit 10.
The camshaft integrates the high-pressure oil pump cam 2, and in order to fully utilize the scheme of lubricating the camshaft oil circuit, the high-pressure oil pump cam 2 is lubricated by adopting the camshaft inner cavity oil circuit. The design of the lubricating oil path of the high-pressure oil pump cam 2 is simplified, and the space arrangement size of the whole machine is simplified.
According to the distribution direct-drive type middle-placed VVT oil way structure, on the premise that the reliability of the operation of the middle-placed VVT oil pressure is guaranteed, the existing layout is fully utilized and simplified in oil way arrangement, and the whole machine space arrangement is optimized.
The present invention has been described above with reference to the accompanying drawings, and it is obvious that the present invention is not limited by the above-mentioned manner, and various insubstantial improvements can be made without modification to the method and technical solution of the present invention, or the present invention can be directly applied to other occasions without modification, all within the scope of the present invention.
Claims (4)
1. Distribution direct drive type middle VVT oil path structure, which is characterized in that: the valve body bolt is used for guiding lubricating oil from the first main journal inner cavity of the first communication oil way to the middle VVT, and the second main journal inner cavity used for receiving the lubricating oil from the first communication oil way and the plug for separating the first main journal inner cavity from the second main journal inner cavity are arranged in the camshaft.
2. The distribution direct-drive centrally-mounted VVT oil path structure of claim 1, wherein: the length of the inner cavity of the first main journal is smaller than that of the inner cavity of the second main journal.
3. The distribution direct-drive centrally-mounted VVT oil path structure of claim 1 or 2, wherein: the valve body bolt is connected with one end of the camshaft, the other end of the camshaft is provided with a high-pressure oil pump cam, a second communication oil way is arranged in the valve chamber cover cap, and lubricating oil in the inner cavity of the second main journal flows to the high-pressure oil pump cam through a second bearing cap and the second communication oil way in sequence.
4. The distribution direct-drive centrally-mounted VVT oil path structure of claim 3, wherein: the high-pressure oil pump cam and the camshaft are in interference fit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922025649.XU CN211174257U (en) | 2019-11-21 | 2019-11-21 | Distribution direct-drive type middle-mounted VVT oil way structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922025649.XU CN211174257U (en) | 2019-11-21 | 2019-11-21 | Distribution direct-drive type middle-mounted VVT oil way structure |
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| Publication Number | Publication Date |
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| CN211174257U true CN211174257U (en) | 2020-08-04 |
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| CN201922025649.XU Active CN211174257U (en) | 2019-11-21 | 2019-11-21 | Distribution direct-drive type middle-mounted VVT oil way structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7067089B2 (en) | 2018-01-31 | 2022-05-16 | いすゞ自動車株式会社 | Engine hydraulic supply structure |
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2019
- 2019-11-21 CN CN201922025649.XU patent/CN211174257U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7067089B2 (en) | 2018-01-31 | 2022-05-16 | いすゞ自動車株式会社 | Engine hydraulic supply structure |
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