CN106837588B - A kind of oil channel structures of cylinder head assembly - Google Patents
A kind of oil channel structures of cylinder head assembly Download PDFInfo
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- CN106837588B CN106837588B CN201710261738.7A CN201710261738A CN106837588B CN 106837588 B CN106837588 B CN 106837588B CN 201710261738 A CN201710261738 A CN 201710261738A CN 106837588 B CN106837588 B CN 106837588B
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- oil
- oil circuit
- camshaft
- bearing cap
- hla
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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
- F02F1/00—Cylinders; Cylinder heads
- F02F1/24—Cylinder heads
-
- 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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- 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)
- Lubrication Of Internal Combustion Engines (AREA)
Abstract
The present invention discloses a kind of oil channel structures of cylinder head assembly, and structure includes the lubricant passage way for controlling oil circuit and camshaft journal of main oil gallery, HLA control oil circuit, VVT；VVT controls the lubricant passage way that oil circuit a part borrows camshaft journal, and another part is independent oil circuit, with camshaft-bearing cap vertical equity oil communication.Wherein, independent oil path half is arranged in the bottom surface of camshaft-bearing cap front end, the other half is arranged in the top surface of camshaft bearing bush seat front end, is all in the transversely and horizontally oil groove of transversely and horizontally casting and forming, and the connection of inlet and outlet two sides.After camshaft-bearing cap and bearing block are coupled, two parts oil groove is sticked to form the oil circuit of completion, and oil inlet end and camshaft-bearing cap vertical equity oil communication.Since VVT control oil circuit quantity is few, and part uses casting and forming, then cylinder head is simple and compact for structure, and components manufacturing cost reduces.
Description
Technical field
The invention belongs to technical field of automobile engine, are related to a kind of oil channel structures of cylinder head assembly, in particular to VVT
The lubricant passage way of (variable valve timing), the control oil circuit of HLA (hydraulic tappet) and camshaft journal.
Background technique
As people's living standard improves and the rapid development of auto industry, user pursue higher automobile product comfort,
The performances such as dynamic property, economy, national emission regulation is also increasingly strict, and more and more new technologies are able in automobile engine
With and promote, such as VVT, HLA(hydrauliclash adjuster) technology generally uses on the engine.Wherein, VVT skill
Art can promote engine power performance, fuel economy and meet new emission regulation demands.HLA technology can be eliminated in due course between valve
Gap promotes engine NVH(vibration and noise) performance.
Since integrated design and the amount of parts of installation are more, to realize functional requirement, mistake is arranged inside cylinder head
The oil channel structures of comprehensive complexity, the secondary lubricant passage way of the control oil circuit comprising hydraulic-driven part, friction.In the prior art, main oil
Road and VVT control oil circuit are arranged in cylinder head front end, and HLA control oil circuit is longitudinally arranged in cylinder head center, camshaft journal profit
Lubricating oil road is arranged in below cylinder head bearing or cam shaft body.
Wherein, cylinder head front end arrangement main oil gallery and VVT control oil circuit, and axial dimension will increase, due to safety clearance
Design, timing driving system also will be mobile to motor head, cause the increase of engine entire length, and be unfavorable for small-sized
Change, light-weight design.
The control valve of VVT uses plug-in type, and general arrangement is installed on cylinder head, camshaft cover, valve mechanism cover, front cover shell etc.
Position needs to arrange a plurality of oilhole, could be connected to VVT with control valve, forms control oil circuit.It is compact-sized due to cylinder head
It is again complicated, along with oil circuit hole amount is more, or even there is space oilhole, arrangement and difficulty of processing increase.In addition, control oil circuit compared with
Long, crankle is more, and oil pressure has decaying, causes VVT work low-response.
To guarantee that VVT controls the pressure and flow of oil circuit, need that check valve and flow-limiting valve are installed in VVT oil circuit.Wherein,
Check valve is mounted on the fuel feed hole front end of VVT, and flow-limiting valve is installed on RFF+HLA fuel feed hole front end.Since cylinder head front end is arranged
Main oil gallery, is limited by structure size, and arrangement is more difficult.
The lubricant passage way of camshaft journal, there are mainly two types of modes.One is from the bearing of cylinder head, processing is passed through respectively
Oilhole is worn to RFF+HLA oil circuit.Another kind is that camshaft is excessively oily using hollow oilhole, and processing extends radially through oil at each axle journal
Hole.The lubricant passage way of both the above mode requires the machine-shaping in cylinder head or cam shaft body.
Summary of the invention
The purpose of the present invention is in view of the above-mentioned problems existing in the prior art, propose a kind of oil of completely new cylinder head assembly
Road design scheme both can guarantee VVT, HLA, the function of camshaft journal lubrication is realized, while can simplify oil circuit Design and optimization system
Technique is made, realizes that space layout is more compact, manufacturing cost is lower.
To achieve the above object, the invention adopts the following technical scheme:
Cylinder head assembly of the present invention is double-layer structure, by cylinder head, camshaft bearing bush seat, camshaft-bearing cap group
At.Oil channel structures include the lubricant passage way for controlling oil circuit and camshaft journal of main oil gallery, HLA control oil circuit, VVT.
Main oil gallery of the invention is arranged in cylinder cover back-end, first processes a vertical oil straight up from cylinder head bottom surface
Road, then with transversely and horizontally process one transversely and horizontally oil duct realize that inlet and outlet two sides are connected to through be connected to.In this way, due to
Cylinder cover back-end space is larger, and oil circuit is easy arrangement, and does not influence engine bulk, and the prior art can be overcome to cause to send out
The increase of motivation entire length, be unfavorable for miniaturization, light-weight design the problem of.
HLA of the invention controls oil circuit, the longitudinal direction oil circuit of HLA containing air inlet side and the longitudinal direction exhaust side HLA oil circuit, amounts to two.
They are arranged in vertical equity respectively, are formed using deep hole machining, and the HLA with inlet and outlet side in cylinder head inlet and outlet side
Mounting hole is through connection.Wherein, the oil inlet end of the longitudinal direction air inlet side HLA oil circuit runs through with the transversely and horizontally oil duct of main oil gallery and is connected to,
And flow-limiting valve is disposed in oil circuit junction.The longitudinal direction exhaust side HLA oil circuit oil inlet end runs through with lateral inclined oil hole of air to be connected to, and in oil
Road junction is disposed with flow-limiting valve, and lateral inclined oil hole of air runs through with the transversely and horizontally oil circuit of main oil gallery and is connected to.
The present invention arranges that flow-limiting valve, mainly guarantee VVT work normally in the HLA control oil circuit of inlet and outlet side, limitation
Into the oil flow rate of HLA control oil circuit, more machine oil is needed to flow to VVT.Wherein, flow-limiting valve uses Integrated design, is divided into
Flow-limiting valve big end, flow-limiting valve middle section and flow-limiting valve small end.Flow-limiting valve big end is the spiral shell of air inlet side oil circuit and exhaust side oil circuit end
Line blocking.The flow-limiting valve middle section diameter of axle is small, be located at oil circuit junction, can be normal excessively oily, the diameter of axle of flow-limiting valve small end be approximately less than into
The aperture of the gas side longitudinal direction HLA oil circuit and the longitudinal direction exhaust side HLA oil circuit, allows a small amount of machine oil to pass through from gap between the two.
The lubricant passage way design of camshaft journal of the invention is covered in camshaft bearing, and camshaft-bearing cap is using whole
Formula structure integrates air inlet and exhaust.Camshaft journal lubricant passage way includes being arranged in camshaft-bearing cap center, in longitudinal water
The camshaft-bearing cap vertical equity oil circuit of flat processing, oil inlet end and the bearing block that camshaft bearing base rear end is processed are vertically oily
Road is through connection.In the bottom surface of camshaft-bearing cap, casting and forming has transversely and horizontally oil groove, and inlet and outlet two sides are connected to.From convex
Wheel bearing base face, by the vertical oil circuit processed straight up, by camshaft-bearing cap vertical equity oil circuit and lateral water
Flat oil groove connection, realizes the lubrication of camshaft journal.In addition, vertical oil circuit and transversely and horizontally oil circuit are according to camshaft journal
Quantity is arranged in longitudinal arrangement.
VVT of the invention controls oil circuit, and a part borrows the lubricant passage way of camshaft journal, and another part is independent oil
Road, with camshaft-bearing cap vertical equity oil communication.Wherein, independent oil path half is arranged in the bottom of camshaft-bearing cap front end
Face, the other half is arranged in the top surface of camshaft bearing bush seat front end, and being all is in the transversely and horizontally oil groove of transversely and horizontally casting and forming, and
The connection of inlet and outlet two sides.After camshaft-bearing cap and bearing block are coupled, two parts oil groove is sticked to form the oil of completion
Road, and oil inlet end and camshaft-bearing cap vertical equity oil communication.Since VVT control oil circuit quantity is few, and part is using casting
Type is caused, then cylinder head is simple and compact for structure, and components manufacturing cost reduces.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of cylinder head assembly of the invention；
Fig. 2 is cylinder head oil channel structures schematic diagram of the invention；
Fig. 3 is flow-limiting valve arrangement schematic diagram of the invention；
Fig. 4 is flow-limiting valve structural schematic diagram of the invention.
In figure, the longitudinal direction 1- working connection, the longitudinal direction 2- air inlet side HLA oil circuit, 3- transverse direction main oil gallery, 4- exhaust side HLA longitudinal oil
Road, 5- transverse direction inclined oil hole of air, the vertical oil circuit of 6- bearing block, 7- bearing cap vertical equity oil circuit, the vertical oil circuit of 8- bearing cap, 9- bearing
Cover transversely and horizontally oil groove, 10- bearing cap VVT oil circuit, 11- bearing block VVT oil circuit, 12-HLA mounting hole, 13- flow-limiting valve, 14- gas
Cylinder cap, 15- camshaft bearing bush seat, 16- camshaft-bearing cap.
Specific embodiment
Structure of the invention is specifically described below in conjunction with attached drawing:
As shown in Figure 1, cylinder head assembly of the invention is double-layer structure, by cylinder head 14, camshaft bearing bush seat 15, cam
Axle bearing lid 16 forms.
Its oil channel structures referring to fig. 2, includes main oil gallery, HLA control oil circuit, VVT control oil circuit and camshaft journal lubrication
Oil circuit.
Main oil gallery is arranged in cylinder cover back-end, longitudinal working connection 1 by processing straight up from cylinder head bottom surface and one
The lateral main oil gallery 3 transversely and horizontally processed, which runs through, to be connected to.
HLA control oil circuit includes the longitudinal direction air inlet side HLA oil circuit 2 and the longitudinal direction exhaust side HLA oil circuit 4, is respectively in vertical equity
It is arranged in cylinder head inlet and outlet side, and runs through with the HLA mounting hole 12 of inlet and outlet side and is connected to.The longitudinal direction air inlet side HLA oil circuit 2
Oil inlet end runs through with lateral main oil gallery 3 to be connected to, and is disposed with flow-limiting valve 13 in oil circuit junction, the longitudinal direction exhaust side HLA oil circuit 4
Oil inlet end runs through with lateral inclined oil hole of air 5 to be connected to, and is disposed with flow-limiting valve 13, the transverse direction inclined oil hole of air 5 and cross in oil circuit junction
To main oil gallery 3 through connection.
Camshaft journal lubricant passage way includes being arranged in camshaft-bearing cap center, the camshaft processed in vertical equity
Bearing cap vertical equity oil circuit 7, the vertical oil circuit 6 of the bearing block that oil inlet end is processed with camshaft bearing base rear end, which runs through, to be connected to.
In the bottom surface of camshaft-bearing cap, there are bearing cap transversely and horizontally oil circuit 9, and inlet and outlet two sides are connected to.From camshaft bearing base
Face, it is by the vertical oil circuit 8 of the bearing cap processed straight up, camshaft-bearing cap vertical equity oil circuit 7 and bearing cap is lateral
Horizontal oil circuit 9 is connected to, and realizes the lubrication of camshaft journal.
VVT control oil circuit a part borrows the lubricant passage way of camshaft journal, and another part is independent oil path, and convex
Wheel bearing lid vertical equity oil communication.Independent oil path half is arranged in the bottom surface of camshaft-bearing cap front end, is bearing cap
VVT oil circuit 10, the other half is arranged in the top surface of camshaft bearing bush seat front end, oily for bearing block VVT, and 11, it is all transversely and horizontally oily
Slot, and inlet and outlet two sides are connected to, after camshaft-bearing cap is coupled with bearing block, two parts oil groove is sticked to form completion
Oil circuit, and oil inlet end and camshaft-bearing cap vertical equity oil communication.
Specific oil communication relationship is as follows:
HLA controls oil circuit, need to distinguish air inlet and exhaust.Wherein, machine oil successively passes through longitudinal main oil gallery 1 of cylinder head, cross
To main oil gallery 3, the longitudinal direction air inlet side HLA oil circuit 2, it is finally flow to the HLA mounting hole 12 of air inlet side, forms air inlet side HLA control oil
Road.Machine oil successively passes through longitudinal main oil gallery 1, lateral working connection 3, lateral inclined oil hole of air 5, the longitudinal direction exhaust side HLA oil circuit 4, finally flows
To the HLA mounting hole 12 of air inlet side, forms exhaust side HLA and control oil circuit.
The lubricant passage way of camshaft journal, machine oil successively pass through longitudinal main oil gallery 1 of cylinder head, lateral main oil gallery 3, transverse direction
The vertical oil circuit 6 of inclined oil hole of air 5, bearing block, bearing cap longitudinal direction oil circuit 7, the vertical oil circuit 8 of bearing cap, bearing cap transverse direction oil circuit 9, finally
It flow at camshaft journal and is lubricated.Wherein, the intermediate connection of the vertical oil circuit of bearing cap 8 and bearing cap transverse direction oil circuit 9, then machine
Oil does not flow to both ends, realizes the lubrication at inlet and outlet camshaft journal.In addition, the vertical oil circuit 8 of bearing cap and bearing cap are lateral
Oil circuit 9 is arranged according to the quantity of camshaft journal in longitudinal arrangement, and the vertical oil circuit 8 of bearing cap of every row is all vertical with bearing cap
It is connected to oil circuit 7.
VVT controls oil circuit, and in-line is only disposed in cylinder head, and machine oil successively passes through cylinder head longitudinal direction main oil gallery 1, cross
To main oil gallery 3, lateral inclined oil hole of air 5, the vertical oil circuit 6 of bearing block, bearing cap longitudinal direction oil circuit 7, the vertical oil circuit 8 of bearing cap, bearing cap
VVT oil circuit 10 and bearing block VVT oil circuit 11.Wherein, the vertical oil circuit 8 of bearing cap and bearing cap VVT oil circuit 10, bearing block VVT oil
The intermediate connection on road 11, then machine oil flows to both ends respectively, is embodied as inlet and outlet VVT fuel feeding.In addition, bearing cap VVT oil circuit 10 with
Bearing block VVT oil circuit 11 is sticked to form a complete oil circuit up and down.
It is as shown in Figure 3 and Figure 4 current limliting valve arrangement and arrangement schematic diagram, specially in the longitudinal direction air inlet side HLA oil circuit 2 and gas
The handover of the junction of the lateral main oil gallery 3 of cylinder cap and the longitudinal direction exhaust side HLA oil circuit 4 and the lateral inclined oil hole of air 5 of cylinder head
Place, is respectively disposed with flow-limiting valve 13, and the arragement construction of inlet and outlet two sides is identical.Flow-limiting valve uses Integrated design, and flow-limiting valve is big
End 131 is the screwed plug of 4 end of the longitudinal direction air inlet side HLA oil circuit 2 and the longitudinal direction exhaust side HLA oil circuit, 132 diameter of axle of flow-limiting valve middle section
It is small, it is located at oil circuit junction, can be normal excessively oily, the diameter of axle of flow-limiting valve small end 133 is approximately less than 2 He of the longitudinal direction air inlet side HLA oil circuit
The aperture of the longitudinal direction exhaust side HLA oil circuit 4 is located in the longitudinal direction air inlet side HLA oil circuit 2 and the longitudinal direction exhaust side HLA oil circuit 4, allows few
Amount machine oil passes through from gap between the two.In this way, gear machine oil from the small end of flow-limiting valve 13 and the longitudinal direction air inlet side HLA oil circuit 2 it
Between annular gap pass through, since excessively oily space becomes smaller, realize current limliting, remaining major part machine oil passes through the middle section of flow-limiting valve 13,
Flow to subsequent oil circuit.
Claims (3)
1. a kind of oil channel structures of cylinder head assembly, the cylinder head assembly is double-layer structure, by cylinder head, camshaft bearing
Seat, camshaft-bearing cap composition, the oil channel structures include main oil gallery, HLA control oil circuit, VVT control oil circuit and cam shaft
Neck lubricant passage way；
It is characterized in that, the main oil gallery is arranged in cylinder cover back-end, it is main by the longitudinal direction processed straight up from cylinder head bottom surface
The lateral main oil gallery (3) that oil duct (1) is transversely and horizontally processed with one, which runs through, to be connected to；
The HLA control oil circuit includes the longitudinal direction air inlet side HLA oil circuit (2) and the longitudinal direction exhaust side HLA oil circuit (4), respectively in longitudinal
It is arranged horizontally in cylinder head inlet and outlet side, and runs through with the HLA mounting hole (12) of inlet and outlet side and is connected to；Air inlet side HLA is longitudinal
The oil inlet end of oil circuit (2) runs through with lateral main oil gallery (3) to be connected to, and is disposed with flow-limiting valve (13), exhaust side in oil circuit junction
The oil inlet end of the longitudinal direction HLA oil circuit (4) runs through with lateral inclined oil hole of air (5) to be connected to, and is disposed with flow-limiting valve (13) in oil circuit junction,
The transverse direction inclined oil hole of air (5) is run through with lateral main oil gallery (3) to be connected to；
The camshaft journal lubricant passage way includes being arranged in camshaft-bearing cap center, the camshaft processed in vertical equity
The vertical oil circuit of bearing block (6) of bearing cap vertical equity oil circuit (7), oil inlet end and the processing of camshaft bearing base rear end is through company
It is logical；In the bottom surface of camshaft-bearing cap, there are camshaft-bearing cap transversely and horizontally oil circuit (9), and inlet and outlet two sides are connected to；From convex
Wheel bearing base face, by the vertical oil circuit of the bearing cap processed straight up (8), by camshaft-bearing cap vertical equity oil circuit
(7) transversely and horizontally oil circuit (9) is connected to camshaft-bearing cap, realizes the lubrication of camshaft journal；
Described VVT control oil circuit a part borrows camshaft journal lubricant passage way, and another part is independent oil path, with cam shaft
Hold lid vertical equity oil circuit (7) connection；Independent oil path half is arranged in the bottom surface of camshaft-bearing cap front end, is bearing cap VVT
Oil circuit (10), the other half is arranged in the top surface of camshaft bearing bush seat front end, is bearing block VVT oil circuit (11), bearing cap VVT oil circuit
(10) and bearing block VVT oil circuit (11) is all transversely and horizontally oil groove, and inlet and outlet two sides are connected to, camshaft-bearing cap and bearing
After seat is coupled, two parts oil groove is sticked to form the oil circuit of completion, and oil inlet end and camshaft-bearing cap vertical equity oil circuit
(7) it is connected to.
2. the oil channel structures of cylinder head assembly according to claim 1, which is characterized in that the flow-limiting valve (13) is using collection
At design, inlet and outlet side is general, and is arranged in cylinder cover back-end；Flow-limiting valve (13) is divided into flow-limiting valve big end (131), limit
Flow valve middle section (132) and flow-limiting valve small end (133)；Flow-limiting valve big end (131) is air inlet side oil circuit and exhaust side oil circuit end
Screwed plug；Flow-limiting valve middle section (132) diameter of axle is small, normal excessively oily, and air inlet side flow-limiting valve is located at the longitudinal direction air inlet side HLA oil circuit
(2) and lateral main oil gallery (3) junction, exhaust side flow-limiting valve are located at the longitudinal direction exhaust side HLA oil circuit (4) and lateral inclined oil hole of air (5)
Junction；The diameter of axle of flow-limiting valve small end (133) is approximately less than the longitudinal direction air inlet side HLA oil circuit (2) and the longitudinal direction exhaust side HLA oil circuit (4)
Aperture, allow a small amount of machine oil to pass through from gap between the two.
3. the oil channel structures of cylinder head assembly according to claim 1, which is characterized in that the camshaft journal lubricating oil
The vertical oil circuit of the bearing cap on road (8) and camshaft-bearing cap transversely and horizontally oil circuit (9) according to the quantity of camshaft journal in longitudinal
Arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710261738.7A CN106837588B (en) | 2017-04-20 | 2017-04-20 | A kind of oil channel structures of cylinder head assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710261738.7A CN106837588B (en) | 2017-04-20 | 2017-04-20 | A kind of oil channel structures of cylinder head assembly |
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| Publication Number | Publication Date |
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| CN106837588A CN106837588A (en) | 2017-06-13 |
| CN106837588B true CN106837588B (en) | 2019-01-22 |
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| CN201710261738.7A Active CN106837588B (en) | 2017-04-20 | 2017-04-20 | A kind of oil channel structures of cylinder head assembly |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110500464B (en) * | 2019-08-21 | 2024-08-23 | 江苏长龄液压股份有限公司 | Compact central swivel joint |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08260930A (en) * | 1995-03-24 | 1996-10-08 | Suzuki Motor Corp | Lubricating oil feeding structure |
| JP2007056811A (en) * | 2005-08-25 | 2007-03-08 | Toyota Motor Corp | Oil supply structure for internal combustion engine |
| CN101435380B (en) * | 2008-12-17 | 2011-05-11 | 奇瑞汽车股份有限公司 | Internal combustion engine cylinder cap for HCCI\SI switch |
| CN101956584B (en) * | 2010-10-15 | 2013-06-12 | 奇瑞汽车股份有限公司 | Driving oil way of variable valve mechanism with VVT and VVL system |
| CN203570445U (en) * | 2013-12-03 | 2014-04-30 | 东风汽车公司 | Engine cylinder cover oil circuit structure |
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Effective date of registration: 20210425 Address after: 230000 No. 966 Dabie Mountain Road, hi tech Zone, Anhui, Hefei Patentee after: HEFEI CHANGAN AUTOMOBILE Co.,Ltd. Address before: 400023, No. 260, Jianxin East Road, Jiangbei District, Chongqing Patentee before: Chongqing Changan Automobile Co.,Ltd. |
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