CN102493888A - Oil circuit structure of VVT (variable valve timing) engine cylinder cover system - Google Patents
Oil circuit structure of VVT (variable valve timing) engine cylinder cover system Download PDFInfo
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- CN102493888A CN102493888A CN201110383323XA CN201110383323A CN102493888A CN 102493888 A CN102493888 A CN 102493888A CN 201110383323X A CN201110383323X A CN 201110383323XA CN 201110383323 A CN201110383323 A CN 201110383323A CN 102493888 A CN102493888 A CN 102493888A
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Abstract
The invention relates to an oil circuit structure of a VVT (variable valve timing) engine cylinder cover system, wherein the oil circuit structure comprises an oil adding opening cover, a high-pressure oil pipe, a cylinder head cover assembly, a No.1 camshaft cover, a camshaft assembly and a cylinder cover; the high-pressure oil pipe is connected to a cylinder body main oil circuit through a pipeline, and the engine oil of the cylinder body main oil circuit is introduced to the cylinder head cover assembly; and an OCV (oil control valve) is installed in the cylinder head cover assembly. According to the invention, improvement is carried out on the existing engine, VVT is additionally arranged so as to improve the dynamic property and economic property of the engine and reduce emission, the existing cylinder cover and the No.1 camshaft cover are slightly modified, the modification can be machined and finished on the existing cylinder cover blank, the expense of a cylinder cover mold is saved, the oil circuit is simple, the reliability is high, the responsiveness is good, the machining is simple, the cost is low, and the oil circuit structure is convenient to dismount, check and repair.
Description
Technical field
The invention belongs to the engine design field, particularly a kind of VVT engine cylinder cover system oil-way structure.
Background technique
The motor car engine of now main automobile factory is more and more stricter to oil consumption and emission request, in order to improve power performance and to reduce oil consumption, on motor, has increased VVT (to call VVT in the following text) technology.At present more general hydraulic type VVT device need realize that the layout quality of OCV will directly have influence on the speed of response and the reliability of VVT system through machine oil control assembly (to call OCV in the following text) and phase discriminator assembly (to call VCP in the following text).And on the motor of the present no VVT of volume production, arranging the VVT system, the layout of OCV has just become a big difficult point.Prior art is arranged OCV on cylinder cap or 1# camshaft cover, drawing up machine oil simultaneously through the oil duct on the cylinder cap from the cylinder body main oil gallery, camshaft lubrication reaches to the VVT fuel feeding.This way need be revised the cylinder cap oil duct, on cylinder cap or 1# camshaft cover, arranges required A mouth, B mouth and the T mouth of OCV, and is bigger to cylinder cap or the change of 1# camshaft cover, needs the complicated mould of exploitation again, and expense is high.And casting and machine add difficulty to be increased, and is prone to form pore, influences the reliability of system.This programme is given the VVT fuel feeding through external oil duct, need not revise the oil duct of cylinder cap, cost saving, and also camshaft lubrication is independent of each other the raising system reliability with the VVT fuel feeding.
Summary of the invention
The present invention solves seal groove and makes difficult problem; Platform will be sealed and seal groove is designed to circle; Can directly use the profiling cutter machine to add seal groove, thereby when the machine that solved adds the elliptical shape seal groove, cause cutter to fracture easily, machine adds height, inefficient problem.
The technological scheme that the present invention adopts:
A kind of VVT engine cylinder cover system oil-way structure; Comprise filler cap, high-pressure oil pipe, cover assembly of cylinder head, 1# camshaft cover, camshaft assembly, cylinder head, high-pressure oil pipe is connected to the cylinder body main oil gallery through pipeline, and the machine oil of cylinder body main oil gallery is incorporated in the cover assembly of cylinder head; OCV is installed in the cover assembly of cylinder head; Cover assembly of cylinder head is furnished with oil inlet P mouth, A oil duct junction, B oil duct junction and oil return inlet T mouth, and wherein the P mouth connects high-pressure oil pipe, and it is inner that the machine oil of main oil gallery is introduced OCV; The A oil duct junction links to each other with the B mouth with the A mouth of OCV respectively with the B oil duct junction, staggers at axial and P mouth, avoids oil impregnate each other; The T mouth is arranged in afterbody; Link to each other with the drain tap T mouth of OCV; The draining of OCV drawn get back to cylinder head inside; Cover assembly of cylinder head is installed on the cylinder head, and the machine oil of A, B oil duct gets into total edge oilhole and the center oilhole of camshaft through the oilhole of 1# camshaft cover at last, and the edge oilhole links to each other with A, the B oil pocket of VCP respectively with the center oilhole.
The above-mentioned camshaft assembly outside is provided with first annular groove and second annular groove; Wherein, first annular groove leads to camshaft center oilhole, and first annular groove is communicated with the B hydraulic fluid port of OCV through oil duct; Camshaft center oilhole 72 is communicated with the B chamber of VCP, thereby realizes the passing through mutually of B oil duct of OCV and VCP; Second annular groove leads to camshaft edge oilhole, and second annular groove is communicated with the A hydraulic fluid port of OCV through oil duct, and camshaft edge oilhole is communicated with the A chamber of VCP, thus the passing through mutually of the A oil duct of realization OCV and VCP.
After above-mentioned cover assembly of cylinder head is installed on the cylinder head, and seal with 〇 shape seal ring between the 1# camshaft cover, guarantee that machine oil can not leak from here.
Above-mentioned 1# camshaft cover is two semi-round ring shapes, connects with the camshaft cover connecting bolt between two semicircular ring.
The technique effect that the present invention obtains:
The present invention increases VVT through on existing motor, improving, and discharges with the power character and Economy, the reduction that improve motor; Very little to existing cylinder cap and the change of 1# camshaft cover, can on existing cylinder cap blank, add completion by machine, practice thrift the cylinder cap die cost; Oil circuit is simple, and reliability is high, and responsiveness is good; Processing is simple, and is with low cost, is convenient to disassemble, checks, repairs.
Description of drawings
Fig. 1: VVT engine cylinder cover system zero parts of the present invention are formed schematic representation;
Fig. 2: OCV initial position: the OCV internal oil passages moves towards P mouth → B mouth → A mouth → T mouth (hereinafter to be referred as the PBAT trend);
Fig. 3: OCV closed position;
Fig. 4: OCV maximum actuation position: the OCV internal oil passages moves towards P mouth → A mouth → B mouth → T mouth (hereinafter to be referred as the PABT trend);
Fig. 5: VVT engine cylinder convering system B oil circuit of the present invention moves towards schematic representation;
Fig. 6: VVT engine cylinder convering system A oil circuit of the present invention moves towards schematic representation;
Fig. 7: VVT engine cylinder convering system camshaft oil circuit schematic representation of the present invention.
Embodiment
Below in conjunction with accompanying drawing mode of execution of the present invention is done further explanation.
Referring to Fig. 1-7; A kind of VVT engine cylinder cover system oil-way structure; Comprise filler cap 1, high-pressure oil pipe 2, cover assembly of cylinder head 3,1# camshaft cover 6, camshaft assembly 7, cylinder head 8, high-pressure oil pipe is connected to the cylinder body main oil gallery through pipeline, and the machine oil of cylinder body main oil gallery is incorporated in the cover assembly of cylinder head; The OCV valve is installed in the cover assembly of cylinder head; Cover assembly of cylinder head is furnished with oil inlet P mouth 31, A oil duct junction 32, B oil duct junction 33 and oil return inlet T mouth 34, and wherein the P mouth connects high-pressure oil pipe, and it is inner that the machine oil of main oil gallery is introduced the OCV valve; The A oil duct junction links to each other with the B mouth with the A mouth of OCV valve respectively with the B oil duct junction, staggers at axial and P mouth, avoids oil impregnate each other; The T mouth is arranged in afterbody; Link to each other with the drain tap T mouth of OCV valve; The draining of OCV valve drawn get back to cylinder head inside; Cover assembly of cylinder head is installed on the cylinder head, and the machine oil of A, B oil duct gets into total edge oilhole 74 and the center oilhole 72 of camshaft through the oilhole of 1# camshaft cover at last, and the edge oilhole links to each other with A, the B oil pocket of VCP respectively with the center oilhole.
Referring to Fig. 7; The described camshaft assembly outside is provided with first annular groove 71 and second annular groove 73; Wherein, first annular groove leads to camshaft center oilhole, and first annular groove is communicated with the B hydraulic fluid port of OCV valve through oil duct; Camshaft center oilhole 72 is communicated with the B chamber of VCP, thereby realizes the passing through mutually of B oil duct of OCV valve and VCP; Second annular groove leads to camshaft edge oilhole, and second annular groove is communicated with the A hydraulic fluid port of OCV valve through oil duct, and camshaft edge oilhole is communicated with the A chamber of VCP, thus the passing through mutually of the A oil duct of realization OCV valve and VCP.
Referring to Fig. 5-6, after described cover assembly of cylinder head is installed on the cylinder head, and seal with 〇 shape seal ring 4 between the 1# camshaft cover, guarantee that machine oil can not leak from here.Described 1# camshaft cover is two semi-round ring shapes, connects with camshaft cover connecting bolt 5 between two semicircular ring.
Fig. 2-4 is communicated with the situation schematic representation for OCV, and according to control needs, through the adjusting of OCV, Fig. 2 connects for PBAT, is about to P and is communicated with B, and the B mouth 33 through cover assembly of cylinder head 3 is after a series of oil circuit (see figure 5)s, and arrival VCP inside promotion VCP moves.Oil return gets into the A mouth 32 of cover assembly of cylinder head 3 after a series of oil circuit (see figure 6)s, because the A of OCV is communicated with T, final machine oil flow back into cylinder head 8 inside through the T mouth 34 of cover assembly of cylinder head 3.Fig. 3 is the OCV closed condition, is equivalent to OCV and is blocked.Fig. 4 is that the PABT opposite with Fig. 2 is connected.
Be illustrated in figure 5 as the trend of B oil duct; When OCV is the PBAT state; The oil that comes out from the B mouth of OCV is through the B of cover assembly of cylinder head 3 mouth 33, the oil groove 71 entering center oilholes 72 at the cover assembly of cylinder head 3 of flowing through, 1# camshaft cover 6, camshaft assembly 7 edges, thus get into the B chamber of VCP.Promote to flow out from the A chamber of VCP after the VCP action.The oil that comes out from the A chamber of VCP is through loop shown in Figure 6, the oil groove 73 through the oilhole 74 entering edges at the edge of camshaft assembly 7, and again through the A mouth 32 of 1# camshaft cover 6, cover assembly of cylinder head 3, it is inner to get into OCV from the A mouth of OCV.Through the adjusting of OCV, the A mouth of OCV links to each other with its drain tap, and the OCV drain tap connects the T mouth 34 of cover assembly of cylinder head 3, finally makes machine oil flow back to cylinder cap 8 inside.When OCV is the PABT state, realize opposite machine oil loop.
Protection scope of the present invention is not limited to the above embodiments, and obviously, those skilled in the art can carry out various changes and distortion and do not depart from the scope of the present invention and spirit the present invention.If these changes and distortion belong in the scope of claim of the present invention and equivalent technologies thereof, then the intent of the present invention also comprises these changes and is out of shape interior.
Claims (4)
1. VVT engine cylinder cover system oil-way structure; Comprise filler cap (1), high-pressure oil pipe (2), cover assembly of cylinder head (3), 1# camshaft cover (6), camshaft assembly (7), cylinder head (8); It is characterized in that: high-pressure oil pipe is connected to the cylinder body main oil gallery through pipeline; The machine oil of cylinder body main oil gallery is incorporated in the cover assembly of cylinder head, and OCV is installed in the cover assembly of cylinder head, and cover assembly of cylinder head is furnished with oil inlet P mouth (31), A oil duct junction (32), B oil duct junction (33) and oil return inlet T mouth (34); Wherein the P mouth connects high-pressure oil pipe, and it is inner that the machine oil of main oil gallery is introduced OCV; The A oil duct junction links to each other with the B mouth with the A mouth of OCV respectively with the B oil duct junction, staggers at axial and P mouth, avoids oil impregnate each other; The T mouth is arranged in afterbody; Link to each other with the drain tap T mouth of OCV; The draining of OCV drawn get back to cylinder head inside; Cover assembly of cylinder head is installed on the cylinder head, and the machine oil of A, B oil duct gets into total edge oilhole (74) and the center oilhole (72) of camshaft through the oilhole of 1# camshaft cover at last, and the edge oilhole links to each other with A, the B oil pocket of VCP respectively with the center oilhole.
2. VVT engine cylinder cover system oil-way structure according to claim 1; It is characterized in that: the described camshaft assembly outside is provided with first annular groove (71) and second annular groove (73); Wherein, first annular groove leads to camshaft center oilhole, and first annular groove is communicated with the B hydraulic fluid port of OCV through oil duct; Camshaft center oilhole 72 is communicated with the B chamber of VCP, thereby realizes the passing through mutually of B oil duct of OCV and VCP; Second annular groove leads to camshaft edge oilhole, and second annular groove is communicated with the A hydraulic fluid port of OCV through oil duct, and camshaft edge oilhole is communicated with the A chamber of VCP, thus the passing through mutually of the A oil duct of realization OCV and VCP.
3. VVT engine cylinder cover system oil-way structure according to claim 1 and 2; It is characterized in that: after described cover assembly of cylinder head is installed on the cylinder head; And seal with 〇 shape seal ring (4) between the 1# camshaft cover, guarantee that machine oil can not leak from here.
4. VVT engine cylinder cover system oil-way structure according to claim 1 and 2 is characterized in that: described 1# camshaft cover connects with camshaft cover connecting bolt (5) between two semicircular ring for two semi-round ring shapes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110383323XA CN102493888A (en) | 2011-11-28 | 2011-11-28 | Oil circuit structure of VVT (variable valve timing) engine cylinder cover system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110383323XA CN102493888A (en) | 2011-11-28 | 2011-11-28 | Oil circuit structure of VVT (variable valve timing) engine cylinder cover system |
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| CN102493888A true CN102493888A (en) | 2012-06-13 |
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| CN201110383323XA Pending CN102493888A (en) | 2011-11-28 | 2011-11-28 | Oil circuit structure of VVT (variable valve timing) engine cylinder cover system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103775166A (en) * | 2012-10-25 | 2014-05-07 | 重庆长安汽车股份有限公司 | Oil way structure of engine |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101038230A (en) * | 2007-04-26 | 2007-09-19 | 天津大学 | Internal-combustion engine continuous variable timing phase detecting device and detecting method thereof |
| CN101988400A (en) * | 2009-07-31 | 2011-03-23 | 上海通用汽车有限公司 | Variable valve timing device |
| CN201826912U (en) * | 2010-07-19 | 2011-05-11 | 奇瑞汽车股份有限公司 | Oil supply duct of valve-variable timing system engine phaser |
| CN102155272A (en) * | 2011-03-28 | 2011-08-17 | 重庆长安汽车股份有限公司 | Control oil way of variable valve timing device |
-
2011
- 2011-11-28 CN CN201110383323XA patent/CN102493888A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101038230A (en) * | 2007-04-26 | 2007-09-19 | 天津大学 | Internal-combustion engine continuous variable timing phase detecting device and detecting method thereof |
| CN101988400A (en) * | 2009-07-31 | 2011-03-23 | 上海通用汽车有限公司 | Variable valve timing device |
| CN201826912U (en) * | 2010-07-19 | 2011-05-11 | 奇瑞汽车股份有限公司 | Oil supply duct of valve-variable timing system engine phaser |
| CN102155272A (en) * | 2011-03-28 | 2011-08-17 | 重庆长安汽车股份有限公司 | Control oil way of variable valve timing device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103775166A (en) * | 2012-10-25 | 2014-05-07 | 重庆长安汽车股份有限公司 | Oil way structure of engine |
| CN103775166B (en) * | 2012-10-25 | 2016-08-10 | 重庆长安汽车股份有限公司 | The oil channel structures of electromotor |
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Application publication date: 20120613 |
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