CN202117725U - VVT engine exhaust camshaft - Google Patents
VVT engine exhaust camshaft Download PDFInfo
- Publication number
- CN202117725U CN202117725U CN2011201602382U CN201120160238U CN202117725U CN 202117725 U CN202117725 U CN 202117725U CN 2011201602382 U CN2011201602382 U CN 2011201602382U CN 201120160238 U CN201120160238 U CN 201120160238U CN 202117725 U CN202117725 U CN 202117725U
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- Prior art keywords
- camshaft
- camshaft body
- rollback
- oil
- oil path
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- 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.)
- Expired - Lifetime
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- 239000003921 oil Substances 0.000 claims description 73
- 239000010721 machine oil Substances 0.000 claims description 8
- 229910000831 Steel Inorganic materials 0.000 claims description 5
- 239000010959 steel Substances 0.000 claims description 5
- 238000000034 method Methods 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 238000003754 machining Methods 0.000 abstract description 3
- 230000008569 process Effects 0.000 abstract description 3
- RDYMFSUJUZBWLH-UHFFFAOYSA-N endosulfan Chemical compound C12COS(=O)OCC2C2(Cl)C(Cl)=C(Cl)C1(Cl)C2(Cl)Cl RDYMFSUJUZBWLH-UHFFFAOYSA-N 0.000 abstract 1
- 230000008901 benefit Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
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- Valve-Gear Or Valve Arrangements (AREA)
- Valve Device For Special Equipments (AREA)
Abstract
The utility model discloses a VVT engine exhaust camshaft, including a camshaft body; a timing belt wheel positioning pin and a gear positioning pin are provided on the camshaft body; a drive oil path and a return oil path connected with a camshaft cover oil path and a phaser oil path are provided on the camshaft body; the drive oil path is constituted by drive oil holes which are mutually communicated and respectively disposed in a radial direction of the camshaft body and drive oil channels disposed in an axial direction of the camshaft body; and the return oil path is constituted by the return oil holes which are mutually communicated and respectively disposed in the radial direction of the camshaft body and a return oil channel disposed in the axial direction of the camshaft body. According to the utility model, structure of the conventional camshaft is improved, a whole machine is guaranteed to normally work, a camshaft blank is not changed, and a new die sinking process is not required so as to greatly decrease manufacturing cost of the VVT engine; and a work requirement of a VVT system is met through machining of the drive oil path and the return oil path in a machining process.
Description
Technical field
The utility model relates to a kind of engine exhaust camshaft, relates in particular to a kind of VVT engine exhaust camshaft.
Background technique
Rare day by day and grobal environment destroys day by day under the serious situation at fuel resource; How automobile can better energy-saving and emission-reduction be exploitation and the necessary problem of considering of design; VVT (Variable ValveTiming; VVT) be that the phase discriminator assembly is installed on the exhaust cam shaft, drive admission cam shaft through engaging gear, realize the variable single VVT structure of admission cam shaft valve with exhaust cam shaft.On available engine, increase the VVT system with the performance that promotes motor, reduce engine consumption, reach waste gas emission standard, improve engine idle speed stability simultaneously.The application of vvt mechanism becomes what the trend requires.And the application of this mechanism needs mounting point, driving oil circuit to phase discriminator to design, to satisfy the required condition of this VVT system operation.If a kind of exhaust cam shaft newly developed; Need design and develop new mould; And the exploitation of mould will increase the development cost of automobile on the one hand greatly, will make the Application and Development of automobile new product postpone on the other hand, thereby be unfavorable for the automobile production profit maximization.
The model utility content
The purpose of the utility model is to provide the VVT engine exhaust camshaft that a kind of cost of production is low, do not need extra development and Design mould.
To achieve these goals, the technological scheme of the utility model employing is:
Described VVT engine exhaust camshaft; Comprise the camshaft body; On said camshaft body, be provided with timing belt pulley locating stud and gear locating stud, on said camshaft body, be provided with the driving oil circuit and the rollback oil circuit that connect camshaft cover cap oil circuit and phase discriminator oil circuit; Said driving oil circuit by mutual perforation and be arranged at respectively the camshaft body radially the driving oilhole and be located at the camshaft body shaft to the driving oil duct constitute; Said rollback oil circuit by mutual perforation and be arranged at respectively the camshaft body radially the rollback oilhole and be located at the camshaft body shaft to the rollback oil duct constitute.
Machine oil on the camshaft body flows into and the position of flowing out the rollback oilhole and driving oilhole is provided with oil groove being positioned at.
Said driving oil duct auxiliary hole is through the steel ball shutoff, and said rollback oil duct auxiliary hole is through the bolt of timing gear shutoff.
Phase discriminator is installed on the said camshaft body, and said phase discriminator is through the radial location of said gear locating stud, through the locking nut axially locating.
The advantage of the utility model is: said VVT engine exhaust camshaft; Existing camshaft is carried out structure Design to be improved; Satisfying under the normal situation about using of complete machine; Cam shaft blank is constant, only when machining, processes the work requirements that driving oil circuit and rollback oil circuit are used to guarantee the VVT system; Simultaneously need not do the stable installation property that too much improvement can guarantee phase discriminator to the VVT exhaust cam shaft structure; It need not die sinking again, has practiced thrift relevant die sinking expense; The technology oilhole adopts the steel ball shutoff simultaneously, and is convenient and swift.
Description of drawings
Face the content of each width of cloth accompanying drawing expression of the utility model specification and the mark among the figure down and make brief description:
Fig. 1 is the utility model VVT engine exhaust camshaft schematic perspective view;
Fig. 2 is the left view of VVT engine exhaust camshaft among Fig. 1;
Fig. 3 is an E-E direction view among Fig. 2;
Fig. 4 is a F-F direction view among Fig. 2;
Fig. 5 is a Q-Q direction view among Fig. 4;
Fig. 6 is a VVT motor phase discriminator scheme of installation;
Fig. 7 is a VVT engine valve chamber cover structure schematic representation;
Mark among the above-mentioned figure is:
1, camshaft body, 2, the gear locating stud, 3, the timing belt pulley locating stud, 4, drive oilhole, 5, the rollback oilhole; 6, drive oil duct, 7, the rollback oil duct, 8, oil groove, 9, steel ball; 10, phase discriminator, 11, locking nut, 12, valve chamber cover, 13, the valve chamber cover oil groove.
Embodiment
Contrast accompanying drawing below,, the embodiment of the utility model is done further detailed explanation through description to optimum embodiment.
Extremely shown in Figure 5 like Fig. 1; Said VVT engine exhaust camshaft; Comprise camshaft body 1, on camshaft body 1, be provided with timing belt pulley locating stud 3 and gear locating stud 2, on camshaft body 1, be provided with the driving oil circuit and the rollback oil circuit that connect camshaft cover cap oil circuit and phase discriminator oil circuit; Drive oil circuit by mutual perforation and be arranged at respectively camshaft body 1 radially driving oilhole 4 and be located at camshaft body 1 axial driving oil duct 6 and constitute; The rollback oil circuit by mutual perforation and be arranged at respectively camshaft body 1 radially rollback oilhole 5 and be located at camshaft body 1 axial rollback oil duct 7 and constitute.
Drive oil circuit machine oil is incorporated into phase discriminator 10 by the camshaft cover cap, provide phase discriminator 10 work required oil pressure; After phase discriminator 10 work, the rollback oil circuit is drawn recycle with machine oil, can satisfy the required condition of VVT system operation through driving oil circuit and rollback oil circuit are set on camshaft body 1.
Because the oil pressure of phase discriminator 10 initializations has certain requirement, be located at camshaft body 1 axial driving oil duct 6 numbers and design according to the real work needs, like Fig. 2 and shown in Figure 3, driving oil duct is 4; Being arranged at camshaft body 1 driving oilhole 4 radially introduces machine oil driving oil duct 6 and then is incorporated into phase discriminator 10 oil circuits; Driving oilhole 4 designs according to the real work needs at the position and the number of camshaft body 1; Like Fig. 1 and shown in Figure 3, the number that drives oilhole 4 is 8.
The quick oil return of rollback oil circuit for the benefit of, the diameter of being located at the axial rollback oil duct 7 of camshaft body 1 be greater than driving oil duct 6, and for the structure of reasonable Arrangement camshaft body 1 and guarantee its structural strength, the number of rollback oil duct 7 is less than and drives oil duct 6 and be advisable.The number of rollback oil duct 7 and rollback oilhole 5 can design according to the real work needs.Like Fig. 2 and shown in Figure 4, rollback oil duct 7 is 1, and the number of rollback oilhole 5 is 8.
Because unsuitable processing oil groove on the phase discriminator 10; For guaranteeing that driving oil circuit and rollback oil circuit can play a role rapidly, of Fig. 7, be processed with valve chamber cover oil groove 13 on the valve chamber cover 12; Like Fig. 3 and shown in Figure 4; Machine oil on the camshaft body 1 flows into and the position of flowing out rollback oilhole 5 and driving oilhole 4 is provided with oil groove 8 being positioned at, and said oil groove 8 can store machine oil, can in time form on the one hand to drive oil circuit and provide said phase discriminator work required oil pressure; Can store machine oil on the other hand and be convenient to rollback oil duct rollback speed, guarantee the working stability of VVT system.The width of said oil groove 8 and the degree of depth can be adjusted according to work requirements.
Consider from angle easy to process; Processing will stay auxiliary hole after driving oil duct 6 and rollback oil duct 7; For guaranteeing to drive the reliability of oil circuit and the work of rollback oil circuit; After processing drives oil duct 6 and rollback oil duct 7 on the camshaft body 1, use steel ball 9 shutoff to drive oil duct 6 auxiliary holes, use bolt of timing gear shutoff rollback oil duct 7 auxiliary holes.
Phase discriminator 10 is cores of VVT technology, and for guaranteeing the connective stability of phase discriminator 10 and camshaft body 1, as shown in Figure 6, phase discriminator 10 is installed on the camshaft body 1, and it is through 2 radial locations of gear locating stud, and other sets up locking nut 11 to its axially locating.The screwing force of phase discriminator 10 and assembly tool, anchor clamps etc. are all constant, practice thrift correlative charges.
When motor is carried out Transform Type design; The boundary conditions of the exhaust cam shaft of motor should be confirmed according to exhaust cam shaft assembly device layout pattern on cylinder cap; Behind definite exhaust cam shaft assembly device boundary conditions; According to cylinder cap lubricating oil path and the layout pattern of phase discriminator on exhaust cam shaft, confirm the exhaust cam shaft structure pattern then.The exhaust cam shaft structure of the utility model can be more excellent satisfy the arrangement requirement of phase discriminator on camshaft, less because of the variation of form structure again, can avoid the change significantly of the structure of cylinder cap, can effectively reduce the design and manufacture cost of VVT motor.
Above the utility model has been carried out exemplary description; Obviously the concrete realization of the utility model does not receive the restriction of aforesaid way; As long as adopted the method design of the utility model and the improvement of the various unsubstantialities that technological scheme is carried out; Or the design of the utility model and technological scheme are directly applied to other occasion without improving, all within the protection domain of the utility model.
Claims (4)
1. VVT engine exhaust camshaft; Comprise camshaft body (1); On said camshaft body (1), be provided with timing belt pulley locating stud (3) and gear locating stud (2), it is characterized in that: on said camshaft body (1), be provided with the driving oil circuit and the rollback oil circuit that connect camshaft cover cap oil circuit and phase discriminator oil circuit; Said driving oil circuit by mutual perforation and be arranged at respectively camshaft body (1) radially driving oilhole (4) and be located at the axial driving oil duct (6) of camshaft body (1) and constitute; Said rollback oil circuit by mutual perforation and be arranged at respectively camshaft body (1) radially rollback oilhole (5) and be located at the axial rollback oil duct (7) of camshaft body (1) and constitute.
2. according to the described VVT engine exhaust of claim 1 camshaft, it is characterized in that: the position being positioned at the last machine oil inflow of camshaft body (1) and outflow rollback oilhole (5) and driving oilhole (4) is provided with oil groove (8).
3. according to claim 1 or 2 described VVT engine exhaust camshafts, it is characterized in that: said driving oil duct (6) auxiliary hole is through steel ball (9) shutoff, and said rollback oil duct (7) auxiliary hole is through the bolt of timing gear shutoff.
4. according to the described VVT engine exhaust of claim 3 camshaft, it is characterized in that: phase discriminator (10) is installed on the said camshaft body (1), and said phase discriminator (10) is through said gear locating stud (2) radial location, through locking nut (11) axially locating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201602382U CN202117725U (en) | 2011-05-19 | 2011-05-19 | VVT engine exhaust camshaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201602382U CN202117725U (en) | 2011-05-19 | 2011-05-19 | VVT engine exhaust camshaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202117725U true CN202117725U (en) | 2012-01-18 |
Family
ID=45458798
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201602382U Expired - Lifetime CN202117725U (en) | 2011-05-19 | 2011-05-19 | VVT engine exhaust camshaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202117725U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109869210A (en) * | 2017-12-01 | 2019-06-11 | 宝沃汽车（中国）有限公司 | A kind of cam shaft end connecting device and camshaft and engine and vehicle |
| CN109899126A (en) * | 2017-12-11 | 2019-06-18 | 宝沃汽车（中国）有限公司 | A kind of engine and vehicle |
-
2011
- 2011-05-19 CN CN2011201602382U patent/CN202117725U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109869210A (en) * | 2017-12-01 | 2019-06-11 | 宝沃汽车（中国）有限公司 | A kind of cam shaft end connecting device and camshaft and engine and vehicle |
| CN109899126A (en) * | 2017-12-11 | 2019-06-18 | 宝沃汽车（中国）有限公司 | A kind of engine and vehicle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120118 |