CN204436505U - Variable air valve lift range mechanism - Google Patents
Variable air valve lift range mechanism Download PDFInfo
- Publication number
- CN204436505U CN204436505U CN201520098433.5U CN201520098433U CN204436505U CN 204436505 U CN204436505 U CN 204436505U CN 201520098433 U CN201520098433 U CN 201520098433U CN 204436505 U CN204436505 U CN 204436505U
- Authority
- CN
- China
- Prior art keywords
- lift
- position limit
- valve lift
- limit pin
- confined planes
- 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.)
- Expired - Fee Related
Links
- 230000001276 controlling effect Effects 0.000 claims abstract description 24
- 230000001105 regulatory effect Effects 0.000 claims abstract description 11
- RKTYLMNFRDHKIL-UHFFFAOYSA-N copper;5,10,15,20-tetraphenylporphyrin-22,24-diide Chemical compound [Cu+2].C1=CC(C(=C2C=CC([N-]2)=C(C=2C=CC=CC=2)C=2C=CC(N=2)=C(C=2C=CC=CC=2)C2=CC=C3[N-]2)C=2C=CC=CC=2)=NC1=C3C1=CC=CC=C1 RKTYLMNFRDHKIL-UHFFFAOYSA-N 0.000 claims description 6
- 239000003921 oil Substances 0.000 description 7
- 239000000446 fuel Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Abstract
The utility model provides a kind of variable air valve lift range mechanism, comprises controlling device, and controlling device is fixed on worm gear or position limit pin, for regulating the first lift confined planes or the distance between the second lift confined planes and position limit pin.Because controlling device is fixed on worm gear or position limit pin, the first lift confined planes or the distance between the second lift confined planes and position limit pin can be regulated, the angle that eccentric shaft is turned over is adjusted, thus make the minimum and maximum lift of variable air valve lift range mechanism adjusted, make the valve lift of motor reality be consistent with theoretical valve lift further.Make overall engine valve lift Horizontal consistency better like this, make motor normal ignition, oil inflame to obtain more abundant further, oil consumption is relatively little.
Description
Technical field
The utility model relates to automobile technical field, particularly a kind of variable air valve lift range mechanism.
Background technique
In the last few years along with grobal environment worsens and energy problem is more and more nervous, required to improve constantly to the fuel performance of motor.If engine fuel is insufficient in automobile, can cause the waste of the energy on the one hand, the tail gas that automobile is discharged on the other hand also can affect environment, therefore, needs the fuel performance improving motor.
Wherein, the variable air valve lift range mechanism in motor is the key component of the fuel performance affecting motor.Adopt the motor of variable air valve lift range mechanism more than conventional engines amount of parts, owing to can there is error in component manufacture or course of working, there is adverse influence in the precision of these errors to variable air valve lift range mechanism.Be typically provided with eccentric shaft in variable air valve lift range mechanism, eccentric shaft is provided with worm gear, is adjusted the scope of angle of eccentricity, namely adjust the minimum and maximum lift of valve by the cooperation of worm gear and position limit pin.
But by the impact of component error, and the error that component exist cannot be eliminated, and existing variable air valve lift range mechanism exists the problem that actual lift and theoretical lift differ greatly, and causes Integral air valve lift level between motor unanimously poor.Especially, when valve actual lift is less than theoretical lift, can cause motor cannot the insufficient and larger problem of oil consumption of normal ignition, oil inflame.
Model utility content
In view of this, the utility model is intended to propose a kind of variable air valve lift range mechanism, cannot normal ignition, fuel oil is insufficient and oil consumption is larger problem to solve motor that the difference of valve lift Horizontal consistency between motor of the prior art causes.
For achieving the above object, the technical solution of the utility model is achieved in that
A kind of variable air valve lift range mechanism, comprises eccentric shaft, described eccentric shaft is installed with worm gear, described worm gear radial direction has the first lift confined planes and the second lift confined planes; When described eccentric shaft turns, described first lift confined planes or the second lift confined planes can against position limit pins, described position limit pin is fixed on engine cylinder and covers, also comprise controlling device, described controlling device is fixed on described worm gear or described position limit pin, for regulating described first lift confined planes or the distance between described second lift confined planes and described position limit pin.
Wherein, described controlling device comprises a screw rod, and one end of described screw rod can be screwed onto described worm gear inside by described first lift confined planes.
Wherein, described controlling device comprises a screw rod, and described screw rod inserts described position limit pin by the radial direction of described position limit pin, is screwed onto on described position limit pin.
Preferably, described controlling device also comprises nut, and described nut is screwed onto on described screw rod.
Preferably, described controlling device also comprises nut, and described nut is screwed onto on described screw rod.
Wherein, one end of described screw rod is provided with interior six sides or interior tetragonal vertically.
Preferably, the surface contacted with described position limit pin of described screw rod is plane.
Wherein, the surface contacted with described worm gear of described screw rod is plane.
In the variable air valve lift range mechanism that the utility model embodiment provides, because controlling device is fixed on worm gear or position limit pin, the first lift confined planes or the distance between the second lift confined planes and position limit pin can be regulated, the angle that eccentric shaft is turned over is adjusted, thus make the minimum and maximum lift of variable air valve lift range mechanism adjusted, make the valve lift of motor reality be consistent with theoretical valve lift further.Make overall engine valve lift Horizontal consistency better like this, make motor normal ignition, oil inflame to obtain more abundant further, oil consumption is relatively little.
Accompanying drawing explanation
The accompanying drawing forming a part of the present utility model is used to provide further understanding of the present utility model, and schematic description and description of the present utility model, for explaining the utility model, is not formed improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 is the structural representation of the variable air valve lift range mechanism described in the utility model embodiment;
The partial structurtes schematic diagram that Fig. 2 is the eccentric shaft shown in Fig. 1;
The schematic diagram that Fig. 3 is the worm gear shown in Fig. 1, locating stud coordinates with controlling device;
The structural representation of a kind of controlling device that Fig. 4 provides for the utility model embodiment.
Description of reference numerals:
11-motor, 111-worm screw, 12-worm gear, 13-position limit pin, 14-eccentric shaft, 15-camshaft, 16-valve, 121-first confined planes, 122-second confined planes, 18-regulating arm, swing arm in the middle of 19-, 101-link arm, 17-controlling device, 171-screw rod, 172-nut, six sides or interior tetragonal in 1711-.
Embodiment
It should be noted that, when not conflicting, the embodiment in the utility model and the feature in embodiment can combine mutually.
Below with reference to the accompanying drawings and describe the utility model in detail in conjunction with the embodiments.
See Fig. 1 to Fig. 4, the utility model embodiment provides a kind of variable air valve lift range mechanism, this variable air valve lift range mechanism comprises eccentric shaft 14, and described eccentric shaft 14 is installed with worm gear 12, described worm gear 12 radial direction has the first lift confined planes 121 and the second lift confined planes 122; When described eccentric shaft 14 rotates, described first lift confined planes 121 or the second lift confined planes 122 can against position limit pins 13, described position limit pin 13 is fixed in engine cylinder cover (not shown), also comprise controlling device 17, described controlling device 17 is fixed on described worm gear 12 or described position limit pin 13, for regulating described first lift confined planes 121 or the distance between described second lift confined planes 122 and described position limit pin 13.
In the variable air valve lift range mechanism that the utility model embodiment provides, working procedure is specially motor 11 and drives worm screw 111 to rotate, worm screw 111 engages with worm gear 12, therefore worm gear 12 rotates under the drive of worm screw 111, worm gear 12 is installed on eccentric shaft 14, therefore, worm gear 12 rotates, and drives eccentric shaft 14 to rotate.Eccentric shaft is also provided with regulating arm 18, and regulating arm 18 is connected with middle swing arm 19, and middle swing arm 19 is connected with link arm 101.The crank-driven camshaft 15 of motor rotates, and in the middle of the actuated by cams on camshaft 15, swing arm 19 is moved, and middle swing arm 19 drives the opening and closing of valve 16.Regulating arm 18 one end can be assembled on eccentric shaft 14 by Spielpassung, and worm gear 12 interference press-fits on eccentric shaft 14, and motor 11 rotates to realize the rotation of eccentric shaft 14 in clockwise and counterclockwise both direction by driving worm gear 12.
Eccentric shaft 14 eccentric wheel in rotary course does eccentric rotational motion, link arm 101 can be driven to rotate by regulating arm 18, and the position of swing arm 19 rotating center in the middle of simultaneously changing, and then the position of swing arm 19 in the middle of changing, realize the continuous variable of valve 16 lift.Two lift confined planes in eccentric shaft 14 rotary course: when the first lift confined planes 121 contacts with position limit pin 13 with the second lift confined planes 122, reach the minimum of variable air valve lift range mechanism and maximum lift respectively.
Because controlling device 17 is fixed on worm gear 12 or position limit pin 13, the first lift confined planes 121 or the distance between the second lift confined planes 122 and position limit pin 13 can be regulated, the angle that eccentric shaft 14 is turned over is adjusted, thus make the minimum and maximum lift of variable air valve lift range mechanism adjusted, make the valve lift of motor reality be consistent with theoretical valve lift further.Make overall engine valve lift Horizontal consistency better like this, make motor normal ignition, oil inflame to obtain more abundant further, oil consumption is relatively little.
Particularly, on the one hand, described controlling device 17 can comprise a screw rod 171, and one end of described screw rod 171 can be screwed onto described worm gear 12 inside by described first lift confined planes 121.Worm gear 12 can establish female screw in radial directions, can screw in screw to make screw rod 171.Supposing that the first lift confined planes 121 is minimum lift end face, when needing the distance between increase first lift confined planes 121 and position limit pin 13, screw rod 171 can be screwed out from screw certain distance, to satisfy the demands.
See Fig. 3 and Fig. 4, on the other hand, described controlling device 17 can comprise a screw rod 171, and described screw rod 171 inserts described position limit pin 13 by the radial direction of described position limit pin 13, is screwed onto on described position limit pin 13.Position limit pin 13 can establish female screw in radial directions, can screw in screw to make screw rod 171.Supposing that the first lift confined planes 121 is minimum lift end face, when needing the distance between increase first lift confined planes 121 and worm gear 12, screw rod 171 can be screwed out from screw certain distance, to satisfy the demands.
Further, described controlling device 17 also comprises nut 172, and described nut 172 is screwed onto on described screw rod 171.This nut 172 can play the effect of locking, screw rod 171 can be fixed on position limit pin 13 or worm gear 12, reach and avoid screw rod 171 to occur when the power of being hit and/or vibration to loosen and the object that causes lift range variable to lose efficacy, nut 172 also can increase the effective thread connecting length of screw rod 171 to a certain extent simultaneously, improves reliability.
In above-described embodiment, one end of described screw rod 171 is provided with interior six sides or interior tetragonal 1711 vertically, so that installation and removal, particularly, and six sides or interior tetragonal 1711 in can making according to the shape of spanner.Certainly, in the internal structure that one end of screw rod is provided with vertically, being not limited to interior six sides or interior four directions, also can be cross or in-line, and object is all for the ease of assembly wrench or instrument, and to facilitate rotary screw, be more convenient for human users.
In above-described embodiment, the surface contacted with described position limit pin of described screw rod 171 is plane, certainly, also can be sphere, or the curved surface of other shapes.Wherein, the surface contacted with described worm gear 12 of described screw rod 171 is plane, also can be sphere, or the curved surface of other shapes.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (8)
1. a variable air valve lift range mechanism, comprise eccentric shaft (14), described eccentric shaft (14) is installed with worm gear (12), described worm gear (12) radial direction has the first lift confined planes (121) and the second lift confined planes (122); When described eccentric shaft (14) rotates, described first lift confined planes (121) or the second lift confined planes (122) can against position limit pin (13), described position limit pin (13) is fixed on engine cylinder and covers, it is characterized in that, also comprise controlling device (17), described controlling device (17) is fixed on described worm gear (12) or described position limit pin (13), for regulating described first lift confined planes (121) or the distance between described second lift confined planes (122) and described position limit pin (13).
2. variable air valve lift range mechanism according to claim 1, it is characterized in that, described controlling device (17) comprises a screw rod (171), and one end of described screw rod (171) can be screwed onto described worm gear (12) inside by described first lift confined planes (121).
3. variable air valve lift range mechanism according to claim 1, it is characterized in that, described controlling device (17) comprises a screw rod (171), described screw rod (171) inserts described position limit pin (13) by the radial direction of described position limit pin (13), is screwed onto on described position limit pin (13).
4. variable air valve lift range mechanism according to claim 2, is characterized in that, described controlling device (17) also comprises nut (172), and described nut (172) is screwed onto on described screw rod (171).
5. variable air valve lift range mechanism according to claim 3, is characterized in that, described controlling device also comprises nut (172), and described nut (172) is screwed onto on described screw rod (171).
6. the variable air valve lift range mechanism according to claim 4 or 5, is characterized in that, one end of described screw rod (171) is provided with interior six sides or interior tetragonal (1711) vertically.
7. variable air valve lift range mechanism according to claim 2, is characterized in that, the surface contacted with described position limit pin (13) of described screw rod (171) is plane.
8. variable air valve lift range mechanism according to claim 3, is characterized in that, the surface contacted with described worm gear (12) of described screw rod (171) is plane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520098433.5U CN204436505U (en) | 2015-02-11 | 2015-02-11 | Variable air valve lift range mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520098433.5U CN204436505U (en) | 2015-02-11 | 2015-02-11 | Variable air valve lift range mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204436505U true CN204436505U (en) | 2015-07-01 |
Family
ID=53604383
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520098433.5U Expired - Fee Related CN204436505U (en) | 2015-02-11 | 2015-02-11 | Variable air valve lift range mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204436505U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108223039A (en) * | 2017-06-09 | 2018-06-29 | 长城汽车股份有限公司 | Control method, system and the vehicle of continuous variable valve lift mechanism |
| CN111379619A (en) * | 2018-12-28 | 2020-07-07 | 长城汽车股份有限公司 | Variable compression ratio mechanism and control method thereof |
-
2015
- 2015-02-11 CN CN201520098433.5U patent/CN204436505U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108223039A (en) * | 2017-06-09 | 2018-06-29 | 长城汽车股份有限公司 | Control method, system and the vehicle of continuous variable valve lift mechanism |
| CN108223039B (en) * | 2017-06-09 | 2019-11-01 | 长城汽车股份有限公司 | Control method, system and the vehicle of continuous variable valve lift mechanism |
| CN111379619A (en) * | 2018-12-28 | 2020-07-07 | 长城汽车股份有限公司 | Variable compression ratio mechanism and control method thereof |
| CN111379619B (en) * | 2018-12-28 | 2021-10-15 | 长城汽车股份有限公司 | Variable compression ratio mechanism and control method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150701 |