CN202991166U - Variable air valve lifting mechanism of engine - Google Patents
Variable air valve lifting mechanism of engine Download PDFInfo
- Publication number
- CN202991166U CN202991166U CN 201220648943 CN201220648943U CN202991166U CN 202991166 U CN202991166 U CN 202991166U CN 201220648943 CN201220648943 CN 201220648943 CN 201220648943 U CN201220648943 U CN 201220648943U CN 202991166 U CN202991166 U CN 202991166U
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- cam
- outer shaft
- axle
- protruding wheel
- pack
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Abstract
The utility model discloses a variable air valve lifting mechanism of an engine. The variable air valve lifting mechanism of the engine comprises a protruding wheel inner shaft, a protruding wheel outer shaft which is arranged on the protruding wheel inner shaft in a sleeved mode, and a protruding wheel component which is arranged on the protruding wheel outer shaft in a sleeved mode, wherein the protruding wheel component is provided with a protruding wheel group which is composed of both a first protruding wheel and a second protruding wheel with different external contour heights; and a connecting piece which drives the protruding wheel component to synchronously slide corresponding to the protruding wheel outer shaft when the protruding wheel inner shaft axially slides corresponding to the protruding wheel outer shaft is arranged among the protruding wheel inner shaft, the protruding wheel outer shaft and the protruding wheel component in a connection mode. The variable air valve lifting mechanism of the engine achieves the air valve to be lifting variable, improves economical efficiency of fuel oil and has the advantages of being simple in structure, easy to realize, small in occupied space and low in cost. The variable air valve lifting mechanism of the engine is suitable for being arranged on different kinds of engines of automobiles.
Description
Technical field
The utility model belongs to technical field of engines, relates to a kind of engine variable valve lift mechanism.
Background technique
For regulation and the Consumer who satisfies Abgasgesetz hangs down the requirement of oil consumption strong power to automobile, increasing new technology by each large automobile vendor Application and Development to motor, as Variable Valve Timing, variable intake manifold length technology, variable vortex technology, lift range variable technology etc.In these technology, the lift range variable technology for improve engine performance, to improve fuel economy significant.In order to satisfy the requirement of different load under Under Different Work Condition of Engine, need to adjust accordingly valve lift curve and port timing.Such as, during time of engine low speed, need little valve lift and little valve opening duration to improve induction air flow ratio, avoid airflow reflux; During the high engine speeds running, need large valve lift and large valve opening duration to guarantee that air inlet is sufficient; During engine start, should reduce valve lift and valve opening duration, to reduce discharging, improve idle stability.
The lift range variable technology is used widely and develops in Europe and Japan, but the enforcement difficulty of this technology is larger, the pattern that adopts the double-cam molded line to coordinate with control actuator to great majority realizes the change of valve lift, there is complex structure, the camshaft quality is large, processing difficulties, the defective that application cost is high, seriously restrict the application of this technology on automobile, affected the development of general-utility car.
The model utility content
For solving the above deficiency that exists in prior art, the utility model provides a kind of engine variable valve lift mechanism, endwisely slip with respect to the cam outer shaft by axle in cam and drive simultaneously the cam pack synchronous slide, realize variable valve lift, make motor possess the performance of high-speed power and low speed torque, improve fuel economy, have simple in structure, be easy to the characteristics little, that user cost is low that realize, take up room.
For achieving the above object, a kind of engine variable valve lift mechanism of the present utility model, it comprises axle in cam, is set in the cam outer shaft on axle in cam, is set in the cam pack on the cam outer shaft, has the cam set that is comprised of different the first cam of gabarit height and the second cam on described cam pack; Be connected with between axle, cam outer shaft, cam pack in cam and drive cam pack when axle endwisely slips with respect to the cam outer shaft in cam with respect to the link of cam outer shaft synchronous slide.
As to restriction of the present utility model, described link is straight pin; Be provided with vertically the through hole of bar shaped on described cam outer shaft; Described straight pin passes through hole, and two ends respectively with cam in axle, cam pack connect firmly.
As the restriction to aforesaid way, be respectively equipped with the first mounting hole, the second mounting hole on axle, cam pack in described cam, described straight pin is the axle interference fit in the first mounting hole place and cam, straight pin is in the second mounting hole place and cam pack interference fit, and straight pin is in through hole and cam outer shaft Spielpassung.
As the further restriction to aforesaid way, connect through two semi-circular structure transition respectively between the two ends on two long limits of described through hole.
The utility model also has a kind of restriction, and in described cam, axle, cam outer shaft, cam pack coaxial line arrange; Axle in cam outer shaft and cam, cam pack coordinate with suit between the cam outer shaft and are Spielpassung.
Owing to having adopted technique scheme, the utility model compared with prior art, obtained technological progress is:
When time of engine low speed, need little valve lift and little valve opening duration, control valve lift by the first less cam work of gabarit height on cam pack this moment.Because axle in cam pack, cam outer shaft, cam is set with successively, be each other Spielpassung, when engine running speed raises, in cam, axle slides vertically by external force, in addition owing to being interference fit between axle, straight pin and cam pack in straight pin and cam, be Spielpassung between straight pin and cam outer shaft, the cam internal axle axial slides and just to make straight pin drive the cam pack synchronous slide, makes the first cam disengages working position.After the second less cam of gabarit height entered the working position, in external force disappearance cam, axle just no longer slided.Due to endwisely slipping of axle in cam, make the first cam or the second cam be in the working position, to realize variable valve lift.
In sum, the utlity model has simple in structure, be easy to the characteristics little, that user cost is low that realize, take up room.
The utility model is fit to be installed on various motor car engines.
Description of drawings
Below in conjunction with drawings and the specific embodiments, the utility model is done further to describe in detail.
Fig. 1 is the utility model embodiment's assembly relation schematic diagram;
Fig. 2 is the utility model embodiment's plane structure schematic diagram;
Fig. 3 is the annexation schematic diagram of axle in cam, cam pack, pin;
Fig. 4 is the structural representation of axle in cam;
Fig. 5 is the structural representation of cam outer shaft;
Fig. 6 is the structural representation of cam pack.
In figure: 1, axle in cam; 11, the first mounting hole; 2, cam outer shaft; 21, through hole; 3, cam pack; 31, the first cam; 32, the second cam; 33, the second mounting hole; 4, pin.
Embodiment
A kind of engine variable valve lift mechanism that the present embodiment relates to, as shown in Figure 1-Figure 3, it comprises axle 1, cam outer shaft 2, cam pack 3 and straight pin 4 in cam.
In cam, axle 1 is provided with the first circular mounting hole 11, and structure as shown in Figure 4.In cam, axle 1 is connected with hydraulic system, and ECU realizes endwisely slipping of the interior axle 1 of hydraulic system actuating cam by controlling the unlatching of solenoid valve in hydraulic system.
Cam outer shaft 2 is set on the interior axle 1 of cam, is both Spielpassung.Cam outer shaft 2 is provided with the through hole 21 of long strip, connects through two semi-circular structure transition respectively between the two ends on two long limits of through hole 21.The width of through hole 21 equates with the aperture of the first mounting hole 11, and structure as shown in Figure 5.
In cam pack 3, cam outer shaft 2, cam, axle 1 is connected through the second mounting hole 33, through hole 21, the first mounting hole 11 places respectively by straight pin 4, wherein be connected to Spielpassung between straight pin 4 and cam outer shaft 2, being connected between axle 1 in straight pin 4 and cam, straight pin 4 and cam pack 3 is interference fit.
The working procedure of the present embodiment is as follows:
When time of engine low speed, need little valve lift and little valve opening duration, this moment is by the first less cam 31 job control valve lifts of gabarit height on cam pack 3.When engine running speed raises, ECU receives tach signal and opens solenoid valve, because axle 1 in cam pack 3, cam outer shaft 2, cam is set with successively, be each other Spielpassung, in the hydraulic system actuating cam, axle 1 endwisely slips with respect to cam outer shaft 2 but make.In addition, owing to being interference fit between axle 1, straight pin 4 and cam pack 3 in straight pin 4 and cam, be Spielpassung between straight pin 4 and cam outer shaft 2, in cam, axle 1 endwisely slips and just makes straight pin 4 drive cam pack 3 with respect to cam outer shaft 2 synchronous slides, makes the first cam 31 break away from the working position.After the second larger cam 32 of gabarit height entered the working position, ECU controlled closed electromagnetic valve, hydraulic system just no longer in actuating cam axle 1 endwisely slip movingly, the second cam 32 work increase valve lift and valve opening duration with this.Due to endwisely slipping of axle in cam 1, make the first cam 31 or the second cam 32 be in the working position, to realize variable valve lift.
Claims (5)
1. engine variable valve lift mechanism,
It is characterized in that:It comprises axle (1) in cam, is set in the cam outer shaft (2) on axle (1) in cam, is set in the cam pack (3) on cam outer shaft (2), has the cam set that is comprised of different the first cam (31) of gabarit height and the second cam (32) on described cam pack (3); Be connected with axle in cam (1) between axle in cam (1), cam outer shaft (2), cam pack (3) and drive cam pack (3) when endwisely slipping with respect to cam outer shaft (2) with respect to the link of cam outer shaft (2) synchronous slide.
2. engine variable valve lift mechanism according to claim 1,
It is characterized in that:Described link is straight pin (4); Be provided with vertically the through hole (21) of bar shaped on cam outer shaft (2); After described straight pin (4) passes through hole (21), its two ends respectively with cam in axle (1), cam pack (3) connect firmly.
3. engine variable valve lift mechanism according to claim 2,
It is characterized in that:Be respectively equipped with the first mounting hole (11), the second mounting hole (33) on axle (1), cam pack (3) in described cam, described straight pin (4) in the first mounting hole (11) locate with cam in axle (1) interference fit, straight pin (4) is located and cam pack (3) interference fit in the second mounting hole (33), and straight pin (4) is in through hole (21) and cam outer shaft (2) Spielpassung.
4. engine variable valve lift mechanism according to claim 2,
It is characterized in that:Connect through two semi-circular structure transition respectively between the two ends on two long limits of described through hole (21).
5. the described engine variable valve lift mechanism of any one according to claim 1-4,
It is characterized in that:Axle (1), cam outer shaft (2), cam pack (3) coaxial line setting in described cam; Axle (1) in cam outer shaft (2) and cam, cam pack (3) coordinate with suit between cam outer shaft (2) and are Spielpassung.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220648943 CN202991166U (en) | 2012-11-30 | 2012-11-30 | Variable air valve lifting mechanism of engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220648943 CN202991166U (en) | 2012-11-30 | 2012-11-30 | Variable air valve lifting mechanism of engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202991166U true CN202991166U (en) | 2013-06-12 |
Family
ID=48562356
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220648943 Expired - Fee Related CN202991166U (en) | 2012-11-30 | 2012-11-30 | Variable air valve lifting mechanism of engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202991166U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105240083A (en) * | 2015-11-06 | 2016-01-13 | 杭州新坐标科技股份有限公司 | Two-section variable valve lift and valve secondary opening mechanism |
| CN105317498A (en) * | 2015-11-27 | 2016-02-10 | 杭州新坐标科技股份有限公司 | Cam sliding block locating mechanism for variable valve lifting mechanism |
-
2012
- 2012-11-30 CN CN 201220648943 patent/CN202991166U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105240083A (en) * | 2015-11-06 | 2016-01-13 | 杭州新坐标科技股份有限公司 | Two-section variable valve lift and valve secondary opening mechanism |
| CN105240083B (en) * | 2015-11-06 | 2017-10-31 | 杭州新坐标科技股份有限公司 | A kind of two-part lift range variable and secondary opening of air valve mechanism |
| CN105317498A (en) * | 2015-11-27 | 2016-02-10 | 杭州新坐标科技股份有限公司 | Cam sliding block locating mechanism for variable valve lifting mechanism |
| CN105317498B (en) * | 2015-11-27 | 2017-10-31 | 杭州新坐标科技股份有限公司 | Cam slide detent mechanism for variable air valve lift range mechanism |
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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 |
Granted publication date: 20130612 Termination date: 20201130 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |