CN209053651U - It can be changed electro-hydraulic valve gear entirely - Google Patents
It can be changed electro-hydraulic valve gear entirely Download PDFInfo
- Publication number
- CN209053651U CN209053651U CN201821897595.5U CN201821897595U CN209053651U CN 209053651 U CN209053651 U CN 209053651U CN 201821897595 U CN201821897595 U CN 201821897595U CN 209053651 U CN209053651 U CN 209053651U
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- CN
- China
- Prior art keywords
- screw axis
- slip screw
- piston
- oilhole
- sliding sleeve
- 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.)
- Withdrawn - After Issue
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- 230000007246 mechanism Effects 0.000 claims abstract description 11
- 238000007789 sealing Methods 0.000 claims abstract description 5
- 230000002093 peripheral effect Effects 0.000 claims description 13
- 230000004044 response Effects 0.000 abstract description 3
- 230000008859 change Effects 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 7
- 239000010720 hydraulic oil Substances 0.000 description 5
- 238000002485 combustion reaction Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 239000012530 fluid Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005474 detonation Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- BGOFCVIGEYGEOF-UJPOAAIJSA-N helicin Chemical compound O[C@@H]1[C@@H](O)[C@H](O)[C@@H](CO)O[C@H]1OC1=CC=CC=C1C=O BGOFCVIGEYGEOF-UJPOAAIJSA-N 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 230000000505 pernicious effect Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
Abstract
It can be changed electro-hydraulic valve gear entirely the utility model discloses a kind of, it include: slip screw axis, sliding sleeve, piston and reset spring, the slip screw axis and the piston are slidably and sealingly connected with the sliding sleeve respectively, in the sliding sleeve, the space between the slip screw axis and the piston forms the hydraulic cavities of sealing；The end of the slip screw axis is provided with the roller gear being engaged with rack, and the rack gear is driven by the straight line executing mechanism that engine electric-controlled unit controls；The sliding sleeve offers top oilhole and lower part oilhole, is provided with check valve on the connecting line between the lower part oilhole and the low pressure oil pocket of the engine.The utility model jointly controls valve motion using slip screw axis and camshaft, change the opening and closing moment of top oilhole by rotation slip screw axis, the function of fully variable valve actuator for air can be realized, fast response time, it is easy to control, instead of expensive high-speed electromagnetic valve, multicylinder engine is suitble to use.
Description
Technical field
A kind of can be changed the utility model relates to engine air valve device technical field more particularly to entirely electro-hydraulic valve gear.
Background technique
Fully variable valve actuator for air (Fully Variable Valve System, abbreviation FVVS) can be achieved valve and most rise higher
Journey, valve duration angle and port timing three continuous variable, be of great significance to the energy-saving and emission-reduction of engine.FVVS
It can control in such a way that inlet valve early closes (EIVC) into the working medium quantity in cylinder, thus cancel air throttle, this nothing
Pumping loss will be greatly reduced in air throttle gasoline engine, reduce fuel oil consumption when middle Smaller load by 10-15%.Full changeable air valve
Mechanism is matched with charge inter cooling, the high problem of the detonation and thermic load after can solve engine booster, flat increasing substantially
Low-temperature burning is realized under the premise of equal effective pressure, improves engine thermal efficiency and reduces the discharge of pernicious gas；Therefore FVVS
Technology has become one of the important development direction of internal combustion engine new technology.
Currently, external relatively advanced fully variable valve actuator for air is the MultiAir of Schaeffler and Fiat's joint research and development
(also known as UniAir) system, system that employs the electro-hydraulic valve mechanisms of camshaft actuated formula, are combined by camshaft with solenoid valve
Control valve motion rule.The working principle of the system is as follows: hydraulic piston is pushed by cam, hydraulic piston by hydraulic cavities with
Piston is driven to be connected, and hydraulic cavities are then by a switching regulator solenoid valve control.It is hydraulic when solenoid valve is in the completely closed state
Piston pushes driving piston by fluid pressure, and the hydraulic pressure that cam rotation generates is passed to valve；Inlet valve is complete at this time
It is controlled entirely by cam, it is in the open state.When solenoid valve is in fully open state, fluid pressure can not transmit driving force,
Hydraulic piston can not push driving piston, and inlet valve is no longer controlled by cam and is in falling or closed state.By to electromagnetism
Valve is opened and closed the control at moment, and a variety of different valve motion rules can be realized, realize the function of fully variable valve actuator for air.But
It is that electromagnetic valve structure is complicated, it is expensive, limit the popularization and application of the technology.
In order to substitute above-mentioned solenoid valve, Chinese invention patent CN100410513C discloses a kind of valve timing continuous variable
Valve System of Internal Combustion Engine, including valve assembly, hydraulic pressure cylinder assembly, hydraulic cylinder exit port control device, hydraulic cylinder import barrier dress
It sets and camshaft drive component.The system during hydraulic cylinder is discharged in oil liquid, that there are pressure oscillations is big for hydraulic low-pressure system,
Lead to the jiggly problem of work, during internal combustion engine stops working, there are lubricating oil leakage, what is admitted air into asks hydraulic system
Topic, causes the system to be difficult to promote and apply.
To solve the above-mentioned problems, 103334805 B of Chinese invention patent CN discloses a kind of internal combustion engine again can be changed liquid entirely
It calms the anger the oil-controlling device of door system, which is actually a kind of rotor valve of adjustable outlet, is set to hydraulic-driven dress
It sets between low-pressure system, has the function of switch valve, opening and closing moment (phase angle) can be any in a certain range
Adjustment, also has the function of accumulation of energy and sealing, and manufacture craft is simple.But the device rotor valve is with engine cylinder number
Increase, length is increase accordingly, and structure is complicated, and manufacture is difficult, and can only control the close moment for changing valve, and start-up time cannot
Control, affects its popularization and application.
Utility model content
For the above-mentioned deficiency of the prior art, the utility model provide it is a kind of can be changed electro-hydraulic valve gear entirely, not only save
Expensive high-speed electromagnetic valve, and fast response time have been removed, it is easy to control.
In order to solve the above technical problems, the following technical solution of the utility model:
It is a kind of to can be changed electro-hydraulic valve gear entirely, comprising: camshaft and valve component；Slip screw axis, sliding sleeve, piston and multiple
Position spring, the slip screw axis and the piston are slidably and sealingly connected with the sliding sleeve respectively, and the piston abuts against described
Valve assembly, in the sliding sleeve, the space between the slip screw axis and the piston forms the hydraulic cavities of sealing, described
Reset spring clamps between the slip screw axis and the piston；The slip screw axis is controlled by described convex in the axial direction
The cam surface of wheel shaft；The peripheral wall of the slip screw axis being slidably and sealingly connected with the sliding sleeve is helical form peripheral wall, the cunning
The end of dynamic helical axis is provided with the roller gear being engaged with rack, and the rack gear is held by the straight line that engine electric-controlled unit controls
The driving of row mechanism；The sliding sleeve offers top oilhole and lower part oilhole, and the top oilhole is close to the slip screw axis, institute
Lower part oilhole is stated to be connected to the low pressure oil pocket of engine respectively close to the piston, the top oilhole and the lower part oilhole,
Check valve is provided on connecting line between the lower part oilhole and the low pressure oil pocket of the engine.
Wherein, the helical form inner peripheral portion is tubulose.
Wherein, thrust bearing is provided on the end face of the roller gear, the thrust bearing is convex with the camshaft
Wear-resistant gasket is provided between wheel face.
Wherein, the rack gear is engaged with the roller gear of multiple slip screw axis simultaneously.
Wherein, the straight line executing mechanism is linear motor or execution electromagnet or cylinder or hydraulic cylinder.
The utility model after adopting the above technical scheme, its technical effect is that:
The utility model jointly controls valve motion using slip screw axis and camshaft, by rotation slip screw axis come
At the opening and closing moment for changing top oilhole, can be realized the function of fully variable valve actuator for air, when backhaul, hydraulic oil from lower part oilhole into
Enter hydraulic cavities, slip screw axis Rapid reset is made together with reset spring, machine is executed by the straight line of engine electric-controlled unit control
For structure by driving slip screw axis rotation, fast response time is easy to control, instead of expensive high-speed electromagnetic valve, is suitble to more
Cylinder engine uses.
Detailed description of the invention
Fig. 1 is the structure sectional view that the utility model can be changed electro-hydraulic valve gear embodiment entirely；
Fig. 2 is the schematic perspective view of slip screw axis in Fig. 1；
Fig. 3 is the schematic diagram for driving the gear and rack teeth mechanism of slip screw axis in embodiment illustrated in fig. 1；
In figure, 101- camshaft, 102- slip screw axis, 102A- roller gear, 102B- helical form peripheral wall, 103- cunning
Set, 104- reset spring, 105- piston, 106- valve assembly, the lower part 107- oilhole, 108- check valve, 109- low pressure oil pocket,
The top 110- oilhole；111- thrust bearing, 112- wear-resistant gasket, 113- rack gear.
Specific embodiment
The present invention will be further described with reference to the accompanying drawings and examples.
Can be changed electro-hydraulic valve gear entirely as shown in Figure 1, a kind of, slip screw axis 102 and piston 105 respectively with sliding sleeve 103
It is slidably and sealingly connected with, slip screw axis 102 is controlled by the cam surface of camshaft 101 in the axial direction, and piston 105 abuts against valve group
Part 106.
In sliding sleeve 103, the space between slip screw axis 102 and piston 105 forms the hydraulic cavities of sealing, reset spring
104 clamp between slip screw axis 102 and piston 105.Sliding sleeve 103 offers top oilhole 110 and lower part oilhole 107, on
Portion's oilhole 110 divides close to slip screw axis 102, lower part oilhole 107 close to piston 105, top oilhole 110 and lower part oilhole 107
It is not connected to the low pressure oil pocket 109 of engine, is provided on the connecting line between lower part oilhole 107 and low pressure oil pocket 107
Check valve 108.
As Fig. 2 and Fig. 3 jointly shown in, the peripheral wall of slip screw axis 102 being slidably and sealingly connected with sliding sleeve 103 is helical form
Peripheral wall 102B, the end of slip screw axis 102 are provided with the roller gear 102A engaged with rack gear 113, and rack gear 113 is by engine
The straight line executing mechanism driving of electronic control unit control, the straight line executing mechanism are mature technologies, can be linear motor or
Electromagnet or cylinder or hydraulic cylinder etc. are executed, is also that those of ordinary skill in the art institute is ripe with the connection relationship of rack gear 113 etc.
Know, this will not be repeated here.
The working principle of the utility model is that the hydraulic oil in engine low pressure oil pocket 109 can pass through top oilhole 110
It is flowed to lower part oilhole 107 in the hydraulic fluid chamber that piston/sliding sleeve/slip screw axis is formed.It is sliding under the action of camshaft 101
Dynamic helical axis 102 moves downward, when slip screw axial screw shape peripheral wall 102B blocks top oilhole 110 (at this point, due to list
Effect to valve 108, hydraulic oil can not be flowed out from lower part oilhole 107), hydraulic fluid chamber becomes a closed chamber, hydraulic
Oil pressure increases, and pushes 105 downlink of piston, and piston 105 pushes valve to move downward.
Sliding sleeve 103 is fixed, and the straight line executing mechanism drive rack 113 by engine electric-controlled unit control is mobile, in turn
Push slip screw axis 102 rotate, due to the peripheral wall of slip screw axis 102 be it is spiral helicine, the rotation of slip screw axis 102 can
The relative position of top oilhole 110 is blocked to change helical form peripheral wall 102B, to control the stroke of piston 105, and then is controlled
The opening travel size of valve.
When backhaul, hydraulic oil enters hydraulic cavities from lower part oilhole 107 by check valve 108, makes together with reset spring 104
102 Rapid reset of slip screw axis.
In the utility model, the example that Fig. 3 shows a rack gear while engaging with 6 slip screw axis 102, each cunning
The dynamic corresponding valve assembly of helical axis 102, that is, be applied to six cylinder engine, the design of the utility model can extend to 4 cylinders
Machine or 8 cylinder machines etc., the quantity of cylinder is unrestricted.
In the utility model, the part helical form peripheral wall 102B is tubulose, is also possible to open up spiral on entity axis
Slot.
In the utility model, thrust bearing 112, thrust bearing 112 and cam are provided on the end face of roller gear 102A
Wear-resistant gasket 111 is provided between the cam surface of axis 101, to reduce abrasion.
The utility model is not limited to the above embodiment, all design, principle, structure and methods based on the utility model
Made various improvement, fall within the protection scope of the utility model.
Claims (5)
1. a kind of can be changed electro-hydraulic valve gear entirely, comprising:
Camshaft and valve component；It is characterized in that, the valve gear further includes
Slip screw axis, sliding sleeve, piston and reset spring, the slip screw axis and the piston are slided with the sliding sleeve respectively
It is tightly connected, the piston abuts against the valve assembly, in the sliding sleeve, between the slip screw axis and the piston
Space form the hydraulic cavities of sealing, the reset spring clamps between the slip screw axis and the piston；
The slip screw axis is controlled by the cam surface of the camshaft in the axial direction；
The peripheral wall of the slip screw axis being slidably and sealingly connected with the sliding sleeve is helical form peripheral wall, the slip screw axis
End is provided with the roller gear being engaged with rack, and the rack gear is driven by the straight line executing mechanism that engine electric-controlled unit controls
It is dynamic；
The sliding sleeve offers top oilhole and lower part oilhole, and the top oilhole is close to the slip screw axis, the lower part
Oilhole is connected to the low pressure oil pocket of engine respectively close to the piston, the top oilhole and the lower part oilhole, described
Check valve is provided on connecting line between lower part oilhole and the low pressure oil pocket of the engine.
2. can be changed electro-hydraulic valve gear entirely as described in claim 1, which is characterized in that the helical form inner peripheral portion is tubulose
's.
3. can be changed electro-hydraulic valve gear entirely as described in claim 1, which is characterized in that be arranged on the end face of the roller gear
There is thrust bearing, is provided with wear-resistant gasket between the thrust bearing and the cam surface of the camshaft.
4. can be changed electro-hydraulic valve gear entirely as described in claim 1, which is characterized in that the rack gear simultaneously with multiple cunnings
The roller gear engagement of dynamic helical axis.
5. can be changed electro-hydraulic valve gear entirely as described in claim 1, which is characterized in that the straight line executing mechanism is straight-line electric
Machine executes electromagnet or cylinder or hydraulic cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821897595.5U CN209053651U (en) | 2018-11-16 | 2018-11-16 | It can be changed electro-hydraulic valve gear entirely |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821897595.5U CN209053651U (en) | 2018-11-16 | 2018-11-16 | It can be changed electro-hydraulic valve gear entirely |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209053651U true CN209053651U (en) | 2019-07-02 |
Family
ID=67053752
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821897595.5U Withdrawn - After Issue CN209053651U (en) | 2018-11-16 | 2018-11-16 | It can be changed electro-hydraulic valve gear entirely |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209053651U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109339896A (en) * | 2018-11-16 | 2019-02-15 | 潍坊力创电子科技有限公司 | It can be changed electro-hydraulic valve gear entirely |
| WO2021136225A1 (en) * | 2020-01-04 | 2021-07-08 | 潍坊力创电子科技有限公司 | Fully variable electro-hydraulic valve system having buffering function |
-
2018
- 2018-11-16 CN CN201821897595.5U patent/CN209053651U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109339896A (en) * | 2018-11-16 | 2019-02-15 | 潍坊力创电子科技有限公司 | It can be changed electro-hydraulic valve gear entirely |
| CN109339896B (en) * | 2018-11-16 | 2023-08-25 | 潍坊力创电子科技有限公司 | Full-variable liquid valve device |
| WO2021136225A1 (en) * | 2020-01-04 | 2021-07-08 | 潍坊力创电子科技有限公司 | Fully variable electro-hydraulic valve system having buffering function |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20190702 Effective date of abandoning: 20230825 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20190702 Effective date of abandoning: 20230825 |
|
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |