CN106285825A - A kind of stepless variable valve lift device - Google Patents
A kind of stepless variable valve lift device Download PDFInfo
- Publication number
- CN106285825A CN106285825A CN201610995795.3A CN201610995795A CN106285825A CN 106285825 A CN106285825 A CN 106285825A CN 201610995795 A CN201610995795 A CN 201610995795A CN 106285825 A CN106285825 A CN 106285825A
- Authority
- CN
- China
- Prior art keywords
- electromotor
- cam
- valve
- wheel shaft
- convex wheel
- 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.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L13/00—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L9/00—Valve-gear or valve arrangements actuated non-mechanically
- F01L9/10—Valve-gear or valve arrangements actuated non-mechanically by fluid means, e.g. hydraulic
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L9/00—Valve-gear or valve arrangements actuated non-mechanically
- F01L9/20—Valve-gear or valve arrangements actuated non-mechanically by electric means
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Valve Device For Special Equipments (AREA)
Abstract
Present invention is generally directed to explosive motor, it is provided that a kind of simple in construction, cost rationally, electromotor can be realized under height different rotating speeds, the stepless variable device of valve stroke.This device can be under higher engine speeds, to the stroke that valve is bigger, the air inflow of greater engine, under the electromotor relatively slow-speed of revolution, to the stroke that valve is less, in being so conducive to increasing cylinder, turbulent flow improves burning velocity, increases the low speed torque of electromotor, this technology can comprehensively improve the work efficiency of electromotor, reaches the mesh ground of energy-saving and emission-reduction.One stepless variable valve lift mechanism of the present invention, it is characterized in that having surface cam (7), with matched circular arc cam bearing (3), have its surface cam telescoping mechanism (8) and inclined convex wheel shaft (4) position can be adjusted according to the working condition of electromotor, accomplish uninterrupted, without the variable adjustment of valve mechanism lift of ladder.
Description
Technical field
The present invention relates to a kind of engine valve device, particularly relate to a kind of stepless variable valve lift that can realize
Device.
Background technology
The automobile pollution of China in 2016 is up to 300,000,000, and increasing automobile will bring more exhaust emissions,
And present most of automobile does not use lift range variable technology.Lift range variable technology can turn in electromotor difference
Speed is lower mates suitable valve stroke so that under the slow-speed of revolution, moment of torsion is abundant, and during high rotating speed, horsepower is powerful.During the slow-speed of revolution, system makes
By less valve stroke, in being so conducive to increasing cylinder, turbulent flow improves burning velocity, increases the low speed torque of electromotor, and high
Use bigger valve stroke then can significantly improve air inflow during rotating speed, and then power when promoting high rotating speed exports, and improves
Efficiency can allow electromotor more energy-conserving and environment-protective.How to provide high efficiency, low cost, constitutionally stable changeable air valve to electromotor
Lift device is the technical background of the present invention.
Summary of the invention
The technical problem to be solved in the present invention is, for explosive motor provide a kind of simple in construction, with low cost, can realize
The device of stepless variable valve lift.This technology can be under higher engine speeds, to the stroke that valve is bigger, greater engine
Air inflow, under the electromotor relatively slow-speed of revolution, to the stroke that valve is less, be so conducive to increasing turbulent flow in cylinder and improve burning speed
Degree, increases the low speed torque of electromotor, and this device can improve the work efficiency of electromotor, reaches the mesh ground of energy-saving and emission-reduction.
Technical scheme
Stepless variable valve lift device of the present invention, it is provided that a kind of surface cam mechanism (7) that can translate, this mechanism coordinates
The circular arc cam bearing (3) being pressed downward against, it is possible to achieve electromotor under height different rotating speeds, the stepless variable of valve stroke.
In FIG, technical side's figure that the present invention takes is, cam surface is the cam (7) on little inclined-plane, big one end, one end, with
Circular arc cam bearing is cam engagement (3).Surface cam (7) rigidly fixes with inclined convex wheel shaft (4), inclined convex wheel shaft (4) with
Surface cam shaft stool (6) links with sliding bearing connected mode, and surface cam shaft stool (6) is fixing with electromotor to be connected, tiltedly
Face cam axle (4) and surface cam shaft stool (6) can rotate and translational motion.Inclined convex wheel shaft (4) and surface cam
Axle driving wheel (5) is that spline connects.It is connected for bearing between inclined convex wheel shaft (4) with inclined convex wheel shaft telescoping mechanism (8), can be real
Existing inclined convex wheel shaft (4) rotates, and camshaft telescoping mechanism (8) does not rotates, and camshaft telescoping mechanism (8) has Telescopic, can
To be hydraulic pressure or motor mode, camshaft telescoping mechanism (8) can drive inclined convex wheel shaft (4) to move in parallel, and camshaft stretches
The shell of mechanism (8) is fixing with electromotor to be connected.Base (1) is directly or indirectly connected with valve stem, the compression bullet of valve stem
Spring provides upwards active force for base, makes circular arc cam bearing (3) keep contacting with surface cam (7).Circular arc cam bearing
(3) being connected in bearing mode with circular arc cam bearing axle (9), circular arc cam bearing axle (9) is fixing with the support of bearing (2) to be connected.
The support of bearing (2) is fixing with base (1) to be connected.
The technology beneficial effect of the present invention has, relative to the lift range variable technology of other producers, present configuration letter
Single, cheap, all parts can be completely achieved production domesticization.This technology can be bigger to valve under higher engine speeds
Stroke, the air inflow of greater engine, under the electromotor relatively slow-speed of revolution, to the stroke that valve is less, so be conducive to increasing cylinder
Interior turbulent flow improves burning velocity, increases the low speed torque of electromotor, and this device can improve the work efficiency of electromotor, reaches energy-conservation
The mesh ground reduced discharging.
Accompanying drawing explanation
Fig. 1 is the mechanical construction drawing of the present invention.
Fig. 2 is the enforcement mechanical construction drawing of the present invention.
Fig. 3 is inclined convex wheel shaft part drawing of the present invention.
1. bases in Fig. 1,2. base support, 3. circular arc cam bearing, 4. inclined convex wheel shaft, 5. inclined convex wheel shaft drives
Driving wheel, 6. surface cam shaft stool, 7. surface cam, 8. camshaft telescoping mechanism, 9. circular arc cam bearing axle.
Detailed description of the invention
Embodiment 1:
As it is shown in figure 1, stepless variable valve lift device of the present invention, structure includes the control machine of stepless variable valve lift device
Structure, and stepless variable valve lift device cam generating mechanism.
When the engine starts, the timing chain of electromotor drives inclined convex wheel shaft driving wheel (5) to rotate, inclined convex wheel shaft
Driving wheel (5) is that spline is connected with inclined convex wheel shaft (4), thus drives surface cam (7) to rotate.Surface cam (7) and circular arc
Camshaft bearing (3) is by the elastic force of valve spring, and the two remains laminating.Surface cam (7) rotates and drives circular arc cam bearing
(3) rotate, when transporting prominent high point and surface cam (7) joint of surface cam (7), circular arc cam bearing (3) can be pressed
Going down, circular arc cam bearing (3) drives base (1) to move down, and base (1) is directly or indirectly connected with valve stem, thus
Realize engine valve to open, when the operating of surface cam (7) lowest order extremely contacts with circular arc cam bearing (3), valve machine
Structure is closed.
Shown in Fig. 2, engine start or time in the case of the slow-speed of revolution, the air inflow of needs is fewer, and vehicle-mounted computer gives
Camshaft telescoping mechanism (8) contraction signal, camshaft telescoping mechanism (8) drives inclined convex wheel shaft (4) to be moved to the left, surface cam
(7) shorter ledge contacts with circular arc cam bearing (3), and produced downward valve stroke is less, for electromotor
Less air inflow is provided.
Shown in Fig. 1, when electromotor is in higher rotation speed situation, the air inflow of needs is the most, and vehicle-mounted computer gives cam
Axle telescoping mechanism (8) stretches out signal, and camshaft telescoping mechanism (8) drives inclined convex wheel shaft (4) to move right, surface cam (7)
Longer ledge contact with circular arc cam bearing (3), produced downward valve stroke is relatively big, provides for electromotor
Bigger air inflow.
Electromotor is from the slow-speed of revolution to during high-revolving, and vehicle-mounted computer can be carried out according to the concrete rotating speed of electromotor
Adjusting the flexible stroke of camshaft telescoping mechanism (8), its process can be free of discontinuities, without the gas optimal for electromotor offer of ladder
Door lift amount.
Claims (5)
1. a stepless variable valve lift device, is characterized in that having the surface cam (7) that big one end, one end is little, and joins therewith
The circular arc cam bearing (3) of set, has surface cam telescoping mechanism (8) this mechanism rotating speed according to electromotor, adjusts inclined convex
Wheel shaft (4) protrudes the position that high point contacts with circular arc cam bearing (3), controls valve stroke stepless variable.
Stepless variable valve lift device the most according to claim 1, it is characterised in that: described surface cam (7) is with oblique
Face cam axle (4) rigidly fixes, and inclined convex wheel shaft (4) links with sliding bearing connected mode, tiltedly with surface cam shaft stool (6)
Face cam shaft stool (6) is fixing with electromotor to be connected.
3. inclined convex wheel shaft (4) uses spline to be connected with inclined convex wheel shaft driving wheel (5).
4. between inclined convex wheel shaft (4) with inclined convex wheel shaft telescoping mechanism (8), use bearing to be connected.
5. camshaft telescoping mechanism (8) shell is fixing with electromotor is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610995795.3A CN106285825A (en) | 2016-11-12 | 2016-11-12 | A kind of stepless variable valve lift device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610995795.3A CN106285825A (en) | 2016-11-12 | 2016-11-12 | A kind of stepless variable valve lift device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106285825A true CN106285825A (en) | 2017-01-04 |
Family
ID=57721311
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610995795.3A Pending CN106285825A (en) | 2016-11-12 | 2016-11-12 | A kind of stepless variable valve lift device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106285825A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110145380A (en) * | 2019-04-17 | 2019-08-20 | 刘丰军 | A kind of engine and its electrodeless variable valve gear |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005207417A (en) * | 2003-12-26 | 2005-08-04 | Honda Motor Co Ltd | Valve system for engine |
| CN2913619Y (en) * | 2006-04-14 | 2007-06-20 | 江门市硕普科技开发有限公司 | Engine self-adaptive spiracle phase apparatus |
| EP1947301A2 (en) * | 2003-03-29 | 2008-07-23 | Hydraulik-Ring Gmbh | Variable valve lift device for the lift adjustment of gas-exchange valves of an internal combustion engine |
| CN103216291A (en) * | 2013-04-28 | 2013-07-24 | 长城汽车股份有限公司 | Air valve lifting device for engine, engine comprising same, and automobile comprising same |
-
2016
- 2016-11-12 CN CN201610995795.3A patent/CN106285825A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1947301A2 (en) * | 2003-03-29 | 2008-07-23 | Hydraulik-Ring Gmbh | Variable valve lift device for the lift adjustment of gas-exchange valves of an internal combustion engine |
| JP2005207417A (en) * | 2003-12-26 | 2005-08-04 | Honda Motor Co Ltd | Valve system for engine |
| CN2913619Y (en) * | 2006-04-14 | 2007-06-20 | 江门市硕普科技开发有限公司 | Engine self-adaptive spiracle phase apparatus |
| CN103216291A (en) * | 2013-04-28 | 2013-07-24 | 长城汽车股份有限公司 | Air valve lifting device for engine, engine comprising same, and automobile comprising same |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110145380A (en) * | 2019-04-17 | 2019-08-20 | 刘丰军 | A kind of engine and its electrodeless variable valve gear |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170104 |
|
| WD01 | Invention patent application deemed withdrawn after publication |