CN104343486A - Variable valve lift device - Google Patents
Variable valve lift device Download PDFInfo
- Publication number
- CN104343486A CN104343486A CN201310320457.6A CN201310320457A CN104343486A CN 104343486 A CN104343486 A CN 104343486A CN 201310320457 A CN201310320457 A CN 201310320457A CN 104343486 A CN104343486 A CN 104343486A
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- CN
- China
- Prior art keywords
- valve
- cam
- lever
- valve lift
- slide block
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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.)
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Abstract
The invention discloses a variable valve lift device. The variable valve lift device comprises a valve arranged in the air passage of a cylinder cover, a cam synchronously rotating along with an engine crankshaft, and a valve spring which sleeves the valve, an upper spring seat is arranged at the upper end of the valve spring, the valve is firmly connected with the upper spring seat, a lever is arranged between the cam and the upper end of the valve, the cam and the upper end of the valve are respectively located below two ends of the lever, and a sliding pivot component sleeves the lever between the cam and the valve. The variable valve lift device realizes to control the valve lift through arranging the lever with adjustable pivot position, the structure is simple, the control is facilitated, the pumping loss of an engine is reduced, and the fuel oil consumption of the engine is reduced.
Description
Technical field
The invention belongs to motor and manufacture field, specifically a kind of variable air valve lift apparatus.
Background technique
Engine valve in most of the cases all opens and closes under fixing actuated by cams, and the valve event obtained is trading off under the high rotating speed and the slow-speed of revolution of motor between engine valve event time requirement.In original structure, all there is pump and inhale the shortcoming that loss is large, fuel loss is large.Recently, be used for regulating and put into production by the determined advance/retard mechanism of fixing inverted cam axle, it can strengthen the performance of motor.These devices are equally simple at cam phase variable device, and they can control the Angle Position of cam relative to actuated by cams sprocket wheel and cam lobe switch.
Compared with the naturally aspirated engine of fixing timing, the motor output facet of these variable cam timing system in wider engine speed range provides the effect significantly strengthened, and EGR when functionally can replace partial throttling controls valve.On the one hand, they do not possess sufficient valve timing function can save engine air throttle.Electro-hydraulic and pneumatic door control system that is electromagnetism has the potentiality allowing to realize non-air throttle engine really, but, these systems are prototyping system strictly speaking, also have the difficult problem in a large amount of cost, packaging and energy balance to need to overcome before they are produced.
The patent No. is CN200810026081.7, name is called that " variable air valve lift apparatus " discloses a kind of valve lift apparatus, well solves above-mentioned technical problem.
Summary of the invention
The problem to be solved in the present invention is to provide a kind of variable air valve lift apparatus controlling valve lift size.
For solving the problems of the technologies described above, the present invention by the following technical solutions:
A kind of variable air valve lift apparatus, comprise the valve be installed in cylinder-head port, with the cam of engine crankshaft synchronous axial system and be placed on laterostigmatal valve spring, valve spring upper end is provided with a spring seat of honour, valve is fixedly connected with the spring seat of honour, a lever is provided with between cam and valve upper end, cam and valve upper end lay respectively at below these lever two ends, and on the lever between cam and valve, cover has a slidably fulcrum assembly.
As the improvement to such scheme, described fulcrum assembly comprises an activity and is placed on sliding sleeve on lever, and this sliding sleeve is installed on the slide block of a line slide rail by a movable axis, and this slide block realizes translation slip by a control piece.
Wherein, described control piece is the cylinder parallel with line slide rail, and the piston rod of this cylinder is connected with slide block and promotes slide block and moves.
The present invention reaches by setting up the adjustable lever of a position of the fulcrum object controlling valve lift size, and structure is simple, and it is convenient to control, and decreases engine pump and inhales loss, reduce engine fuel consumption.
Accompanying drawing explanation
Accompanying drawing 1 is embodiment of the present invention structural representation.
Embodiment
For the ease of the understanding of those skilled in the art, below in conjunction with specific embodiment and accompanying drawing to this
Invention structural principle is described in further detail:
The present invention is the improvement to existing variable air valve lift apparatus, can control the lift condition of valve, and make changeable air valve applicability stronger, application area is wider.
Specifically as shown in Figure 1.The variable air valve lift apparatus that the present embodiment discloses comprise the valve 2 be installed in cylinder-head port, with the cam 1 of engine crankshaft synchronous axial system and the valve spring 3 that is placed on valve 2, valve spring 3 upper end is provided with a spring seat of honour 4, valve 2 is fixedly connected with the spring seat of honour 4, and, a lever 5 is provided with between cam 1 and valve 2 upper end, cam 1 and valve 2 upper end lay respectively at below these lever 5 two ends, the lever between cam 1 and valve 2 overlaps and has a slidably fulcrum assembly 6.
In the present embodiment, described fulcrum assembly 6 comprises an activity and is placed on sliding sleeve 61 on lever 5, and this sliding sleeve 61 is installed on the slide block of a line slide rail 63 by a movable axis 62, and this slide block realizes translation slip by a control piece 64.Wherein, described control piece 64 is the cylinder parallel with line slide rail 63, and the piston rod of this cylinder is connected with slide block and promotes slide block and moves.Certainly, this control piece also can be motor.
During work, cam 1 upwards pushes up lever 5 end, and the other end of lever 5 then presses down valve 2.When needing adjustment (adjusting) lever 5 to press down the stroke of valve 2, only needing sliding sleeve 61 position in sliding fulcrum assembly 6, both only need change the ratio of the distance of cam 1 to sliding sleeve 61 and the distance of sliding sleeve 61 to valve 2.When increasing the stroke pressing down valve 2 as needed, then to cam 1 direction moving sliding sleeve 61, this ratio being diminished, during as the stroke pressing down valve 2 need be reduced, then to valve 2 direction moving sliding sleeve 61, making this ratio become large.
Above-mentioned eight embodiments are only the present invention's more preferably embodiment; in addition; under there is the prerequisite of same idea with the present invention; concrete structure of the present invention also has a lot of mapping mode; it should be noted that; under the prerequisite not departing from the present invention's design, any apparent replacement is all within scope.
Claims (3)
1. a variable air valve lift apparatus, comprise the valve (2) be installed in cylinder-head port, with the cam (1) of engine crankshaft synchronous axial system and be placed on laterostigmatal valve spring (3), valve spring upper end is provided with a spring seat of honour (4), valve is fixedly connected with the spring seat of honour, it is characterized in that: between cam and valve upper end, be provided with a lever (5), cam and valve upper end lay respectively at below these lever two ends, and on the lever between cam and valve, cover has a slidably fulcrum assembly (6).
2. variable air valve lift apparatus according to claim 1, it is characterized in that: described fulcrum assembly comprises an activity and is placed on sliding sleeve (61) on lever, this sliding sleeve is installed on the slide block of a line slide rail (63) by a movable axis (62), and this slide block realizes translation slip by a control piece (64).
3. variable air valve lift apparatus according to claim 2, is characterized in that: described control piece is the cylinder parallel with line slide rail, and the piston rod of this cylinder is connected with slide block and promotes slide block and moves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310320457.6A CN104343486A (en) | 2013-07-29 | 2013-07-29 | Variable valve lift device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310320457.6A CN104343486A (en) | 2013-07-29 | 2013-07-29 | Variable valve lift device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104343486A true CN104343486A (en) | 2015-02-11 |
Family
ID=52499858
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310320457.6A Withdrawn CN104343486A (en) | 2013-07-29 | 2013-07-29 | Variable valve lift device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104343486A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106837465A (en) * | 2016-12-30 | 2017-06-13 | 浙江大学 | The engine valve actuating mechanism of stepless variable valve lift |
| CN110080852A (en) * | 2019-05-14 | 2019-08-02 | 福泰动力有限公司 | A kind of valve stroke regulating device and engine |
| CN114033521A (en) * | 2021-12-13 | 2022-02-11 | 南通职业大学 | Double-cam variable valve timing mechanism |
-
2013
- 2013-07-29 CN CN201310320457.6A patent/CN104343486A/en not_active Withdrawn
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106837465A (en) * | 2016-12-30 | 2017-06-13 | 浙江大学 | The engine valve actuating mechanism of stepless variable valve lift |
| CN110080852A (en) * | 2019-05-14 | 2019-08-02 | 福泰动力有限公司 | A kind of valve stroke regulating device and engine |
| CN114033521A (en) * | 2021-12-13 | 2022-02-11 | 南通职业大学 | Double-cam variable valve timing mechanism |
| CN114033521B (en) * | 2021-12-13 | 2023-12-22 | 南通职业大学 | Double-cam variable valve timing mechanism |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C04 | Withdrawal of patent application after publication (patent law 2001) | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20150211 |