CN101215978A - Engine air valve controlling mechanism - Google Patents
Engine air valve controlling mechanism Download PDFInfo
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- CN101215978A CN101215978A CNA2007103025119A CN200710302511A CN101215978A CN 101215978 A CN101215978 A CN 101215978A CN A2007103025119 A CNA2007103025119 A CN A2007103025119A CN 200710302511 A CN200710302511 A CN 200710302511A CN 101215978 A CN101215978 A CN 101215978A
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- valve
- oil
- hydraulic jack
- controlling mechanism
- engine air
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Abstract
The invention relates to the engine distribution field, in particular to an engine valve control mechanism. The invention comprises an oil pump (1) driven by an engine crankshaft. The oil outlet end of the oil pump (1) is provided with a one-way valve (2). The oil outlet end of the one-way valve (2) is connected with the oil inlet end of an electromagnetic valve or an electromagnetic valve group (4). The oil outlet end of the electromagnetic valve or the electromagnetic valve group (4) is connected with a control device to control the lift range of an engine valve and a tank, respectively. As the invention cancels a cam mechanism and a timing transmission system in the traditional engine valve mechanism, the structure of the invention is simple; mechanical loss is reduced; gas distribution is optimized; desirable valve timing and valve lift range are achieved; economical efficiency and dynamic property of fuel of the engine are improved.
Description
Technical field
The present invention relates to the engines distribution field, be specifically related to a kind of engine air valve controlling mechanism.
Background technique
Existing engine valve actuating mechanism mostly is by camshaft, rocking arm, and mechanisms such as hydraulic tappet form.Bent axle drives air inlet and the exhaust that camshaft is realized motor by belt or chain in the working procedure.If can also being optimized by the intake and exhaust of Variable Valve Time gear to motor of Variable Valve Time gear is installed, thus the fuel economy and the power character of raising motor.
But these traditional engine valve actuating mechanism component are more, and mechanism is relative complex also, thereby causes rate of fault higher.Though can adjust the port timing of motor by Variable Valve Time gear, optimize intake and exhaust, can not change the valve lift of motor.Change the valve lift of motor, will realize by the methods such as molded lines that change cam, structure is also just complicated more.
Summary of the invention
It is comparatively simple to the purpose of this invention is to provide a kind of structure, the engine air valve controlling mechanism that valve-control and valve lift are all variable.
For achieving the above object, the present invention has adopted following technological scheme: a kind of engine air valve controlling mechanism, the present invention includes oil pump by the engine crankshaft transmission, the oil outlet end of oil pump is provided with one-way valve, the oil outlet end of one-way valve links to each other with the oil inlet end of solenoid valve or electromagnetic valve group, and the oil outlet end of solenoid valve or electromagnetic valve group links to each other with the control gear of fuel tank with the control valve lift respectively.
As shown from the above technical solution, the present invention has utilized the correlation of engine speed and oil pump pump oil mass, because the rotating speed difference of motor under different operating modes, the rotating speed of oil pump is also just different, bring the variation of oil pump pump oil mass thus, and then control the lift of valve by control gear; The present invention also controls the valve timing of motor constantly by the opening and closing of solenoid valve, thereby realizes that valve-control is variable.The present invention is owing to cam mechanism and the timing transmission system cancelled in traditional engine valve actuating mechanism, therefore it is simple in structure, has reduced mechanical loss, has optimized distribution, reach desirable port timing and valve lift, improved the fuel economy and the power character of motor.
Description of drawings
Fig. 1 is a system architecture schematic representation of the present invention;
Fig. 2 is an another kind of system architecture schematic representation of the present invention.
Embodiment
As shown in Figure 1, 2, a kind of engine air valve controlling mechanism, the present invention includes oil pump 1 by the engine crankshaft transmission, the oil outlet end of oil pump 1 is provided with one-way valve 2, the oil outlet end of one-way valve 2 links to each other with the oil inlet end of solenoid valve or electromagnetic valve group 4, and the oil outlet end of solenoid valve or electromagnetic valve group 4 links to each other with fuel tank with the control gear of control valve lift respectively.
Because engine speed is influential to the oil pump rotating speed, the pump oil mass was big when rotating speed was high, the pump oil mass was little when rotating speed was low, the present invention utilizes this relation that the oil that oil pump pumps is come the control gear of drive controlling valve lift by solenoid valve or electromagnetic valve group 4, the keying of this control gear and solenoid valve or electromagnetic valve group 4 matches, thereby realizes the valve lift and the valve phase variable of distribution device.
The control gear of control valve lift can have multiple implementation method, as the employing hydraulic way, or adopts sensor to go out the pressure of pump oil, and then passes through ECU unit controls pinion and rack change valve lift.
As preferred version of the present invention, described control gear comprises that the control gear of described control valve lift comprises hydraulic jack 5, offer spacing relief hole 6 on the cylinder body of hydraulic jack 5, hydraulic jack 5 inside be provided with oil cylinder inner wall be the piston supporting plate 7 that is slidingly matched, the back of the body pasta of piston supporting plate 7 links to each other with the masthead of valve 9, the axis of valve 9 is with the parallel axes of cylinder or overlap, the head of valve 9 stretches out the outside at hydraulic jack 5, one end of described piston supporting plate 7 is provided with Returnning spring 8, as shown in Figure 1, 2.
From the above, in the engine operation process, the hydraulic oil that is transmitted by solenoid valve or electromagnetic valve group 4 injects hydraulic jack 5, and then promotion piston supporting plate 7 moves downward, piston supporting plate 7 promotes valve 9 again and moves downward, valve 9 is opened, offer spacing relief hole 6 on the cylinder body of hydraulic jack 5, maximum lift with restriction valve 9, when valve 9 will be closed, valve 9 was taken a seat under the effect of Returnning spring 8, because the machine oil in the hydraulic jack 5 is to the inhibition of piston supporting plate 7, valve 9 is taken a seat steadily, has avoided strong impact.
As the present invention's preferred version further, the two ends of described Returnning spring 8 is separately fixed on the base plate of the back of the body pasta of piston supporting plate 7 and hydraulic jack 5, and Returnning spring 8 is set in the end that valve 9 is positioned at hydraulic jack 5 inboards.
This arrangement can so that Returnning spring 8 avoid being arranged in the machine oil, thereby can avoid the impact and the interference of machine oil, also ensured the safe operation of machine oil simultaneously, help the proper functioning of whole system.
As preferred version of the present invention, described electromagnetic valve group 4 comprises the control electromagnetic valve 4A and the oil return solenoid valve 4B of mutual parallel connection, the oil outlet end of control electromagnetic valve 4A with control valve lift control gear link to each other, oil return solenoid valve 4B is connected with fuel tank, as shown in Figure 2.
Below in conjunction with Fig. 2 implementation procedure of the present invention is further introduced:
In the engine operation process, machine oil flows to electromagnetic valve group 4 through oil pump 1 by one-way valve 2, valve 9 is when operating position, there is not oil pressure in the hydraulic jack 5, at this moment oil return solenoid valve 4B opens, control electromagnetic valve 4A is in closed state, after the direct oil return of return opening, valve 9 is in closed state under the elastic force effect of Returnning spring 8 through one-way valve 2 for oil that oil pump 1 pumps.
When engine valve 9 needs to open, oil return solenoid valve 4B closure, control electromagnetic valve 4A opens, machine oil will inject hydraulic jack 5 under the effect of oil pump 1, owing in the oil circuit one-way valve 2 is housed, so the oil mass in the hydraulic jack 5 can be on the increase, oil pressure also can constantly raise, and act on the piston supporting plate 7 in the hydraulic jack 5, thereby overcome the elastic force effect of Returnning spring 8, promote downwards to open valve 9, offer spacing relief hole 6 on the cylinder body of hydraulic jack 5, with the maximum lift of restriction valve 9.
When valve 9 needs closure, oil return solenoid valve 4B and control electromagnetic valve 4A open simultaneously, oil pressure in the hydraulic jack 5 descends, valve 9 is taken a seat under the elastic force effect of Returnning spring 8, because the machine oil in the hydraulic jack 5 is to the inhibition of piston supporting plate 7, valve 9 is taken a seat steadily, has avoided strong impact.
From the above, control procedure is as long as control the opening and closing moment of oil return solenoid valve 4B and control electromagnetic valve 4A, with regard to the opening and closing time of may command valve 9.
As another kind of preferred version of the present invention, described solenoid valve 4 is a 3-position-3-way solenoid valve.When adopting 3-position-3-way solenoid valve, the process when operation of the present invention and employing oil return solenoid valve 4B and control electromagnetic valve 4A is just the same, but owing to only adopted a valve just can realize purpose of the present invention this moment, so reduced cost.Certainly solenoid valve 4 also can adopt three-position four-way valve or three position five-way valve, but this moment, cost was higher.
As shown in Figure 1, 2, be provided with pressure regulator valve 3 between described one-way valve 2 and solenoid valve or the electromagnetic valve group 4.
Claims (7)
1. engine air valve controlling mechanism, it is characterized in that: the present invention includes oil pump (1) by the engine crankshaft transmission, the oil outlet end of oil pump (1) is provided with one-way valve (2), the oil outlet end of one-way valve (2) links to each other with the oil inlet end of solenoid valve or electromagnetic valve group (4), and the oil outlet end of solenoid valve or electromagnetic valve group (4) links to each other with fuel tank with the control gear of control valve lift respectively.
2. engine air valve controlling mechanism according to claim 1 is characterized in that: the control gear of described control valve lift is hydraulic jack (5), and the oil outlet end of solenoid valve or electromagnetic valve group (4) links to each other with fuel tank with hydraulic jack (5) respectively.
3. engine air valve controlling mechanism according to claim 1 is characterized in that: described solenoid valve (4) is a 3-position-3-way solenoid valve.
4. engine air valve controlling mechanism according to claim 1 is characterized in that: be provided with pressure regulator valve (3) between described one-way valve (2) and solenoid valve or the electromagnetic valve group (4).
5. engine air valve controlling mechanism according to claim 1, it is characterized in that: described electromagnetic valve group (4) comprises the control electromagnetic valve (4A) and the oil return solenoid valve (4B) of mutual parallel connection, the oil outlet end of control electromagnetic valve (4A) links to each other with the control gear of control valve lift, and oil return solenoid valve (4B) is connected with fuel tank.
6. engine air valve controlling mechanism according to claim 2, it is characterized in that: offer spacing relief hole (6) on the cylinder body of described hydraulic jack (5), hydraulic jack (5) inside be provided with oil cylinder inner wall be the piston supporting plate (7) that is slidingly matched, the back of the body pasta of piston supporting plate (7) links to each other with the masthead of valve (9), the axis of valve (9) is with the parallel axes of cylinder or overlap, the head of valve (9) stretches out in the outside of hydraulic jack (5), and an end of described piston supporting plate (7) is provided with Returnning spring (8).
7. engine air valve controlling mechanism according to claim 6, it is characterized in that: the two ends of described Returnning spring (8) is separately fixed on the base plate of the back of the body pasta of piston supporting plate (7) and hydraulic jack (5), and Returnning spring (8) is set in valve (9) and is positioned at the inboard end of hydraulic jack (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007103025119A CN101215978A (en) | 2007-12-26 | 2007-12-26 | Engine air valve controlling mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007103025119A CN101215978A (en) | 2007-12-26 | 2007-12-26 | Engine air valve controlling mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101215978A true CN101215978A (en) | 2008-07-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007103025119A Pending CN101215978A (en) | 2007-12-26 | 2007-12-26 | Engine air valve controlling mechanism |
Country Status (1)
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| CN (1) | CN101215978A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103670541A (en) * | 2013-12-31 | 2014-03-26 | 淄博桑特动力设备有限公司 | Oil feeding device for self starting of steam turbine |
| CN103850746A (en) * | 2014-02-28 | 2014-06-11 | 天津大学 | Variable valve lift device based on movable cam |
| CN103850736A (en) * | 2014-02-28 | 2014-06-11 | 天津大学 | Gear-type variable valve device based on split cam |
| CN103850745A (en) * | 2014-02-28 | 2014-06-11 | 天津大学 | Plunger-type variable valve device based on split cam |
| CN104265393A (en) * | 2014-07-25 | 2015-01-07 | 贵州大学 | Novel variable valve timing system |
| WO2015035856A1 (en) * | 2013-09-10 | 2015-03-19 | Xie Qingsheng | Regulating method and apparatus for independently and continuously variable valve timing and valve lift |
| CN104791043A (en) * | 2015-04-23 | 2015-07-22 | 哈尔滨工程大学 | Valve electro-hydraulic driving system and method for achieving Miller cycle of engine |
| CN112211689A (en) * | 2020-10-14 | 2021-01-12 | 天津大学 | Control method of electro-hydraulic fully-variable valve mechanism based on distribution cam |
-
2007
- 2007-12-26 CN CNA2007103025119A patent/CN101215978A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015035856A1 (en) * | 2013-09-10 | 2015-03-19 | Xie Qingsheng | Regulating method and apparatus for independently and continuously variable valve timing and valve lift |
| CN103670541A (en) * | 2013-12-31 | 2014-03-26 | 淄博桑特动力设备有限公司 | Oil feeding device for self starting of steam turbine |
| CN103850746A (en) * | 2014-02-28 | 2014-06-11 | 天津大学 | Variable valve lift device based on movable cam |
| CN103850736A (en) * | 2014-02-28 | 2014-06-11 | 天津大学 | Gear-type variable valve device based on split cam |
| CN103850745A (en) * | 2014-02-28 | 2014-06-11 | 天津大学 | Plunger-type variable valve device based on split cam |
| CN103850745B (en) * | 2014-02-28 | 2015-11-04 | 天津大学 | A kind of plunger type variable valve gear based on split cam |
| CN103850736B (en) * | 2014-02-28 | 2016-03-30 | 天津大学 | A kind of gear type variable valve gear based on split cam |
| CN104265393A (en) * | 2014-07-25 | 2015-01-07 | 贵州大学 | Novel variable valve timing system |
| CN104791043A (en) * | 2015-04-23 | 2015-07-22 | 哈尔滨工程大学 | Valve electro-hydraulic driving system and method for achieving Miller cycle of engine |
| CN112211689A (en) * | 2020-10-14 | 2021-01-12 | 天津大学 | Control method of electro-hydraulic fully-variable valve mechanism based on distribution cam |
| CN112211689B (en) * | 2020-10-14 | 2022-03-29 | 天津大学 | Control method of electro-hydraulic fully-variable valve mechanism based on distribution cam |
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Open date: 20080709 |