CN101397921A - Electric driving fully variable valve actuator for air-powered engine - Google Patents
Electric driving fully variable valve actuator for air-powered engine Download PDFInfo
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- CN101397921A CN101397921A CNA2008101219538A CN200810121953A CN101397921A CN 101397921 A CN101397921 A CN 101397921A CN A2008101219538 A CNA2008101219538 A CN A2008101219538A CN 200810121953 A CN200810121953 A CN 200810121953A CN 101397921 A CN101397921 A CN 101397921A
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Abstract
The invention relates to an intake and exhaust valve mechanism of an engine, which aims at providing a fully variable valve mechanism that can continuously regulate the valve timing and lifting of an air-actuating engine by controlling the power supply connection and disconnection of an electromagnetic valve. The mechanism comprises a valve body, a valve core and valve-body end caps arranged at the two ends of the valve body; the valve core is provided with two end parts and a connecting part arranged between the two end parts; the two end parts of the valve core divide the interior of the valve body into three chambers; a limit spring is arranged between the two end parts of the valve body and the valve-body end caps respectively; a two-position three-way electromagnetic valve that is communicated with the air and controls gas and the chambers of the valve body is arranged on the valve-body end caps; and the two sides of the valve body are respectively provided with an air inlet and an air outlet. The valve realizes the decoupling of movement of the valve of the air-actuating engine and the rotating speed of a crankshaft, reduces the air intake throttling loss, can realize braking energy recycling in the working mode of an air compressor and adjust the braking strength quite conveniently during the recycling process, and has fast responding speed of the opening and closing of the main valve core and simple and compact structure.
Description
Technical field
The present invention relates to a kind of motor with inlet and outlet door mechanism, more particularly, the present invention relates to a kind of the power on/off valve timing of adjusting air motor and the fully variable valve actuator for air of lift continuously constantly that can be by control electromagnetic valve.
Background technique
Constantly soar and the fuel-engined vehicle environmental pollution of fuel price constantly increase the weight of to make countries in the world all stepping up to research and develop new-energy automobile.Air motor, does not need to consume petroleum as working medium with pressurized air and liquid nitrogen in the course of the work, can realize zero-emission, is a kind of developing direction.The characteristics of air motor high pressure admission make it can not continue to use the camshaft-valve type distribution device of traditional combustion engine.Gas motor major impetus source is from the pressurized gas that enter cylinder, and its payload mainly is to realize by the amount that adjusting enters the air of cylinder.Rationally the intake and exhaust phase place of control air motor helps improving air motor power character and Economy.The air motor rotary valve induction device that conventional camshaft-actuated valve system and China Patent No. [02160723.0] are proposed all can not be realized this function.In order to improve the performance of air motor, realize that air motor reclaims the mode of operation of vehicle braking energy, must a kind of air motor fully variable valve actuator for air of development.
The variable valve actuation mode of motor comprises cam drive, Electromagnetic Drive, the driving of electric liquid, electric driving etc. at present.Because it is big and speed of response is fast that air motor has an intake and exhaust flow, and itself there is high-pressure air source in the pneumatic power system, and electric driving mode is more suitable.U.S. Patent number [473948] and existing electric driving valve all are to adopt the mode of air cylinder driven conventional engines poppet valve and all be used for internal-combustion engine.
Summary of the invention
The objective of the invention is to overcome deficiency of the prior art, a kind of novel air motor fully variable valve actuator for air is provided.This mechanism comprises valve body, spool and is positioned at the valve body end cap at valve body two ends, and described spool has two ends and the connection part between two ends, and two ends of spool are divided into three chambers with valve inner; Between two ends of spool and the valve body end cap limit spring is set respectively, a two-bit triplet solenoid valve that is communicated to atmosphere, control gaseous and valve chamber respectively is installed on the valve body end cap; Have suction port and air outlet in the valve body both sides.
As a kind of improvement, be provided with seal ring in the side of spool end.
As a kind of improvement, two ends of spool are divided into three chambers with valve inner, and valve interior wall has an annular boss in a chamber location; It is hypotenuse that boss has a side at least, and the side of the spool end relative with hypotenuse also has corresponding hypotenuse, and both are combined into cone seal.
As a kind of improvement, one of described two two-bit triplet solenoid valve are often to open, and one is normally closed, link to each other with control gaseous at "on" position normally open valve not, and normally close valve communicates with atmosphere.
As a kind of improvement, the profile of described valve body is a rectangular structure.
As a kind of improvement, described suction port or air outlet are long and narrow waist shaped hole structure.
Described electric driving valve mechanism adopts the slide-valve structure of compact structure and two two-bit triplet solenoid valves is directly installed on the valve body two ends, has shortened connecting pipeline, has improved the speed of response of valve; Based on the action of two solenoid directional control valves, the control air pressure of spool rear and front end realizes that height changes, thereby finishes the control of valve timing and valve lift; The intake and exhaust of control high voltage control gas of valve core movement and air motor are isolated, reduced the influence that valve core movement is subjected to engine breathing pressure.
Compared with prior art, the present invention has following advantage:
(1) realized the decoupling zero of air motor valve motion and speed of crankshaft, can realize that the time of air motor air inflow is regulated, reduced the restriction loss of air inlet according to the port timing of the regulating working conditions optimum of air motor;
(2) Pneumatic automobile that uses this technology just can realize that the mode of operation of gas compressor is carried out the vehicle braked energy recovery, and severity of braking can be regulated very easily in callback course as long as rationally control the open phase of valve;
(3) the present invention adopts valve body to adopt the cuboid profile, adopts long and narrow intake and exhaust form, and having overcome engine valve needs big flow air inlet and the high contradiction that opens and closes between the frequency, and rectangular structure is convenient to valve and is installed on motor simultaneously;
(4) main valve body structure of the present invention adopts sliding valve style, and two two-bit triplet solenoid valves are directly installed on two ends of valve body, has accelerated speed of response that main valve plug opens and closes and simple and compact for structure.
Description of drawings
Fig. 1 is the structural representation of electric fully variable valve actuator for air in the embodiment of the invention.
Fig. 2 be among Fig. 1 A-A to sectional drawing.
Fig. 3 is the profile schematic representation of suction port.
Wherein: screw 1, valve body end cap 2, valve body 3, seal ring 4, suction port 5, gasket seal 6, limit spring 7, normally closed solenoid valve 8, right chamber 9, spool 10, middle chamber 11, air outlet 12, left chamber 13, normally open solenoid valve 14.
Embodiment
Describe the present invention below in conjunction with accompanying drawing.
Electric driving fully variable valve actuator for air-powered engine has the suction port 5 and the air outlet 12 of long and narrow waist shaped hole structure as shown in Figure 1 in the present embodiment in valve body 3 both sides of cuboid profile; Spool 10 be installed in valve body 3 inner chambers and can about move back and forth, have two columned ends and the connection part between two ends, two ends of spool 10 are divided into three chambers with valve body 3 inside, left chamber 13, intermediate cavity 11 and right chamber 9; Some roads seal ring 4 is installed on two ends of spool 10, finishes the sealing between left chamber 13 and intermediate cavity 11 and right chamber 9 and the intermediate cavity 11; The inwall of valve body 3 has an annular boss in intermediate cavity 11 positions; It is hypotenuse that boss has a side, and the side of the spool end relative with hypotenuse also has corresponding hypotenuse, and both are combined into cone seal.A limit spring 7 is housed respectively in left chamber 11 and right chamber 9; The two ends, the left and right sides of valve body 3 respectively are equipped with a valve body end cap 2, and left chamber 11 and right chamber 9 are isolated with working environment; Two-bit triplet normally open solenoid valve 14 and two-bit triplet normally closed solenoid valve 8 are directly connected to respectively on two valve body end caps 2.
As intake valve, the pressurized gas of air motor enter into intermediate cavity 10 from the suction port 5 of this electric driving fully variable valve actuator for air, are entered into the cylinder of motor again by air outlet 12; As exhaust valve, the gas in the cylinder is 12 discharges from the air outlet, discharge via intermediate cavity 10 and suction port 5.
Normally open solenoid valve 14 and normally closed solenoid valve 8 move simultaneously according to electrical signal, play guide's commutation effect, two kinds of actions based on the switching electricity of solenoid valve, left chamber 11 and right chamber 9 have two kinds of connected states: a kind of state is when two solenoid valves are not powered, left chamber 11 links to each other with high voltage control gas, and right chamber 9 is communicated with atmosphere simultaneously; Another kind of state is to work as to power simultaneously to normally open solenoid valve 14 and normally closed solenoid valve 8, and left chamber 11 communicates with atmosphere, and right chamber 9 communicates with high voltage control gas simultaneously.
Position shown in Figure 1 is the valve-closing position.At this moment, normally open solenoid valve 14 and normally closed solenoid valve 8 be not energising all, high voltage control gas enters left chamber 11 by normally open solenoid valve 14, right chamber 9 communicates with atmosphere, under the differential pressure action between left chamber 11 and the right chamber 9, the conical surface of spool 10 partly is close on the corresponding cooperation conical surface of valve body 3, valve-closing; Switch on simultaneously when giving normally open solenoid valve 14 and normally closed solenoid valve 8, high voltage control gas then enters right chamber 9 by normally closed solenoid valve 8, left chamber 11 communicates with atmosphere by normally open solenoid valve 14, under the differential pressure action of left and right sides chamber, spool 10 slides to left end, cylinder then is communicated with suction port 5 by air outlet 12, intermediate cavity 10, and valve is opened.By control normally open solenoid valve 14 and the normally closed solenoid valve 8 energising moment and electrical pulse length, just can control the intake and exhaust moment and the intake and exhaust endurance of motor, finish the function of full changeable air valve.
At last, it is also to be noted that what more than announce only is specific embodiments of the invention.All distortion that those of ordinary skill in the art can directly derive or associate from content disclosed by the invention all should be thought protection scope of the present invention.
Claims (6)
1, a kind of electric driving fully variable valve actuator for air-powered engine, comprise valve body, spool and be positioned at the valve body end cap at valve body two ends, it is characterized in that: described spool has two columned ends and the connection part between two ends, and two ends of spool are divided into three chambers with valve inner; Between two ends of spool and the valve body end cap limit spring is set respectively, a two-bit triplet solenoid valve that is communicated to atmosphere, control gaseous and valve chamber respectively is installed on the valve body end cap; Have suction port and air outlet in the valve body both sides.
2, electric driving fully variable valve actuator for air-powered engine according to claim 1 is characterized in that, is provided with seal ring in the side of spool end.
3, electric driving fully variable valve actuator for air-powered engine according to claim 1 is characterized in that, two ends of spool are divided into three chambers with valve inner, and valve interior wall has an annular boss in a chamber location; It is hypotenuse that boss has a side at least, and the side of the spool end relative with hypotenuse also has corresponding hypotenuse, and both are combined into cone seal.
4, electric driving fully variable valve actuator for air-powered engine according to claim 1, it is characterized in that one of described two two-bit triplet solenoid valve are often to open, one is normally closed, link to each other with control gaseous at "on" position normally open valve not, normally close valve communicates with atmosphere.
5, electric driving fully variable valve actuator for air-powered engine according to claim 1 is characterized in that, the profile of described valve body is a rectangular structure.
6, electric driving fully variable valve actuator for air-powered engine according to claim 1 is characterized in that, described suction port or air outlet are long and narrow waist shaped hole structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101219538A CN101397921B (en) | 2008-10-23 | 2008-10-23 | Electric driving fully variable valve actuator for air-powered engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101219538A CN101397921B (en) | 2008-10-23 | 2008-10-23 | Electric driving fully variable valve actuator for air-powered engine |
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| Publication Number | Publication Date |
|---|---|
| CN101397921A true CN101397921A (en) | 2009-04-01 |
| CN101397921B CN101397921B (en) | 2010-04-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008101219538A Expired - Fee Related CN101397921B (en) | 2008-10-23 | 2008-10-23 | Electric driving fully variable valve actuator for air-powered engine |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101936198A (en) * | 2010-08-06 | 2011-01-05 | 大连理工大学 | Cam oil-supply type electro-hydraulic valve driving system |
| CN104481627A (en) * | 2014-12-08 | 2015-04-01 | 广西玉柴机器股份有限公司 | Pneumatic valve |
| WO2022161190A1 (en) * | 2021-01-26 | 2022-08-04 | 中国矿业大学(北京) | Slide valve type hydraulic reversing valve having special sealing valve core structure |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2045783U (en) * | 1988-05-16 | 1989-10-11 | 郭景坤 | Cylinder-changing device for engine |
| CN1740525A (en) * | 2005-07-31 | 2006-03-01 | 秦强 | Electrically controlled gas valve executing mechanism |
| CN100363597C (en) * | 2006-01-19 | 2008-01-23 | 清华大学 | Method for realizing fast change-over of gasoline engine distributing phase and device thereof |
| CN1959088A (en) * | 2006-03-15 | 2007-05-09 | 秦强 | Multicylinder engine system with variable discharge capacity |
-
2008
- 2008-10-23 CN CN2008101219538A patent/CN101397921B/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101936198A (en) * | 2010-08-06 | 2011-01-05 | 大连理工大学 | Cam oil-supply type electro-hydraulic valve driving system |
| CN101936198B (en) * | 2010-08-06 | 2011-12-28 | 大连理工大学 | Cam oil-supply type electro-hydraulic valve driving system |
| CN104481627A (en) * | 2014-12-08 | 2015-04-01 | 广西玉柴机器股份有限公司 | Pneumatic valve |
| WO2022161190A1 (en) * | 2021-01-26 | 2022-08-04 | 中国矿业大学(北京) | Slide valve type hydraulic reversing valve having special sealing valve core structure |
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| CN101397921B (en) | 2010-04-07 |
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Granted publication date: 20100407 Termination date: 20111023 |