CN107642418A - Choke valve and engine - Google Patents
Choke valve and engine Download PDFInfo
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- CN107642418A CN107642418A CN201711046230.1A CN201711046230A CN107642418A CN 107642418 A CN107642418 A CN 107642418A CN 201711046230 A CN201711046230 A CN 201711046230A CN 107642418 A CN107642418 A CN 107642418A
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- valve
- throttling
- choke
- valve plate
- throttle
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Abstract
The invention provides a kind of choke valve, including throttling valve chest and the valve plate being set up in throttling valve chest, throttling valve chest includes valve body import, valve outlet, and the choke zone being arranged between valve body import and valve outlet, valve plate frame are located at choke zone；Throttle the throttling initial point that the inwall setting of valve chest coordinates with valve plate closure, and the throttling terminal when valve plate is opened completely, and choke valve inner walls also set up the throttling curved surface to throttling terminal by throttling initial point arc transition.The inwall for the valve chest that throttles is set into the throttling curved surface by throttling initial point arc transition to the terminal that throttles, with the rotation of valve plate, so that the end of valve plate and the spacing even transition of throttling curved surface, aperture control is more accurate, choke valve throttling is unstable caused by avoiding the mutation of valve plate orifice size, the control accuracy that throttles is more accurate, improves the precision of throttle valve control.Present invention also offers a kind of engine for being provided with above-mentioned throttle-valve structure.
Description
Technical field
The present invention relates to throttle valve technology field, more specifically to a kind of choke valve and engine.
Background technology
A variety of valve bodies such as intake-air throttle valve, combustion gas Trim valves and EGR valve are generally set in engine.Intake-air throttle valve is used in
On engine air inlet tube, for controlling air or fuel-air mixture to enter engine.(Trim typically represents valve to combustion gas Trim valves
Door internals) with engine fuel supply system, for controlling fuel to enter air inlet pipe or engine.EGR valve, which is used in, starts
Between machine gas extraction system and gas handling system, for controlling waste gas in blast pipe to enter air inlet pipe.
Existing intake-air throttle valve, combustion gas Trim valve housings are tubulose, and its internal valve plate shape is generally circular.Opened in valve plate
When degree is smaller, the change of valve plate aperture is small, and the change of the circulation area of valve body is greatly.When valve plate aperture is larger, the change of valve plate aperture
The influence to circulation area diminishes on the contrary.And circulation area can influence the air inflow of engine, fuel delivery, show on the engine
Engine control is insensitive when unstable idle speed, higher load, and (overspeed parking easily occurs for load removal of dashing forward, shock loads engine is suppressed
Wait indefinitely problem), the problems such as horizontal bar cyclical variations (IMEP_COV, combustion stability) are larger.
Traditional air throttle is limited to its structure, and control accuracy is inadequate when small guide vane be present, controls during big aperture insensitive
Feature.On the engine to show as during idling engine speed unstable, engine is turned round fast severe or hair during shock load
Motivation suppresses phenomenon of waiting indefinitely, and also brings inconvenience and difficulty to engine calibration.
Therefore, the control accuracy of throttling arrangement aperture how is improved, being that current those skilled in the art are urgently to be resolved hurrily asks
Topic.
The content of the invention
In view of this, the invention provides a kind of choke valve, to improve the control accuracy of throttling arrangement aperture；The present invention is also
Provide a kind of engine.
In order to achieve the above object, the present invention provides following technical scheme：
A kind of choke valve, including throttling valve chest and the valve plate being set up in the throttling valve chest, the throttling valve casing
Body includes valve body import, valve outlet, and the choke zone being arranged between the valve body import and valve outlet, the valve plate frame
Located at the choke zone；
The inwall of the throttling valve chest sets the throttling initial point coordinated with valve plate closure, and complete in the valve plate
Throttling terminal during opening, the choke valve inner walls are also set up by the throttling initial point arc transition to the throttling terminal
Throttling curved surface.
Preferably, in above-mentioned choke valve, the valve plate includes being arranged vertically, and respectively positioned at the of the throttling initial point
One throttle position, and the second throttle position positioned at the throttling terminal.
Preferably, in above-mentioned choke valve, the valve plate is when throttling rotation, the section with first throttle position formation
Flow opening angle θ；The end of the valve plate and the throttling spacing d of the throttling curved surface, with the linear direct ratios of throttle opening angle θ
Example relation.
Preferably, in above-mentioned choke valve, the choke zone includes the closure radius R of valve plate closure, and the valve
Plate is opened into throttling radius r during throttle position, the differences of the spacing d for the closure radius R and the throttling radius r that throttle
The proportionality coefficient at value, the throttling spacing and the throttle opening angle is R/ (150~200).
Preferably, in above-mentioned choke valve, the proportionality coefficient at the throttling spacing and the throttle opening angle is R/180.
Preferably, in above-mentioned choke valve, the valve plate surrounds throttling when throttling rotation between the throttling curved surface
Circulation Area, the circulation area S and the linear proportional relationship in throttle opening angle of the throttling Circulation Area.
Preferably, in above-mentioned choke valve, it is additionally provided with the throttling valve chest to the valve body import and the valve
The differential pressure pickup that the flow difference of body outlet is monitored.
Preferably, in above-mentioned choke valve, the flow pressure to the valve body import is set respectively on the throttling valve chest
The first pressure sensor that power is monitored, and the second pressure being monitored to the flow pressure of the valve outlet sense
Device.
A kind of engine, is provided with the air throttle that air inflow is adjusted, and the air throttle is as above any one
Choke valve described in.
Choke valve provided by the invention, including throttling valve chest and the valve plate being set up in throttling valve chest, throttle valve casing
Body includes valve body import, valve outlet, and the choke zone being arranged between valve body import and valve outlet, and valve plate frame is located at throttling
Area；Throttle the throttling initial point that the inwall setting of valve chest coordinates with valve plate closure, and the throttling terminal when valve plate is opened completely,
Choke valve inner walls also set up the throttling curved surface to the terminal that throttles by throttling initial point arc transition.Valve plate is positioned at throttling valve chest
Interior, fluid is flowed into by valve body import, is flowed out by valve outlet, is flowed by flip angle of the valve plate in throttling valve chest
Amount control, valve plate overturns region between the valve chest that throttles, for the choke zone that flow is adjusted.Throttling valve chest is throttling
Initial point, its inwall and valve plate closure coordinate, and are opened completely in throttling terminal valve plate, and valve plate with throttling valve chest by being located at throttling
Inwall spacing change between initial point and throttling terminal, adjusts flow.The inwall for the valve chest that throttles is set and justified by throttling initial point
Arc transits to the throttling curved surface of throttling terminal, with the rotation of valve plate so that the end of valve plate and the uniform mistake of spacing of throttling curved surface
Cross, aperture control is more accurate, and choke valve throttling is unstable caused by avoiding the mutation of valve plate orifice size, and throttling control accuracy is more
Add the control accuracy for precisely, improving choke valve.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the required accompanying drawing used in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is to regard structure sectional view on choke valve provided by the invention；
Fig. 2 is the front view structure sectional view of choke valve provided by the invention；
The right side that Fig. 3 is Fig. 2 regards structure sectional view.
Embodiment
The invention discloses a kind of choke valve, the control accuracy of throttling arrangement aperture is improved；Present invention also offers one
Kind engine.
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Whole description, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.It is based on
Embodiments of the invention, the every other reality that those of ordinary skill in the art are obtained under the premise of creative work is not made
Example is applied, belongs to the scope of protection of the invention.
As shown in figure 1, Fig. 1 is to regard structure sectional view on choke valve provided by the invention；Fig. 2 is throttling provided by the invention
The front view structure sectional view of valve；The right side that Fig. 3 is Fig. 2 regards structure sectional view.
The invention provides a kind of choke valve, including throttling valve chest 1 and the valve plate 2 being set up in throttling valve chest 1, section
Flowing valve chest 1 includes valve body import 11, valve outlet 12, and the throttling being arranged between valve body import 11 and valve outlet 12
Area, valve plate 2 are set up in choke zone；Throttle the throttling initial point 14 that the inwall setting of valve chest 1 coordinates with the closure of valve plate 2, and in valve
Throttling terminal 15 when plate 2 is opened completely, the throttling inwall of valve chest 1 are also set up by the arc transition of throttling initial point 14 to the terminal that throttles
15 throttling curved surface 13.In throttling valve chest 1, fluid is flowed into valve plate 2 by valve body import 11, is flowed by valve outlet 12
Go out, flow control is carried out by flip angle of the valve plate 2 in throttling valve chest 1, valve plate 2 is overturn between the valve chest 1 that throttles
Region, for the choke zone that flow is adjusted.The valve chest 1 that throttles coordinates in throttling initial point 14, its inwall with the closure of valve plate 2,
Throttling the valve plate 2 of terminal 15 open completely, valve plate 2 by with throttling valve chest 1 positioned at throttling initial point 14 and throttle terminal 15 it
Between inwall spacing change, adjust flow.The inwall for the valve chest 1 that throttles is set by the arc transition of throttling initial point 14 to the end that throttles
The throttling curved surface 13 of point 15, with the rotation of valve plate 2 so that the end of valve plate 2 and the spacing even transition of throttling curved surface 13, aperture
Control is more accurate, and choke valve throttling is unstable caused by avoiding the mutation of the orifice size of valve plate 2, and throttling control accuracy is more smart
Standard, improve the precision of throttle valve control.
In the specific embodiment of this case one, valve plate 2 includes being arranged vertically, and respectively positioned at the first throttle of throttling initial point 14
Position, and the second throttle position positioned at throttling terminal 15.Because the throttling inwall of valve chest 1 is arc transition structure, and with valve
The rotation of plate 2, the end of valve plate 2 gradually change with the throttling inwall spacing of valve chest 1 so that the valve body import 11 of choke valve and throttling
Outlet 12 be located at different horizontal lines, to meet the installation requirement of choke valve, avoids valve plate 2 from rotating to after choke valve installation, with
Valve body import 11 and valve outlet 12 produce interference, it is necessary to be controlled to the rotational angle of valve plate 2.Valve plate 2 is in throttling initial point
14 by Close All inside choke valve, in throttling terminal 15 to the complete opening of choke valve, when being in throttling initial point 14 with valve plate 2,
The position for closing choke valve is first throttle position, and when being in throttling terminal 15 with valve plate 2, the position for fully opening choke valve is
Second throttle position, valve plate 2 is set to be mutually perpendicular in first throttle position and the second throttle position, i.e. valve plate 2 is in throttling work
When, its throttle rotate angle be 0 °~90 °, according to valve plate 2 rotational angle to throttle the inwall of valve chest 1 choke zone scope
It is configured, avoids the choke valve volume after structure change from changing greatly, keep the popularity of its scope of application.
In the specific embodiment of this case one, valve plate 2 is when throttling rotation, the throttle opening angle with the formation of first throttle position
θ；The end of valve plate 2 and the throttling spacing d of throttling curved surface 13, with the linear proportional relationships of throttle opening angle θ.Valve plate 2 is by
One throttle position starts to rotate, the rotation initial point using the position as valve plate 2, with the rotation of valve plate 2, valve plate 2 and first throttle position
Form a throttle opening angle θ between putting, the circulation area S of fluid changes with throttle opening angle θ change in choke valve.Valve plate
It is the circulating area of fluid between 2 end and throttling curved surface 13, part circulation area S size, determines fluid flow
Size.The spacing between circulation area S and the end of valve plate 2 and throttling curved surface 13 between valve body 2 and throttling curved surface 13 is related,
Ultimate range between valve plate 2 and throttling curved surface 13 is set as the spacing d that throttles, with becoming larger for throttle opening angle θ, throttling
Spacing d progressively becomes big, and throttling spacing d and throttle opening angle θ is designed with linear proportional relationship, then by opening throttling
Angle θ control is spent, the throttling spacing d that can accurately control valve plate between the curved surface that throttles, i.e., the flow of choke valve can be obtained
Accurate variable quantity, adapt to the control of engine air throttle, can accurately control air inflow, improve engine operating efficiency and
Energy saving.
Certainly, throttling curved surface 13 can be set from valve plate throttle opening angle θ corresponding relation according to different corresponding relations
It is fixed, meet the need of work of different operating modes, due to the structure design for the curved surface that throttles, throttle opening angle θ and throttling spacing d can be passed through
Corresponding relation, reach the purpose for being precisely controlled throttle-flow, improve the control accuracy of choke valve.
In the specific embodiment of this case one, choke zone includes the closure radius R that valve plate 2 closes, and valve plate 2 is opened into throttling
Throttling radius r during position, throttling spacing d are closure radius R and the difference for the radius r that throttles, and throttle spacing d and throttle opening angle
θ proportionality coefficient is R/ (150~200).
Meanwhile valve plate surrounds throttling Circulation Area, the circulating face for the Circulation Area that throttles when throttling rotation between throttling curved surface
Product S and the linear proportional relationship in throttle opening angle.
Therefore, because the throttle opening angle θ of valve plate and throttling spacing d linear ratio relation, therefore to the stream of choke valve
Logical area S can be calculated by direct proportion to be precisely controlled.
Specifically, setting closure radius R, throttle radius r, set throttle opening angle θ and throttling spacing d proportionality coefficient as
K, then the track polar coordinate system equation for the curved surface that throttles are：
R=R+k θ, wherein θ are 0 °~90 °；
So as to obtain, throttling spacing d and throttle opening angle θ relation are；
D=r-R=k θ；
Pass through spacing and the relation at throttle opening angle, when the throttle opening angle that can obtain valve plate is θ, correspondence position section of throttling
The circulation area S of valve is flowed, when setting valve plate is opened, the Zhou Changwei L of the corresponding curved surface that throttles, then：
L=2 (π * R+2*d)；
S=2 (π R*d)；
It is derived as：
S=2 (π R*k θ)；
When throttle opening angle θ=90 °, can obtain：
S=π R2；
It is derived as：
2 (π R*k*90)=π R2；
And then obtain：
K=R/180.
Derived more than, R is constant, and k is the constant related to R, then, circulation area S is in throttle opening angle θ
Linear direct proportion is related.
As k=R/180, maximum flow area can be obtained, certainly, this case is not limited to k by the choke valve volume of minimum
=R/180, setting ratio coefficient k are R/ (150~200), and k is the constant related to the maximum opening at throttle opening angle, is passed through
The maximum opening angle of valve plate is controlled, obtains the valve body of different flow control range so that valve body has different opening model
System is contained, so as to according to different use environments, obtain the control effect different to choke valve.
Preferably, throttling spacing d and throttle opening angle θ proportionality coefficient is R/180.
This case throttle-valve structure is applied to engine art, for solar term gate action, is arranged in engine charge pipeline
On, lacking for engine unstable idle speed, high load capacity shock load or prominent control of engine speed ability when unloading load can be improved
Point, also reduce the demarcation complexity of system.
Supply and control for fuel, can make it that engine fuel control is more accurate, to engine calibration, fuel phase
Ying Xing, air-fuel ratio control the effect that is all greatly improved.
Acted on for EGR valve, can equally improve the control accuracy of EGR rules, reduce demarcation difficulty.
In the specific embodiment of this case one, it is additionally provided with the valve chest 1 that throttles to valve body import 11 and valve outlet 12
The differential pressure pickup 3 that flow difference is monitored.In automotive field, throttle valve applications, its aperture is controlled by automobile ECU,
For the accurate circulation area for obtaining choke valve, by setting differential pressure pickup, valve body import and valve outlet are accurately obtained
Difference in flow, the flow monitoring to choke valve is realized in real time.
In the specific embodiment of this case one, set respectively on the valve chest 1 that throttles and the flow pressure of valve body import is supervised
The first pressure sensor of survey, and the second pressure sensor being monitored to the flow pressure of valve outlet 12.Fluid flows through
The flow pressure of choke valve, can be by being respectively arranged at the first pressure sensor and second pressure of valve body import and valve outlet
Sensor, obtain pressure.
Differential pressure pickup 3 is fixedly mounted with by bolt, sets throttling upstream pressure to take mouth 5 and choke valve on throttling valve chest 1
Pressure takes mouth 6 afterwards, to carry out accurate measurements to the pressure of choke valve import and export.
By the detection to throttle flow rate, by pressure, differential pressure pickup and, the circulating face of controllable choke valve
Product, the fluid flow of choke valve circulation according to Bernoulli equation, can be precisely obtained, obtain flow feedback, further realized to section
The accuracy of valve control is flowed, choke valve is solved and controls low precision in small guide vane, control accuracy insensitive shortcoming during open degree.
Based on the choke valve provided in above-described embodiment, present invention also offers a kind of engine, it is provided with to entering
The air throttle that tolerance is adjusted, the air throttle that the engine is provided with use the throttle-valve structure provided in above-described embodiment.
Because the engine employs the choke valve of above-described embodiment, so the beneficial effect that the engine is brought by choke valve
Fruit refer to above-described embodiment.
The foregoing description of the disclosed embodiments, professional and technical personnel in the field are enable to realize or using the present invention.
A variety of modifications to these embodiments will be apparent for those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, it is of the invention
The embodiments shown herein is not intended to be limited to, and is to fit to and principles disclosed herein and features of novelty phase one
The most wide scope caused.
Claims (9)
1. a kind of choke valve, it is characterised in that described including throttling valve chest and the valve plate being set up in the throttling valve chest
The valve chest that throttles includes valve body import, valve outlet, and the choke zone being arranged between the valve body import and valve outlet, institute
State valve plate frame and be located at the choke zone；
The inwall of the throttling valve chest sets the throttling initial point coordinated with valve plate closure, and is opened completely in the valve plate
When throttling terminal, the choke valve inner walls also set up by it is described throttling initial point arc transition to it is described throttling terminal section
Flow curved surface.
2. choke valve according to claim 1, it is characterised in that the valve plate includes being arranged vertically, and is located at institute respectively
State the first throttle position of throttling initial point, and the second throttle position positioned at the throttling terminal.
3. choke valve according to claim 2, it is characterised in that the valve plate is when throttling rotation, with the first segment
Flow the throttle opening angle θ that position is formed；The end of the valve plate and the throttling spacing d of the throttling curved surface, are opened with the throttling
Spend the linear proportional relationships of angle θ.
4. choke valve according to claim 3, it is characterised in that the choke zone includes the closure half of valve plate closure
Footpath R, and throttling radius r, the throttling spacing d when valve plate is opened into throttle position is the closure radius R and described
The proportionality coefficient at throttling radius r difference, the throttling spacing and the throttle opening angle is R/ (150~200).
5. choke valve according to claim 4, it is characterised in that the throttling spacing and the ratio at the throttle opening angle
Coefficient is R/180.
6. choke valve according to claim 3, it is characterised in that the valve plate is bent with the throttling when throttling rotation
Throttling Circulation Area is surrounded between face, circulation area S and the linear direct proportion in the throttle opening angle of the throttling Circulation Area close
System.
7. choke valve according to claim 1, it is characterised in that be additionally provided with the throttling valve chest to the valve body
The differential pressure pickup that the flow difference of import and the valve outlet is monitored.
8. choke valve according to claim 7, it is characterised in that set respectively to the valve body on the throttling valve chest
The first pressure sensor that the flow pressure of import is monitored, and be monitored to the flow pressure of the valve outlet
Two pressure sensors.
9. a kind of engine, it is provided with the air throttle that air inflow is adjusted, it is characterised in that the air throttle is such as
Choke valve in claim 1-8 described in any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711046230.1A CN107642418B (en) | 2017-10-31 | 2017-10-31 | Throttle valve and engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711046230.1A CN107642418B (en) | 2017-10-31 | 2017-10-31 | Throttle valve and engine |
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| Publication Number | Publication Date |
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| CN107642418A true CN107642418A (en) | 2018-01-30 |
| CN107642418B CN107642418B (en) | 2019-12-10 |
Family
ID=61125043
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711046230.1A Active CN107642418B (en) | 2017-10-31 | 2017-10-31 | Throttle valve and engine |
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| Country | Link |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109268150A (en) * | 2018-09-18 | 2019-01-25 | 潍柴动力股份有限公司 | A kind of engine intake and exhaust system and its control valve |
| WO2019084763A1 (en) * | 2017-10-31 | 2019-05-09 | 潍柴动力股份有限公司 | Throttle valve and engine |
| CN110230542A (en) * | 2018-03-05 | 2019-09-13 | 大陆汽车系统公司 | Integrated VDA shell with anti-rotational feature portion |
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| WO2019084763A1 (en) * | 2017-10-31 | 2019-05-09 | 潍柴动力股份有限公司 | Throttle valve and engine |
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| CN109268150B (en) * | 2018-09-18 | 2021-08-20 | 潍柴动力股份有限公司 | Engine air intake and exhaust system and control valve thereof |
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| Publication number | Publication date |
|---|---|
| CN107642418B (en) | 2019-12-10 |
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