CN108167062A - A kind of turbulence form controllable method for fast press - Google Patents
A kind of turbulence form controllable method for fast press Download PDFInfo
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- CN108167062A CN108167062A CN201810003089.5A CN201810003089A CN108167062A CN 108167062 A CN108167062 A CN 108167062A CN 201810003089 A CN201810003089 A CN 201810003089A CN 108167062 A CN108167062 A CN 108167062A
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- angle
- deflector
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- control unit
- turbulence
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B31/00—Modifying induction systems for imparting a rotation to the charge in the cylinder
- F02B31/04—Modifying induction systems for imparting a rotation to the charge in the cylinder by means within the induction channel, e.g. deflectors
- F02B31/06—Movable means, e.g. butterfly valves
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
Abstract
The present invention relates to a kind of turbulence form controllable methods for fast press, used device includes being in turn secured to lateral tumble flow form control unit and longitudinal turbulence form control unit at fast press air intake duct, solenoid electric valve and control module, and lateral tumble flow form control unit and longitudinal turbulence form control unit respectively include a rotation angle and control encoder, a Combined guide flowing plate and a gear drive group；Combined guide flowing plate includes three deflectors being placed in parallel, and the rotation of encoder control gear wheel is controlled by rotation angle, then make three pinion gear direction of rotation identical by the deflecting effect of two middle gears, makes the direction of rotation of three deflectors identical with angle.The adjusting method of turbulence form is：The calibration experiment carried out by deflector angle box-like to different transverse sets and the corresponding Tumble and swirl of longitudinal combination type deflector angle and swirl ratio determines to realize the required rotation angle control encoder angular of turbulent flow in the cylinder of various object forms.
Description
Technical field
The present invention relates to a kind of turbulence form controllable methods for fast press, and in particular to study fuel characteristic and
The experimental method of new combustion mode characteristic.
Background technology
The increase of car ownership while making tremendous contribution for Chinese society development, also consumes a large amount of oil
Resource gives off a large amount of pernicious gases, so as to generate larger harm to the living environment of people.Vast researcher is for upper
The problem of stating proposes the solution routes such as Development of Novel substitute Fuel of Internal Combustion Engine and new combustion mode, and invents and have studied constant volume combustion
Burn the infrastests devices such as bullet, fast press.However, Modern Internal-Combustion Engine combustion process and its optimizing research are faced with many basic sections
Knowledge is inscribed and technical bottleneck, such as combustion knock abnormal combustion phenomenon.Therefore, as can be the novel substitute fuel of internal combustion engine
And new combustion mode provides the fast press experimental provision of theoretical research and experimental vehicle, there is its necessity studied.
IC engine cylinder flow field structure and turbulence characteristic are one of most important factors for influencing combustion process of the internal-combustion engine, inside
Combustion engine is entirely in cycle, and fluid carries out the turbulent motion of extremely complex and strong transition always in cylinder.In IC engine cylinder
Turbulent flow is mainly included around the vortex in cylinder-bore axis direction, around the tumble flow perpendicular to cylinder-bore axis direction and squish flow etc..IC engine cylinder
Interior turbulent motion is in cylinder in physical and chemical process, the concentration of combustion mixture, flame propagation velocity and combustion quality, cylinder
Heat transfer and the formation of pollutant all have the influence of directly essence.Therefore, it is burnt under different turbulence forms based on fast press
The research of characteristic has very important meaning to the exploitation and research of I. C engine combustion system.
Fast press major function is compression and the ignition process simulated inside internal-combustion piston engine, be it is a kind of preferably between
Study of Support between theory analysis and practical application.Therefore, fast press has in research cylinder the problems such as turbulent combustion such as pinking
Significance.It is found through consulting literatures data, has no related and be directed to fast press experimental stand not under different turbulence forms
The document report studied of combustion characteristics.
Invention content
The object of the present invention is to provide a kind of turbulence form controllable method, for being based on fast press to turbulent flow shapes different in cylinder
Combustion characteristics under formula is developed and is studied.Technical solution is as follows：
A kind of turbulence form controllable method for fast press, used device include being in turn secured to fast press air inlet
Lateral tumble flow form control unit and longitudinal turbulence form control unit, solenoid electric valve and control module at road, wherein, it is horizontal
Identical with longitudinal turbulence form control cellular construction to tumble flow form control unit, installation site is different, the former is fastened transversely to
At the air intake duct, at the longitudinally fixed air intake duct of the latter, respectively including rotation angle control encoder, a group
Box-like deflector and a gear drive group；Combined guide flowing plate includes three deflectors being placed in parallel, the transmission gear
Group, which includes a gear wheel, two middle gears and three pinion gears, the transmission between each pinion gear and corresponding deflector, is
It is realized by a transmission shaft with key；Control module is rapid in the cylinder of object form by the way that the angle of deflector is controlled to realize
Stream.Control mode is：The rotation of encoder control gear wheel is controlled by rotation angle, then is made by the deflecting of two middle gears
With making, three pinion gear direction of rotation are identical, make the direction of rotation of three deflectors identical with angle, realize the tune of turbulence form
Section method is：
(1) by deflector angle box-like to different transverse sets and the corresponding Tumble and swirl of longitudinal combination type deflector angle and
The calibration experiment that swirl ratio carries out determines to realize the required rotation angle of turbulent flow in the cylinder of various object forms
Degree control encoder angular；
(2) after primary experiment, the residual gas in combustion chamber is emptied, and sheds the air pressure and braking at driving piston rear
Oil pressure in cylinder；Control module is according to the swirl ratio and Tumble and swirl of required object form, and selection is properly
Rotation angle control encoder angular, then led by the gearing of driving gear set and transmission shaft drive
Flowing plate rotates respective angles, adjusts turbulence form.
Compared with prior art, the beneficial effects of the invention are as follows：
(1) turbulent motion in IC engine cylinder is introduced in the case of being basically unchanged present invention can be implemented in swept volume, in cylinder
The formation of turbulent motion can make the experimental situation of fast press experiment porch more tend to actual conditions, and the accuracy of experimental data obtains
To raising.
(2) present invention can generate various forms of turbulent motions in fast press combustion chamber, as tumble flow is dominated in gasoline engine
Turbulent motion or diesel engine in be vortexed leading turbulent motion, with based on fast press to the combustion characteristics under different turbulence forms
It is tested and is studied.By change the angle of Combined guide flowing plate, it can be achieved that in cylinder turbulence form adjusting.
Description of the drawings
Fig. 1 is turbulence form control device schematic diagram in the present invention
Fig. 2 (a) is the vertical view of turbulence form control device in Fig. 1
Fig. 2 (b) is the left view of turbulence form control device in Fig. 1
Fig. 2 (c) is the front view of turbulence form control device in Fig. 1
Fig. 3 is the connection diagram of turbulence form control device and solenoid electric valve in the present invention
Fig. 4 (a) is lateral tumble flow form control cell schematics in the present invention
Fig. 4 (b) is longitudinal turbulence form control cell schematics in the present invention
Fig. 5 is driving gear set schematic diagram in the present invention
In figure：
1- air intake duct 2- transmission shaft 3- pinion gears
4- middle gear 5- gear wheel 6- rotation angles control encoder
7- rectangular box 8- deflector 9- fixing nuts
10- solenoid electric valve 11- connecting plate 12- gasket seals
13- transverse direction tumble flow form control unit 14- longitudinal turbulence form control unit 15- driving gear sets
Specific embodiment
Technical solution of the present invention is described in further detail with reference to the accompanying drawings and detailed description, but the present invention is simultaneously
Not limited to this specific embodiment, this description are not intended to limit the invention.
As shown in Figs. 1-2, the turbulence form controllable device for fast press that the present invention uses, including Combined guide flowing plate
8th, driving gear set 14, solenoid electric valve 10, rotation angle control encoder 6 and control module.Fig. 1 is turbulent flow shape in the present invention
Formula control device schematic diagram, Fig. 2 (a), Fig. 2 (b) and Fig. 2 (c) be respectively the present invention in turbulence form control device vertical view,
Left view and front view.The turbulence form control device is divided into lateral tumble flow form control unit 13 and longitudinal turbulence form control
Unit 14 processed, is sequentially arranged at air intake duct.The transverse direction tumble flow form control unit 13 and longitudinal turbulence form control unit
14, which respectively include a rotation angle, controls 6, Combined guide flowing plates 8 of encoder and a gear drive group 15.The control
Module includes PLC control unit, host computer and PIV test systems.Wherein, host computer is connected with PLC control unit, PLC controls
Unit is connected with PIV tests system.The air intake duct 1 is designed as rectangular air intake duct 1, to ensure the angle of the rotation of deflector 8 not
It is limited by 1 wall surface of air intake duct.The driving gear set 15 is placed on 1 outer wall of exchange premium air flue installation in a rectangular box 7 and fixes,
In the fixation of each gear completed by the cooperation of 7 wall surface of rectangular box and bolt.
Fig. 3 is the connection diagram of turbulence form control device and solenoid electric valve 10 in the present invention.The Electromagnetic Control
Valve 10 and the connection of air intake duct 1 are completed by several through-holes on connecting plate 11, and the arrangement of the through-hole meets：Through-hole is around pipe
Lu Zhizheng is uniformly distributed.The number of openings is four.The connection of the solenoid electric valve 10 and air intake duct 1 adds gasket
Piece 12.The solenoid electric valve 10 be bi-bit bi-pass closed type gas high pressure solenoid valve, material selection stainless steel material.It is described
Combined guide flowing plate 8, driving gear set 15, transmission shaft 2 and other installation locating elements select stainless steel material.
Fig. 4 (a) and Fig. 4 (b) is lateral tumble flow control unit 13 and longitudinal turbulence form control unit in the present invention respectively
14 schematic diagrames.One Combined guide flowing plate 8 includes the deflector 8 of three same directions.The Combined guide flowing plate 8 designs
For 3 variable-angles and the identical deflector 8 of angle change is to the turbulence form in master cylinder, and combustion mixture passes through water conservancy diversion
Plate 8 changes flow direction and forms vortex in cylinder under the guide functions of cylinder wall circumference, and in the influence of piston-top surface
Under tumble flow is formed in cylinder.The wherein box-like deflector 8 of transverse set is controlling the form of tumble flow, longitudinal combination type deflector 8
To control the form of vortex.
Fig. 5 is 15 schematic diagram of driving gear set in the present invention.One driving gear set 15 include a gear wheel 5,
Two middle gears 4 and three pinion gears 3 form.The angle of the Combined guide flowing plate 8 can accurately be controlled by control module, different
8 angle of deflector of angle can generate different turbulence forms.The tooth of each gear is identical in the driving gear set 15 is nibbled with reaching
Requirement is closed, lubricating oil is coated between gear and gear to ensure smoothly to be driven.The precision of 8 direction of rotation of deflector is by small
The number of teeth z controls of gear 3, can reach rotation angle accuracy for 360 °/z.The width of the deflector 8 is slightly less than both sides water conservancy diversion
Plate 8 arrives 1 distance of air intake duct, to ensure that 8 angle of deflector can arbitrarily rotate between 0-180 °.
The rotation angle control encoder 6 directly controls the rotation of gear wheel 5, then the deflecting by two middle gears 4
Effect makes three 3 direction of rotation of pinion gear identical, makes three 8 direction of rotation of deflector identical with angle.The pinion gear 3 is with leading
Transmission between flowing plate 8 is realized by a transmission shaft 2 with key.
The present invention operation principle be：Mainly using turbulence form control device and control module, 8 angle of deflector is controlled
To control turbulence form；Control module controls the rotation angle of rotation angle control encoder 6, passes through driving gear set 15
Deflecting and gearing drive deflector 8 to rotate, and ensure that 8 rotation angle of deflector is identical, to reach scheduled target turbulence
Form.Its application process is：When gaseous mixture in premixing tank after mixing, solenoid electric valve 10 is opened, under differential pressure action mix
It closes gas quickly to inject, realizes turbulent flow in the cylinder of object form by controlling the angle of deflector 8, controlled after the completion of air inlet by PLC
System closes solenoid electric valve 8 and carries out compression and combustion process immediately.
The fast press experiment porch applied using the present invention, after primary experiment, if you need to adjust turbulent flow shape in cylinder
Formula can obtain optimum efficiency using following methods：
Realize that the adjusting process of turbulence form is using the present invention for the fast press experiment porch in laboratory, primary real
After testing, the residual gas in combustion chamber is emptied, and sheds the oil pressure in the air pressure and checking cylinder at driving piston rear.It is controlled in PLC
Target swirl ratio and Tumble and swirl are inputted in system processed, PLC is by having demarcated the experimental data of completion respectively in longitudinal turbulence form
Suitable rotation angle control 6 angle of encoder is selected, then pass through in control unit 14 and lateral tumble flow form control unit 13
The gearing of driving gear set 15 and transmission shaft 2 drives deflector 8 to rotate respective angles, reaches the mesh for adjusting turbulence form
's.
The initial stage test calibration method of the present invention includes the following steps：
Step 1, start fast press experimental system in host computer and test system with PIV, pre-debug is carried out before official testing；
Step 2, pre-debug is completed, into the official testing stage；Transverse combination is inputted respectively in fast press experimental system
8 angle of 8 angle of formula deflector and longitudinal combination type deflector tests system by host computer and PLC control unit determines rotation angle
The rotation angle of degree control encoder 6.Vortex in fast press cylinder when Tumble and swirl is measured by PIV tests system；
Step 3, the turbulence form of different rotary angle is demarcated, detailed process is：In the box-like water conservancy diversion of transverse set
In the case of plate angle degree is constant, longitudinal combination type deflector is made ° to be successively increased from 0 ° to 180 and measures its Tumble and swirl and swirl ratio；From
0 ° to the 180 ° change box-like deflector angle of transverse set, repeats above step；
Step 4, test is completed, and records test data and chart.
It then can box-like deflector angle and longitudinal combination type deflector angle be corresponding to different transverse sets after the completion of test
Tumble and swirl and swirl ratio are demarcated.Therefore, the Tumble and swirl and swirl ratio of target turbulence form, Bian Keshi need to be only inputted during experiment
Now corresponding deflector rotation angle, obtains the turbulent motion of object form.
To sum up, the turbulence form controllable device for fast press of the invention, including Combined guide flowing plate 8, transmission gear
Group 14, solenoid electric valve 10, rotation angle control encoder 6 and control module.The turbulence form control device is divided into transverse direction
Tumble flow form control unit 13 and longitudinal turbulence form control unit 14, are sequentially arranged at air intake duct.The control module packet
Include PLC control unit, host computer and PIV test systems.Wherein, host computer is connected with PLC control unit, PLC control unit and
PIV tests system is connected.According to artificial settings, system is tested using host computer and PLC controls 8 rotation angle of deflector, with
Reach the turbulent flow of object form.The configuration of the present invention is simple, it is only necessary to which initial stage test calibration is tested, by external adjustment parameter, just
The turbulent flow of object form is can reach, important function is played to studying combustion process under different turbulence forms and characteristic.
Claims (1)
1. a kind of turbulence form controllable method for fast press, used device includes being in turn secured to fast press air intake duct
The lateral tumble flow form control unit and longitudinal turbulence form control unit at place, solenoid electric valve and control module, wherein, laterally
Tumble flow form control unit is identical with longitudinal turbulence form control cellular construction, and installation site is different, the former is fastened transversely to institute
At the air intake duct stated, at the longitudinally fixed air intake duct of the latter, respectively including rotation angle control encoder, a combination
Formula deflector and a gear drive group；Combined guide flowing plate includes three deflectors being placed in parallel, the driving gear set
Including a gear wheel, two middle gears and three pinion gears, the transmission between each pinion gear and corresponding deflector be according to
It is realized by a transmission shaft with key；Control module is rapid in the cylinder of object form by the way that the angle of deflector is controlled to realize
Stream.Control mode is：The rotation of encoder control gear wheel is controlled by rotation angle, then is made by the deflecting of two middle gears
With making, three pinion gear direction of rotation are identical, make the direction of rotation of three deflectors identical with angle, realize the tune of turbulence form
Section method is：(1) pass through deflector angle box-like to different transverse sets and the corresponding Tumble and swirl of longitudinal combination type deflector angle
The calibration experiment carried out with swirl ratio determines to realize the required rotation angle control coding of turbulent flow in the cylinder of various object forms
Device angle；(2) after primary experiment, the residual gas in combustion chamber is emptied, and sheds the air pressure and braking at driving piston rear
Oil pressure in cylinder；Control module selects suitable rotation angle control according to the swirl ratio and Tumble and swirl of required object form
Encoder angular processed, then deflector is driven to rotate respective angles by the gearing of driving gear set and transmission shaft, it adjusts rapid
Manifold formula.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810003089.5A CN108167062A (en) | 2018-01-02 | 2018-01-02 | A kind of turbulence form controllable method for fast press |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810003089.5A CN108167062A (en) | 2018-01-02 | 2018-01-02 | A kind of turbulence form controllable method for fast press |
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| Publication Number | Publication Date |
|---|---|
| CN108167062A true CN108167062A (en) | 2018-06-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810003089.5A Pending CN108167062A (en) | 2018-01-02 | 2018-01-02 | A kind of turbulence form controllable method for fast press |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109238725A (en) * | 2018-11-17 | 2019-01-18 | 邵阳学院 | A kind of the constant volume combustion bomb device and its control system of analog turbulent motion |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202360235U (en) * | 2011-11-28 | 2012-08-01 | 天津内燃机研究所 | Intake port structure of small general gasoline engine |
| CN104763539A (en) * | 2015-03-12 | 2015-07-08 | 江苏上淮动力有限公司 | Method for improving air movement in natural gas engine cylinder |
| CN106441911A (en) * | 2016-06-29 | 2017-02-22 | 中国北方发动机研究所(天津) | Diesel engine intake swirl adjustable test device |
| CN107178416A (en) * | 2016-03-09 | 2017-09-19 | 福特环球技术公司 | Engine system with rotatable conducting element |
-
2018
- 2018-01-02 CN CN201810003089.5A patent/CN108167062A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202360235U (en) * | 2011-11-28 | 2012-08-01 | 天津内燃机研究所 | Intake port structure of small general gasoline engine |
| CN104763539A (en) * | 2015-03-12 | 2015-07-08 | 江苏上淮动力有限公司 | Method for improving air movement in natural gas engine cylinder |
| CN107178416A (en) * | 2016-03-09 | 2017-09-19 | 福特环球技术公司 | Engine system with rotatable conducting element |
| CN106441911A (en) * | 2016-06-29 | 2017-02-22 | 中国北方发动机研究所(天津) | Diesel engine intake swirl adjustable test device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109238725A (en) * | 2018-11-17 | 2019-01-18 | 邵阳学院 | A kind of the constant volume combustion bomb device and its control system of analog turbulent motion |
| CN109238725B (en) * | 2018-11-17 | 2024-05-10 | 邵阳学院 | Constant volume combustion bomb device capable of simulating turbulent motion and control system thereof |
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Application publication date: 20180615 |