CN205940993U - Can adjust flow in a flexible way pressure wave burning interact's visual combustion chamber - Google Patents
Can adjust flow in a flexible way pressure wave burning interact's visual combustion chamber Download PDFInfo
- Publication number
- CN205940993U CN205940993U CN201620861626.6U CN201620861626U CN205940993U CN 205940993 U CN205940993 U CN 205940993U CN 201620861626 U CN201620861626 U CN 201620861626U CN 205940993 U CN205940993 U CN 205940993U
- Authority
- CN
- China
- Prior art keywords
- cylinder
- pressure wave
- piston
- cylinder sleeve
- cylinder cap
- Prior art date
- 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.)
- Withdrawn - After Issue
Links
Landscapes
- Testing Of Engines (AREA)
Abstract
The utility model discloses a can adjust flow in a flexible way pressure wave burning interact's visual combustion chamber, include the glass gasket and the cylinder cap that are equipped with at the cylinder liner top from bottom to top, it has cylinder cap glass window to inlay on the cylinder cap, piston in the cylinder liner include with cylinder liner complex metal piston circle, the top of metal piston circle is inlayed and is had piston glass window, by under cylinder cap terminal surface, the glass packing ring is inboard, the cylinder liner is inboard and confined combustion chamber cavity has been formed to metal piston circle and piston glass window up end, be equipped with perpendicular intake duct on the cylinder cap, the top of cylinder liner is equipped with the level to be advanced / exhaust passage, and the level advances / exhaust passage is tangent with cylinder liner inner chamber gyration surface, be equipped with on the cylinder liner two entry orientations unanimous and all pressure wave surperficial tangent with the gyration of cylinder liner inner chamber and that lie in on the same horizontal plane enter the mouth. The utility model has the characteristics of flow field state and pressure wave are propagated and the overlay model can be adjusted in a flexible way, are convenient for carry out optical test to combustion processes complete in the jar.
Description
Technical field
This utility model belongs to a kind of optical test device for studying Engine combustion process, is mainly used in grinding
Study carefully flame propagation and end unburned gas spontaneous combustion process under different In-Cylinder Flow states, different pressures intensity of wave and overlay model,
Belong to combustion in IC engine technical field.
Background technology
Gasoline engine miniaturization reinforcement technique reduces with reference to the raising internal combustion engine thermal efficiency that plenum is current full blast
One of means of CO2 emission.However, with the raising of strengthening degree, occurring in that the Abnormal combustion phenomenons such as pinking, early combustion,
Make to produce violent pressure oscillations in cylinder, lead to engine efficiency to deteriorate even and destroy frame for movement, therefore, pinking, early combustion etc.
Abnormal combustion phenomenon is the Main Bottleneck factor limiting small-sized reinforcement technique further genralrlization and development.
The experiment of a large amount of scholars both at home and abroad and numerical simulation work are pointed out, flame propagation and end that spark plug sparking produces
Whether and its intensity the competition process of (near combustion chamber wall surface) gaseous mixture spontaneous combustion determines the generation of Abnormal combustion phenomenon.?
In induction stroke, different inlet structure makes to produce vortex and the tumble flow of varying strength in cylinder, in compression process, larger gas
Stream whirlpool group is crushed to less turbulence vortex group by compression, and turbulence vortex group can strengthen the transport process of scalar field in cylinder, promote molecule
Diffusion rate, especially by the boundary layer structure of impact near wall, directly acts on the spontaneous combustion process of end gas.Meanwhile,
Turbulence vortex group and the interaction of flame front of different scale, can affect flame front structural change flame propagation velocity, and then
Impact in-cylinder combustion process.Meanwhile, the thermal expansion being produced by burning can make to produce pressure wave in cylinder.Propagation in cylinder for the pressure wave
Local pressure can be led to be lifted with being superimposed, change unburned gas delay period and affect flame front (by flame plug igniting generation or logical
Cross spontaneous combustion produce) heat release.Under certain condition, pressure wave can be overlapped with flame front, and the combustion heat release of flame front improves
Pressure intensity of wave, pressure wave promotes combustion heat release, the detonation wave that this close coupling effect produces to the compression of combustion gas
It is considered as one of the reason lead to intense pressure to shake.Understand, in-cylinder combustion process is mainly subject to gas flowing, pressure-wave emission
React the impact of triple interaction with combustion chemistry.
At present, the optic test means being applied to internal combustion engine mainly have constant volume combustion bomb, rcm and optics to start
Machine device.Constant volume combustion bomb structure is simple, convenient test, but has certain gap with actual combustion in-cylinder combustion process.Fast Compression
Machine can be good at observing the spontaneous combustion process of combustion gas, and the interaction of pressure wave and flame, but due to there is no gas handling system,
It is difficult to carry out the research to burning for the flowing.Therefore, optical engine is best able to reflect to press close to petrol engine combustion practical situation
Experiment porch.Tsing-Hua University Wang Zhi et al., studies pressure oscillation and the chemical reaction coupling during pinking based on optical engine
The effect closed, can clearly observe flame propagation process by the design of transparent piston.Reitz of the pungent university of University of Wisconsin-Madison etc.
People, by removing an inlet valve of optical engine and installing optical window, the combustion gas reaction of observation compression ignition engine end
Process.But, the how flexible modulation Flow field effect that introduces pressure wave is the problem of urgent need to resolve in laboratory facilities.
Utility model content
For solving the problems, such as above-mentioned optical engine test, the utility model proposes a kind of new can flexible stream
The visualization combustor that dynamic-pressure wave-burning interacts, including cylinder sleeve, the surface of internal cavity of described cylinder sleeve is cylinder hodometer
Face, the top of described cylinder sleeve from bottom to top be provided with packing ring and cylinder cap, described cylinder cap is inlaid with cylinder cap glass vision panel；Described
It is provided with piston, described piston includes the metallic piston circle with cylinder sleeve cooperation, and the top of described metallic piston circle is inlaid with cylinder sleeve
Piston glass vision panel, by inside the lower surface of described cylinder cap, the inner side of packing ring, cylinder sleeve and metallic piston circle and piston glass vision panel
Upper surface constitute combustor cavity；Described cylinder cap is provided with spark plug mounting hole, pressure transducer installing hole and vertically enters
Air flue；The top of described cylinder sleeve is provided with horizontal import/exhaust road, and described horizontal import/exhaust road is tangent with cylinder sleeve inner chamber rotary surface,
Described cylinder sleeve is provided with two pressure wave entrances being located in same level, and the direction of two pressure wave entrances is consistent and equal
Tangent with described cylinder sleeve inner chamber rotary surface.
In this utility model, described packing ring is transparent glass seal.Described pressure wave entrance enters/arranges positioned at described level
The top of air flue.
Compared with prior art, the beneficial effects of the utility model are：
The pressure-wave emission of the pressure wave of varying strength and different mode can effectively be adjusted with overlay model.Cylinder
Interior flow regime includes vortex/Tumble and swirl can be realized flexibly adjusting and do not need to cover gas handling system more.End spontaneous combustion and master
Flame propagation process all can be observed by direct image pickup method, simultaneously it is also considered that arriving the application of laser testing method.
Brief description
Fig. 1 is that the present invention visualizes the schematic diagram that combustor forms structure；
Fig. 2-1 is the front view of the cylinder cap shown in Fig. 1；
Fig. 2-2 is the A-A sectional view of cylinder cap shown in Fig. 2-1；
Fig. 2-3 is the top view of cylinder cap shown in Fig. 2-1；
Fig. 3-1 is the front view of cylinder sleeve shown in Fig. 1；
Fig. 3-2 is the B-B sectional view of cylinder sleeve shown in Fig. 3-1；
Fig. 3-3 is the top view of cylinder sleeve shown in Fig. 3-1；
Fig. 4 visualizes the schematic diagram of combustor experimental system for the present invention；
Fig. 5 mainly tests and control device for present invention visualization combustor experimental system；
In figure：
1- cylinder cap glass vision panel 2- cylinder cap 3- packing ring
4- cylinder sleeve 5- metallic piston circle 6- piston glass vision panel
7- vertical air inlet road 8- pressure transducer installing hole 9- spark plug mounting hole
10- pressure wave entrance 11- horizontal import/exhaust road 12- high-speed camera
14-45 ° of illuminator 15- horizontal plate of 13-YAG laser instrument
16- pedestal
Specific embodiment
With specific embodiment, technical solutions of the utility model are described in further detail below in conjunction with the accompanying drawings, described
Specific embodiment only explains to this utility model, not in order to limit this utility model.
As shown in figure 1, this utility model can the visualization combustor that interacts of flexible flowing-pressure wave-burning,
Including cylinder sleeve 4, the surface of internal cavity of described cylinder sleeve 4 is cylinder rotary surface, the top of described cylinder sleeve 4 from bottom to top be provided with pad
Circle 3 and cylinder cap 2, such as Fig. 1, as shown in Fig. 2-1, Fig. 2-2 and Fig. 2-3, when using laser testing means, then this packing ring 3 is selected
Transparent glass seal, if not adopting laser testing means, this packing ring 3 is plain washer, and described cylinder cap 2 is inlaid with cylinder
Cover glass form 1, described cylinder cap 2 is provided with spark plug mounting hole 9, pressure transducer installing hole 8 and vertical air inlet road 7.
As shown in figure 4, being provided with piston in described cylinder sleeve 4, described piston includes the metallic piston circle 5 with cylinder sleeve 4 cooperation, institute
The top stating metallic piston circle 5 is inlaid with piston glass vision panel 6, by the lower surface of described cylinder cap, the inner side of packing ring 3, cylinder sleeve 4
The upper surface of side and metallic piston circle 5 and piston glass vision panel 6 constitutes combustor cavity.
As shown in Fig. 3-1, Fig. 3-2 and Fig. 3-3, the top of described cylinder sleeve 4 is provided with horizontal import/exhaust road 11, described level
Import/exhaust road 11 is tangent with cylinder sleeve 4 inner chamber rotary surface, and described cylinder sleeve 4 is provided with two pressure being located in same level
Ripple entrance 10, described pressure wave entrance 10 is located at the top in described horizontal import/exhaust road 11, the direction of two pressure wave entrances 10
Unanimously and all tangent with described cylinder sleeve 4 inner chamber rotary surface.
Embodiment：
As Fig. 4 by the way of this utility model visualization combustor is installed in the experimental system of laser testing means
Shown, cylinder sleeve 4 is installed on above pedestal 16, and transparent glass seal 3 is placed between cylinder cap 2 and cylinder sleeve 4.Regard positioned at cylinder cap glass
One high-speed camera 12 of the installation of window 1 upper vertical, its photographical light path passes through cylinder cap glass vision panel 1 just, for observation combustion
Burn room end unreacted fuel gas spontaneous combustion process.One horizontal plate 15 is fixed on pedestal 16, one 45 ° of illuminators 14 are installed on horizontal plate
On 15, and it is horizontally mounted a high-speed camera 12, its photographical light path is just passed sequentially through 45 ° of illuminators 14 and regarded with piston glass
Window 6, for observing plug ignition and flame propagation process.With glass seal 3 with high one YAG laser 13 of installation, thoroughly
Bright glass seal 3 is used for making laser light sheet pass through section of combustion chamber, and the laser light sheet of this YAG laser 13 transmitting passes through
Transparent glass seal 3 passes through combustor, for providing light source for laser testing means.
As shown in figure 5, the test of visualization combustor experimental system and control device mainly include spark plug, Electronic Control
Unit MOTEC ECU, fuel injector, high-pressure oil pump, transient pressure sensor, laser instrument, high speed camera, pressure wave generator,
Data collecting card and industrial computer, wherein, spark plug is installed in spark plug mounting hole 9, and by electronic control unit MOTEC ECU
It is controlled by high energy ignition coil；Fuel injector is arranged on vertical air inlet road 7 and horizontal import/exhaust road 11, and by electronics
Control unit MOTEC ECU carries out the control of fuel injection pulsewidth and oil spout phase place by high-pressure oil pump；In vertical air inlet road 7, level
Be respectively mounted on import/exhaust road 11 and two pressure wave imports 10 can independent control electromagnetic valve, by electronic control unit
The aperture of MOTEC ECU application valve body；Transient pressure sensor is installed in pressure transducer installing hole 8, cylinder pressure data
Collection, analysis passes through data collecting card and industrial computer with storage and jointly completes；The triggering of laser instrument, the control of high speed camera with
Image data acquiring, process and storage are completed jointly by data collecting card and industrial computer.Piston is connected with bent axle by connecting rod,
Bent axle controls rotating speed by electric dynamometer.Two pressure wave imports 10 are respectively connected to pressure wave generation dress by electromagnetic valve
Put.
Adjust flowing-pressure wave-burning phase interaction using the experimental system being provided with this utility model visualization combustor
Mode is as follows：
In induction stroke, having premixed sufficient unburned mixture can be entered by vertical air inlet road 7 and horizontal import/exhaust road 11
Enter in cylinder.The aperture of the electromagnetic valve 2 on electromagnetic valve 1 and horizontal import/exhaust road 11 on vertical air inlet road 7 determines level side respectively
To the air inflow with vertical direction, that is, determine the vortex/Tumble and swirl in cylinder.Due to the aperture continuously adjustabe of electromagnetic valve, in cylinder
Flow regime in theory can achieve stepless regulating.When piston goes upward to 2/3 stroke position in compression stroke, level
The mouth in import/exhaust road 11 is blocked by piston skirt and two pressure wave entrances are on piston-top surface.Two pressure waves
Entrance 10 passes through electromagnetic valve 3 respectively and electromagnetic valve 4 connects to pressure wave generator (as shock tube), now, if individually beaten
Open the pressure wave entrance of side, then pressure wave prolongs cylinder sleeve 4 inner side casing wall and propagates, and will not produce superposition it is believed that carrying out to end
More uniformly compress；If open pressure wave entrance 1 and the pressure wave entrance 2 of both sides simultaneously, two pressure waves can be in cylinder
Inside meet, be superimposed, jump region being partially formed pressure.When spark plug sparking forms initially fiery core by turbulent flame face shape
When becoming to propagate, different In-Cylinder Flow states, different pressures ripple are propagated with overlay model for flame propagation and end spontaneous combustion
Impact, can be observed with piston glass vision panel 6 and record by cylinder cap glass vision panel 1 respectively, and in-cylinder pressure is by installing
Transient pressure sensor on cylinder cap 2 is recorded.In descent of piston and when entering exhaust phase, horizontal import/exhaust road 11
On electromagnetic valve 2 open, burning waste gas through this discharge.Arrive this, a complete test loop terminates.
To sum up, tested using the visualization combustor of this utility model structure, vortex/Tumble and swirl and its intensity in cylinder
By can independent control and being located at respectively on the vertical air inlet road 7 horizontal import/exhaust road 9 tangent with inner surface of cylinder liner of cylinder cap 2
Electromagnetic valve 1 and 2 be adjusted.The propagation of in-cylinder pressure ripple and stacked system pass through can independent control and being located at respectively on cylinder sleeve
The electromagnetic valve 3 and 4 of two pressure wave entrances be controlled.Cylinder cap glass vision panel 1 Observable end unburned gas on cylinder cap
Combustion process.Transparent glass seal 3 is used for making laser light sheet pass through section of combustion chamber.The piston glass of top land regards
Window 6 Observable spark ignition, incipient flame communication process.Carry out experiment tool using the visualization combustor of this utility model structure
Have flow field state and pressure-wave emission and overlay model can flexible, be easy to carry out optics survey to complete combustion process in cylinder
The feature of examination.
Although being described to this utility model above in conjunction with figure, this utility model is not limited to above-mentioned tool
Body embodiment, above-mentioned specific embodiment is simply schematic, rather than determinate, those of ordinary skill in the art
Under enlightenment of the present utility model, in the case of without departing from this utility model objective, many variations can also be made, for example, change
Become spark-plug location and number, if then glass seal not being changed to plain washer using laser testing means, in cylinder cap or cylinder
Put install additional independent exhaust duct these belong to of the present utility model protection within.
Claims (3)
1. a kind of can the visualization combustor that interacts of flexible flowing-pressure wave-burning, including cylinder sleeve (4), described cylinder
The surface of internal cavity of set (4) is cylinder rotary surface；It is characterized in that：
The top of described cylinder sleeve (4) from bottom to top be provided with packing ring (3) and cylinder cap (2), described cylinder cap (2) is inlaid with cylinder cap glass
Glass form (1)；It is provided with piston, described piston includes the metallic piston circle (5) coordinating with cylinder sleeve (4), described in described cylinder sleeve (4)
The top of metallic piston circle (5) is inlaid with piston glass vision panel (6), by the lower surface of described cylinder cap, the inner side of packing ring (3), cylinder
Cover inside (4) and the upper surface of metallic piston circle (5) and piston glass vision panel (6) constitutes combustor cavity；
Described cylinder cap (2) is provided with spark plug mounting hole (9), pressure transducer installing hole (8) and vertical air inlet road (7)；
The top of described cylinder sleeve (4) is provided with horizontal import/exhaust road (11), described horizontal import/exhaust road (11) and cylinder sleeve (4) inner chamber
Rotary surface is tangent, and described cylinder sleeve (4) is provided with two pressure wave entrances (10) being located in same level, two pressure waves
The direction of entrance (10) is consistent and all tangent with described cylinder sleeve (4) inner chamber rotary surface.
2. according to claim 1 can the visualization combustor that interacts of flexible flowing-pressure wave-burning, it is special
Levy and be：Described packing ring (3) is transparent glass seal.
3. according to claim 1 or claim 2 can the visualization combustor that interacts of flexible flowing-pressure wave-burning, its
It is characterised by：Described pressure wave entrance (10) is located at the top of described horizontal import/exhaust road (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620861626.6U CN205940993U (en) | 2016-08-09 | 2016-08-09 | Can adjust flow in a flexible way pressure wave burning interact's visual combustion chamber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620861626.6U CN205940993U (en) | 2016-08-09 | 2016-08-09 | Can adjust flow in a flexible way pressure wave burning interact's visual combustion chamber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205940993U true CN205940993U (en) | 2017-02-08 |
Family
ID=57923317
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620861626.6U Withdrawn - After Issue CN205940993U (en) | 2016-08-09 | 2016-08-09 | Can adjust flow in a flexible way pressure wave burning interact's visual combustion chamber |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205940993U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106168540A (en) * | 2016-08-09 | 2016-11-30 | 天津大学 | Can flexible flowing pressure ripple burning interact visualization combustor |
-
2016
- 2016-08-09 CN CN201620861626.6U patent/CN205940993U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106168540A (en) * | 2016-08-09 | 2016-11-30 | 天津大学 | Can flexible flowing pressure ripple burning interact visualization combustor |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106168540B (en) | Can flexible modulation flowing-pressure wave-burning interaction visualization combustion chamber | |
| CN103245511B (en) | Constant-volume combustion bomb system for simulating self-combustion of gas at tail end of gasoline engine | |
| CN106370771A (en) | Device and method for realizing turbulent flame and shock wave visual constant volume combustion test | |
| Namazian et al. | Schlieren visualization of the flow and density fields in the cylinder of a spark-ignition engine | |
| Choi et al. | Modeling of the fuel injection and combustion process in a CNG direct injection engine | |
| CN106525443B (en) | A kind of the multi-functional combustion test device and test method of simulated engine condition | |
| Pera | An experimental database dedicated to the study and modelling of cyclic variability in spark-ignition engines with LES | |
| Hentschel | Optical diagnostics for combustion process development of direct-injection gasoline engines | |
| Liu et al. | CFD Simulation of Metal and Optical Configuration of a Heavy-Duty CI Engine Converted to SI Natural Gas. Part 1: Combustion Behavior | |
| Li et al. | Pre-chamber turbulent jet ignition of methane/air mixtures with multiple orifices in a large bore constant volume chamber: effect of air-fuel equivalence ratio and pre-mixed pressure | |
| CN104132775B (en) | Supercharging gasoline engine super detonation assay device and method of testing | |
| Cordier et al. | Increasing modern spark ignition engine efficiency: a comprehension study of high CR and Atkinson cycle | |
| CN108709749B (en) | Experimental system for simulating interaction between turbulent flame and wall surface oil film | |
| Lucchini et al. | Full-cycle CFD modeling of air/fuel mixing process in an optically accessible GDI engine | |
| CN205940993U (en) | Can adjust flow in a flexible way pressure wave burning interact's visual combustion chamber | |
| Tanov et al. | Effects of injection strategies on fluid flow and turbulence in partially premixed combustion (PPC) in a light duty engine | |
| Guibert et al. | An experimental investigation of the turbulence effect on the combustion propagation in a rapid compression machine | |
| D’Errico et al. | Application of a thermodynamic model with a complex chemistry to a cycle resolved knock prediction on a spark ignition optical engine | |
| Kammermann et al. | Generation of turbulence in a RCEM towards engine relevant conditions for premixed combustion based on CFD and PIV investigations | |
| Zhao et al. | Experimental and modeling investigations to improve the performance of the near-zero NOx emissions direct-injection hydrogen engine by injection optimization | |
| Tabata et al. | In-cylinder fuel distribution, flow field, and combustion characteristics of a mixture injected SI engine | |
| CN111664450B (en) | Visualization system for accelerating interaction of flame with multi-walled surface boundary | |
| Merola et al. | Experiments on knocking and abnormal combustion through optical diagnostics in a boosted spark ignition port fuel injection engine | |
| Schipperijn et al. | Imaging of engine flow and combustion processes | |
| CN106642193A (en) | Method and device for researching combustion phenomenon of distributor of combustion gas water heater |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20170208 Effective date of abandoning: 20180817 |
|
| AV01 | Patent right actively abandoned |