CN207866465U - A kind of wind driving fuel oil list drop accelerator - Google Patents
A kind of wind driving fuel oil list drop accelerator Download PDFInfo
- Publication number
- CN207866465U CN207866465U CN201820344092.9U CN201820344092U CN207866465U CN 207866465 U CN207866465 U CN 207866465U CN 201820344092 U CN201820344092 U CN 201820344092U CN 207866465 U CN207866465 U CN 207866465U
- Authority
- CN
- China
- Prior art keywords
- cylinder
- wind
- fuel oil
- jet pipe
- ducted fan
- 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.)
- Active
Links
Landscapes
- Jet Pumps And Other Pumps (AREA)
Abstract
The utility model is related to internal combustion engine direct injection technology fields, and in particular to a kind of wind driving fuel oil list drop accelerator.A kind of wind driving fuel oil list drop accelerator, including：Cylinder, ducted fan, single droplet discharging head, jet pipe；The cylinder is uprightly placed, and barrel top installs ducted fan, and stack shell bottom installs jet pipe, single droplet discharging head is installed in the middle part of cylinder.The advantageous effect of the utility model compared with the existing technology：Ducted fan wind-force size can be controlled by machine governor and power supply, and fan wind-force is bigger, and drop accelerates more apparent.It therefore, can be under the premise of not changing "T"-shaped needle support position, by adjusting the big minor adjustment list liquid drop speed of fan wind-force.
Description
Technical field：
The utility model is related to internal combustion engine direct injection technology fields, and in particular to a kind of wind driving fuel oil list drop acceleration dress
It sets.
Background technology：
From the point of view of world wide, gasoline engine is still the most important dynamic origin of passenger car.It is limited to high fuel economy
With low emission requirement, in-cylinder direct-jet cooperates with small-sized reinforcement technique that will be studied as gasoline engine in significant period of time from now on
Hot spot.However as injection pressure increase and the reinforcement of trend toward miniaturization, the phenomenon that fuel impingement wall surface, are inevitable.It hits
The fuel oil hit in top land forms oil film, forms pool fires in combustion, is that direct fuel-injection engine soot is mainly given birth to
At source.The fuel oil impinged upon on casing wall is mixed with machine oil, dilute lubricating oil, and the fretting wear between moving component is made to increase.
Even more serious, fuel impingement can make machine oil form early combustion because of the low and easy spontaneous combustion of machine oil burning point off into combustion chamber from wall surface
Phenomenon induces surface ignition and super detonation, seriously affects engine performance.
It is lured as it can be seen that the fuel colliding wall phenomenon in directly jetting gasoline engine is the main of Particulate Emission, oil dilution and super detonation
Because, and by stepping up and getting worse with the following injection system pressure, have become further increase engine at present
The efficiency key restriction factors granular material discharged with reduction.And the key to solve the above problems is research fuel droplets collision wall surface
Mechanism and its influence factor.
In recent years, domestic and international researcher hits wall to fuel oil list drop and has carried out numerous studies, it is intended to disclose drop and hit wall
Development behind face and Cracking Mechanism.However, experiment at present, which usually relies on single drop freely falling body, makes its acceleration, speed before wall surface is hit
Degree is usually no more than 4m/s, differs larger with liquid drop speed in actual engine.The condition that is put to the test limits, and high speed drop hits wall
Research is only capable of relying on operating automation.It is therefore desirable to provide a kind of wind driving fuel oil list drop accelerator, examination is filled up
Test the blank that high speed drop hits wall research.
Invention content：
The technical problem to be solved by the present invention is to provide a kind of wind to drive fuel oil list drop accelerator, fills up fuel oil
Hit the blank that wall experimental study high speed drop hits wall research.
To solve the above problems, the utility model uses following proposal：
A kind of wind driving fuel oil list drop accelerator, including：Cylinder 2, ducted fan 1, single droplet discharging head 4, jet pipe 6；
The cylinder is uprightly placed, and ducted fan is installed at the top of cylinder, and jet pipe, the middle part installation of cylinder are installed in the stack shell bottom of cylinder
Single droplet discharging head.
As the first preferred embodiment, the list droplet discharging head includes："T"-shaped needle support, hollow pinhead；" T "
Shape needle support is hollow, symmetrical along cylinder axis；"T"-shaped needle support center vertical pipeline is used for installing hollow pinhead；
The transverse port of "T"-shaped needle support connects fluid path.Preferably, the section of the "T"-shaped needle support vertically is to spin
Capitate reduces windage, reduces the influence to air-flow.It is further preferred that cylinder wall surface interior smooth, barrel top to middle and lower part
Twice vertical slots are opened, about cylinder axis central symmetry, slot is interior to be used for installing "T"-shaped needle support twice vertical slots.
As second of preferred embodiment, further include：Diversion pipe 3 between ducted fan and single droplet discharging head, it is described
Diversion pipe outer profile is cylinder, and diameter is equal with barrel bore, diversion pipe built-in cellular duct, and each honeycomb ducts are transversal
Face is identical, and each duct axis vertical is downward.Preferably, each honeycomb ducts cross section is regular hexagon.
As the third preferred embodiment, the jet pipe air inlet is mounted on cylinder lower edge, and there are three types of shapes for jet pipe, respectively
For gradual shrinkage, flaring type and scaling type.According to gas flow equation in jet pipe,Make gas in jet pipe
Stream accelerates, as Mach number M<When 1, jet pipe should be gradual shrinkage, i.e. dA<0；Work as M>When 1, jet pipe should be flaring type, i.e. dA>0；Work as gas
When stream increases to supersonic speed by subsonic speed, jet pipe should be scaling type.
As the 4th kind of preferred embodiment, the ducted fan includes：Duct 11, motor 13, flabellum 12；Duct is internally provided with
Motor fixing frame 111, motor are fixed at duct center by motor fixing frame, and motor output end connects flabellum；Duct wind
It is equal with cylinder air inlet bore to be fanned out to air port diameter, wind export direction face cylinder, ducted fan wind-force is adjustable, and wind-force size is by electricity
Machine governor and power supply control.
The advantageous effect of the utility model compared with the existing technology：
(1) ducted fan wind-force size can be controlled by machine governor and power supply, and fan wind-force is bigger, and drop acceleration is got over
Obviously.It therefore, can be under the premise of not changing "T"-shaped needle support position, by adjusting the big minor adjustment list drop speed of fan wind-force
Degree.
(2) in embodiment, "T"-shaped needle support can move up and down in cylinder vertical slots, change single drop in cylinder
The distance of interior acceleration, distance is bigger, accelerates more apparent.Therefore, can pass through under the premise of not changing ducted fan wind-force size
It adjusts " T " needle support position and adjusts single liquid drop speed.
(3) in embodiment, the diversion pipe that honeycomb cross-sectional cell is carried in cylinder can make air-flow reach "T"-shaped syringe needle branch
Become laminar flow when frame, is conducive to single drop and is detached from after syringe needle in cylinder with stable motion route, single drop is contributed to go out spray
Guan Hou, rum point are fixed, convenient for follow-up shooting.
(4) in embodiment, there are three types of shapes for jet pipe：Gradual shrinkage, flaring type and scaling type.When air velocity in jet pipe
When less than local wind speed, using gradual shrinkage jet pipe；When wind speed is more than local wind speed in jet pipe jet pipe, using flaring type jet pipe.
Using jet pipe, wind velocity can be made further to increase, be conducive to drop speedup.
Description of the drawings：
Fig. 1 is the assembling schematic diagram of the wind driving fuel oil list drop accelerator in the utility model embodiment；In figure, 1
Ducted fan is represented, 2 represent cylinder, and 3 represent diversion pipe, and 4 represent needle support, and 5 represent syringe needle, and 6 represent jet pipe.
Fig. 2 is the exploded perspective view of Fig. 1；In figure, 2 represent cylinder, and 3 represent diversion pipe, and 4 represent needle support, and 5 represent
Syringe needle, 6 represent jet pipe, and 11 represent duct, and 12 represent flabellum, and 13 represent motor.
Fig. 3 is ducted fan exploded perspective view in embodiment；12 represent flabellum, and 13 represent motor.
Fig. 4 is ducted fan fixed rack structure schematic diagram in embodiment；In figure, 111 represent motor fixing frame.
Fig. 5 is needle support structural schematic diagram.
Fig. 6 is the front view of Fig. 5.
Fig. 7 is Fig. 6 along A-A sectional views.
Fig. 8 is Fig. 6 along B-B sectional views.
Fig. 9 is Fig. 7 along C-C sectional views.
Figure 10 is draft tube structure schematic diagram in the utility model embodiment.
Figure 11 is Figure 10 along A-A sectional views.
Figure 12 is gradual shrinkage nozzle structure schematic diagram in utility model embodiment.
Figure 13 is flaring type nozzle structure schematic diagram in utility model embodiment.
Figure 14 is scaling type nozzle structure schematic diagram in utility model embodiment.
Specific implementation mode：
Embodiment：
In conjunction with Fig. 1-14, illustrate the embodiment of the utility model.
A kind of wind driving fuel oil list drop accelerator, including：Cylinder 2, ducted fan 1, single droplet discharging head 4, jet pipe 6,
Diversion pipe 3；The cylinder is uprightly placed, and ducted fan is installed at the top of cylinder, and jet pipe is installed in the stack shell bottom of cylinder, cylinder
The single droplet discharging head of middle part installation, the diversion pipe 3 are located between ducted fan and single droplet discharging head；
It is described list droplet discharging head include："T"-shaped needle support, hollow pinhead；The "T"-shaped needle support is hollow, along circle
Cylinder axis is symmetrical；"T"-shaped needle support center vertical pipeline is used for installing hollow pinhead；"T"-shaped needle support it is hollow
Pipeline places syringe pump infusion tube, and hose one end is directly connect with hollow pinhead, and the hose other end connects fluid path, the present embodiment
Middle fluid path is gasoline passage；The section of the "T"-shaped needle support vertically is spindle, reduces windage, is reduced to gas
The influence of stream.Cylinder wall surface interior smooth, barrel top to middle and lower part open twice vertical slots, and twice vertical slots are about cylinder axis
Central symmetry, slot is interior to be used for installing "T"-shaped needle support.
The diversion pipe outer profile is cylinder, and diameter is equal with barrel bore, diversion pipe built-in cellular duct, each
Honeycomb ducts cross section is identical and is regular hexagon, and each duct axis vertical is downward；This structure laminar condition of diversion pipe is good,
It is small by turbulent flow interference, become laminar winds as possible before the turbulent wind that fan is blown can be made to reach hollow pinhead.
The jet pipe air inlet is mounted on cylinder lower edge, and there are three types of shapes, respectively gradual shrinkage, flaring type and contracting for jet pipe
Put type.According to gas flow equation in jet pipe,Air-flow in jet pipe is set to accelerate, as Mach number M<1
When, jet pipe should be gradual shrinkage, i.e. dA<0；Work as M>When 1, jet pipe should be flaring type, i.e. dA>0；When air-flow increases to Supersonic by subsonic speed
When fast, jet pipe should be scaling type.The present embodiment ducted fan wind speed is subsonic speed, therefore uses gradual shrinkage jet pipe.
The ducted fan includes：Duct 11, motor 13, flabellum 12；Duct is internally provided with motor fixing frame 111, motor
It is fixed at duct center by motor fixing frame, motor output end connects flabellum；Ducted fan outlet air bore and cylinder into
Air port diameter is equal, and wind export direction face cylinder, ducted fan wind-force is adjustable, and wind-force size is by machine governor and power supply control
System.
Claims (9)
1. a kind of wind drives fuel oil list drop accelerator, which is characterized in that including：Cylinder (2), ducted fan (1), single drop
Nozzle (4), jet pipe (6)；The cylinder is uprightly placed, and ducted fan, the stack shell bottom installation spray of cylinder are installed in the top of cylinder
Pipe, the single droplet discharging head of middle part installation of cylinder.
2. a kind of wind drives fuel oil list drop accelerator according to claim 1, which is characterized in that the list droplet discharging head
Including："T"-shaped needle support, hollow pinhead；The "T"-shaped needle support is hollow, symmetrical along cylinder axis；"T"-shaped needle
Head bracket center vertical pipeline is used for installing hollow pinhead；The transverse port of "T"-shaped needle support connects fluid path.
3. a kind of wind drives fuel oil list drop accelerator according to claim 2, which is characterized in that the "T"-shaped syringe needle
The section of holder vertically is spindle, reduces windage, reduces the influence to air-flow.
4. a kind of wind drives fuel oil list drop accelerator according to claim 3, which is characterized in that cylinder wall surface interior lights
Sliding, barrel top to middle and lower part opens twice vertical slots, and about cylinder axis central symmetry, slot is interior to be used for installing twice vertical slots
"T"-shaped needle support.
5. a kind of wind drives fuel oil list drop accelerator according to claim 1, which is characterized in that further include：Positioned at culvert
Diversion pipe (3) between road fan and single droplet discharging head, the diversion pipe outer profile are cylinder, diameter and barrel bore phase
Deng diversion pipe built-in cellular duct, each honeycomb ducts cross section is identical, and each duct axis vertical is downward.
6. a kind of wind drives fuel oil list drop accelerator according to claim 5, which is characterized in that each honeycomb hole
Road cross section is regular hexagon.
7. driving fuel oil list drop accelerator according to a kind of wind described in claim 1-6 any one, which is characterized in that described
Jet pipe air inlet is mounted on cylinder lower edge, and there are three types of shapes, respectively gradual shrinkage, flaring type and scaling type for jet pipe.
8. a kind of wind drives fuel oil list drop accelerator according to claim 7, which is characterized in that according to gas in jet pipe
Flow equation,Air-flow in jet pipe is set to accelerate, as Mach number M<When 1, jet pipe should be gradual shrinkage, i.e.,
dA<0；Work as M>When 1, jet pipe should be flaring type, i.e. dA>0；When air-flow increases to supersonic speed by subsonic speed, jet pipe should be scaling type.
9. driving fuel oil list drop accelerator according to a kind of wind described in claim 1-6 any one, which is characterized in that described
Ducted fan includes：Duct (11), motor (13), flabellum (12)；Duct is internally provided with motor fixing frame (111), and motor passes through
Motor fixing frame is fixed at duct center, and motor output end connects flabellum；Ducted fan outlet air bore and cylinder air inlet
Diameter is equal, and wind export direction face cylinder, ducted fan wind-force is adjustable, and wind-force size is controlled by machine governor and power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820344092.9U CN207866465U (en) | 2018-03-14 | 2018-03-14 | A kind of wind driving fuel oil list drop accelerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820344092.9U CN207866465U (en) | 2018-03-14 | 2018-03-14 | A kind of wind driving fuel oil list drop accelerator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207866465U true CN207866465U (en) | 2018-09-14 |
Family
ID=63455938
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820344092.9U Active CN207866465U (en) | 2018-03-14 | 2018-03-14 | A kind of wind driving fuel oil list drop accelerator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207866465U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108458853A (en) * | 2018-03-14 | 2018-08-28 | 天津大学 | A kind of list drop accelerator |
| CN110207947A (en) * | 2019-05-08 | 2019-09-06 | 南京航空航天大学 | Drop accelerator and method |
-
2018
- 2018-03-14 CN CN201820344092.9U patent/CN207866465U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108458853A (en) * | 2018-03-14 | 2018-08-28 | 天津大学 | A kind of list drop accelerator |
| CN110207947A (en) * | 2019-05-08 | 2019-09-06 | 南京航空航天大学 | Drop accelerator and method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104019465B (en) | The super combustion chamber of turbine base combined cycle engine | |
| CN207866465U (en) | A kind of wind driving fuel oil list drop accelerator | |
| CN103149009B (en) | Supersonic speed distance piece flow tunnel testing device | |
| CN103266922B (en) | Turbine stator blade with interstage combustor | |
| CN109339875B (en) | A kind of mixing diffuser of band bypass bleed | |
| CN201858046U (en) | Pulse detonation engine realizing secondary detonation | |
| CN103969020A (en) | Supersonic airflow generation system beneficial to uniform scattering of nano particles | |
| CN103953461B (en) | A kind of mechanical valve that reduces air inlet of air-breathing pulse detonation engine back-pressure | |
| US7553348B2 (en) | Inducing air | |
| US7464691B2 (en) | Mixing element for creating a vortex motion in an inlet manifold of an internal combustion engine | |
| CN111272432B (en) | Air inlet pulsation back pressure generation test device based on cam and jet flow mechanism | |
| CN108458853A (en) | A kind of list drop accelerator | |
| CN104819484B (en) | A kind of vapor flame holder radially lighted a fire | |
| CN209083430U (en) | The turbofan punching press combined engine of rocket built in a kind of outer culvert | |
| CN103018018A (en) | Atomization mechanism research and test platform | |
| CN100389250C (en) | Inlet guider of IC engine and IC engine therewith | |
| CN216554182U (en) | Methanol engine fuel injection atomizing system, methanol engine and vehicle | |
| CN205807407U (en) | The combustion mechanism of fuel injection device | |
| CN208236533U (en) | A kind of nozzle arrangements of heavy type methanol engine multi-point injection | |
| CN201610801U (en) | Baffling type air inlet unit of pulse detonation engine | |
| CN206816412U (en) | A kind of gaseous fuel engine charge pipe-line system | |
| CN208222510U (en) | A kind of double fuel air-swirl burner | |
| CN111706878A (en) | Double oil-way opposite-impact direct-injection type nozzle | |
| CN111878253A (en) | Wave-lobe rocket nozzle and rocket base combined circulating propulsion system | |
| CN108457785A (en) | A kind of nozzle arrangements of heavy type methanol engine multi-point injection |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |