CN107271188B - A kind of constant volume combustion bomb of analog vortex and tumble motion - Google Patents
A kind of constant volume combustion bomb of analog vortex and tumble motion Download PDFInfo
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- CN107271188B CN107271188B CN201710342520.4A CN201710342520A CN107271188B CN 107271188 B CN107271188 B CN 107271188B CN 201710342520 A CN201710342520 A CN 201710342520A CN 107271188 B CN107271188 B CN 107271188B
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- constant volume
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M15/00—Testing of engines
- G01M15/02—Details or accessories of testing apparatus
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Abstract
The present invention provides a kind of analog vortex and the constant volume combustion bombs of tumble motion, including constant volume combustion bomb main body and the vortex being connected with constant volume combustion bomb main body and tumble flow generating device, vortex and tumble flow generating device include fan, fan motor, motor transmission shaft and control device, the fan motor is located at the outside of constant volume combustion bomb main body, motor transmission shaft passes through the side wall of constant volume combustion bomb main body, fan is mounted on motor drive the tip of the axis, when simulating eddy motion, fan is horizontally disposed, when simulating tumble motion, fan is vertically arranged, the present invention has fuel valve cooling system and anti-explosion safety system, realize the effect for not only cooling down fuel injector but also heating firebomb air inlet, if and occurring the case where hypertonia in firebomb in experimentation, it is avoided that the generation of accident, present invention analog in the same constant volume combustion bomb is sent out The eddy motion of motivation cylinder interior gas and tumble motion, structure is simple, small in size, adapts to the needs of experimental site change.
Description
Technical field
The present invention relates to the constant volume combustions of engine test technical field more particularly to a kind of analog vortex and tumble motion
Burn bullet.
Background technique
Engine cylinder interior air-flow motion conditions have a major impact the formation of gaseous mixture and combustion process, and especially air inlet is whole
The structure in moment cylinder interior gas flow field will directly determine turbulence intensity, air velocity and cylinder fuel in kindling front air cylinder
Distribution situation, to influence the dynamic property of engine, economy and emission performance.Very due to engine In Cylinder Flow
Complexity, and cyclical variations are accompanied by, it is more difficult to the control of environmental condition, and be not easy to carry out observational study.Therefore, engine
Combustion research carried out on visual Simulation experimental provision mostly, constant volume combustion bomb is the knot using more experimental provision
Structure is simple and constructions cost is low, can easily study influence of the single parameter variation to combustion process.
Vortex and tumble flow are the principal modes of engine In Cylinder Flow, and analysis vortex or tumble flow are to in-cylinder combustion process
Influence it is necessary.Mostly in existing experimental provision is the influence for simulating turbulence intensity to in-cylinder combustion, the turbulent flow of this simulation
Intensity is also an attached measurement means in the numerous functions of experimental facilities, rather than quantitative study turbulent motion is to the shadow of burning
It rings.Chinese notification number is CN205262753U, title are as follows: a kind of " the controllable test constant volume bullet and control of turbulence intensity and position
Process patent, which can accurately measure turbulence intensity and position occurs for turbulent flow, but the device cannot be used to simulate gas
Vortex and tumble motion.
For gas tumble flow, simulator mostly uses air intake duct to generate tumble flow at present.For example, Chinese notification number is
The patent of CN205426525U discloses " engine total pressure difference air flue tumble flow experimental provision ", which passes through air intake duct
Generate tumble flow.This experimental provision huge structure that tumble flow is generated by air intake duct, construction is complicated, is not easy to move after platform building
It is dynamic, and cannot do and be vortexed experimental study in cylinder.Vortex generating means in cylinder are limited to more be transformed air intake duct or inlet valve with
Enhance vortex intensity, and this transformation is only for the repacking of engine air flue testing stand, it is impossible to be used in in-cylinder combustion analysis.
Summary of the invention
In response to the deficiencies in the existing technology, the present invention provides the constant volume burning of a kind of analog vortex and tumble motion
Bullet, the device generate gas using fan and flow, can not only do analog eddy current experiment but also can do tumble flow simulated experiment, and the dress
It is simplified, removable to set structure.
The present invention achieves the above technical objects by the following technical means.
The constant volume combustion bomb of a kind of analog vortex and tumble motion, including constant volume combustion bomb main body, further include vortex and
Tumble flow generating device, the vortex and tumble flow generating device are connected with constant volume combustion bomb main body；
The vortex and tumble flow generating device include fan, the fan motor for controlling fan, motor transmission shaft and control dress
It sets, the fan motor is located at the outside of constant volume combustion bomb main body, and the motor transmission shaft of fan motor passes through constant volume combustion bomb master
The side wall of body；
When simulating eddy motion, fan is mounted on one end of fan shaft, and the other end of fan shaft is fixed by fixing bearing
On pedestal, the rotation axis and electric-controlled fuel injector of fan are coaxial, and fan shaft passes through bevel gear and motor drive axis connection；
When simulating tumble motion, fan is mounted on motor drive the tip of the axis and is located at the end of electric-controlled fuel injector, fan
Rotation axis and motor transmission shaft it is coaxial；
The control device includes host computer, bottom PLC and speed probe, and host computer and bottom PLC connect
It connects, the next PLC is connect with speed probe, and the test macro and bottom PLC control module carried by host computer determines
The revolving speed of fan is to control the intensity of vortex and tumble flow.
Preferably, the constant volume combustion bomb main body includes constant volume bullet body and is installed on the constant volume bullet body bottom outside
Electric boiling plate, the constant volume bullet body are hollow cylindrical, and the side wall of constant volume bullet body is along the circumferential direction evenly distributed with four detachably
The upper end of observation window, constant volume bullet body is equipped with cover board, and the cover board is detachable, and cover board is equipped with electric-controlled fuel injector, pressure sensing
The side wall top of device and temperature sensor, constant volume bullet body is equipped with hot-wire anemometer measuring mouth, the pressure sensor and temperature
Sensor is connect with bottom PLC, the next PLC by pressure sensor and temperature sensor monitor the intracorporal pressure of constant volume bullet bullet and
Temperature.
Preferably, safety valve installing port, air inlet and exhaust outlet, the constant volume combustion bomb main body are additionally provided on the cover board
It further include anti-explosion safety system, the anti-explosion safety system includes safety valve, exhaust pipe and exhaust fan, the safety valve installation
On safety valve installing port, one end of the exhaust pipe is connect with exhaust fan, and the other end is connect with exhaust outlet.
Preferably, the constant volume combustion bomb main body further includes fuel valve cooling system, and the fuel valve cooling system includes
The center of cover board is arranged in blower, cooling line and fuel injector cooling chamber, the fuel injector cooling chamber, and electric-controlled fuel injector is set to spray
In oily device cooling chamber, cold air is led in fuel injector cooling chamber, fuel injector cooling chamber passes through pipeline for cooling chamber exhaust outlet and constant volume
The air inlet of firebomb body is connected.
Preferably, the motor transmission shaft passes through detachable observation window by transition apparatus, and the transition apparatus includes solid
The packing material being scheduled between the steel pipe and steel pipe and motor transmission shaft on detachable observation window, the packing material pass through taper
Sealing cover is compressed to be pressed between steel pipe and motor transmission shaft.
Preferably, the packing material uses Wear-resistant, high-temperature resistant elastic filling material.
Preferably, the taper compresses sealing cover and is threadedly secured on the steel pipe of transition apparatus, is detachably observing
Respectively there is a taper to compress sealing cover on the surfaces externally and internally of window.
Beneficial effects of the present invention:
1) present invention has vortex generating means and tumble flow generating device, can use sky in the same constant volume combustion bomb
The eddy motion of gas simulated engine cylinder interior gas and tumble motion；
2) fan motor of the present invention is installed on outside constant volume combustion bomb body, and fan motor does not need to bear firebomb
The cover board of high temperature, constant volume combustion bomb is detachable, and analog eddy current is facilitated to test the conversion between tumble flow simulated experiment；
3) constant volume combustion bomb of the invention has fuel valve cooling system, may be implemented not only to cool down fuel injector but also heats burning
Play the effect of air inlet；
4) constant volume combustion bomb of the invention has anti-explosion safety system, if occurring the pressure mistake in firebomb in experimentation
High situation, can be to avoid the generation of safety accident；
5) constant volume combustion bomb of the invention generates eddy motion and tumble motion using fan, and structure is simple, small volume,
It is suitable for the needs of experimental site change.
Detailed description of the invention
Fig. 1 is the vortex recurring structure schematic diagram of the constant volume combustion bomb of analog of the present invention vortex and tumble motion.
Fig. 2 is the tumble flow recurring structure schematic diagram of the constant volume combustion bomb of analog of the present invention vortex and tumble motion.
Fig. 3 is cover board top view of the present invention.
Wherein:
1: constant volume bullet body；2: quartz glass；3: cover board；4: observation window；5: pedestal；6: electric boiling plate；7: exhaust outlet；8:
Safety valve installing port；9: electric-controlled fuel injector；10: air inlet；11: fuel injector cooling chamber；12: cooling chamber exhaust outlet；13: cooling chamber
Air inlet；14: pressure sensor；15: temperature sensor；16: fan motor；17: motor transmission shaft；18: transition apparatus；19:
Fixing bearing；20: hot-wire anemometer measuring mouth；21: electric machine support；22: taper compresses sealing cover；23: fan；24: fixing axle
It holds；25: bevel gear.
Specific embodiment
Present invention will be further explained with reference to the attached drawings and specific examples, but protection scope of the present invention is simultaneously
It is without being limited thereto.
The constant volume combustion bomb of a kind of analog vortex and tumble motion, including constant volume combustion bomb main body and vortex and tumble flow hair
Generating apparatus, constant volume combustion bomb main body include constant volume bullet body 1 and the heating system for being installed on 1 bottom of constant volume bullet body, constant volume
Bullet body 1 is hollow cylindrical, can bear the pressure of 10MPa, the side wall of constant volume bullet body 1 be along the circumferential direction evenly distributed with four it is removable
Observation window 4 is unloaded, detachable observation window 4 is quartz glass 2, and the upper end of constant volume bullet body 1 is equipped with cover board 3, and the cover board 3 is removable
It unloads, to facilitate device and firebomb bullet in-vivo device on installation or replacement cover board.Cover board 3 is equipped with electric-controlled fuel injector 9, pressure passes
Sensor 14 and temperature sensor 15, safety valve installing port 8, air inlet 10, exhaust outlet 7, cooling chamber air inlet 13 and cooling chamber row
Air port 12.Electric-controlled fuel injector 9 is set to the center of cover board 3, and air inlet 10 is air intlet, and the other end is connected with air cleaner,
Hot-wire anemometer measuring mouth 26 is installed on 1 top of constant volume combustion bomb body and the side of one side intersection, can measure firebomb
Intracorporal eddy velocity or tumble flow speed are played, electric boiling plate 6 is covered in 5 outside of pedestal of constant volume bullet body 1, for heating burning
Room.The heating system includes the switch and conducting wire of electric boiling plate 6, control circuit, and the electric boiling plate 6 is covered in constant volume bullet bullet
5 outside of pedestal of body 1, for heating combustion chamber.
Constant volume combustion bomb main body is equipped with anti-explosion safety system and fuel valve cooling system, and the anti-explosion safety system includes
Safety valve, exhaust pipe and exhaust fan, the safety valve are mounted on safety valve installing port 8, one end of the exhaust pipe with
Exhaust fan connection, the other end are connect with exhaust outlet 7.When indoor pressure of burning is higher than setting value, safety valve is opened, and will be burnt
Indoor gas discharge, the safety valve are connected by pipeline with exhaust pipe；Described exhaust pipe one end and constant volume combustion bomb
Exhaust outlet is connected, and the other end is equipped with air exhauster and leads to outdoor.
Fuel valve cooling system includes blower, cooling line and fuel injector cooling chamber 11, and the fuel injector cooling chamber 11 is set
It sets at the center of cover board 3, electric-controlled fuel injector 9 is set in fuel injector cooling chamber 11, and cold air is led in fuel injector cooling chamber 11, is passed through
Cooling chamber exhaust outlet 12 is connected by pipeline with the air inlet 10 of constant volume combustion bomb body.
Vortex and tumble flow generating device include fan 23, the fan motor 16 for controlling fan 23, motor transmission shaft 17 and control
Device processed.Fan motor 16 is fixed on constant volume bullet body 1 by electric machine support 21, and the motor transmission shaft 17 of fan motor 16 is logical
It crosses transition apparatus 18 to pass through from the center of a detachable observation window, transition apparatus 18 includes the steel pipe being fixed on quartz glass
And packing material, the packing material are Wear-resistant, high-temperature resistant elastic filling material, packing material compresses sealing cover 22 by taper
It is pressed between steel pipe and motor transmission shaft 17, the taper compresses the steel that sealing cover 22 is threadedly secured to transition apparatus 18
Guan Shang respectively has a taper to compress sealing cover 22 on the surfaces externally and internally of detachable observation window 4.
When simulating eddy motion, fan 23 is mounted on one end of fan shaft, and the other end of fan shaft passes through fixing bearing 24
It is fixed on pedestal 5, the fan shaft and electric-controlled fuel injector 9 are coaxial, and fan shaft is connected by bevel gear 25 and motor transmission shaft 17
It connects.
When simulating tumble motion, fan 23 is vertically set on the end of motor transmission shaft 17, and is located at electric-controlled fuel injector 9
Lower section, motor transmission shaft 17 are located at the intracorporal part of constant volume combustion bomb master and are supported by fixing bearing 21 and bracket.
The control device includes host computer, bottom PLC and speed probe, and host computer and bottom PLC connect
It connects, the next PLC is connect with speed probe, pressure sensor 14 and temperature sensor 15, the survey carried by host computer
Test system and bottom PLC control module determine the revolving speed of fan 23 to control the intensity of vortex and tumble flow, and pass through pressure
Sensor 14 and temperature sensor 15 monitor the pressure and temperature in constant volume bullet body 1.
Electric-controlled fuel injector provides injection pressure by joint-track type oil supply system, and the joint-track type oil supply system includes high pressure oil
Pump, common rail pipe, electric-controlled fuel injector and common rail pipe pressure sensor, the high speed video system include that high-speed camera and optics are surveyed
Measuring appratus, the joint-track type oil supply system and high-speed photography system can realize synchronously control by host computer；.
The method tested using the constant volume combustion bomb of analog of the present invention vortex and tumble motion is as follows:
Each device of constant volume combustion bomb system is connected, is checked inside constant volume combustion bomb, it is ensured that cleaning, quartz window
Mouthful wiped clean, it is ensured that fuel oil supply system, fuel valve cooling system, heating system, high speed video system, air inlet system and exhaust system,
Vortex and tumble flow generating device and anti-explosion safety system readiness.
High-speed camera is opened, light compensating lamp can be installed when necessary, regulate the height and focal length of high-speed camera,
Enable video camera complete display takes observation window 4.Then it is always maintained at high-speed camera position and height is constant, make height
Fast video camera is maintained at state to be triggered, can close light compensating lamp at this time.
It is heated by electric boiling plate 6, and is passed through air toward constant volume combustion bomb body 1, to be carried out to constant volume bullet body 1
Pressurising, and be monitored by pressure sensor 14 and temperature sensor 15, until meeting needed for experiment in constant volume bullet body 1
Pressure and temperature.
Vortex or tumble flow generating device are opened, the revolving speed of fan motor 16 is regulated, makes to generate in constant volume combustion bomb body 1
Required vortex or tumble flow measure eddy velocity or tumble flow speed with hot-wire anemometer.
Co-rail oil injection system is opened, fuel injection pulsewidth, injection pressure, oil spout number are regulated, opens high-speed camera triggering
Channel, electric-controlled fuel injector 9 and high-speed camera synchronous working under PC control, record and preservation experimentation.
Change vortex flow fan or tumble flow rotation speed of the fan, or be different other influences factor, is thoroughly arranged by exhaust outlet 7
Removing exhaust gas, it is relatively high with the photographic quality for ensuring to shoot every time.
Finally, analysis data, to be vortexed or tumble flow influence characteristic, to complete to test.
The embodiment is a preferred embodiment of the present invention, but present invention is not limited to the embodiments described above, not
In the case where substantive content of the invention, any conspicuous improvement that those skilled in the art can make, replacement
Or modification all belongs to the scope of protection of the present invention.
Claims (7)
1. the constant volume combustion bomb of a kind of analog vortex and tumble motion, including constant volume combustion bomb main body, which is characterized in that also wrap
Vortex and tumble flow generating device are included, the vortex and tumble flow generating device are connected with constant volume combustion bomb main body；
The vortex and tumble flow generating device include fan (23), fan motor (16), the motor transmission shaft for controlling fan (23)
(17) and control device, the fan motor (16) are located at the outside of constant volume combustion bomb main body, and the motor of fan motor (16) passes
Moving axis (17) passes through the side wall of constant volume combustion bomb main body；
When simulating eddy motion, fan (23) is mounted on one end of fan shaft, and the other end of fan shaft passes through fixing bearing (24)
Be fixed on pedestal (5), the rotation axis of fan (23) and electric-controlled fuel injector (9) coaxially, fan shaft by bevel gear (25) with
Motor transmission shaft (17) connection；
When simulating tumble motion, fan (23) is mounted on the end of motor transmission shaft (17) and is located at the end of electric-controlled fuel injector (9)
End, the rotation axis and motor transmission shaft (17) of fan (23) are coaxial；
The control device includes host computer, bottom PLC and speed probe, and host computer is connect with bottom PLC, under
Position PLC and speed probe, the test macro and bottom PLC control module carried by host computer determine fan (23)
Revolving speed is to control the intensity of vortex and tumble flow.
2. the constant volume combustion bomb of analog vortex according to claim 1 and tumble motion, which is characterized in that the constant volume
Firebomb main body includes constant volume bullet body (1) and the electric boiling plate (6) for being installed on constant volume bullet body (1) bottom outside, described
Constant volume bullet body (1) is hollow cylindrical, and the side wall of constant volume bullet body (1) is along the circumferential direction evenly distributed with four detachable observation windows
(4), the upper end of constant volume bullet body (1) is equipped with cover board (3), and detachably, cover board (3) is equipped with electric-controlled fuel injector to the cover board (3)
(9), the side wall top of pressure sensor (14) and temperature sensor (15), constant volume bullet body (1) is measured equipped with hot-wire anemometer
Mouth (26), the pressure sensor (14) and temperature sensor (15) are connect with bottom PLC, and the next PLC passes through pressure sensor
(14) and temperature sensor (15) monitors the pressure and temperature in constant volume bullet body (1).
3. the constant volume combustion bomb of analog vortex according to claim 2 and tumble motion, which is characterized in that the cover board
(3) safety valve installing port (8), air inlet (10) and exhaust outlet (7) are additionally provided on, the constant volume combustion bomb main body further includes explosion-proof
Security system, the anti-explosion safety system include safety valve, exhaust pipe and exhaust fan, and the safety valve is mounted on safety valve peace
It fills on mouth (8), one end of the exhaust pipe is connect with exhaust fan, and the other end is connect with exhaust outlet (7).
4. the constant volume combustion bomb of analog vortex according to claim 2 and tumble motion, which is characterized in that the constant volume
Firebomb main body further includes fuel valve cooling system, and the fuel valve cooling system includes that blower, cooling line and fuel injector are cold
But chamber (11), at the center of cover board (3), electric-controlled fuel injector (9) is cooling set on fuel injector for fuel injector cooling chamber (11) setting
In chamber (11), cold air is led in fuel injector cooling chamber (11), fuel injector cooling chamber (11) passes through pipeline for cooling chamber exhaust outlet
(12) it is connected with the air inlet of constant volume combustion bomb body (10).
5. the constant volume combustion bomb of analog vortex according to claim 2 and tumble motion, which is characterized in that the motor
Transmission shaft (17) passes through detachable observation window (4) by transition apparatus (18), and the transition apparatus (18) is removable including being fixed on
The packing material between the steel pipe on observation window (4) and steel pipe and motor transmission shaft (17) is unloaded, the packing material passes through taper
Sealing cover (22) are compressed to be pressed between steel pipe and motor transmission shaft (17).
6. the constant volume combustion bomb of analog vortex according to claim 5 and tumble motion, which is characterized in that the filling
Material uses Wear-resistant, high-temperature resistant elastic filling material.
7. the constant volume combustion bomb of analog vortex according to claim 5 and tumble motion, which is characterized in that the taper
It compresses sealing cover (22) to be threadedly secured on the steel pipe of transition apparatus (18), the surfaces externally and internally in detachable observation window (4)
On respectively there is taper to compress sealing cover (22).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710342520.4A CN107271188B (en) | 2017-05-16 | 2017-05-16 | A kind of constant volume combustion bomb of analog vortex and tumble motion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710342520.4A CN107271188B (en) | 2017-05-16 | 2017-05-16 | A kind of constant volume combustion bomb of analog vortex and tumble motion |
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| Publication Number | Publication Date |
|---|---|
| CN107271188A CN107271188A (en) | 2017-10-20 |
| CN107271188B true CN107271188B (en) | 2019-05-31 |
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| CN201710342520.4A Expired - Fee Related CN107271188B (en) | 2017-05-16 | 2017-05-16 | A kind of constant volume combustion bomb of analog vortex and tumble motion |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112177826B (en) * | 2020-09-30 | 2022-04-08 | 中国汽车工程研究院股份有限公司 | External oil beam segmentation device, system and method of diesel engine oil injector |
| CN113375945A (en) * | 2021-06-18 | 2021-09-10 | 广西玉柴机器股份有限公司 | Simulation engine backfire generating device |
| CN113405802B (en) * | 2021-08-19 | 2021-12-21 | 潍柴动力股份有限公司 | Rolling flow test tool and rolling flow test equipment |
| CN115524125A (en) * | 2022-07-27 | 2022-12-27 | 江苏大学 | Cross wind spraying test system and test method |
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|---|---|---|---|---|
| JPH04164241A (en) * | 1990-10-26 | 1992-06-09 | Minoru Sakiyama | Combustion bomb for micro combustion calorimeter |
| CN204666367U (en) * | 2015-04-14 | 2015-09-23 | 江苏大学 | A kind of device of simulated engine cylinder endoparticle motion |
| CN105372072A (en) * | 2015-09-29 | 2016-03-02 | 华中科技大学 | Constant volume combustion bomb and combustion device with same |
| CN106198027A (en) * | 2016-08-25 | 2016-12-07 | 广西大学 | A kind of constant volume bullet system of simulated engine spray burning |
| CN106441907A (en) * | 2016-09-09 | 2017-02-22 | 哈尔滨工程大学 | Split type heating system for volume fixed incendiary bomb |
-
2017
- 2017-05-16 CN CN201710342520.4A patent/CN107271188B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04164241A (en) * | 1990-10-26 | 1992-06-09 | Minoru Sakiyama | Combustion bomb for micro combustion calorimeter |
| CN204666367U (en) * | 2015-04-14 | 2015-09-23 | 江苏大学 | A kind of device of simulated engine cylinder endoparticle motion |
| CN105372072A (en) * | 2015-09-29 | 2016-03-02 | 华中科技大学 | Constant volume combustion bomb and combustion device with same |
| CN106198027A (en) * | 2016-08-25 | 2016-12-07 | 广西大学 | A kind of constant volume bullet system of simulated engine spray burning |
| CN106441907A (en) * | 2016-09-09 | 2017-02-22 | 哈尔滨工程大学 | Split type heating system for volume fixed incendiary bomb |
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| CN107271188A (en) | 2017-10-20 |
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