CN107271188A - It is a kind of to simulate vortex and the constant volume combustion bomb of tumble motion - Google Patents
It is a kind of to simulate vortex and the constant volume combustion bomb of tumble motion Download PDFInfo
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- CN107271188A CN107271188A CN201710342520.4A CN201710342520A CN107271188A CN 107271188 A CN107271188 A CN 107271188A CN 201710342520 A CN201710342520 A CN 201710342520A CN 107271188 A CN107271188 A CN 107271188A
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- constant volume
- fan
- combustion bomb
- vortex
- volume combustion
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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
Vortex and the constant volume combustion bomb of tumble motion are simulated the invention provides a kind of, the vortex and tumble flow generating means being connected including constant volume combustion bomb main body and with constant volume combustion bomb main body, vortex and tumble flow generating means include fan, fan electromotor, motor transmission shaft and control device, the fan electromotor 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 arranged on the end of motor transmission shaft, when simulating eddy motion, fan is horizontally disposed with, 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 having cooled down fuel injector but also having heated firebomb air inlet, if and occur the situation of the hypertonia in firebomb in experimentation, it is avoided that the generation of accident, the present invention in same constant volume combustion bomb can simulated engine cylinder interior gas eddy motion and tumble motion, it is simple in construction, small volume, the need for adapting to experimental site change.
Description
Technical field
The present invention relates to engine test technical field, more particularly to a kind of constant volume combustion for simulating vortex and tumble motion
Burn bullet.
Background technology
Formation and combustion process of the engine cylinder interior air-flow motion conditions to gaseous mixture have a major impact, and especially air inlet is whole
The structure in moment cylinder interior gas flow field will be determined directly to catch fire turbulence intensity, air velocity and cylinder fuel in front air cylinder
Distribution situation, so as to influence the dynamic property of engine, economy and emission performance.Due to engine In Cylinder Flow very
Complexity, and with cyclical variations, the control to environmental condition is more difficult, and be difficult to carry out observational study.Therefore, engine
Combustion research mostly on visual Simulation experimental provision carry out, constant volume combustion bomb be use more experimental provision, its tie
Structure is simple and constructions cost is low, can easily study influence of the single parameter change 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
Ring.Chinese notification number is CN205262753U, entitled：" the controllable test constant volume bullet of a kind of turbulence intensity and position and control
Process patent, the patent of invention can accurately measure turbulence intensity and position occurs for turbulent flow, but the device can not be used for simulating gas
Vortex and tumble motion.
For gas tumble flow, tumble flow is produced using air intake duct more than current analogue means.For example, Chinese notification number is
CN205426525U patent, discloses " engine total head difference air flue tumble flow experimental provision ", the experimental provision passes through air intake duct
Produce tumble flow.This experimental provision huge structure that tumble flow is produced by air intake duct, construction is complicated, is difficult to move after platform building
It is dynamic, and vortex experimental study in cylinder can not be done.For being limited to vortex generating means in cylinder more transformation air intake duct or inlet valve with
Strengthen strength of vortex, and this transformation is only for the repacking of engine air flue testing stand, it is impossible to be used in and in-cylinder combustion is analyzed.
The content of the invention
For Shortcomings in the prior art, the invention provides a kind of constant volume burning for simulating vortex and tumble motion
Bullet, the device produces gas flowing using fan, can not only do analog eddy current experiment but also can do tumble flow simulated experiment, and the dress
Structure is put to simplify, may move.
The present invention is to realize above-mentioned technical purpose by following technological means.
It is a kind of simulate vortex and the constant volume combustion bomb of tumble motion, including constant volume combustion bomb main body, in addition to vortex and
Tumble flow generating means, vortex and the tumble flow generating means is connected with constant volume combustion bomb main body；
The vortex and tumble flow generating means include fan, the fan electromotor for controlling fan, motor transmission shaft and control dress
Put, the fan electromotor is located at the outside of constant volume combustion bomb main body, the motor transmission shaft of fan electromotor passes through constant volume combustion bomb master
The side wall of body；
When simulating eddy motion, fan is arranged on one end of fan shaft, and the other end of fan shaft is fixed by fixing bearing
On base, the rotation axis of fan is coaxial with electric-controlled fuel injector, and fan shaft is connected by bevel gear with motor transmission shaft；
When simulating tumble motion, fan is arranged on the end of motor transmission shaft and positioned 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 connects with bottom PLC
Connect, the next PLC is connected with speed probe, the test system and bottom PLC control modules carried by host computer is determined
The rotating speed of fan is so as to controlled vortex flow and the intensity of 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 is hollow cylindrical, the side wall of constant volume bullet body along the circumferential direction uniform four it is detachable
Observation window, the upper end of constant volume bullet body is provided with cover plate, and the cover plate is detachable, and cover plate is provided with electric-controlled fuel injector, pressure sensing
Device and temperature sensor, the side wall top of constant volume bullet body measure mouth, the pressure sensor and temperature provided with hot-wire anemometer
Sensor is connected with bottom PLC, the next PLC by the pressure in pressure sensor and temperature sensor monitors constant volume bullet body and
Temperature.
Preferably, safety valve installing port, air inlet and exhaust outlet, the constant volume combustion bomb main body are additionally provided with the cover plate
Also include anti-explosion safety system, the anti-explosion safety system includes safety valve, discharge duct and air exhauster, and the safety valve is installed
On safety valve installing port, one end of the discharge duct is connected with air exhauster, and the other end is connected with exhaust outlet.
Preferably, the constant volume combustion bomb main body also includes fuel valve cooling system, and the fuel valve cooling system includes
Blower fan, cooling line and fuel injector cooling chamber, the fuel injector cooling chamber are arranged on the center of cover plate, and electric-controlled fuel injector is located at spray
In oily device cooling chamber, cold air is led in fuel injector cooling chamber, fuel injector cooling chamber is by pipeline by cooling chamber exhaust outlet and constant volume
The air inlet of firebomb body is connected.
Preferably, the motor transmission shaft is by transition apparatus through detachable observation window is determined, and the transition apparatus includes
The packing material between the steel pipe on detachable observation window and steel pipe and motor transmission shaft is fixed on, the packing material passes through cone
Shape pressing plate for sealing lid is 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 closure and is threadedly secured on the steel pipe of transition apparatus, is detachably observing
Respectively there is a taper to compress closure 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 means, and sky can be utilized in same constant volume combustion bomb
The eddy motion of gas simulated engine cylinder interior gas and tumble motion；
2) fan electromotor of the present invention is installed on outside constant volume combustion bomb body, and fan electromotor need not bear firebomb
High temperature, the cover plate of constant volume combustion bomb is detachable, facilitates analog eddy current to test the conversion between tumble flow simulated experiment；
3) constant volume combustion bomb of the invention has fuel valve cooling system, it is possible to achieve has not only cooled down fuel injector but also has heated burning
Snap into the effect of gas；
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 avoid the generation of security incident；
5) constant volume combustion bomb of the invention produces eddy motion and tumble motion using fan, simple in construction, small volume,
The need for being suitable for experimental site change.
Brief description of the drawings
Fig. 1 is the vortex recurring structure schematic diagram of the present invention for simulating vortex and the constant volume combustion bomb of tumble motion.
Fig. 2 is the tumble flow recurring structure schematic diagram of the present invention for simulating vortex and the constant volume combustion bomb of tumble motion.
Fig. 3 is cover plate top view of the present invention.
Wherein：
1：Constant volume bullet body；2：Quartz glass；3：Cover plate；4：Observation window；5：Base；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 electromotor；17：Motor transmission shaft；18：Transition apparatus；19：
Fixing bearing；20：Hot-wire anemometer measures mouth；21：Electric machine support；22：Conical pressure plate closure；23：Fan；24：Fixing axle
Hold；25：Bevel gear.
Embodiment
Below in conjunction with the accompanying drawings and specific embodiment the present invention is further illustrated, but protection scope of the present invention is simultaneously
Not limited to this.
It is a kind of to simulate vortex and the constant volume combustion bomb of tumble motion, including constant volume combustion bomb main body and vortex and tumble flow hair
Generating apparatus, constant volume combustion bomb main body includes constant volume bullet body 1 and is installed on the heating system of the bottom of constant volume bullet body 1, constant volume
Bullet body 1 is hollow cylindrical, can bear 10MPa pressure, the side wall of constant volume bullet body 1 along the circumferential direction uniform 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 provided with cover plate 3, and the cover plate 3 is removable
Unload, device and firebomb bullet in-vivo device on cover plate are installed or change to facilitate.Cover plate 3 is passed provided with electric-controlled fuel injector 9, pressure
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 located at the center of cover plate 3, and air inlet 10 is air intlet, and the other end is connected with air cleaner,
Hot-wire anemometer measurement mouth 26, measurable firebomb are installed on the side that the top of constant volume combustion bomb body 1 and its one side intersect
Eddy velocity or tumble flow speed in body, electric boiling plate 6 are covered in the outside of base 5 of constant volume bullet body 1, for heating burning
Room.The heating system includes electric boiling plate 6, controls the switch and wire of circuit, and the electric boiling plate 6 is covered in constant volume bullet bullet
The outside of base 5 of body 1, for heating combustion chamber.
Constant volume combustion bomb main body is provided with anti-explosion safety system and fuel valve cooling system, and the anti-explosion safety system includes
Safety valve, discharge duct and air exhauster, the safety valve be arranged on safety valve installing port 8 on, one end of the discharge duct with
Air exhauster is connected, and the other end is connected with exhaust outlet 7.When the pressure in combustion chamber is higher than setting value, safety valve is opened, and will be burnt
Indoor gas discharge, the safety valve is connected by pipeline with discharge duct；Described discharge duct one end and constant volume combustion bomb
Exhaust outlet is connected, and the other end is provided with air exhauster and leads to outdoor.
Fuel valve cooling system includes blower fan, cooling line and fuel injector cooling chamber 11, and the fuel injector cooling chamber 11 is set
Put at the center of cover plate 3, electric-controlled fuel injector 9 leads to cold air, passed through in fuel injector cooling chamber 11 in fuel injector cooling chamber 11
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 means include fan 23, the fan electromotor 16 for controlling fan 23, motor transmission shaft 17 and control
Device processed.Fan electromotor 16 is fixed on constant volume bullet body 1 by electric machine support 21, and the motor transmission shaft 17 of fan electromotor 16 leads to
The center for crossing transition apparatus 18 from a detachable observation window is passed through, and transition apparatus 18 includes the steel pipe being fixed on quartz glass
And packing material, the packing material is Wear-resistant, high-temperature resistant elastic filling material, and packing material compresses closure 22 by taper
It is pressed between steel pipe and motor transmission shaft 17, the taper compresses the steel that closure 22 is threadedly secured to transition apparatus 18
Guan Shang, respectively has a taper to compress closure 22 on the surfaces externally and internally of detachable observation window 4.
When simulating eddy motion, fan 23 is arranged on one end of fan shaft, and the other end of fan shaft passes through fixing bearing 24
It is fixed on base 5, the fan shaft and electric-controlled fuel injector 9 are coaxial, and fan shaft is connected by bevel gear 25 with motor transmission shaft 17
Connect.
When simulating tumble motion, fan 23 is vertically set on the end of motor transmission shaft 17, and positioned at electric-controlled fuel injector 9
Lower section, the part that motor transmission shaft 17 is located in constant volume combustion bomb main body is supported by fixing bearing 21 and support.
The control device includes host computer, bottom PLC and speed probe, and host computer connects with bottom PLC
Connect, the next PLC is connected with speed probe, pressure sensor 14 and temperature sensor 15, the survey carried by host computer
Test system and bottom PLC control modules determine the rotating speed of fan 23 so as to controlled vortex flow and the intensity of tumble flow, and pass through pressure
Pressure and temperature in sensor 14 and the monitoring constant volume bullet of temperature sensor 15 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 hydraulic oil
Pump, common rail pipe, electric-controlled fuel injector and common rail pipe pressure sensor, the high speed video system includes high-speed camera and optics is surveyed
Measuring appratus, the joint-track type oil supply system and high-speed photography system can realize Synchronization Control by host computer；.
It is as follows using the constant volume combustion bomb method tested of the present invention for simulating vortex and tumble motion：
Each device of constant volume combustion bomb system is connected, 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 means and anti-explosion safety system readiness.
High-speed camera is opened, light compensating lamp can be installed when necessary, the height and focal length of high-speed camera is regulated,
Enable video camera complete display photographs observation window 4.Then it is always maintained at high-speed camera position and highly constant, makes height
Fast video camera is maintained at state to be triggered, can now close light compensating lamp.
Heated by electric boiling plate 6, and air is passed through 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, needed for experiment is met in constant volume bullet body 1
Pressure and temperature.
Vortex or tumble flow generating means are opened, the rotating speed of fan electromotor 16 is regulated, makes generation in constant volume combustion bomb body 1
Required vortex or tumble flow, eddy velocity or tumble flow speed are measured with hot-wire anemometer.
Co-rail oil injection system is opened, fuel injection pulsewidth, injection pressure, oil spout number of times is regulated, high-speed camera triggering is opened
Passage, 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 different other influences factors, thoroughly arranged by exhaust outlet 7
Removing exhaust gas, to ensure that the photographic quality shot every time is higher.
Finally, analyze data, to be vortexed or tumble flow influence characteristic, so as to complete experiment.
For the present invention preferred embodiment, but the present invention is not limited to above-mentioned embodiment to the embodiment, not
In the case of the substantive content of the present invention, any conspicuously improved, replacement that those skilled in the art can make
Or modification belongs to protection scope of the present invention.
Claims (7)
1. a kind of simulate vortex and the constant volume combustion bomb of tumble motion, including constant volume combustion bomb main body, it is characterised in that also wraps
Vortex and tumble flow generating means are included, vortex and the tumble flow generating means is connected with constant volume combustion bomb main body；
The vortex and tumble flow generating means include fan (23), fan electromotor (16), the motor transmission shaft of control fan (23)
(17) and control device, the fan electromotor (16) is located at the outside of constant volume combustion bomb main body, and the motor of fan electromotor (16) is passed
Moving axis (17) passes through the side wall of constant volume combustion bomb main body；
When simulating eddy motion, fan (23) is arranged on one end of fan shaft, and the other end of fan shaft passes through fixing bearing (24)
Be fixed on base (5), the rotation axis of fan (23) with electric-controlled fuel injector (9) coaxially, fan shaft by bevel gear (25) with
Motor transmission shaft (17) is connected；
When simulating tumble motion, fan (23) is arranged on the end of motor transmission shaft (17) and positioned at the end of electric-controlled fuel injector (9)
End, the rotation axis and motor transmission shaft (17) of fan (23) is coaxial；
The control device includes host computer, bottom PLC and speed probe, and host computer is connected with bottom PLC, under
Position PLC and speed probe, the test system carried by host computer and bottom PLC control modules determine fan (23)
Rotating speed is so as to controlled vortex flow and the intensity of tumble flow.
2. according to claim 1 simulate vortex and the constant volume combustion bomb of tumble motion, it is characterised in that the constant volume
Firebomb main body includes constant volume bullet body (1) and is installed on the electric boiling plate (6) of constant volume bullet body (1) bottom outside, described
Constant volume bullet body (1) is hollow cylindrical, the side wall of constant volume bullet body (1) along the circumferential direction uniform four detachable observation windows
(4), the upper end of constant volume bullet body (1) is provided with cover plate (3), and detachably, cover plate (3) is provided with electric-controlled fuel injector to the cover plate (3)
(9), pressure sensor (14) and temperature sensor (15), the side wall top of constant volume bullet body (1) are measured provided with hot-wire anemometer
Mouth (26), the pressure sensor (14) and temperature sensor (15) are connected with bottom PLC, and the next PLC passes through pressure sensor
And the pressure and temperature in temperature sensor (15) monitoring constant volume bullet body (1) (14).
3. according to claim 1 simulate vortex and the constant volume combustion bomb of tumble motion, it is characterised in that the cover plate
(3) safety valve installing port (8), air inlet (10) and exhaust outlet (7) are additionally provided with, the constant volume combustion bomb main body also includes explosion-proof
Security system, the anti-explosion safety system includes safety valve, discharge duct and air exhauster, and the safety valve is pacified installed in safety valve
Fill on mouth (8), one end of the discharge duct is connected with air exhauster, and the other end is connected with exhaust outlet (7).
4. according to claim 1 simulate vortex and the constant volume combustion bomb of tumble motion, it is characterised in that the constant volume
Firebomb main body also includes fuel valve cooling system, and it is cold that the fuel valve cooling system includes blower fan, cooling line and fuel injector
But chamber (11), the fuel injector cooling chamber (11) is arranged on the center of cover plate (3), and electric-controlled fuel injector (9) is cooled down located at fuel injector
In chamber (11), lead to cold air in fuel injector cooling chamber (11), fuel injector cooling chamber (11) is by pipeline by cooling chamber exhaust outlet
(12) it is connected with the air inlet (10) of constant volume combustion bomb body.
5. according to claim 2 simulate vortex and the constant volume combustion bomb of tumble motion, it is characterised in that the motor
Power transmission shaft (17) is passed through by transition apparatus (18) determines detachable observation window (4), and the transition apparatus (18) can including being fixed on
The packing material between the steel pipe and steel pipe and motor transmission shaft (17) on observation window (4) is dismantled, the packing material passes through cone
Shape pressing plate for sealing lid (22) is pressed between steel pipe and motor transmission shaft (17).
6. according to claim 5 simulate vortex and the constant volume combustion bomb of tumble motion, it is characterised in that the filling
Material uses Wear-resistant, high-temperature resistant elastic filling material.
7. according to claim 5 simulate vortex and the constant volume combustion bomb of tumble motion, it is characterised in that the taper
Compress closure (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 closure (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 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107271188A true CN107271188A (en) | 2017-10-20 |
| CN107271188B CN107271188B (en) | 2019-05-31 |
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ID=60065467
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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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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112177826A (en) * | 2020-09-30 | 2021-01-05 | 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 |
| CN113405802A (en) * | 2021-08-19 | 2021-09-17 | 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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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112177826A (en) * | 2020-09-30 | 2021-01-05 | 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 |
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| CN115524125A (en) * | 2022-07-27 | 2022-12-27 | 江苏大学 | Cross wind spraying test system and test method |
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| Publication number | Publication date |
|---|---|
| CN107271188B (en) | 2019-05-31 |
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