CN200946525Y - High speed small cylinder diameter optical engine device - Google Patents
High speed small cylinder diameter optical engine device Download PDFInfo
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- CN200946525Y CN200946525Y CN 200620027284 CN200620027284U CN200946525Y CN 200946525 Y CN200946525 Y CN 200946525Y CN 200620027284 CN200620027284 CN 200620027284 CN 200620027284 U CN200620027284 U CN 200620027284U CN 200946525 Y CN200946525 Y CN 200946525Y
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Abstract
The utility model relates to automobile or power machinery engine, specifically a high speed small cylinder diameter optical engine device. the utility model provide some engine operating parameters of a turbulent premixed combustion flame fractal structure such as the turbulence intensity, measure, air-fuel ratio, combustion type, speed, load and compression ratio. The technical proposals adopted by the utility model are that as follows: a transparent window designed as biggest as possible so as to observe combustion process of fuel is arranged at the top of an elongated piston; a square hole is arranged lengthways at the lower part of the elongated piston, and a specula is arranged in the square hole; a circle water jacket, which can obtain hot water by means of a heating water tank, is distributed around the upper engine body of the elongated piston; a temperature control switch is arranged in the heating water tank; an angle indicator is arranged on a engine crankshaft, and a pressure sensor which can gathers the real-time pressure is also arranged on the engine. The utility is mainly applied in the production of optical engines.
Description
Technical field
The utility model relates to automobile or dynamic power machine motor, specifically relates to the little cylinder diameter optical engine of high speed device.
Background technique
Premixed combustion is one of main direction of studying of current combustion field, and most of petrol engine all are operated under this combustion mode.In a broad sense, at present the combustion mode of the very active homogeneous charge compression-ignition (HCCI) of combustion in IC engine area research also belongs to this category.The quality of active premixed combustion quality in engineering reality influences its power character, Economy and emission performance.Therefore, the research to this phenomenon has important significance for theories and realistic meaning.
Because Premixed Turbulent Combustion is a very complex phenomena, describe more exactly theoretically flame structure, develop and the process of teaching is the relatively work of difficulty, therefore, overwhelming majority work both at home and abroad is also mainly from the phenomenon angle, on the basis of various turbulence theories, set up experience or semiempirical formula, determine turbulent flame area and velocity of propagation of flame.
What at present, be subjected to generally that everybody approves is the designed visual motor of the inferior National Laboratory in the U.S. Holy Land.This experiment converts with the N series large diesel engine of diesel engine by Cummins company, and its cylinder diameter * stroke is 140 * 152mm, and compression ratio is 10: 1.Motor adopts the lengthened piston structure, is separately installed with optical windshield and corresponding optical mirror on the top of lengthened piston, the gentle cylinder cap in cylinder block side, has so just formed optical path.Incident light is to be shining into from the side in the cylinder, and combustion flame is that the norma basilaris from motor measures.People such as inferior over the ground breadboard John E.Dec adopted and comprised induced with laser incandescent lamp method (Laser Induced Incandescence the beginning of the nineties, LII) and the Mie scattering technology at interior laser imaging and high speed photography, obtained the combustion flame photo in a series of engine cylinders, thereby obtain the relevant information of in-cylinder combustion carbon granules concentration and particle size distribution, for the combustion process in the cylinder of diesel engine that sharpens understanding provides effective laboratory facilities and method.The end of the nineties, this laboratory used an edition shape laser inductive fluorescence method to study NO in the direct injection diesel engine in-cylinder combustion process again
xGeneration.Can cross the various laser image data of Treatment Analysis, John E.Dec proposed the conceptual model of in-cylinder direct injection diesel combustion in 1997.Can carry out various advanced persons' laser testing means on this optical engine, the combustion information in the cylinder that can obtain is many.This mode can obviously be improved the constrained of viewing window, can obtain combustion flame photo more clearly, but installs more complicated, need carry out very big change to former machine.
Another kind of typical visual motor is the employed optical engine of Britain Brunel university, and engine valve and oil sprayer are side-mounted.Side and top at motor are respectively equipped with viewing window, and sheet laser is parallel with horizontal plane to be shining in the cylinder by the motor side window, from top window photographic images.This optical engine is suitable for studying the influence that air motion forms and burns the mixed gas in the cylinder.Equally, this motor structurally needs to do very big change, more complicated.
It is side-mounted to differ from top this valve, and the in-cylinder direct fuel-injection engine of taking pictures from the motor top is arranged, owing to be subjected to oil sprayer, the isostructural influence of valve, the viewing window of arranging on cylinder cap is smaller, and range of observation is narrow.For spark ignition engine, owing to the influence of spark plug, also can only obtain the information in office cloth zone in the cylinder, can only observe the image in the part spark plug zone.
The people such as M.S.Beckman of U.S.'s prestige phase Kang Xing university use this device to do recombination laser induced fluorescence test experiments.This optical testing device is fairly simple, but is difficult to the high temperature and high pressure environment in the simulation engine cylinder.
Though external at present existing how tame university and enterprise have begun fractal technology is used the research of premixed combustion, even this technology has been applied to the tendency of diffusive combustion research, yet because the fractal research of the Premixed Turbulent Combustion of internal-combustion engine still is in the starting stage, many problems are arranged, or even some basic problems are not clear, and academia lacks unified understanding.For example the low side conversion yardstick for the flame fractal structure just has different arguements.For the high-side conversion yardstick, though it is generally acknowledged that adopting the length integral scale is reasonably, there is experimental result to show, and turbulent combustion still shows fractal characteristic when equaling the length dimension twice.People did not also go deep into for the fractal research of Premixed Turbulent Combustion when these were all shown.This mainly is because existing experimental research lacks the various parameters that influence, the particularly comprehensively accurately control and the measurement of field of turbulent flow intensity and yardstick, and lack flame structure in the combustion process of the internal-combustion engine and propagation process, comprise the dynamic test research of its influence factor.These all make people at present internal-combustion engine Premixed Turbulent Combustion fractal structure and fractal law of flame still be lacked careful research and understanding comprehensively with the various Operational Limitss of internal-combustion engine such as the Changing Pattern of turbulence intensity, yardstick, air fuel ratio, burning kind, compression ratio, crank angle, rotating speed and load etc., and have influenced the extensive use of the analysis and research achievement of motor turbulent flow pre-mixing combustion in numerical simulation, burning control and the optimisation technique of premixed combustion engine combustion process thus.
Summary of the invention
For overcoming the deficiencies in the prior art, the purpose of this utility model provides the little cylinder diameter optical engine of a kind of high speed device, so that Premixed Turbulent Combustion flame fractal structure and turbulence intensity thereof to be provided, yardstick, air fuel ratio, burning kind and comprise the speed of a motor vehicle, load, the engine running parameter of compression ratio, by these parameters, can find its interaction rule, and then obtain the realistic Premixed Turbulent Combustion flame combustion area and the computational methods of velocity of propagation of flame, and with the application of result that obtains in the numerical simulation of premixed combustion engine combustion process, in the research of burning control and optimisation technique.
The technical solution adopted in the utility model is, the little cylinder diameter optical engine of a kind of high speed device, be provided with one as far as possible greatly so that observe the transparent window of the combustion process of fuel oil on lengthened piston top, lengthened piston lower axis direction has square hole, and reflector is housed in the hole; Lengthened piston top body arranged around has cyclic water jacket, by heating water chamber, provides hot water to cyclic water jacket, and is provided with the temperature detect switch (TDS) of controlling; Engine crankshaft is provided with the footmark device; Be provided with the pressure transducer of the real-time collection that realizes pressure.
Described motor is the motor that is provided with the electric injection device of the electrospray of realizing fuel oil.
Described lengthened piston adopts the alloy aluminium bar, and the inboard is provided with stiffening rib longitudinally, and the both sides, bottom have the square hole that reflector is installed.
Described transparent window is a quartz window.
Described footmark device is a photoelectric encoder.
The little cylinder diameter optical engine of the high speed that the utility model provides device can bring following effect:
Transparent window, reflector by the utility model is provided with can obtain Premixed Turbulent Combustion flame fractal structure;
Parameter by aforementioned acquisition, can find its interaction rule, and then obtain the realistic Premixed Turbulent Combustion flame combustion area and the computational methods of velocity of propagation of flame, and with the application of result that obtains in the numerical simulation of premixed combustion engine combustion process, in the research of burning control and optimisation technique.
Description of drawings
Fig. 1 is a lengthened piston transparent window schematic representation, among the figure, and the 101st, quartz window, the 102nd, lengthened piston.
Fig. 2 cyclic water jacket and light path part partial schematic diagram, among the figure, the 201st, cyclic water jacket, the 202nd, reflector square hole.
Fig. 3 is the utility model overall structure figure, among the figure, and the 301st, separated type cylinder body, the 302nd, former piston.
Fig. 4 is the utility model overall applicability structured flowchart, among the figure, and the 1st, fuel tank, the 2nd, add reservoir, the 3rd, coupling, the 4th, power measurer, the 5th, photoelectric encoder, the 6th, temperature transducer, the 7th, in-cylinder pressure sensor, the 8th, high-speed camera, the 9th, ANALYZER, the 10th, computer, the 11st, computer display, the 12nd, power switch, the 13rd, Dynamometer Control System, the 14th, Industrial Control Computer, the 15th, host-initiated switch, the 16th, main frame stop switch, the 17th, host reset switch, the 18th, the switch of taking pictures, the 19th, ECU (Electrical Control Unit).
Embodiment
With reference to the accompanying drawings and embodiment, further specify the utility model.
Lengthened piston:
Be provided with cyclic water jacket 201, plane mirror:
For solving because compression ratio is little, be not easy to catch fire, especially winter, incomplete combustion can pollute silica glass again, helps the engine combustion greenhouse heating so cyclic water jacket 201 is set, and it can be started fast.The cyclic water jacket 201 that is provided with on lengthening section cylinder body top, by heating water chamber 2, hot water is provided, and be provided with the temperature detect switch (TDS) of controlling, the opening that reflector is installed has been offered in its underpart, this reflector is a planar mirror, tiltedly puts the bottom that is installed on lengthened piston 102 and lengthening cylinder body with 45.Planar mirror is general eyeglass, be consider used several times after, must the wiping greasy dirt.Though the aluminizer holophote can strengthen the reflectivity to the use laser beam, not anti-wiping, cut is serious, can influence actual effect on the contrary.
Be adapted as electronic fuel injection engine:
Because lengthened piston has been installed quartz window 101 on 102 tops, be subjected to pressure of explosion effect damage for a long time and gas pollution makes the measurement distortion for guaranteeing that silica glass is unlikely, need control the number of times and the oil spout moment of engine operational cycle during application, generally be controlled within several work cycle, can adopt the motor of charged spray apparatus, in the present embodiment, be outside equipped with ECU (Electrical Control Unit) 19, designed fuel oil single injection event control program in the ECU (Electrical Control Unit) 19 at motor.
With the footmark signal is time signal:
In combustion process dynamic and visual device, signal synchronization control is vital.Because the system of only accomplishing regularly starts and closes, High Speed Photography and other tracer signal (as the footmark signal) are synchronous, could other parameter of take a picture and combustion process is corresponding, otherwise can't carry out combustion process research.
This testing apparatus adopts photoelectric encoder 5 as the footmark device, considers the engine structure factor, and photoelectric encoder 5 directly is connected on the power measurer, is equivalent to fixedly connected with bent axle.When photoelectric encoder 5 rotates with I. C. engine crankshaft, receiving system is sensed the optical signal pulses that the coding scale produces on the photoelectric encoder coding reel, by photoelectric conversion axle angle of rotation displacement conversion is become electrical pulsing signal, become the TTL square-wave pulse by relatively amplifying at last with the power drive cable, data acquisition unit in view of the above signal in the rising edge of square wave or trailing edge or rise and fall along triggering, finish data capture.
The utility model optimum is applied to little cylinder diameter, (75mm, 3000 change) at a high speed, the occasion of single cylinder engine.
Claims (5)
1. the little cylinder diameter optical engine of high speed device, be provided with one as far as possible greatly so that observe the transparent window of the combustion process of fuel oil on lengthened piston top, lengthening body and lengthened piston lower axis direction have a square hole, reflector is housed in the hole, it is characterized in that lengthened piston top body arranged around has water channel, passes through heating water chamber, hot water is provided, and is provided with the temperature detect switch (TDS) of controlling; Engine crankshaft is provided with the footmark device; Be provided with the pressure transducer of the real-time collection that realizes pressure.
2. the little cylinder diameter optical engine of a kind of high speed according to claim 1 device is characterized in that, the elongated portion of described lengthened piston adopts the alloy aluminium bar, and the inboard is provided with stiffening rib longitudinally, and the both sides, bottom have the square opening that reflector is installed.
3. the little cylinder diameter optical engine of a kind of high speed according to claim 1 device is characterized in that, motor is the motor that is provided with the electric injection device of the electrospray of realizing fuel oil.
4. the little cylinder diameter optical engine of a kind of high speed according to claim 1 device is characterized in that described transparent window is a quartz window.
5. the little cylinder diameter optical engine of a kind of high speed according to claim 1 is characterized in that described footmark device is a photoelectric encoder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620027284 CN200946525Y (en) | 2006-09-11 | 2006-09-11 | High speed small cylinder diameter optical engine device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620027284 CN200946525Y (en) | 2006-09-11 | 2006-09-11 | High speed small cylinder diameter optical engine device |
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| Publication Number | Publication Date |
|---|---|
| CN200946525Y true CN200946525Y (en) | 2007-09-12 |
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| CN 200620027284 Expired - Fee Related CN200946525Y (en) | 2006-09-11 | 2006-09-11 | High speed small cylinder diameter optical engine device |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101846008A (en) * | 2010-04-07 | 2010-09-29 | 吉林大学 | Optical generator |
| CN103291484A (en) * | 2013-06-21 | 2013-09-11 | 奇瑞汽车股份有限公司 | Cylinder cover assembly of optical engine and connecting method thereof |
| CN103541813A (en) * | 2013-11-15 | 2014-01-29 | 吉林大学 | Visual direct-injection gasoline engine |
| CN105547708A (en) * | 2016-01-29 | 2016-05-04 | 天津大学 | Reflector assembly for optical engine laser test image acquisition |
| WO2021031606A1 (en) * | 2019-08-22 | 2021-02-25 | 江苏大学 | Apparatus and method for jointly measuring soot precursor and soot on basis of optical engine |
-
2006
- 2006-09-11 CN CN 200620027284 patent/CN200946525Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101846008A (en) * | 2010-04-07 | 2010-09-29 | 吉林大学 | Optical generator |
| CN103291484A (en) * | 2013-06-21 | 2013-09-11 | 奇瑞汽车股份有限公司 | Cylinder cover assembly of optical engine and connecting method thereof |
| CN103291484B (en) * | 2013-06-21 | 2015-04-29 | 奇瑞汽车股份有限公司 | Cylinder cover assembly of optical engine and connecting method thereof |
| CN103541813A (en) * | 2013-11-15 | 2014-01-29 | 吉林大学 | Visual direct-injection gasoline engine |
| CN103541813B (en) * | 2013-11-15 | 2016-03-02 | 吉林大学 | A kind of visual direct-injection gasoline engine |
| CN105547708A (en) * | 2016-01-29 | 2016-05-04 | 天津大学 | Reflector assembly for optical engine laser test image acquisition |
| WO2021031606A1 (en) * | 2019-08-22 | 2021-02-25 | 江苏大学 | Apparatus and method for jointly measuring soot precursor and soot on basis of optical engine |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |