CN207318100U - The optical engine visualization system of simulation activity control compression ignition - Google Patents
The optical engine visualization system of simulation activity control compression ignition Download PDFInfo
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- CN207318100U CN207318100U CN201721445121.2U CN201721445121U CN207318100U CN 207318100 U CN207318100 U CN 207318100U CN 201721445121 U CN201721445121 U CN 201721445121U CN 207318100 U CN207318100 U CN 207318100U
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Abstract
The utility model discloses a kind of optical engine visualization system for simulating activity control compression ignition, for simulating mixed Daqu, combustion characteristics and emission performance research in activity control compression-ignition engine cylinder, including visualization optical engine, low activity fuel feed oil circuit, high activity fuel oil feeding line, valve control oil circuit, air inlet controlling brancher and control system.The utility model can flexibly build the primary condition of gaseous mixture and the layering of gaseous mixture in the active cylinder controlled under compression ignition combustion pattern, and can record mixture formation process, combustion process and the combustion characteristics and emission performance of corresponding operating mode at the same time；Influencing Mechanism of the different technologies means with control strategy to activity control compression ignition can be studied, is conducive to technological means and control strategy that more efficient searching is adapted to for activity control compression ignition to be extended to full working scope；Rotating speed and steering by varying electric booster, can flexibly realize the increase and reduction of admission pressure amplitude.
Description
Technical field
It the utility model is related to a kind of optical engine experimental system visualizing, and in particular to simulate activity control to one kind
The optical engine visualization system of compression ignition.
Background technology
Continuous with environment deteriorates, and countries in the world Abgasgesetz is increasingly harsh.On the other hand, the diesel engine of substantial amounts
A large amount of non-renewable fossil energies are consumed, cause energy crisis.How cleaning, efficient, controllable diesel combustion are built
Mode, to improve environmental pollution and problem of energy crisis, becomes current internal combustion engine and the research hotspot for educational circles of burning.Pass through contrast
After the different low temperature combustion modes such as homogeneity compression-ignition, Premixed combustion, double fuel Premixed combustion, researcher proposes a kind of new
Diesel combustion mode --- activity control compression ignition, it has been found that NO can be achieved at the same timeXMinimum discharge with PM with almost
The 60% superelevation thermal efficiency, is the cleaning, is efficient of a kind of great potential, controllable diesel combustion mode.
With deepening continuously for research, scholars have found, the ignition time delay and combustion heat release rate of activity control compression ignition
Mainly the activity layering present in gaseous mixture is together decided on equivalent proportion layering.Layering deficiency or layering excessively can all cause
High combustion heat release speed, makes NOXBeing discharged with PM increases.
Due to engine chamber be closing it is sightless, for research real engine in gaseous mixture formation with it is burned
Journey, visualization system come into being.Scholars carried out on optical engine Injection strategy to mixed Daqu with it is burned
The research that journey influences.However, scholars have found, only optimize charge stratification by adjusting Injection strategy, though it can realize Smaller load
Lower cleaning, efficient, controllable activity control compression ignition, but to it is middle and high, expand at full capacity when occur that the rate of pressure rise is excessive, PM
With NOXDischarge the problem of exceeded.Activity control compression ignition faces a severe test in terms of load expansion.
Utility model content
The utility model provides a kind of optical engine visualization system for simulating activity control compression ignition, with reference to different skills
Art means and control strategy, adjust the total temperature of gaseous mixture in cylinder, stagnation pressure, total yield than, fuel oil gross activity and point of gaseous mixture
Layer, and the forming process of gaseous mixture and combustion characteristics and emission performance under corresponding operating mode are recorded at the same time, for simulating activity
Control mixed Daqu in compression-ignition engine cylinder, combustion characteristics and emission performance research.
In order to solve the above technical problems, technical solution is used by the utility model：
A kind of optical engine visualization system for simulating activity control compression ignition, including visualization optical engine, low work
Property fuel feed oil circuit, high activity fuel oil feeding line, valve control oil circuit, air inlet controlling brancher and control system；
The surrounding of the visualization optical engine cylinder is quartz glass laser illumination window, and bottom regards for quartz glass
Window, the lower section of quartz glass window are equipped with speculum, and high-speed camera can be by reflecting sem observation and recording the burning in cylinder
Process；Cylinder pressure sensor is additionally provided with cylinder；Visualize optical engine inlet manifold be equipped with air inlet pressure sensor and
Intake air temperature sensor；The exhaust valve of visualization optical engine is connected to exhaust main, and exhaust main is equipped with exhaust gas turbine,
Exhaust main between exhaust gas turbine and exhaust valve is equipped with back pressure transducer and exhaust gas temperature sensor, exhaust gas turbine with
Exhaust main between exhaust outlet is equipped with particulate matter analyzer and gas emission analyzer；
The valve control oil circuit includes sequentially connected sump, oil filter, lubricating oil pump, pressure regulator valve and two three
Three-way electromagnetic valve, two-bit triplet solenoid valve are also connected with the hydraulic continuous changeable air valve on visualization optical engine at the same time, hydraulic pressure
Continuous variable valve is connected to the valve seating of visualization optical engine；
The air inlet controlling brancher includes sequentially connected air flow meter, electric booster, exhaust gas turbocharge
Device and air intake intercooler, air intake intercooler are also connected to the inlet manifold of visualization optical engine at the same time；
The control system at the same time with high-speed camera, two-bit triplet solenoid valve, electric booster, low activity fuel feed
The fuel injector connection of the fuel injector and high activity fuel oil feeding line of oil circuit.
According to such scheme, the low activity fuel feed oil circuit includes sequentially connected low activity fuel oil box, low work
Property fuel feed oil pump, low activity fuel filter and low activity fuel common-rail, low activity fuel common-rail and low activity fuel oil oil
Pressure-regulating valve is also associated between case；Low activity fuel common-rail is also connected with low activity fuel oil PFI fuel injectors at the same time, low activity
The oil outlet of fuel oil PFI fuel injectors is connected to the inlet manifold of visualization optical engine, and low activity fuel oil PFI fuel injectors are at the same time
Also it is connected with control system.
According to such scheme, it is living that the high activity fuel oil feeding line includes sequentially connected high activity fuel tank, height
Property fuel fuel consumption meter, high activity fuel filter, high-pressure oil pump and high-pressure common rail, between high-pressure common rail and high activity fuel tank
It is also associated with pressure maintaining valve；High-pressure common rail also connects with the high activity fuel in-cylinder direct-jet fuel injector on visualization optical engine at the same time
Connect, the oil outlet of high activity fuel in-cylinder direct-jet fuel injector is stretched into the cylinder of visualization optical engine, high activity fuel tank
Interior direct-injection fuel injector is also connected with control system at the same time.
Compared with prior art, the beneficial effects of the utility model are：Activity control compression ignition combustion pattern can flexibly be built
Under cylinder in the primary condition of gaseous mixture and the layering of gaseous mixture, and the mixed Daqu mistake of corresponding operating mode can be recorded at the same time
Journey, combustion process and combustion characteristics and emission performance；Different technologies means can be studied compression ignition is controlled to activity with control strategy
Influencing Mechanism, be conducive to technological means and control plan that more efficient searching is adapted to for activity control compression ignition to be extended to full working scope
Slightly；Rotating speed and steering by varying electric booster, can flexibly realize the increase and reduction of admission pressure amplitude.
Brief description of the drawings
Fig. 1 is the overall structure of the optical engine visualization system of simulation activity control compression ignition described in the utility model
Schematic diagram；
Fig. 2 is the control sum number of the optical engine visualization system of simulation activity control compression ignition described in the utility model
According to collecting flowchart schematic diagram.
Embodiment
Specific embodiment of the present utility model is described further below in conjunction with the accompanying drawings, the paraphrase of each label in figure
For：1- speculums, 2- quartz glass windows, 3- cylinder pressure sensors, 4- exhaust valves, 5- quartz glass laser illumination windows, 6- is at a high speed
Camera, 7- gas emission analyzers, 8- particulate matter analyzers, 9- exhaust gas turbines, 10- high-pressure oil pumps, 11- high activity fuel filters
Clear device, 12- high activity fuel fuel consumption meters, 13- high activity fuel tanks, 14- exhaust gas temperature sensors, 15- pressures at expulsion sensing
Device, 16- pressure maintaining valves, 17- high-pressure common rails, 18- host computers, 19-ECU Multi-functional controllers, the spray of 20- high activity fuel in-cylinder direct-jet
Oily device, 21- hydraulic continuous changeable air valves, 22- low activity fuel oil PFI fuel injectors, 23- low activity fuel common-rails, 24- pressure are adjusted
Valve, 25- low activity fuel filters, 26- low activities fuel feed pump, 27- low activity fuel oil boxes, 28- admission pressures sensing
Device, 29- intake air temperature sensor, 30- air intake intercoolers, 31- exhaust-driven turbo-charger exhaust-gas turbo chargers, 32- electric boosters, 33- air matter
Measure flowmeter, 34- two-bit triplet solenoid valves, 35- pressure regulator valves, 36- lubricating oil pump, 37- oil filter, 38- sumps, 39- into
Gas manifold, 40- exhaust main.
The optical engine visualization system of simulation activity control compression ignition mainly includes visualization optical engine, low activity
Fuel feed oil circuit, high activity fuel oil feeding line, valve control oil circuit, air inlet controlling brancher and control system.
The surrounding of the visualization optical engine cylinder is quartz glass laser illumination window 5, and bottom regards for quartz glass
Window 2, the lower section of quartz glass window 2 are equipped with speculum 1, and high-speed camera 6 can be observed by speculum 1 and recorded in cylinder
Combustion process.Cylinder pressure sensor 3 is additionally provided with cylinder, for the piezometry to mixer in cylinder.Visualization optics starts
The inlet manifold 39 of machine is equipped with air inlet pressure sensor 28 and intake air temperature sensor 29.Visualize the exhaust of optical engine
Door 4 is connected to exhaust main 40, and exhaust main 40 is equipped with exhaust gas turbine 9, and the exhaust between exhaust gas turbine 9 and exhaust valve 4 is total
Pipe 40 is equipped with back pressure transducer 15 and exhaust gas temperature sensor 14, the exhaust main between exhaust gas turbine 9 and exhaust outlet
40 are equipped with Cambustion particulate matters analyzer 8 and Horiba gases emission analyzer 7.
The low activity fuel feed oil circuit includes sequentially connected low activity fuel oil box 27, low activity fuel feed oil
Pump 26, low activity fuel filter 25 and low activity fuel common-rail 23, low activity fuel common-rail 23 and low activity fuel oil box 27
Between be also associated with pressure-regulating valve 24.Low activity fuel common-rail 23 at the same time also with low activity fuel oil PFI (Port Fuel
Injection tuned port injection) fuel injector 22 connects, and the oil outlet of low activity fuel oil PFI fuel injectors 22 is connected to visualization light
Learn the inlet manifold 39 of engine.
The high activity fuel oil feeding line includes sequentially connected high activity fuel tank 13, high activity fuel fuel consumption meter
12nd, high activity fuel filter 11, high-pressure oil pump 10 and high-pressure common rail 17, between high-pressure common rail 17 and high activity fuel tank 13
It is also associated with pressure maintaining valve 16.High-pressure common rail 17 is at the same time also with visualizing the high activity fuel in-cylinder direct-jet oil spout on optical engine
Device 20 connects, and the oil outlet of high activity fuel in-cylinder direct-jet fuel injector 20 is stretched into the cylinder of visualization optical engine.
The valve control oil circuit includes sequentially connected sump 38, oil filter 37, lubricating oil pump 36, pressure regulator valve 35
With two-bit triplet solenoid valve 34, two-bit triplet solenoid valve 34 is at the same time also with visualizing the variable gas of hydraulic continuous on optical engine
Door 21 connects, and hydraulic continuous changeable air valve 21 is connected to the valve seating of visualization optical engine.
The air inlet controlling brancher includes sequentially connected air flow meter 33, electric booster 32, exhaust gas turbine
Booster 31 and air intake intercooler 30, air intake intercooler 30 are also connected to the inlet manifold 39 of visualization optical engine at the same time.
The control system includes host computer 18 and ECU (Electronic Control Unit, electronic control unit) is more
Function control instrument 19, ECU Multi-functional controllers 19 at the same time with high-speed camera 6, two-bit triplet solenoid valve 34, electric booster
32nd, low activity fuel oil PFI fuel injectors 22 and high activity fuel in-cylinder direct-jet fuel injector 20 connect.Host computer 18 is used for whole
System provides the input of operational order, and ECU Multi-functional controllers 19 control low activity fuel oil after receiving the instruction of host computer 18
The injection pulse width and injection phase, two-bit triplet solenoid valve 34 of PFI fuel injectors 22 and high activity fuel in-cylinder direct-jet fuel injector 20
Fuel feeding pulsewidth and fuel feeding phase, the rotating speed of electric booster 32 and steering and high-speed camera 6 take pictures.
Simulation activity controls the analogy method of optical engine visualization system of compression ignition to be：
Trigger signal is inputted from host computer 18, ECU Multi-functional controllers 19 receive the signal post-processing signal, pass through
Thus the first drive circuit control frequency converter in it changes inlet manifold so as to change rotating speed and the steering of electric booster 32
The pressure and flow of air in 39；
ECU Multi-functional controllers 19 control the spray of low activity fuel oil PFI fuel injectors 22 by the second drive circuit in it
Penetrate the duration, change the replacement ratio of low activity fuel, the homogeneous charge of low activity fuel is formed in inlet manifold 39；
ECU Multi-functional controllers 19 control high activity fuel in-cylinder direct-jet fuel injector 20 by the 3rd drive circuit in it
Injection timing, injecting times and injection duration, so as to control the replacement ratio of high activity fuel in cylinder, change in cylinder and mix
The fuel oil gross activity of gas is closed, realizes activity layering, equivalent proportion layering and thermal stratification；
ECU Multi-functional controllers 19 control the fuel feeding pulsewidth of two-bit triplet solenoid valve 34 by the 4th drive circuit in it
With fuel feeding phase, so as to change fuel feeding timing and the fuel feeding pulsewidth of hydraulic continuous changeable air valve 21, change the variable gas of hydraulic continuous
The evening of door 21 closes angle, total temperature, stagnation pressure, the total yield ratio of stratified mixtures in cylinder is controlled, finally in the visualization optics
Total temperature, stagnation pressure, the total yield stratified mixtures more variable than, fuel oil gross activity are formed in the cylinder of engine；
ECU Multi-functional controllers 19 control high-speed camera 6 to start work of taking pictures by the 5th drive circuit in it, clap
Take the photograph image when stratified mixtures burn in cylinder and be transferred on external computer；Cylinder pressure sensor 3 is put by electric charge at the same time
Big device is connected with capture card, is included cylinder pressure on external computer by capture card；Air inlet pressure sensor 28, intake air temperature
Sensor 29, back pressure transducer 15 and exhaust gas temperature sensor 14 are shown the pressure and temperature collected by capture card
Onto external computer；Cambustion particulate matters analyzer 8 to external computer and records granular material discharged data transfer；
Gas emissions data is transferred to external computer and recorded by Horiba gases emission analyzer 7.
The utility model can not only study influence of the Injection strategy to charge stratification, can also utilize different technologies hand
Section and control strategy, realize that the total temperature of gaseous mixture in cylinder, stagnation pressure, total yield ratio, fuel oil gross activity and charge stratification are (living
Property, equivalent proportion and thermal stratification) it is flexible adjustable, to study different technologies means with control strategy to mixed Daqu mistake
Journey, charge stratification are further found to activity control compression ignition combustion process and the influence of discharge and are adapted to activity controlling compression ignition
It is extended to the technological means and control strategy of full working scope.
Claims (3)
- A kind of 1. optical engine visualization system for simulating activity control compression ignition, it is characterised in that：Including visualization optics hair Motivation, low activity fuel feed oil circuit, high activity fuel oil feeding line, valve control oil circuit, air inlet controlling brancher and control system System；The surrounding of the visualization optical engine cylinder is quartz glass laser illumination window (5), and bottom is quartz glass window (2), the lower section of quartz glass window (2) is equipped with speculum (1), and high-speed camera (6) can be observed and recorded by speculum (1) Combustion process in cylinder；Cylinder pressure sensor (3) is additionally provided with cylinder；Visualize and set on the inlet manifold (39) of optical engine There are air inlet pressure sensor (28) and intake air temperature sensor (29)；Visualize exhaust valve (4) row of being connected to of optical engine Gas manifold (40), exhaust main (40) are equipped with exhaust gas turbine (9), the exhaust main between exhaust gas turbine (9) and exhaust valve (4) (40) back pressure transducer (15) and exhaust gas temperature sensor (14), row of the exhaust gas turbine (9) between exhaust outlet are equipped with Gas manifold (40) is equipped with particulate matter analyzer (8) and gas emission analyzer (7)；The valve control oil circuit includes sequentially connected sump (38), oil filter (37), lubricating oil pump (36), pressure regulator valve (35) and two-bit triplet solenoid valve (34), two-bit triplet solenoid valve (34) while also connect with the hydraulic pressure on visualization optical engine Continuous changeable air valve (21) connection, hydraulic continuous changeable air valve (21) are connected to the valve seating of visualization optical engine；The air inlet controlling brancher includes sequentially connected air flow meter (33), electric booster (32), exhaust gas turbine Booster (31) and air intake intercooler (30), air intake intercooler (30) and meanwhile be also connected to visualization optical engine air inlet it is total Manage (39)；The control system at the same time with high-speed camera (6), two-bit triplet solenoid valve (34), electric booster (32), low activity The fuel injector connection of the fuel injector and high activity fuel oil feeding line of fuel feed oil circuit.
- 2. a kind of optical engine visualization system for simulating activity control compression ignition according to claim 1, its feature exist In：The low activity fuel feed oil circuit includes sequentially connected low activity fuel oil box (27), low activity fuel feed oil pump (26), low activity fuel filter (25) and low activity fuel common-rail (23), low activity fuel common-rail (23) and low activity fuel oil Pressure-regulating valve (24) is also associated between fuel tank (27)；Low activity fuel common-rail (23) at the same also with low activity fuel oil PFI spray Oily device (22) connection, the oil outlet of low activity fuel oil PFI fuel injectors (22) are connected to the inlet manifold of visualization optical engine (39), low activity fuel oil PFI fuel injectors (22) while also it is connected with control system.
- 3. a kind of optical engine visualization system for simulating activity control compression ignition according to claim 1, its feature exist In：The high activity fuel oil feeding line includes sequentially connected high activity fuel tank (13), high activity fuel fuel consumption meter (12), high activity fuel filter (11), high-pressure oil pump (10) and high-pressure common rail (17), high-pressure common rail (17) and high activity fuel Pressure maintaining valve (16) is also associated between fuel tank (13)；High-pressure common rail (17) at the same also with visualization optical engine on high activity Fuel in-cylinder direct-jet fuel injector (20) connects, and the oil outlet of high activity fuel in-cylinder direct-jet fuel injector (20) stretches into visualization optics In the cylinder of engine, high activity fuel in-cylinder direct-jet fuel injector (20) while also it is connected with control system.
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| CN201721445121.2U CN207318100U (en) | 2017-11-02 | 2017-11-02 | The optical engine visualization system of simulation activity control compression ignition |
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| CN201721445121.2U CN207318100U (en) | 2017-11-02 | 2017-11-02 | The optical engine visualization system of simulation activity control compression ignition |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107576507A (en) * | 2017-11-02 | 2018-01-12 | 西华大学 | The optical engine visualization system and its analogy method of simulation activity control compression ignition |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107576507A (en) * | 2017-11-02 | 2018-01-12 | 西华大学 | The optical engine visualization system and its analogy method of simulation activity control compression ignition |
| CN107576507B (en) * | 2017-11-02 | 2024-04-02 | 西华大学 | Optical engine visualization system for simulating active control compression ignition and simulation method thereof |
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