CN103244330A - Novel fuel spray visual experiment device - Google Patents
Novel fuel spray visual experiment device Download PDFInfo
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- CN103244330A CN103244330A CN201310183178XA CN201310183178A CN103244330A CN 103244330 A CN103244330 A CN 103244330A CN 201310183178X A CN201310183178X A CN 201310183178XA CN 201310183178 A CN201310183178 A CN 201310183178A CN 103244330 A CN103244330 A CN 103244330A
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Abstract
The invention provides a multi-purpose engine fuel spray visual experiment device which mainly comprises an elastic body, window cover plate groups, a fuel injector position regulating and fixing module and a simulation combustion chamber unit position regulation module. The fuel injector position regulating and fixing module can regulate the position of a fuel injector in a window accurately, guarantees that a visual range can be used fully when fuel injectors of various types are used, and improves usability of the device. The simulation combustion chamber unit position regulation module can research collision information of fuel spray and the wall surface of a combustion chamber and movement condition of the fuel spray in a fuel spray combustion chamber, enables the research to approximate practical working conditions of an engine, and improves reliability of research data. The window cover plate groups can be exchanged with each other and can be exchanged with the fuel injector position regulating and fixing module and the simulation combustion chamber unit position regulation module, so that experiments can be performed in a plurality of directions, and generality of the device is improved.
Description
Technical field
The invention provides a kind of multiduty engine fuel visual experimental setup of spraying, the present invention is particularly useful for the visualized experiment research of the various Sprayables of liquid and gaseous fuel.
Background technique
The fuel-oil atmozation process all has the significant effects effect for burning and the emission performance of diesel engine, and researchs such as the mixing of diesel engine oil gas, mechanism of combustion and low emissions combustion mode are all had important supporting effect.In order to study the diesel engine spray process intuitively, obtain oil gas mixed information in the cylinder, the researcher often adopts the visual research means of spraying.
The visual two kinds of investigative technique routes that mainly are divided into of spraying, a kind of is to adopt optical engine, namely processes visual light path at test engine.Adopt this mode can obtain spraying situation under the motor real work parameter condition, but its system complex involves great expense, and visual range often is subjected to all restrictions.Another kind of mode is to adopt the constant volume bullet, i.e. the temperature and pressure condition during the simulated engine oil spout in the pressurized container of a fixed volume, and carry out visualization measurement in directions such as the wall of container or bottoms.Compare with the optical engine mode, adopt the cost of constant volume bullet mode low, visual range is big, is suitable for multiple spraying and combustion manner, has very big flexibility.
The diesel engine fuel jetting technology develops towards the high injection pressure direction, and spray process often is accompanied by the collision of oil bundle and combustion chamber wall surface.Different collision modes is widely different for the influence of oil gas mixed process, combustion process and motor overall performance.But in present research, can only obtain the spraying information of free spray mostly based on the spraying visual research of constant volume bullet, can't carry out the experimental research of multiple collision mode, versatility is relatively poor.
Summary of the invention
Defective in view of the prior art existence, the objective of the invention is to provide a kind of novel versatile engine fuel spray visual experimental apparatus, this device adopts modular design, have independently oil sprayer module and collision cell module, can regulate the position of oil sprayer in form easily, change the collision distance between nozzle and collision cell, and be applicable to the experiment needs of condition transformations such as various collision modes, injection pressure and environment back pressure.
To achieve these goals, technological scheme of the present invention is:
Novel fuel spraying visual experimental apparatus mainly comprises body, form cover plate group, oil sprayer position regulation and stuck-module and simulated combustion chamber unit position adjusting type modules:
Described body is for having certain thickness regular cube cavity structure, is provided with in order to the circular mounting groove of form cover plate group, oil sprayer position regulation and stuck-module and simulated combustion chamber unit position adjusting type modules to be installed at each face of body;
Described form cover plate group comprises in the circular mounting groove of four sides that are installed in body, and body adopts the form cover plate of mechanical connection and is installed in plexiglass form in the space between form cover plate and the body;
Described oil sprayer position regulation and stuck-module, also fixing in order to the position of adjusting oil sprayer, comprise in the circular mounting groove that is installed in the body upper surface, adopt the centre of mechanical connection to have in order to lay the oil sprayer upper cover plate of oil sprayer sleeve through hole with body, with centre that the oil sprayer cover plate is threaded have the aperture match with the oil sprayer external diameter through hole in order to the oil sprayer sleeve of oil sprayer to be installed, the injector plate that is installed on the oil sprayer in the oil sprayer sleeve and is used for compressing oil sprayer;
Described simulated combustion chamber unit position adjusting type modules, in order to adjust the position of simulated combustion chamber unit, comprise the simulated combustion chamber, be installed in the circular mounting groove of body lower surface, lower cover plate with body employing mechanical connection, arrange one in the middle of the described lower cover plate in order to the through hole of the simulated combustion chamber position adjusting mechanism that is threaded and in order to adjust position, simulated combustion chamber and to guarantee that the simulated combustion chamber keeps vertical simulated combustion chamber position adjusting mechanism with the form direction all the time, also be equipped with on the described lower cover plate in order to the suction valve of regulating back pressure in the body and in order to the outlet valve of the fuel oil getting rid of the high pressure nitrogen in the body and gather.
Further, the processing dimension unanimity of described circular mounting groove, in order to realize between the form cover plate group, form cover plate group and oil sprayer position regulation and stuck-module and simulated combustion chamber unit position adjusting type modules exchange.
Further, the through hole of described oil sprayer upper cover plate comprises: be processed with screw thread in the aperture, be used for processing in the last through hole of fixing fuel injector sleeve and the aperture twice annular groove in order to the lower through-hole of seal ring to be installed, described on through-hole aperture greater than the lower through-hole aperture.
Further, described oil sprayer sleeve is made up of three parts, and first portion is the injector plate fixing rod, and described injector plate fixing rod is positioned injector plate on the oil sprayer sleeve, and then realizes that oil sprayer compresses; Second portion is the oil sprayer upper cartridge, and its external diameter is processed with screw thread, is threaded with the oil sprayer upper cover plate; Third part is the oil sprayer lower cartridge, and its external diameter is processed with in order to adjust the location grid chi of the relative position of oil sprayer in form.
Further, described injector plate is a square plate.
Further, described injector plate fixing rod is two lag bolts.
Further, described simulated combustion chamber position adjusting mechanism comprises: the surface Machining screw thread is installed on the positioning rod in the lower cover plate through hole and two groups of locating stud tubes that are installed on the lower cover plate upper surface; Described positioning rod upper end and simulated combustion chamber mechanical connection, lower end are provided with a location handwheel; In the described locating stud tube locating stud is set, locating stud upper end and simulated combustion chamber mechanical connection.
Described simulated combustion chamber is the two-dimentional firing chamber with burning chamber of diesel engine sectional shape, and its lower end is connected respectively at locating stud and positioning rod.
Between described body and the plexiglass form, between body and the form cover plate group, between body and the oil sprayer upper cover plate, between body and the lower cover plate, between oil sprayer upper cover plate and the oil sprayer sleeve, between lower cover plate and the positioning rod, between oil sprayer and the oil sprayer sleeve seal ring is installed all.
The invention has the advantages that:
Oil sprayer position regulation provided by the present invention and stuck-module can be regulated the position of oil sprayer in form accurately, thereby guarantee can utilize visual range fully when using the variety classes oil sprayer, have improved the usability of device.
Simulated combustion chamber unit position adjusting type modules provided by the present invention, can adopt different types of simulated combustion chamber, thereby realized cooperating of spraying and combustion-chamber geometry, can study spraying reaches in the indoor motion conditions of spray burning with the information that combustion chamber wall surface bumps, make research more near the real work situation of motor, improved the confidence level of data.
Can exchange between the form cover plate group provided by the present invention, and can exchange mutually with oil sprayer position regulation and stuck-module and simulated combustion chamber unit position adjusting type modules, make experiment to carry out in a plurality of directions, improve the versatility of device.
Description of drawings
Fig. 1 fuel spray visual experimental apparatus of the present invention structural drawing;
Fig. 2 fuel spray visual experimental apparatus of the present invention sectional drawing;
Fig. 3 fuel spray visual experimental apparatus of the present invention upper cover plate sectional drawing;
Fig. 4 fuel spray visual experimental apparatus of the present invention upper cover plate plan view;
Fig. 5 simulated combustion of the present invention chamber schematic representation;
Fig. 6 seal ring position view of the present invention;
Fig. 7 seal ring position view of the present invention.
Among the figure: 1, body, 2, form cover plate group, 2a, the form cover plate, 2b, the plexiglass form, 3, oil sprayer position regulation and stuck-module, 3a, injector plate, 3b, oil sprayer, 3c, the oil sprayer sleeve, 3c1, the injector plate fixing rod, 3c2, the oil sprayer upper cartridge, 3c3, the oil sprayer lower cartridge, 3c4, location grid chi, 3d, the oil sprayer upper cover plate, 4, simulated combustion chamber unit position adjusting type modules, 4a, simulated combustion chamber position adjusting mechanism, 4a1, positioning rod, 4a2, the locating stud tube, 4a3, locating stud, 4a4, the location handwheel, 4b, lower cover plate, 4c, suction valve, 4d, outlet valve, 4e, the simulated combustion chamber, M, seal ring.
Embodiment
Further specify technological scheme of the present invention below in conjunction with each accompanying drawing:
A kind of novel fuel spraying visual experimental apparatus provided by the invention as shown in Figure 1, mainly comprises: body 1, form cover plate group 2, oil sprayer position regulation and stuck-module 3, simulated combustion chamber unit position adjusting type modules 4.
Figure 2 shows that the sectional drawing of spraying visual experimental apparatus, described body 1 is for having certain thickness regular cube cavity structure, each side all have a circular mounting groove, each mounting groove is all fixed a plexiglass form 2b by form cover plate group 2, and opening is sealed; Described oil sprayer upper cover plate 3d and lower cover plate 4b are installed on respectively in the circular mounting groove on two surfaces up and down of body 1; Described oil sprayer 5 is installed in the oil sprayer sleeve 3c, simulated combustion chamber 4e selects to have the two-dimentional firing chamber (namely processing an equiform geometrical construction with the burning chamber of diesel engine middle section at a cuboid bloom) of burning chamber of diesel engine cross-sectional geometry, the lower end of simulated combustion chamber 4e is connected with locating stud 4a3 and the positioning rod 4a1 of simulated combustion chamber position adjusting mechanism 4a respectively, locating stud 4a3 is installed in the locating stud sleeve 4a2, locating stud sleeve 4a2, positioning rod 4a1 all is installed on the lower cover plate 4b, location handwheel 4a4 is installed on positioning rod 4a1 lower end, and suction valve 4c and outlet valve 4d are installed on the lower cover plate 4b.
Concrete, the circular mounting groove in order to form cover plate group 2, oil sprayer position regulation and stuck-module 3 and simulated combustion chamber unit position adjusting type modules 4 to be installed on the described body 1 all is processed as same size, such design makes can exchange between the form cover plate group 2, and can exchange mutually with oil sprayer position regulation and stuck-module 3 and simulated combustion chamber unit position adjusting type modules 4, feasible experiment can be carried out in a plurality of directions, has improved the versatility of device; All be processed with circular groove on the circular mounting groove simultaneously, in order to lay O-ring seals to guarantee the body tightness.
Described form cover plate group 2 comprises form cover plate 2a and plexiglass form 2b.Described form cover plate 2a is installed on four sides of body 1, and 1 of body adopts mechanical connection.On the surface of contact of each cover plate and body, all be processed with the groove of laying O-ring seals.Described plexiglass form 2b is installed in the space between form cover plate and the body, all lays O-ring seals on the surface of contact of itself and body and cover plate.
As Fig. 2, Fig. 3, shown in Figure 4, described oil sprayer upper cover plate 3d is installed in the circular mounting groove of body 1 upper surface, adopts mechanical connection with body 1.One through hole is set on the upper cover plate 3d, and described through hole can be divided into through hole and lower through-hole two-part, and last through hole footpath is big, and the lower through-hole footpath is little, and last through hole one end is processed with screw thread, is used for fixing fuel injector sleeve 3c; Lower through-hole one end is processed with the twice annular groove, in order to seal ring to be installed.
Described oil sprayer sleeve 3c external diameter is made up of three parts, first portion is injector plate fixing rod 3c1, injector plate 3a tightened up be positioned on the oil sprayer sleeve 3c, and then realization oil sprayer 3b compaction process, second portion is oil sprayer upper cartridge 3c2,3d is threaded with the oil sprayer upper cover plate, and third part is oil sprayer lower cartridge 3c3, and its external diameter is processed with in order to adjust the location grid chi 3c4 of the relative position of oil sprayer 3b in form; Be the diminishing through hole in aperture in the middle of the oil sprayer sleeve 3c, match with oil sprayer 3b external diameter, in order to oil sprayer 3b to be installed; The described oil sprayer upper cartridge 3c2 outside is processed with screw thread, twines sealing strip at screw thread during use, and is connected with upper cover plate 3d.The described oil sprayer lower cartridge 3c3 outside is processed with location grid chi 3c4, is used for oil sprayer sleeve 3c in the accurate location of form.Earlier oil sprayer 3b is placed in the oil sprayer sleeve 3c during use, uses injector plate 3a that oil sprayer 3b is compressed; One rocking arm is inserted between the injector plate fixing rod 3c1, rotate rocking arm and from form, read the reading of locating on the grid chi 3c4, the correct position in oil sprayer 3b arrival form.
Further, described is a square plate be used to the injector plate 3a that compresses oil sprayer 3b.
Further, described injector plate fixing rod 3c1 is two lag bolts.
Described lower cover plate 4b is installed in the circular mounting groove of body 1 lower surface, adopts mechanical connection with body 1.The centre of lower cover plate 4b is a through hole, and the through hole inboard is processed with screw thread, in order to the positioning rod 4a1 of the simulated combustion chamber position adjusting mechanism 4a that is threaded.Described positioning rod 4a1 surface Machining has screw thread, and the lower end connects location handwheel 4a4, and upper end and simulated combustion chamber 4e adopt mechanical connection; Described locating stud tube 4a2 is installed in the lower cover plate upper surface, and locating stud tube 4a2 arranges locating stud, and locating stud 4a3 upper end is connected with simulated combustion chamber machinery 4e.During use, rotating position handwheel 4a4, positioning rod 4a1 will move upward, and simulated combustion chamber 4e moves up under the thrust of positioning rod 4a1.Owing to be subjected to being installed on the restriction of the locating stud tube 4a2 on the lower cover plate 4b, make two locating stud 4a3 that are fixed in 4e lower end, simulated combustion chamber to axially move in the direction along positioning rod 4a1, thereby guarantee that simulated combustion chamber 4e keeps vertical with the form direction all the time.
Also be equipped with on the described lower cover plate 4b in order to the suction valve 4c that regulates back pressure in the body and in order to the outlet valve 4d of the fuel oil getting rid of the high pressure nitrogen in the body and gather.
Further, as Fig. 5, described simulated combustion chamber 4e is the two-dimentional firing chamber with burning chamber of diesel engine middle section geometrical shape, and its lower end is connected respectively at locating stud 4a3 and positioning rod 4a1.
In order to guarantee to test accuracy, adopt sealing between oil sprayer 3b and the oil sprayer sleeve 3c between described body 1 and the plexiglass form 2b, between body 1 and the form cover plate group 2, between body 1 and the oil sprayer upper cover plate 3d, between body 1 and the lower cover plate 4b, between oil sprayer upper cover plate 3d and the oil sprayer lower cartridge 3c3, between lower cover plate 4b and the positioning rod 4a1, can use the sealing configuration of as above telling the seal ring of stating in person, as Fig. 6, Fig. 7, also can adopt other sealing configurations.
Fuel-oil atmozation characteristic test process is at first the each part mentioned above seal ring to be installed, and form cover plate group 2 is installed on the body 1 with plexiglass form 2b; Adjust oil sprayer position adjustment block 3 and simulated combustion chamber unit position adjusting type modules 4 then, determine the relative position of oil sprayer 3b and simulated combustion chamber 4e; Open suction valve 4c and reach the requirement back pressure until the body internal pressure; Open light-source system; Oil supply system pressure is set, and is oil sprayer 3b fuel feeding; High-speed camera collection spraying information; Experiment finishes the back and opens outlet valve 4d, and the fuel oil of piling up in the body will be discharged the body external world under the effect of pressurized gas.
The above; only be the preferable embodiment of the present invention; but protection scope of the present invention is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the present invention discloses; be equal to replacement or change according to technological scheme of the present invention and inventive concept thereof, all should be encompassed within protection scope of the present invention.
Claims (9)
1. novel fuel spraying visual experimental apparatus comprises body, form cover plate group, oil sprayer position regulation and stuck-module and simulated combustion chamber unit position adjusting type modules, it is characterized in that:
Described body has the regular cube cavity structure, is provided with in order to the circular mounting groove of form cover plate group, oil sprayer position regulation and stuck-module and simulated combustion chamber unit position adjusting type modules to be installed at each face of body;
Described form cover plate group comprises in the circular mounting groove of four sides that are installed in body, and body adopts the form cover plate of mechanical connection and is installed in plexiglass form in the space between form cover plate and the body;
Described oil sprayer position regulation and stuck-module, also fixing in order to the position of adjusting oil sprayer, comprise in the circular mounting groove that is installed in the body upper surface, adopt the centre of mechanical connection to have in order to lay the oil sprayer upper cover plate of oil sprayer sleeve through hole with body, with centre that the oil sprayer cover plate is threaded have the aperture match with the oil sprayer external diameter through hole in order to the oil sprayer sleeve of oil sprayer to be installed, the injector plate that is installed on the oil sprayer in the oil sprayer sleeve and is used for compressing oil sprayer;
Described simulated combustion chamber unit position adjusting type modules, in order to adjust the position of simulated combustion chamber unit, comprise the simulated combustion chamber, be installed in the circular mounting groove of body lower surface, lower cover plate with body employing mechanical connection, one through hole in order to the simulated combustion chamber position adjusting mechanism that is threaded is set in the middle of the described lower cover plate, and in order to adjust position, simulated combustion chamber and to guarantee that the simulated combustion chamber keeps vertical simulated combustion chamber position adjusting mechanism with the form direction all the time, also be equipped with on the described lower cover plate in order to the suction valve of regulating back pressure in the body and in order to the outlet valve of the fuel oil getting rid of the high pressure nitrogen in the body and gather.
2. novel fuel according to claim 1 spraying visual experimental apparatus, it is characterized in that: the processing dimension unanimity of described circular mounting groove, in order to realize between the form cover plate group, form cover plate group and oil sprayer position regulation and stuck-module and simulated combustion chamber unit position adjusting type modules exchange.
3. novel fuel according to claim 1 spraying visual experimental apparatus, it is characterized in that: the through hole of described oil sprayer upper cover plate comprises: be processed with screw thread in the aperture, be used for processing in the last through hole of fixing fuel injector sleeve and the aperture twice annular groove in order to the lower through-hole of seal ring to be installed, described on through-hole aperture greater than the lower through-hole aperture.
4. novel fuel according to claim 1 spraying visual experimental apparatus, it is characterized in that: described oil sprayer sleeve is made up of three parts, first portion is the injector plate fixing rod, described injector plate fixing rod is positioned injector plate on the oil sprayer sleeve, and then realizes that oil sprayer compresses; Second portion is the oil sprayer upper cartridge, and its external diameter is processed with screw thread, is threaded with the oil sprayer upper cover plate; Third part is the oil sprayer lower cartridge, and its external diameter is processed with in order to adjust the location grid chi of the relative position of oil sprayer in form.
5. novel fuel according to claim 4 spraying visual experimental apparatus, it is characterized in that: described injector plate fixing rod is two lag bolts.
6. novel fuel according to claim 1 spraying visual experimental apparatus, it is characterized in that: described injector plate is a square plate.
7. novel fuel according to claim 1 spraying visual experimental apparatus, it is characterized in that: described simulated combustion chamber position adjusting mechanism comprises: the surface Machining screw thread is installed on the positioning rod in the lower cover plate through hole and two groups of locating stud tubes that are installed on the lower cover plate upper surface; Described positioning rod upper end and simulated combustion chamber mechanical connection, lower end are provided with a location handwheel; In the described locating stud tube locating stud is set, locating stud upper end and simulated combustion chamber mechanical connection.
8. novel fuel according to claim 7 spraying visual experimental apparatus, it is characterized in that: described simulated combustion chamber is the two-dimentional firing chamber with burning chamber of diesel engine sectional shape, and its lower end is connected respectively at locating stud and positioning rod.
9. novel fuel according to claim 1 spraying visual experimental apparatus is characterized in that: between described body and the plexiglass form, between body and the form cover plate group, between body and the oil sprayer upper cover plate, between body and the lower cover plate, between oil sprayer upper cover plate and the oil sprayer sleeve, between lower cover plate and the positioning rod, between oil sprayer and the oil sprayer sleeve seal ring is installed all.
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| CN201310183178XA CN103244330A (en) | 2013-05-16 | 2013-05-16 | Novel fuel spray visual experiment device |
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| CN201310183178XA CN103244330A (en) | 2013-05-16 | 2013-05-16 | Novel fuel spray visual experiment device |
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| CN104005893A (en) * | 2014-06-04 | 2014-08-27 | 北京航空航天大学 | Wall surface variable impingent spray testing constant volume bomb |
| CN105571872A (en) * | 2016-01-25 | 2016-05-11 | 中国科学技术大学 | Visible engine combustion chamber simulation experiment device |
| CN105841968A (en) * | 2016-04-26 | 2016-08-10 | 江苏大学 | Device for spray-wall impingement combustion experiment in constant volume bomb |
| CN106525443A (en) * | 2016-10-25 | 2017-03-22 | 北京工业大学 | Multifunctional combustion testing device and method for simulating engine conditions |
| CN108286484A (en) * | 2017-12-29 | 2018-07-17 | 上海交通大学 | Realize the spraying forming method of diesel combustion similitude |
| CN109268183A (en) * | 2018-11-20 | 2019-01-25 | 宁波裕隆汽车制泵有限公司 | A kind of fuel injector installation latch closure and its processing method |
| CN112540045A (en) * | 2020-10-29 | 2021-03-23 | 西安交通大学 | Test system of spraying cross-section liquid phase concentration |
| CN113465927A (en) * | 2021-07-15 | 2021-10-01 | 哈尔滨工程大学 | Movable multi-oil-injector end cover |
| CN114017175A (en) * | 2021-10-13 | 2022-02-08 | 江铃汽车股份有限公司 | Engine water jacket analysis method |
| CN114608834A (en) * | 2022-04-12 | 2022-06-10 | 上海交通大学 | Model device applied to aero-engine spray combustion research |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104005893B (en) * | 2014-06-04 | 2016-09-07 | 北京航空航天大学 | The rebuffed atomizing test constant-volume elastomer that a kind of wall is variable |
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| CN105571872A (en) * | 2016-01-25 | 2016-05-11 | 中国科学技术大学 | Visible engine combustion chamber simulation experiment device |
| CN105841968A (en) * | 2016-04-26 | 2016-08-10 | 江苏大学 | Device for spray-wall impingement combustion experiment in constant volume bomb |
| CN105841968B (en) * | 2016-04-26 | 2018-04-13 | 江苏大学 | A kind of device that wall combustion experiment is hit for constant volume bullet internal spraying |
| CN106525443B (en) * | 2016-10-25 | 2019-01-22 | 北京工业大学 | A kind of the multi-functional combustion test device and test method of simulated engine condition |
| CN106525443A (en) * | 2016-10-25 | 2017-03-22 | 北京工业大学 | Multifunctional combustion testing device and method for simulating engine conditions |
| CN108286484A (en) * | 2017-12-29 | 2018-07-17 | 上海交通大学 | Realize the spraying forming method of diesel combustion similitude |
| CN109268183A (en) * | 2018-11-20 | 2019-01-25 | 宁波裕隆汽车制泵有限公司 | A kind of fuel injector installation latch closure and its processing method |
| CN112540045A (en) * | 2020-10-29 | 2021-03-23 | 西安交通大学 | Test system of spraying cross-section liquid phase concentration |
| CN113465927A (en) * | 2021-07-15 | 2021-10-01 | 哈尔滨工程大学 | Movable multi-oil-injector end cover |
| CN113465927B (en) * | 2021-07-15 | 2022-05-06 | 哈尔滨工程大学 | Movable multi-oil-injector end cover |
| CN114017175A (en) * | 2021-10-13 | 2022-02-08 | 江铃汽车股份有限公司 | Engine water jacket analysis method |
| CN114608834A (en) * | 2022-04-12 | 2022-06-10 | 上海交通大学 | Model device applied to aero-engine spray combustion research |
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Application publication date: 20130814 |