CN105179099B - A kind of large-scale diesel engine Flow field visualization cylinder cap and method - Google Patents
A kind of large-scale diesel engine Flow field visualization cylinder cap and method Download PDFInfo
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- CN105179099B CN105179099B CN201510611826.6A CN201510611826A CN105179099B CN 105179099 B CN105179099 B CN 105179099B CN 201510611826 A CN201510611826 A CN 201510611826A CN 105179099 B CN105179099 B CN 105179099B
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- flow field
- hole
- light source
- laser light
- diesel engine
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Abstract
The invention discloses a kind of large-scale diesel engine Flow field visualization cylinder cap and method, cylinder head to have an annular inner rim；Radial symmetric offers multipair through hole on the perisporium of the annular inner rim, and a LASER Light Source wherein is being installed in a through hole, LASER Light Source is used for the information for gathering Flow field in fuel injection processes, with the through hole of LASER Light Source opposite side in ccd image sensor is installed, ccd image sensor is used for the information for receiving the Flow field sended over by LASER Light Source, and passes it to outside ccd image processing unit and handled；The opposite that LASER Light Source is placed, it can arbitrarily select the through hole of one, two (or more) different angle to place ccd image sensor, the situation of Flow field can be so observed from multiple angles, improves the accuracy of analysis.For other temporarily without using through hole, sealed, filled with metal plugging part, to prevent to fuel oil burning impact.
Description
Technical field
The present invention relates to the observation of cylinder of diesel engine flow field, more particularly to a kind of large-scale diesel engine Flow field visualization cylinder
Lid and method.
Background technology
In recent years, diesel engine with its power is big, efficiency high and be widely used, especially led in navigation ship
Domain, is the development of human society, and the progress of seafaring is made that huge contribution.Diesel engine in the course of the work, actually
It is that fuel oil carries out spraying diffusion combustion in combustion chamber, and then produces power.The atomization process of fuel oil depends not only on spray orifice outer gas
The interaction of body and oily beam, it is more dependent upon the flow regime of fuel oil in the situation and spray orifice of Flow field.Fuel oil is being atomized
In combustion process, due to being influenceed by many factors, there is polytropy and multi-dimensional nature, atomizing effect has to the efficiency of fuel oil
Important influence, and the state of Flow field is an important factor for influenceing atomizing effect.Therefore it is visual to cylinder of diesel engine flow field
It is necessary that change, which carries out research,.
At present, the visual research method for cylinder of diesel engine flow field is mainly real using the related art method of laser
It is existing.For diesel engine experiment porch, typically optical engine transform or use constant volume combustion bomb, with reference to light path
System and data acquisition and control system are tested, and the transformation for optical engine is typically to increase between body and cylinder cap
One is added to lengthen body and lengthened piston, one transparent window as big as possible in lengthened piston upper design, to observe
The spraying of fuel oil, mix, catch fire and combustion process, remodeling method is clearly to be not easy what is realized for large-scale diesel engine in this.
The content of the invention
The shortcomings that it is an object of the invention to overcome above-mentioned prior art and deficiency, there is provided flowed in a kind of large-scale diesel engine cylinder
Field visualized cylinder cap and method.The present invention can not have an impact outer to diesel engine this body structure, facilitate realization can as far as possible
Installation and checkout depending on changing system, thus can know that the Flow Field Distribution situation in cylinder of diesel engine, improves the efficiency of diesel engine.
The present invention is achieved through the following technical solutions：
A kind of large-scale diesel engine Flow field visualizes cylinder cap, including cylinder head body, cylinder head body include cylinder head
1, cylinder head 1 has an annular inner rim 2；Radial symmetric offers multipair through hole 3 on the perisporium of the annular inner rim 2, and at it
In a LASER Light Source is installed in a through hole 3, LASER Light Source is used for the information for gathering Flow field in fuel injection processes,
It is used to receive by laser light with installation ccd image sensor, ccd image sensor in the through hole 3 of LASER Light Source opposite side
The information for the Flow field that source sends over, and pass it to outside ccd image processing unit and handled；
The through hole 3 of LASER Light Source and ccd image harvester will not be installed, sealed with plugging part.
Through hole 3 is six pairs；Wherein, the axle center of every a pair of through holes 3 is with an axis.
The inclined angle of every a pair of through holes 3 is identical；Angle of inclination between each two through holes 3 adjacent to each other is not
It is identical.
In six pairs of through holes 3, there is that the axis of five pairs of through holes 3 is parallel, the axis of another pair through hole 3 vertically with this five
To the axis of through hole 3.
According to actual condition, according to fuel oil injection direction and angle, specific used through hole 3 is selected to place laser
Light source, so as to comprehensively collect the information in flow field during fuel injection；Meanwhile ccd image sensor is used to receive
The information of the Flow field sended over by LASER Light Source, and pass it to outside ccd image processing unit and divided
Analysis, processing；The information in flow field during cylinder interior fuel injection can be observed by display screen for information after processing.
The present invention is had the following advantages and effect relative to prior art：
The technology used in the present invention means are different from the object that traditional means are targeted.In the conventional technology, mainly
The visualization device done for small-sized diesel engine for automobile, and it is also seldom for the visualization device of big marine diesel engine.Pass
The means of system are that the transformation of light path system is carried out to engine, generally transform the form of constant volume chamber as, piston, cylinder jacket etc. are entered
Row lengthens, therefore the transformation degree to engine is larger.
And targeted object of the invention is large-scale diesel engine, it is not meet engineering reality that big change is carried out to engine
's.The present invention is mainly processed to cylinder head.Radial symmetric offers more on the perisporium of cylinder head annular inner rim
To through hole, with an axis, the inclined angle of every a pair of through holes is identical in the axle center of every a pair of through holes；But
Angle of inclination between each two through holes adjacent to each other differs.Such be designed with selects to close beneficial to according to actual condition
Suitable through hole places LASER Light Source and ccd image sensor, light beam is covered flow field area as big as possible.
The opposite that LASER Light Source of the present invention is placed, it can arbitrarily select one, two (or more) different angles pass through
Ccd image sensor is placed in perforation, and the situation of Flow field can be so observed from multiple angles, improves the accurate of analysis
Property.For other temporarily without using through hole, can be sealed, be filled with the plugging part of metal, to prevent being fired to fuel oil
Burning impacts.
Observation of the present invention for cylinder of diesel engine flow field uses laser technology means.Laser due to concentration class it is high,
The features such as spatial resolution is high, measurement range is big, high sensitivity, accordingly acts as the observation accurate and effective to Flow field.
Brief description of the drawings
Fig. 1 is that large-scale diesel engine Flow field of the present invention visualizes cylinder cover structure schematic diagram.
Fig. 2 is that large-scale diesel engine Flow field of the present invention visualizes cylinder cap, through hole sectional view.
Fig. 3 is that LASER Light Source, ccd image sensor and ccd image processing unit electrically connect schematic diagram.
Embodiment
The present invention is more specifically described in detail with reference to specific embodiment.
Embodiment
As shown in Figures 1 to 3.A kind of large-scale diesel engine Flow field visualization cylinder cap of the present invention, including cylinder head body, gas
Cylinder cap body includes cylinder head 1, and cylinder head 1 has an annular inner rim 2；Radial symmetric offers on the perisporium of the annular inner rim 2
Multipair through hole 3, and a LASER Light Source is wherein being installed in a through hole 3, LASER Light Source sprayed for gathering fuel oil
The information of Flow field in journey, sensed with installation ccd image sensor, ccd image in the through hole 3 of LASER Light Source opposite side
Device is used for the information for receiving the Flow field sended over by LASER Light Source, and passes it to outside ccd image processing
Device is handled；
The through hole 3 of LASER Light Source and ccd image harvester will not be installed, sealed with plugging part.
The through hole 3 is six pairs；Wherein, the axle center of every a pair of through holes 3 is with an axis.Run through for every a pair
The inclined angle in hole 3 is identical.But the angle of inclination between each two through holes 3 adjacent to each other differs.The present embodiment
In six pairs of shown through holes 3, there is that the axis of five pairs of through holes 3 is parallel, the axis of another pair through hole 3 vertically with five couple
The axis of through hole 3.In actual use, through hole 3 open up quantity, position can be according to the diameter and actual observation of cylinder head 1
It is required that determine.
In actual use, the angle of inclination of through hole 3 is opened up according to the mode of fuel nozzle, so as to for different angles
The fuel oil injection situation of degree can find suitable position and place LASER Light Source, expand the observation space to Flow field.
According to actual condition, according to fuel oil injection direction and angle, specific used through hole 3 is selected to place laser
Light source, so as to comprehensively collect the information in flow field during fuel injection；Meanwhile ccd image sensor is used to receive
The information of the Flow field sended over by LASER Light Source, and pass it to outside ccd image processing unit and divided
Analysis, processing；The information in flow field during cylinder interior fuel injection can be observed by display screen for information after processing.
As described above, the present invention can be better realized.
Embodiments of the present invention are simultaneously not restricted to the described embodiments, other any Spirit Essences without departing from the present invention
With made under principle change, modification, replacement, combine, simplification, should be equivalent substitute mode, be included in the present invention's
Within protection domain.
Claims (6)
1. a kind of large-scale diesel engine Flow field visualizes cylinder cap, including cylinder head body, cylinder head body include cylinder head
(1), it is characterised in that：Cylinder head (1) has an annular inner rim (2)；Radial symmetric offers on the perisporium of the annular inner rim (2)
Multipair through hole (3), and a LASER Light Source is installed in a through hole (3) wherein, LASER Light Source is used to gather fuel oil spray
The information of Flow field during penetrating, scheme with installation ccd image sensor, CCD in the through hole of LASER Light Source opposite side (3)
As the information for the Flow field that sensor is sended over for reception by LASER Light Source, and pass it to outside CCD figures
As processing unit is handled；
The through hole (3) of LASER Light Source and ccd image harvester will not be installed, sealed with plugging part.
2. large-scale diesel engine Flow field according to claim 1 visualizes cylinder cap, it is characterised in that：Through hole (3) is
Six pairs；Wherein, the axle center of every a pair of through holes (3) is on same axis.
3. large-scale diesel engine Flow field according to claim 2 visualizes cylinder cap, it is characterised in that：Every a pair of through holes
(3) inclined angle is identical.
4. large-scale diesel engine Flow field according to claim 2 visualizes cylinder cap, it is characterised in that：It is each adjacent to each other
Angle of inclination between two through holes (3) differs.
5. large-scale diesel engine Flow field according to claim 2 visualizes cylinder cap, it is characterised in that：Six pairs of through holes
(3) in, there is that the axis of five pairs of through holes (3) is parallel, the axis of another pair through hole (3) is perpendicular to five pairs of through holes (3)
Axis.
6. a kind of large-scale diesel engine Flow field method for visualizing, it is characterised in that using any one of claim 1 to 5 institute
State large-scale diesel engine Flow field visualization cylinder cap and realize that implementation method comprises the following steps：
According to actual condition, according to fuel oil injection direction and angle, specific used through hole (3) is selected to place laser light
Source, so as to comprehensively collect the information in flow field during fuel injection；Meanwhile ccd image sensor be used for receive by
The information for the Flow field that LASER Light Source sends over, and pass it to outside ccd image processing unit analyzed,
Processing；The information in flow field during cylinder interior fuel injection can be observed by display screen for information after processing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510611826.6A CN105179099B (en) | 2015-09-23 | 2015-09-23 | A kind of large-scale diesel engine Flow field visualization cylinder cap and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510611826.6A CN105179099B (en) | 2015-09-23 | 2015-09-23 | A kind of large-scale diesel engine Flow field visualization cylinder cap and method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105179099A CN105179099A (en) | 2015-12-23 |
| CN105179099B true CN105179099B (en) | 2018-01-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510611826.6A Expired - Fee Related CN105179099B (en) | 2015-09-23 | 2015-09-23 | A kind of large-scale diesel engine Flow field visualization cylinder cap and method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110411706B (en) * | 2019-07-01 | 2020-09-01 | 天津大学 | Device for optical measurement and calibration of near-wall flow field at top of combustion chamber of internal combustion engine |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1103335A1 (en) * | 1999-11-23 | 2001-05-30 | Process Conception Ingenierie S.A. | Device forming optical head to direct a laser beam onto a wall surface to be treated of a workpiece, like an internal combustion engine cylinder |
| DE202009015316U1 (en) * | 2008-11-17 | 2010-02-18 | Forschungsgesellschaft für Verbrennungskraftmaschinen und Thermodynamik mbH | Device for determining the position of a piston |
| CN201753640U (en) * | 2010-08-20 | 2011-03-02 | 奇瑞汽车股份有限公司 | Lengthened piston in optical engine |
| 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 |
-
2015
- 2015-09-23 CN CN201510611826.6A patent/CN105179099B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1103335A1 (en) * | 1999-11-23 | 2001-05-30 | Process Conception Ingenierie S.A. | Device forming optical head to direct a laser beam onto a wall surface to be treated of a workpiece, like an internal combustion engine cylinder |
| DE202009015316U1 (en) * | 2008-11-17 | 2010-02-18 | Forschungsgesellschaft für Verbrennungskraftmaschinen und Thermodynamik mbH | Device for determining the position of a piston |
| CN201753640U (en) * | 2010-08-20 | 2011-03-02 | 奇瑞汽车股份有限公司 | Lengthened piston in optical engine |
| 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 |
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| CN105179099A (en) | 2015-12-23 |
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