CN106089479A - A kind of lengthened piston mechanism visualizing optical engine device - Google Patents
A kind of lengthened piston mechanism visualizing optical engine device Download PDFInfo
- Publication number
- CN106089479A CN106089479A CN201610421624.XA CN201610421624A CN106089479A CN 106089479 A CN106089479 A CN 106089479A CN 201610421624 A CN201610421624 A CN 201610421624A CN 106089479 A CN106089479 A CN 106089479A
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- Prior art keywords
- piston
- lengthened
- cylinder
- cap
- optical engine
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F3/00—Pistons
- F02F3/0015—Multi-part pistons
- F02F3/0023—Multi-part pistons the parts being bolted or screwed together
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F11/00—Arrangements of sealings in combustion engines
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
- Testing Of Engines (AREA)
Abstract
It is an object of the invention to provide a kind of lengthened piston mechanism visualizing optical engine device, including cylinder cap, lengthened piston, former piston, cylinder body, lower cover is fixed on cylinder body, by adding long struts support between cylinder cap and lower cover, quartz cylinder sleeve and Metallic cylinder is set gradually below cylinder cap, the upper end of lengthened piston is positioned in Metallic cylinder, and the lower end of lengthened piston is connected with former piston.The present invention utilizes helicitic texture piston cap and lengthened piston main part to be coupled together, threaded pretightning force makes piston cap and transparent window composition surface have enough compactnesses, solve and between transparent window and piston, seal not tight, the problem of gas leakage, compression ratio can be changed by the thickness of change sealing gasket, it is achieved the needs measured under the conditions of different compression ratios simultaneously；Using four road compression rings, piston ring uses equadag coating, it is possible to reduce the abrasion to cylinder sleeve, scribbles oils and fats between compression ring and cylinder body simultaneously, effectively plays lubrication and the effect sealed.
Description
Technical field
The present invention relates to the piston mechanism of a kind of electromotor, specifically electromotor.
Background technology
Optical engine is a kind of visualization electromotor, utilizes high-speed photography, Raman scattering, laser-induced fluorescence (LIF), particle
The different optic test means such as image speed measurement (PIV) can obtain motion, the interior mixing of cylinder in the spraying of electromotor internal combustion oil of cylinder, cylinder
The information of the formation of gas, temperature field, concentration field, velocity field, burning and emission formation etc., provides for the bags closed
One visual research platform, fuel design and optimization for electromotor have directive significance.Currently, external seminar
Knit and all set up optical engine visual testing platform with mechanism, the structure of electromotor is designed and the development of Theory of Combustion
Serve positive effect, the domestic stage being currently in primary in this research on the one hand.
The typical structure of optical engine is the mode using lengthened piston, and top land utilizes quartz to make transparency window
Mouthful, most of space of piston lower portion is emptied to dispose lower 45 ' inclination angle reflecting mirrors so that in-cylinder process can be by piston
Transparent window reaches reflecting mirror, thus carries out high-speed capture.
Optical engine uses lengthened piston structure to be that engine technology research is provided convenience, but there is also many simultaneously
Problem, such as, the patent of publication number CN101709676 discloses one " a kind of lengthened piston for optical engine ", its technology
Scheme is that together with top land window portion is bolted with piston elongated portion, the upper and lower both sides of transparent window are divided
It is not lined with " C " shape ring of inconel, solves between transparent window and top land pit, to seal not tight, the problem of gas leakage；Public
The patent " a kind of optical engine and lengthened piston thereof " of the number of opening CN1O1737191, uses identical bolt connecting mode to solve
Not tight, the problem of gas leakage is sealed between transparent window and top land circular hole.Above-mentioned technical scheme is used on the one hand to dismantle transparent
Need demounting bolt before window, need again during installation to tight a bolt, lose time and remove and install inconvenience, also cannot protect simultaneously
Card bolt pretightening is uniformly distributed on a transparent window, transparent window tight seal；On the other hand there is no pit on lengthened piston
Shape, it is impossible to need to arrange combustion-chamber shape according to experiment.
The patent of publication number CN1916380A discloses one " optical engine ", and it arranges spiral shell at lengthened piston upper surface
Quartz window is compressed and seals by bolt.Above-mentioned lengthened piston causes calculating engine compression ratio difficulty because arranging bolt hole, with
Time at piston upper surface, valve pit also cannot be set.
The patent of publication number CN201963414U discloses one " a kind of by the lengthened piston of former cylinder machine Piston reform ", for
Ensure that transparent window will not skid off from the upper end of top section, have diameter in the upper end of top section less than transparency window
The aperture of mouth diameter.Use the technical scheme in aperture, although ensure that transparent window will not skid off from the upper end of top section, but
Not it is observed that the combustion-chamber shape impact on spraying, gaseous mixture mixed process etc..
Therefore, design one removes and installs convenience, transparent window consistent seal, band combustion recess shape and can arrange
The practical value improving optical engine is particularly important by the optical engine lengthened piston structure of valve pit.
Summary of the invention
It is an object of the invention to provide engine fuel can be sprayed, move in cylinder, in cylinder the formation etc. of gaseous mixture enter
A kind of lengthened piston mechanism visualizing optical engine device of row research.
The object of the present invention is achieved like this:
A kind of lengthened piston mechanism visualizing optical engine device of the present invention, is characterized in that: include cylinder cap, lengthening
Piston, former piston, cylinder body, cylinder body is fixedly installed the lower cover of through hole, props up by adding long struts between cylinder cap and lower cover
Support, sets gradually quartz cylinder sleeve and Metallic cylinder below cylinder cap, the upper end of lengthened piston is positioned in Metallic cylinder, lengthened piston
Lower end stretches to cylinder body through the through hole of lower cover and is connected with former piston.
The present invention can also include:
1, described lengthened piston includes piston cap, main part, and piston cap is connected by screw thread with main part, piston cap
It is positioned at above main part, main part arranges round platform, between round platform and piston cap, be fixed with clear glass, main part two
Side has square through hole, installs reflecting mirror, arrange CCD camera, main part on the reflection path of reflecting mirror at square through hole
Outside piston ring is set.
2, the height of square through hole is more than lengthened piston stroke, and the width of square through hole is more than the diameter of clear glass.
3, the stroke of piston ring is without departing from the region of Metallic cylinder.
4, pit is set in piston cap, piston cap is offered valve pit.
Present invention have an advantage that the present invention utilizes helicitic texture piston cap and lengthened piston main part to be connected
Come, threaded pretightning force makes piston cap and transparent window composition surface have enough compactnesses, solve transparent window with
Seal tight, the problem of gas leakage between piston, compression ratio can be changed by the thickness of change sealing gasket simultaneously, it is achieved different pressures
Contracting than under the conditions of the needs measured, additionally the shape of piston cap can the pit shape of the various combustor of arbitrarily devised one-tenth, meet
The test needs to various combustion-chamber shapes；Using four road compression rings, piston ring uses equadag coating, it is possible to reduce to cylinder sleeve simultaneously
Abrasion, between compression ring and cylinder body, scribble oils and fats, effectively play lubrication and seal effect.Bottom lengthened piston main part
The design of through hole and boss ensure that the axiality of lengthened piston and cylinder sleeve, it is to avoid lengthened piston touches with cylinder sleeve when moving back and forth
Hit.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention；
Fig. 2 is the schematic diagram of lengthened piston of the present invention.
Detailed description of the invention
Illustrate below in conjunction with the accompanying drawings and the present invention be described in more detail:
In conjunction with Fig. 1,2, a kind of lengthened piston 5 visualizing optical engine device of the present invention, including cylinder cap 1, lengthen
Piston 5, former piston 9, cylinder body 10 etc..
Lengthened piston 5 is made up of piston cap 11 and lengthened piston main part 17 two parts, and piston cap 11 includes pit 12
With screw thread 14, lengthened piston includes screw thread 14, piston ring 15, round platform 18, square through hole 19, through hole 20 and boss 21.
Piston cap 11 and lengthened piston main part 17 are connected by screw thread 14 structure.Permissible by design pit 12 shape
The shape of piston cap 11 is designed to various combustion-chamber shape, valve pit can also be offered on piston cap 11 simultaneously, pass through
The height adjusting piston cap can change optical engine compression ratio.
The round platform 18 of lengthened piston main part 17 is provided with transparent window 16, simultaneously upper and lower at transparent window 16
Both sides are lined with pad 13, piston cap 11 and lengthened piston main part 17 and are compressed by transparent window 16 by screw thread 14 pretightning force,
Make transparent window 16 and lengthened piston 5 fit sealing.
Owing to transparent cylinder sleeve 2 is very easy to be scratched by piston ring 15, and piston ring 15 is at transparent cylinder sleeve 2 and Metallic cylinder 3
Two different mediums are shown in motion, it is difficult to ensure that motion is steady, therefore piston ring 15 is designed to only move in Metallic cylinder 3,
Piston ring 15 uses four road compression rings, and piston ring 15 uses equadag coating simultaneously, to reduce abrasion to cylinder sleeve because not due to
There is no lubricating system, between compression ring and cylinder body, scribble oils and fats, effectively play lubrication and the effect sealed.
Lengthened piston main part 17 both sides have the square through hole 19 installing 45° angle reflecting mirror 8, the height of square through hole 19
Degree is more than engine stroke, to avoid lengthened piston 5 to encounter reflecting mirror 8 when moving up and down；The width of square through hole 19 is the biggest
Diameter in transparent window 16, in order to increase the visual field observing the situations such as cylinder internal spraying, burning as far as possible.
Lengthened piston 5 is positioned by boss 21 with former piston 9, and bolt passes through hole 20 by lengthened piston 5 and former piston 9
It is fixed together, it is ensured that lengthened piston 5 and former piston 9 are coaxial.
Starting visualization optical engine, control fuel oil injection and start, source of parallel light is along the axis being perpendicular to quartz cylinder sleeve 2
Direction enters combustor, and a portion directional light is along combustor axis direction through clear glass 16 anti-by 45 ° of reflecting mirrors 8
Penetrating, reflection light enters CCD camera 6, determines that the situation records such as the spraying of cross-sectional direction, burning are in CCD phase by a certain for combustor
On machine 6.
The shape of piston cap 11 can the pit shape of the various combustor of arbitrarily devised one-tenth, can also offer the most above and keep away
Valve is cheated, and can change optical engine compression ratio by the height of design piston cap.
Transparent window 16 is arranged on the round platform 18 of lengthened piston body portion thereof, and top and bottom are lined with sealing gasket 13, depend on
By threaded pre-tightening power, transparent window is compressed by piston cap, makes transparent window and lengthened piston tight seal.
Piston ring 15 is made up of four road compression rings, and compression ring uses equadag coating to reduce the abrasion to cylinder sleeve；Owing to not moistening
Sliding system, scribbles oils and fats between compression ring and cylinder sleeve, can effectively play lubrication and the effect sealed.
The boss 21 that be connected fixing with former piston 9 location and through hole 20 it is provided with bottom lengthened piston main part 17.
Claims (6)
1. visualize a lengthened piston mechanism for optical engine device, it is characterized in that: include cylinder cap, lengthened piston, former
Piston, cylinder body, cylinder body is fixedly installed the lower cover of through hole, by adding long struts support, cylinder cap between cylinder cap and lower cover
Lower section sets gradually quartz cylinder sleeve and Metallic cylinder, and the upper end of lengthened piston is positioned in Metallic cylinder, and the lower end of lengthened piston is worn
The through hole crossing lower cover stretches to cylinder body and is connected with former piston.
A kind of lengthened piston mechanism visualizing optical engine device the most according to claim 1, is characterized in that: institute
Stating lengthened piston and include piston cap, main part, piston cap is connected by screw thread with main part, and piston cap is positioned at main part
Top, main part arranges round platform, is fixed with clear glass between round platform and piston cap, and main part both sides have square logical
Hole, installs reflecting mirror, arranges CCD camera on the reflection path of reflecting mirror at square through hole, the outside of main part arranges work
Plug ring.
A kind of lengthened piston mechanism visualizing optical engine device the most according to claim 2, is characterized in that: side
The height of shape through hole is more than lengthened piston stroke, and the width of square through hole is more than the diameter of clear glass.
4. according to a kind of lengthened piston mechanism visualizing optical engine device described in Claims 2 or 3, its feature
It is: the stroke of piston ring is without departing from the region of Metallic cylinder.
5. according to a kind of lengthened piston mechanism visualizing optical engine device described in Claims 2 or 3, its feature
It is: pit is set in piston cap, piston cap is offered valve pit.
A kind of lengthened piston mechanism visualizing optical engine device the most according to claim 4, is characterized in that: live
Pit is set in gag, piston cap is offered valve pit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610421624.XA CN106089479A (en) | 2016-06-12 | 2016-06-12 | A kind of lengthened piston mechanism visualizing optical engine device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610421624.XA CN106089479A (en) | 2016-06-12 | 2016-06-12 | A kind of lengthened piston mechanism visualizing optical engine device |
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| Publication Number | Publication Date |
|---|---|
| CN106089479A true CN106089479A (en) | 2016-11-09 |
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| CN201610421624.XA Pending CN106089479A (en) | 2016-06-12 | 2016-06-12 | A kind of lengthened piston mechanism visualizing optical engine device |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107023378A (en) * | 2017-06-01 | 2017-08-08 | 天津大学 | Burning chamber of diesel engine with visualization form |
| CN109723564A (en) * | 2019-01-11 | 2019-05-07 | 清华大学 | Complete visual optics piston and piston component |
| CN111075588A (en) * | 2019-12-06 | 2020-04-28 | 江苏大学 | Optical engine capable of expanding visual field and weakening light reflection |
| CN111207321A (en) * | 2018-11-02 | 2020-05-29 | 上海汽车集团股份有限公司 | Visual engine and in-cylinder lighting device thereof |
| CN113063110A (en) * | 2019-12-30 | 2021-07-02 | 上海汽车集团股份有限公司 | Lighting device in engine cylinder |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11117779A (en) * | 1997-10-15 | 1999-04-27 | Toyota Motor Corp | Variable compression ratio mechanism for internal combustion engine |
| CN101709676A (en) * | 2009-11-02 | 2010-05-19 | 奇瑞汽车股份有限公司 | Lengthened piston for optical engine |
| CN201963414U (en) * | 2010-12-25 | 2011-09-07 | 奇瑞汽车股份有限公司 | Lengthened piston reformed from original cylinder machine piston |
| CN103541813A (en) * | 2013-11-15 | 2014-01-29 | 吉林大学 | Visual direct-injection gasoline engine |
-
2016
- 2016-06-12 CN CN201610421624.XA patent/CN106089479A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11117779A (en) * | 1997-10-15 | 1999-04-27 | Toyota Motor Corp | Variable compression ratio mechanism for internal combustion engine |
| CN101709676A (en) * | 2009-11-02 | 2010-05-19 | 奇瑞汽车股份有限公司 | Lengthened piston for optical engine |
| CN201963414U (en) * | 2010-12-25 | 2011-09-07 | 奇瑞汽车股份有限公司 | Lengthened piston reformed from original cylinder machine piston |
| CN103541813A (en) * | 2013-11-15 | 2014-01-29 | 吉林大学 | Visual direct-injection gasoline engine |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107023378A (en) * | 2017-06-01 | 2017-08-08 | 天津大学 | Burning chamber of diesel engine with visualization form |
| CN111207321A (en) * | 2018-11-02 | 2020-05-29 | 上海汽车集团股份有限公司 | Visual engine and in-cylinder lighting device thereof |
| CN109723564A (en) * | 2019-01-11 | 2019-05-07 | 清华大学 | Complete visual optics piston and piston component |
| CN111075588A (en) * | 2019-12-06 | 2020-04-28 | 江苏大学 | Optical engine capable of expanding visual field and weakening light reflection |
| CN113063110A (en) * | 2019-12-30 | 2021-07-02 | 上海汽车集团股份有限公司 | Lighting device in engine cylinder |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20161109 |
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| RJ01 | Rejection of invention patent application after publication |