CN103953487A - Laser ignition device of engine - Google Patents
Laser ignition device of engine Download PDFInfo
- Publication number
- CN103953487A CN103953487A CN201410210797.8A CN201410210797A CN103953487A CN 103953487 A CN103953487 A CN 103953487A CN 201410210797 A CN201410210797 A CN 201410210797A CN 103953487 A CN103953487 A CN 103953487A
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- China
- Prior art keywords
- laser
- ignition
- engine
- optical fiber
- window
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Abstract
The invention relates to a laser ignition device of an engine. At present, a laser ignition technology is widely applied to aerospace and military, and is relatively mature. The power density of modern laser application is more than 10<19>W/cm<2>. Laser ignition modes comprise a single-point ignition mode, a double-point ignition mode and a multi-point ignition mode. A laser ignition system consists of four parts, namely a laser, an optical fiber and an optical fiber joint, a laser ignition element and a safety device. The laser ignition device of the engine comprises the laser (1), wherein the laser is connected with the optical fiber (2); the laser and the optical fiber are arranged right above a window (3); the window is embedded into the cylinder wall of the top or the side part of a cylinder (6) through a clamp (4); a sealing ring (5) is arranged in the middle of the clamp. The laser ignition device of the engine belongs to engine ignition devices.
Description
technical field:
the present invention relates to a kind of engine laser ignition device.
background technique:
laser ignition uses laser energy ignite or ignite energetic material.Laser ignition is widely used in space flight and military aspect at present, and technology comparative maturity.The specific power of Modern Laser application has reached 10
19
w/cm
2
above.Laser ignition mode has: single-point igniting, two point igniting and multi-point spark.Laser Ignition System is made up of four parts such as laser, optical fiber and fibre-optical splice, laser ignition element and safty device.
crystalline ceramics has the following advantages: (1) has the physicochemical properties similar to monocrystalline, spectral characteristic and laser activity; (2) easily prepare large-sized laser transparent ceramic, and shape is easily controlled; (3) manufacturing cycle is short, and cost of production is low; (4) can realize high-concentration dopant, optical uniformity is good; (5) can prepare multilayer and multi-functional laser transparent ceramic.
summary of the invention:
the object of the present invention is to provide a kind of engine laser ignition device.
the object of the present invention is achieved like this:
a kind of engine laser ignition device, its composition comprises: laser, described laser is connected with optical fiber, described laser and described optical fiber are arranged on window. directly over, described window material embeds by jig in the cylinder wall of cylinder head or sidepiece, has seal ring in the middle of described jig.
described engine laser ignition device, described window material used is Nd:YAG pottery, the shape that is shaped as convex lens of described window.
beneficial effect:
1. use laser ignition can increase lean-burn boundary; Multi-point spark can be realized, the flame mechanism of weak mixture can be accelerated; Ignition location can leave combustor surface, the heat transfer loss while having reduced igniting; Effectively control firing time and ignition intensity, and easily realize automatically controlled; Without electrode, there is not electrode erosion problem;
2. during because of engine operation, the temperature in cylinder is very high, and has concussion, so the material of window must be high temperature resistant, shock-resistant.The present invention adopts YAG crystalline ceramics, it is corrosion-resistant that it has high temperature resistant (1950 DEG C), wear-resistant, shock-resistant, hardness high (Mohs hardness 8.5), intensity is high, and refractive index (1.83) is low, the features such as the light penetration in 0.23～8.0 mu m waveband still can reach 84%, and linear expansion coeffcient is little.Visible, infrared band has good through performance, can be used for transparent armor, material of infrared window, the watch window of high-temperature high-pressure apparatus.The fusing point of Nd:YAG pottery, 1950 DEG C of left and right, can bear the high temperature in cylinder, therefore can adopt the material of Nd:YAG pottery as window.
brief description of the drawings:
accompanying drawing 1 is structural representation of the present invention.
embodiment:
embodiment 1:
a kind of engine laser ignition device, its composition comprises: laser 1, described laser is connected with optical fiber 2, described laser and described optical fiber be arranged on window 3 directly over, the laser 7 that laser sends is by fiber-optic illuminated on window, described window embeds by jig 4 in the cylinder wall of cylinder 6 tops or sidepiece, has seal ring 5 in the middle of described jig.
embodiment 2:
according to the engine laser ignition device described in embodiment 1, described window material used is Nd:YAG pottery, the shape that is shaped as convex lens of described window, and the material of described window has focusing function and higher fusing point and higher transmittance.
embodiment 3:
according to the engine laser ignition device described in embodiment 1, described laser power is high, good stability, and volume is little, generally adopts impulse semiconductor laser; The single pulse energy of described laser is higher than the combustion threshold of gasoline; Described laser can be excited by vehicle power.
Claims (2)
1. an engine laser ignition device, its composition comprises: laser, it is characterized in that: described laser is connected with optical fiber, described laser and described optical fiber be arranged on window directly over, described window embeds by jig in the cylinder wall of cylinder head or sidepiece, has seal ring in the middle of described jig.
2. engine laser ignition device according to claim 1, is characterized in that: described window material used is Nd:YAG pottery, the shape that is shaped as convex lens of described window.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410210797.8A CN103953487A (en) | 2014-05-19 | 2014-05-19 | Laser ignition device of engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410210797.8A CN103953487A (en) | 2014-05-19 | 2014-05-19 | Laser ignition device of engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103953487A true CN103953487A (en) | 2014-07-30 |
Family
ID=51330809
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410210797.8A Pending CN103953487A (en) | 2014-05-19 | 2014-05-19 | Laser ignition device of engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103953487A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108443913A (en) * | 2018-03-16 | 2018-08-24 | 中国人民解放军国防科技大学 | Combustion chamber and scramjet based on high repetition frequency laser |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5022324A (en) * | 1989-06-06 | 1991-06-11 | Hercules Incorporated | Piezoelectric crystal powered ignition device |
| US20080035088A1 (en) * | 2006-08-09 | 2008-02-14 | Johann Klausner | Laser ignition arrangement |
| CN101463789A (en) * | 2007-12-19 | 2009-06-24 | Ge延巴赫两合无限公司 | Device for focusing laser light in a combustion chamber of a combustion engine |
| JP2010019150A (en) * | 2008-07-09 | 2010-01-28 | Sumitomo Electric Ind Ltd | Laser ignition device |
| CN102455000A (en) * | 2010-11-02 | 2012-05-16 | 通用电气公司 | System and method for igniting a combustor |
| US20130206091A1 (en) * | 2012-02-13 | 2013-08-15 | Denso Corporation | Laser ignition apparatus |
| CN103459831A (en) * | 2011-04-05 | 2013-12-18 | 浜松光子学株式会社 | Laser ignition device |
| RO129307A0 (en) * | 2013-05-30 | 2014-03-28 | Institutul Naţional De Cercetare-Dezvoltare Pentru Fizica Laserilor, Plasmei Şi Radiaţiei | Compact composite monolithic laser system with simultaneous delivery of two laser beams |
| CN204003231U (en) * | 2014-05-19 | 2014-12-10 | 哈尔滨固泰电子有限责任公司 | Engine laser ignition device |
-
2014
- 2014-05-19 CN CN201410210797.8A patent/CN103953487A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5022324A (en) * | 1989-06-06 | 1991-06-11 | Hercules Incorporated | Piezoelectric crystal powered ignition device |
| US20080035088A1 (en) * | 2006-08-09 | 2008-02-14 | Johann Klausner | Laser ignition arrangement |
| CN101463789A (en) * | 2007-12-19 | 2009-06-24 | Ge延巴赫两合无限公司 | Device for focusing laser light in a combustion chamber of a combustion engine |
| JP2010019150A (en) * | 2008-07-09 | 2010-01-28 | Sumitomo Electric Ind Ltd | Laser ignition device |
| CN102455000A (en) * | 2010-11-02 | 2012-05-16 | 通用电气公司 | System and method for igniting a combustor |
| CN103459831A (en) * | 2011-04-05 | 2013-12-18 | 浜松光子学株式会社 | Laser ignition device |
| US20130206091A1 (en) * | 2012-02-13 | 2013-08-15 | Denso Corporation | Laser ignition apparatus |
| RO129307A0 (en) * | 2013-05-30 | 2014-03-28 | Institutul Naţional De Cercetare-Dezvoltare Pentru Fizica Laserilor, Plasmei Şi Radiaţiei | Compact composite monolithic laser system with simultaneous delivery of two laser beams |
| CN204003231U (en) * | 2014-05-19 | 2014-12-10 | 哈尔滨固泰电子有限责任公司 | Engine laser ignition device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108443913A (en) * | 2018-03-16 | 2018-08-24 | 中国人民解放军国防科技大学 | Combustion chamber and scramjet based on high repetition frequency laser |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20140730 |