CN108443045A - A kind of multicylinder engine laser-ignition unit and its method - Google Patents
A kind of multicylinder engine laser-ignition unit and its method Download PDFInfo
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- CN108443045A CN108443045A CN201810444730.9A CN201810444730A CN108443045A CN 108443045 A CN108443045 A CN 108443045A CN 201810444730 A CN201810444730 A CN 201810444730A CN 108443045 A CN108443045 A CN 108443045A
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- laser
- optical fibre
- cylinder
- lens
- output optical
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02P—IGNITION, OTHER THAN COMPRESSION IGNITION, FOR INTERNAL-COMBUSTION ENGINES; TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES
- F02P23/00—Other ignition
- F02P23/04—Other physical ignition means, e.g. using laser rays
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Optical Couplings Of Light Guides (AREA)
Abstract
The invention discloses a kind of multicylinder engine laser-ignition unit and its methods, are related to laser ignition field.Device includes generating device of laser, input optical fibre, several output optical fibres, conversion equipment and several laser conduction devices；The laser conduction device includes convex lens, concavees lens, the beam splitting lens being sequentially arranged along laser optical path, Fresnel Lenses and protective glass.The present invention selects corresponding output optical fibre to be docked with input optical fibre by conversion equipment；Corresponding laser conduction device is set to receive light beam, light beam forms multiple spot fire focus in cylinder after laser conduction device, realizes the igniting of cylinder.With the movement of conversion equipment, input optical fibre is sequentially docked with corresponding output optical fibre according to the ignition order of cylinder；Realize the sequentially igniting of multi-cylinder transmitter.The device of the invention need to only manipulate conversion equipment and can sequentially be lighted a fire to cylinder, and light beam, the arrangement no requirement (NR) to cylinder are transmitted using optical fiber, and can realize that multifocal is lighted a fire.
Description
Technical field
The present invention relates to laser ignition field more particularly to a kind of multicylinder engine laser-ignition units.
Background technology
Engine ignition mode includes lighting and compression ignition, and wherein spark plug is the important component of spark-ignition engine.Tradition
Spark ignition need to regularly replace spark plug, be otherwise susceptible to central electrode corrosion, spark plug aging, carbon distribution is serious etc.
Phenomenon causes cold-starting automobile relatively difficult, frequently occurs idling flameout, and engine acceleration can decline.Laser ignition is made
For a kind of firing technique of increasingly maturation, it is widely used at present in space flight and military aspect, in automobile engine
Field has also obtained extensive research.Compared with spark ignition, laser ignition cold starting performance is good, easily controllable time of ignition
And ignition location, multifocal igniting may be implemented, be suitable for the operating mode of Various Complex and changeable igniting in cylinder
It is required that.
Current engine laser ignition device, mostly single cylinder spark device, multiple cylinders need multiple laser points
Fire and control device.The patent of invention that publication No. is CN104121134A proposes to realize multi-cylinder igniting by galvanometer and speculum
Method, this patent propose the difference choosing by being connected with the conversion equipment of input optical fibre and output optical fibre to realize to output optical fibre
It selects, to realize the igniting of the multiple cylinders of engine.Current engine laser ignition device, mostly single-point igniter, and
It is difficult to accurately control the position for focusing ignition point, the beam splitting lens that this patent proposes is on the basis of original convex lens and concavees lens
It is transformed, the multiple focus points of beam of laser are realized in the separation that light beam may be implemented.Publication No. is the invention of CN102062037A
Patent proposition piezo-electric crystal, electromagnet, the modes such as air pressure movement change the position of laser focus point, but it is poly- to be difficult to realize laser
The accurate movement of focus, this patent proposes to move beam splitting lens by sliding shoe and rail plate and Fresnel Lenses is sharp to change
The distance and direction and laser focus point of the position of light focus point, wherein beam splitting lens and Fresnel Lenses movement is in the cylinder
Displacement distance is identical with direction.
Invention content
The purpose of the present invention is overcome the deficiencies in the prior art, it is proposed that a kind of multicylinder engine laser-ignition unit and
Its method.
Technical scheme is as follows：
A kind of multicylinder engine laser-ignition unit includes generating device of laser, input optical fibre, several output optical fibres, turns
Changing device and several laser conduction devices；The laser conduction device includes the convex lens being sequentially arranged along laser optical path, recessed
Lens, beam splitting lens, Fresnel Lenses and protective glass.Generating device of laser is sent out for generating laser beam, input optical fibre with laser
Generating apparatus is connected, and is used for transmission laser beam；Several output optical fibres are used for outgoing laser beam；Conversion equipment makes input optical fibre and is chosen
The output optical fibre docking selected；Laser conduction device is arranged on cylinder, and the laser beam that output optical fibre exports is made to start
It is focused in machine cylinder；Laser conduction device is equal with number of engine cylinders, and corresponds installation.
Preferably, the output optical fibre is equal with laser conduction device quantity, and corresponds installation；Output optical fibre is defeated
The laser beam gone out is incident on the convex lens of corresponding laser conduction device, i.e., output optical fibre, laser conduction device are gentle
Cylinder is one-to-one relationship.The laser beam directly propagated by light path is different from based on the laser beam that output optical fibre passes to,
Without having to worry about being stopped in light path, and the position of cylinder is not required；And it is needed by the laser beam of paths
It is high to light path arrangement required precision in order to make laser accurately be incident in cylinder according to the different light path of the location arrangements of cylinder.
Preferably, the conversion equipment includes the disk that about two fittings are installed with one heart；Input optical fibre is located therein
On one disk；Each output optical fibre be located on another disk and each output optical fibre distribution on the same circumference, input optical fibre with
The distance in the center of circle is equal to each output optical fibre at a distance from the center of circle, and at least one disk can be rotated around the center of circle in two disks, when defeated
When entering optical fiber and output optical fibre and turning to position opposing upper and lower, docked above and below input optical fibre and output optical fibre.Input optical fibre with
When output optical fibre docks, laser beam can be passed to.
Preferably, the output optical fibre is sequentially arranged clockwise or counterclockwise by the ignition order of its corresponding cylinder
On circumference.
Preferably, the edge of the convex lens, concavees lens, beam splitting lens, Fresnel Lenses and protective glass is plane.Side
Edge be plane be conducive to that said lens and protective glass stablize on the shell of laser conduction device.
Preferably, the laser conduction device further includes mobile device, and the mobile device includes that sliding shoe and sliding are led
Rail；Beam splitting lens and Fresnel Lenses Guan County are on sliding shoe；Sliding shoe is arranged on rail plate；The sliding side of sliding shoe
To parallel with light path.The distance between beam splitting lens and Fresnel Lenses are constant, and integral installation is on sliding shoe, but the two is opposite
It can change in the distance of concavees lens or protective glass.
Preferably, the multicylinder engine laser-ignition unit further includes control device, the control device point
It is not connected with generating device of laser, conversion equipment.Control device controls the opening and closing of generating device of laser, control conversion equipment selection
Corresponding output optical fibre.
Preferably, the protective glass is high temperature resistant planar optics, is arranged on cylinder inner wall face, as cylinder inner wall
The part in face.
The ignition method of the multicylinder engine laser-ignition unit is as follows：
1) generating device of laser generates collimated laser beam；It is input to conversion equipment through input optical fibre；
2) each output optical fibre is sequentially arranged circumferentially clockwise or counterclockwise by the ignition order of its corresponding cylinder；
3) rotate conversion equipment upper disk or lower disc, make input optical fibre according to cylinder ignition order sequentially with it is corresponding
Output optical fibre docking；
When input optical fibre is docked with output optical fibre；Laser beam is through optical fiber output to the convex lens of corresponding laser conduction device
On；Convex lens gathers laser beam, and the laser beam gathered is converted to directional light by concavees lens again again, which compares
It is narrower in the collimated laser beam reflected back；Laser beam is divided into the different light beam in the direction of propagation by beam splitting lens；Light beam passes through phenanthrene
Multiple igniting focuses are formed after Nie Er lens and protective glass in cylinder, igniting focal point energy is big, realizes the igniting of cylinder；
4) with the movement of conversion equipment, input optical fibre according to cylinder ignition order sequentially with corresponding output optical fibre pair
It connects；Realize the sequentially igniting of multi-cylinder transmitter.
Compared with prior art, the invention has the advantages that：
1) the multiple cylinder sparks of engine are realized by a laser-ignition unit and control device.
2) laser beam is detached by beam splitting lens and realizes the multiple focus points of beam of laser.
3) position of the focus point in cylinder can be changed by mobile beam splitting lens and Fresnel Lenses, wherein light splitting is saturating
The distance that the displacement distance of mirror and Fresnel Lenses and direction and focus position change is identical with direction.
4) edge of optical lens is plane, is easy to fixed.
5) Fresnel Lenses is thinner compared to common convex lens, and save material reduces laser straight-line transmitting in glass simultaneously
The attenuation losses broadcast.
6) high temperature resistant planar optics can protect optical lens from the impact of high temperature in cylinder and concussion.
Description of the drawings
Fig. 1 is laser ignition light path schematic diagram of the present invention；
1, control device, 2, generating device of laser, 3, input optical fibre, 4, conversion equipment, 5, output optical fibre, 6, convex lens,
7, concavees lens, 8, beam splitting lens, 9, Fresnel Lenses, 10, protective glass.
Fig. 2 is conversion equipment schematic diagram；
Fig. 3 is the structural schematic diagram of lens；
Fig. 4 is that schematic diagram is fixed in the installation of lens；
Fig. 5 is convex plano lens and light path schematic diagram；
Fig. 6 is recessed plano lens and light path schematic diagram.
Specific implementation mode
As shown in Figure 1, the multicylinder engine laser-ignition unit of the present embodiment includes generating device of laser 2, input light
Fibre 3, several output optical fibres 5, conversion equipment 4 and several laser conduction devices；The laser conduction device includes along laser light
Convex lens 6 that road is sequentially arranged, concavees lens 7, beam splitting lens 8, Fresnel Lenses 9 and protective glass 10.Generating device of laser is used for
Laser beam is generated, input optical fibre is connected with generating device of laser, is used for transmission laser beam；Several output optical fibres are for exporting laser
Beam；Conversion equipment makes input optical fibre be docked with selected output optical fibre；Laser conduction device is arranged on cylinder, makes
The laser beam of output optical fibre output is focused in cylinder；Laser conduction device is equal with number of engine cylinders,
And correspond installation.
Preferably, the output optical fibre is equal with laser conduction device quantity, and corresponds installation；Output optical fibre is defeated
The laser beam gone out is incident on the convex lens of corresponding laser conduction device, i.e., output optical fibre, laser conduction device are gentle
Cylinder is one-to-one relationship.
Preferably, the conversion equipment includes the disk that about two fittings are installed with one heart；Input optical fibre is located therein
On one disk；Each output optical fibre be located on another disk and each output optical fibre distribution on the same circumference, input optical fibre with
The distance in the center of circle is equal to each output optical fibre at a distance from the center of circle, and at least one disk can be rotated around the center of circle in two disks, when defeated
When entering optical fiber and output optical fibre and turning to position opposing upper and lower, docked above and below input optical fibre and output optical fibre.Input optical fibre with
When output optical fibre docks, laser beam can be passed to.
As shown in Fig. 2, left-hand component is upper disk, input optical fibre is installed on upper disk, right-hand component is lower disc；It is existing
By taking 6 Cylinder engines as an example, output optical fibre, laser conduction device and cylinder are one-to-one, it is assumed that the igniting of cylinder
Sequence is followed successively by A-D-B-F-C-E；It then presses (also can be counterclockwise) clockwise shown in Fig. 2 right-hand components and output optical fibre is also pressed into A-D-
The sequence of B-F-C-E is sequentially arranged；When work, make lower disc relatively rotate, you can control input optical fibre sequentially with output light
Fibre presses the sequentially docking of A-D-B-F-C-E, realizes the igniting of the correspondence cylinder of cylinder.
The ignition method of multicylinder engine laser-ignition unit of the present invention is as follows：
1) generating device of laser generates collimated laser beam；It is input to conversion equipment through input optical fibre；
2) each output optical fibre is sequentially arranged circumferentially clockwise or counterclockwise by the ignition order of its corresponding cylinder；
3) rotate conversion equipment upper disk or lower disc, make input optical fibre according to cylinder ignition order sequentially with it is corresponding
Output optical fibre docking；
When input optical fibre is docked with output optical fibre；Laser beam is through optical fiber output to the convex lens of corresponding laser conduction device
On；Convex lens gathers laser beam, and the laser beam gathered is converted to directional light by concavees lens again again, which compares
It is narrower in the collimated laser beam reflected back；Laser beam is divided into the different light beam in the direction of propagation by beam splitting lens；Light beam passes through phenanthrene
Multiple igniting focuses are formed after Nie Er lens and protective glass in cylinder, igniting focal point energy is big, realizes the igniting of cylinder；
4) with the movement of conversion equipment, input optical fibre according to cylinder ignition order sequentially with corresponding output optical fibre pair
It connects；Realize the sequentially igniting of multi-cylinder transmitter.
As shown in Figure 3 and Figure 4, it is preferred that convex lens, concavees lens, beam splitting lens, Fresnel Lenses and the protective glass
Edge be plane.Edge is the shell mounted on laser conduction device that plane is conducive to said lens and protective glass is stablized
On.
Preferably, the laser conduction device further includes mobile device, and the mobile device includes that sliding shoe and sliding are led
Rail；Beam splitting lens and Fresnel Lenses Guan County are on sliding shoe；Sliding shoe is arranged on rail plate；The sliding side of sliding shoe
To parallel with light path.The distance between beam splitting lens and Fresnel Lenses are constant, and integral installation is on sliding shoe, but the two is opposite
It can change in the distance of concavees lens or protective glass.Focal position in the i.e. changeable cylinder of the sliding of sliding shoe as a result,.
Preferably, the multicylinder engine laser-ignition unit further includes control device, the control device point
It is not connected with generating device of laser, conversion equipment.Control device controls the opening and closing of generating device of laser, control conversion equipment selection
Corresponding output optical fibre.
Preferably, the protective glass is high temperature resistant planar optics, is arranged on cylinder inner wall face, as cylinder inner wall
The part in face.
As shown in Figure 5 and Figure 6, beam splitting lens can be convex plano lens or recessed plano lens, in original convex lens or recessed
It is transformed on the basis of mirror, realizes spectrophotometric result.The marginal portion of convex plano lens is identical as convex lens, and central part is plane.
The laser for being mapped to convex flat convex lens center does not change incident direction and projects outward.The laser for being mapped to convex plano lens edge is poly- to center
Hold together outside injection.The marginal portion of recessed plano lens is identical as concavees lens, and central part is plane.It is mapped to convex flat convex lens center
Laser does not change incident direction and projects outward.The laser for being mapped to recessed planoconvex spotlight edge dissipates outside injection around.Institute
The beam splitting lens stated with the combination of plane mirror section to convex lens part or concave lens portion by not detaching light beam, including but not
It is confined to both shapes.
Claims (10)
1. a kind of multicylinder engine laser-ignition unit, it is characterised in that including：
Generating device of laser is used to generate laser beam；
Input optical fibre is connected with generating device of laser, is used for transmission laser beam
Several output optical fibres are used for outgoing laser beam；
Conversion equipment makes input optical fibre be docked with selected output optical fibre；
Several laser conduction devices；It is arranged on cylinder, makes the laser beam that output optical fibre exports in cylinder
Inside it is focused；Laser conduction device is equal with number of engine cylinders, and corresponds installation；
The laser conduction device includes convex lens, concavees lens, the beam splitting lens being sequentially arranged along laser optical path, and Fresnel is saturating
Mirror and protective glass.
2. multicylinder engine laser-ignition unit according to claim 1, it is characterised in that the output optical fibre with
Laser conduction device quantity is equal, and corresponds installation；The laser beam of output optical fibre output is incident on corresponding laser
On the convex lens of conduction device.
3. multicylinder engine laser-ignition unit according to claim 2, it is characterised in that the conversion equipment packet
It includes about two and is bonded the disk installed with one heart；Input optical fibre is located in one of on disk；Each output optical fibre is located at another
On disk and the distribution of each output optical fibre on the same circumference, input optical fibre is equal to each output optical fibre and the center of circle at a distance from the center of circle
Distance, at least one disk can be rotated around the center of circle in two disks, when input optical fibre turn to output optical fibre it is opposing upper and lower
When position, input optical fibre docks up and down with output optical fibre.
4. multicylinder engine laser-ignition unit according to claim 3, it is characterised in that the output optical fibre is pressed
The ignition order of its corresponding cylinder is sequentially arranged circumferentially clockwise or counterclockwise.
5. multicylinder engine laser-ignition unit according to claim 1, it is characterised in that the convex lens, recessed
The edge of mirror, beam splitting lens, Fresnel Lenses and protective glass is plane.
6. multicylinder engine laser-ignition unit according to claim 1, it is characterised in that the laser conduction device
Further include mobile device, the mobile device includes sliding shoe and rail plate；Beam splitting lens and Fresnel Lenses Guan County are mounted in
On sliding shoe；Sliding shoe is arranged on rail plate；The glide direction of sliding shoe is parallel with light path.
7. multicylinder engine laser-ignition unit according to claim 1, it is characterised in that further include control device, institute
The control device stated is connected with generating device of laser, conversion equipment respectively.
8. multicylinder engine laser-ignition unit according to claim 1, it is characterised in that the protective glass is resistance to
High-temperature plane eyeglass is arranged on cylinder inner wall face, the part as cylinder inner wall face.
9. multicylinder engine laser-ignition unit according to claim 1, it is characterised in that the beam splitting lens is
Convex plano lens or recessed plano lens, the convex plano lens marginal portion is identical as convex lens, and central part is plane；Described is recessed
Plano lens marginal portion is identical as concavees lens, and central part is plane.
10. the ignition method of multicylinder engine laser-ignition unit described in a kind of claim 4, it is characterised in that：
1) generating device of laser generates collimated laser beam；It is input to conversion equipment through input optical fibre；
2) each output optical fibre is sequentially arranged circumferentially clockwise or counterclockwise by the ignition order of its corresponding cylinder；
3) rotate conversion equipment upper disk or lower disc, make input optical fibre according to cylinder ignition order sequentially with it is corresponding defeated
Go out fiber alignment；
When input optical fibre is docked with output optical fibre；On convex lens of the laser beam through optical fiber output to corresponding laser conduction device；
Convex lens gathers laser beam, and the laser beam gathered is converted to directional light by concavees lens again again, the directional light compared to
The collimated laser beam reflected back is narrower；Laser beam is divided into the different light beam in the direction of propagation by beam splitting lens；；Light beam passes through luxuriant and rich with fragrance alunite
Multiple igniting focuses are formed after that lens and protective glass in cylinder, igniting focal point energy is big, realizes the igniting of cylinder；
4) with the movement of conversion equipment, input optical fibre is sequentially docked with corresponding output optical fibre according to the ignition order of cylinder；It is real
The sequentially igniting of existing multi-cylinder transmitter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810444730.9A CN108443045B (en) | 2018-05-10 | 2018-05-10 | Laser ignition device for multi-cylinder engine and method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810444730.9A CN108443045B (en) | 2018-05-10 | 2018-05-10 | Laser ignition device for multi-cylinder engine and method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108443045A true CN108443045A (en) | 2018-08-24 |
| CN108443045B CN108443045B (en) | 2023-05-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810444730.9A Active CN108443045B (en) | 2018-05-10 | 2018-05-10 | Laser ignition device for multi-cylinder engine and method thereof |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010014030A (en) * | 2008-07-03 | 2010-01-21 | Ngk Spark Plug Co Ltd | Laser ignition device |
| CN102062037A (en) * | 2011-01-18 | 2011-05-18 | 天津大学 | Variable-focus engine laser ignition device |
| CN105203222A (en) * | 2015-09-15 | 2015-12-30 | 哈尔滨工业大学 | Device for measuring temperature of flame through one-dimensional scanning on basis of Fresnel lens and CARS |
| CN205049056U (en) * | 2015-09-30 | 2016-02-24 | 南京理工大学 | Laser ignition with photoswitch |
| JP2017106406A (en) * | 2015-12-11 | 2017-06-15 | 株式会社リコー | Laser ignition device and internal combustion engine |
-
2018
- 2018-05-10 CN CN201810444730.9A patent/CN108443045B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010014030A (en) * | 2008-07-03 | 2010-01-21 | Ngk Spark Plug Co Ltd | Laser ignition device |
| CN102062037A (en) * | 2011-01-18 | 2011-05-18 | 天津大学 | Variable-focus engine laser ignition device |
| CN105203222A (en) * | 2015-09-15 | 2015-12-30 | 哈尔滨工业大学 | Device for measuring temperature of flame through one-dimensional scanning on basis of Fresnel lens and CARS |
| CN205049056U (en) * | 2015-09-30 | 2016-02-24 | 南京理工大学 | Laser ignition with photoswitch |
| JP2017106406A (en) * | 2015-12-11 | 2017-06-15 | 株式会社リコー | Laser ignition device and internal combustion engine |
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| Publication number | Publication date |
|---|---|
| CN108443045B (en) | 2023-05-23 |
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