CN106451081A - Enhanced discharge igniter for marine large-bore gas engine - Google Patents
Enhanced discharge igniter for marine large-bore gas engine Download PDFInfo
- Publication number
- CN106451081A CN106451081A CN201610956208.XA CN201610956208A CN106451081A CN 106451081 A CN106451081 A CN 106451081A CN 201610956208 A CN201610956208 A CN 201610956208A CN 106451081 A CN106451081 A CN 106451081A
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- Prior art keywords
- electrode
- discharge
- order
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- lateral
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
- H01T13/00—Sparking plugs
- H01T13/20—Sparking plugs characterised by features of the electrodes or insulation
- H01T13/34—Sparking plugs characterised by features of the electrodes or insulation characterised by the mounting of electrodes in insulation, e.g. by embedding
-
- 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
- F02P15/00—Electric spark ignition having characteristics not provided for in, or of interest apart from, groups F02P1/00 - F02P13/00 and combined with layout of ignition circuits
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
- H01T13/00—Sparking plugs
- H01T13/20—Sparking plugs characterised by features of the electrodes or insulation
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
- H01T13/00—Sparking plugs
- H01T13/20—Sparking plugs characterised by features of the electrodes or insulation
- H01T13/22—Sparking plugs characterised by features of the electrodes or insulation having two or more electrodes embedded in insulation
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Spark Plugs (AREA)
Abstract
The invention aims to provide an enhanced discharge igniter for a marine large-bore gas engine. The enhanced discharge igniter comprises a wiring nut, an insulator, a metal casing, a wiring screw, a central electrode and a side electrode, wherein the metal casing is isolated from the central electrode by the insulator; the central electrode is arranged in a central hole of the insulator through threads and is in tight contact with the wiring screw; the side electrode and the metal casing are independent of each other; the side electrode is arranged on the metal casing through threads; each of the side electrode and the central electrode is provided with a first-order discharge electrode and a second-order discharge electrode; in addition, each of the first-order discharge side electrode and the second-order discharge side electrode of the side electrode is provided with a plurality of secondary electrodes; the plurality of secondary electrodes respectively form discharge circuits with secondary electrodes of the first-order discharge central electrode and the second-stage discharge central electrode of the central electrode. According to the enhanced discharge igniter provided by the invention, the ignition stability of the marine gas engine is improved under lean burn conditions, cyclical variation is reduced, and fuel economy and emission performance of the engine are improved.
Description
Technical field
The present invention relates to a kind of engine ignition, the specifically igniting of marine large-diameter gas engine
Device.
Background technology
At present energy shortage and environmental pollution have become as restriction China's economy and the bottleneck problem of social development, exploitation and
Substitute energy source for petroleum using cleaning has become as one of universally acknowledged important technology approach of effectively solving current problem.My god
So gas becomes the scheme of the practicable of current petroleum replacing with the advantage of its aboundresources and combustion cleaning.
Natural gas expanded first application on automobile-used gas engine, and just start in ship and water transportation field
Pilot and plan are promoted.Ship power is mainly diesel engine, and the technical merit of marine diesel is deposited compared with vehicular engine
In larger gap.China's ship's in possession is larger, and cut-off in June, 2013 China's inland navigation craft has 230,000,81,050,000 gross tons, because
The discharge that this boat diesel engine produces is inland river and littoral primary pollution source.In order to optimize China's energy consumption structure, realize
Target for energy-saving and emission-reduction, national Ge great ministries and commissions are just accelerating the research and extension of propelling ship gaseous propellant engine technology to apply.
Natural gas is applied on engine of boat and ship and is mainly adopted two ways at present：Double fuel and pure gas electromotor.Double
Engine fuel has the flexible advantage of Fuel switching, however it is necessary that two sets of fuel storages and feed system, systematic comparison complexity, and
And cost is of a relatively high.And with current state of the art, by the way of mixed combustion, simply realize the DeGrain reducing discharging.And it is single
One fuel gas engine fuel can improve efficiency and big by the optimization design of combustion system with using Lean Burning Technique
Amplitude reduction NOx emission, and do not produce sulphur emissions and Particulate Emission.But, with lean out, the burn cycle of electromotor
Change and increase, HC discharge sharply increases.If cyclical fluctuation is eliminated, in the case of consuming equal fuel, engine power can
To lift 10%, pollutant emission is greatly reduced simultaneously.
Engine of boat and ship is in relatively airtight cabin, and the single of therefore lean-combustion engine catches fire and is possible to lead to arrange
The serious consequences such as trachea blast, threaten the safety of ship's staff and equipment, thereby ensure that gas engine peculiar to vessel reliably catches fire
Even more important with normal combustion.Strengthening igniting is the important means avoiding gas engine peculiar to vessel to catch fire, but in the market
The lighter sold mostly is automobile-used J-type spark plug, such as patent 201380042245.4.But this automobile-used spark plug cannot meet
The high-energy of gas engine peculiar to vessel and high reliability request.
Content of the invention
It is an object of the invention to provide being capable of reliable ignition and a kind of marine large-diameter gas improving combustion stability
Discharge ignition strengthened by electromotor.
The object of the present invention is achieved like this：
A kind of present invention marine large-diameter gas engine strengthens discharge ignition, it is characterized in that：Including wiring nut, absolutely
Edge body, metal shell, wiring screw rod, central electrode, lateral electrode, central electrode is arranged in metal shell, metal shell with
Isolated by installing insulator between heart electrode, central electrode is the first-the four cylinder from top to bottom, sets in insulator
Put wiring screw rod, the first cylinder upper end is contacted with wiring screw rod, the second cylinder is machined with outer with insulator cooperation
Screw thread, the 3rd cylindrical outer surface installs single order discharge centers electrode, the 4th cylindrical outer surface is installed in second order electric discharge
Heart electrode, single order discharge centers electrode and second order discharge centers electrode all include three square cylinder sub-electrodes, metal shell
Lateral electrode is threadedly installed in bottom, setting single order electric discharge lateral electrode and second order electric discharge lateral electrode, single order in lateral electrode
Electric discharge lateral electrode and second order electric discharge lateral electrode all have three J-shaped sub-electrodes, the J-shaped sub-electrode week of three single orders electric discharge lateral electrodes
It is spaced 120 ° upwards, circumferentially-spaced 120 ° of the J-shaped sub-electrode of three second orders electric discharge lateral electrodes, single order electric discharge lateral electrode and second order
Electric discharge lateral electrode J-shaped sub-electrode between alternate arrangement, each single order discharge lateral electrode J-shaped sub-electrode respectively with one
The square cylinder sub-electrode of single order discharge centers electrode constitutes discharge loop, and the J-shaped sub-electrode of each second order electric discharge lateral electrode divides
Do not constitute discharge loop with the square cylinder sub-electrode of a second order discharge centers electrode.
The present invention can also include：
1st, the J-shaped electricity of two second orders electric discharge lateral electrodes that the J-shaped sub-electrode of each single order electric discharge lateral electrode is adjacent
Extremely all it is spaced 60 ° in circumference, the length of the J-shaped sub-electrode of single order electric discharge lateral electrode is less than the J-shaped electricity of second order electric discharge lateral electrode
Pole.
2nd, the side of lateral electrode is machined with tapped location hole, on metal shell corresponding position be machined with recessed
Hole, by making lateral electrode fix with metal shell by way of mounting screw in location hole and pit.
The 3rd, 2 parallel to each other grooves installed for central electrode and tighten are machined with the 3rd cylindrical surface,
Insulator lower end is machined with annular groove, construction opening jump ring in annular groove.
4th, the square cylinder sub-electrode of the corresponding single order discharge centers electrode of the J-shaped sub-electrode of single order electric discharge lateral electrode
Between gap be 1-1.5mm, second order discharge lateral electrode the corresponding second order discharge centers electrode of J-shaped sub-electrode square
Gap between cylinder sub-electrode is 1-1.5mm.
Advantage of the invention is that：By structure design and the coupling of central electrode and lateral electrode, realize marine large-diameter
Multi-quantity in gas engine cylinder and the high-energy ignition of various dimensions, discharge capability is strengthened significantly, and this is for raising lean-burn
Under the conditions of gas engine peculiar to vessel Ignition Stability, reduce cyclical fluctuation and improve engine fuel economy and emission performance tool
Play an important role.
Brief description
Fig. 1 is the structural representation of the present invention；
Fig. 2 a is lateral electrode sectional view, and Fig. 2 b is the upward view of lateral electrode；
Electrode front view centered on Fig. 3 a, electrode upward view centered on Fig. 3 b.
Specific embodiment
Illustrate below in conjunction with the accompanying drawings and the present invention is described in more detail：
In conjunction with Fig. 1-3, marine large-diameter gas engine strengthening discharge ignition of the present invention includes wiring nut 1, insulation
Body 2, upside packing ring 3, metal shell 4, wiring screw rod 5, lower side washer 6, central electrode 7, gasket seal 8, lateral electrode 9 and opening
Jump ring 10 is constituted.Metal shell 4 is isolated by insulator 2 with central electrode 7, and metal shell 4 outer surface has two sections of screw threads,
One screw thread is that other end screw thread is for fixed side electrode 9 for strengthening discharge igniting is installed to engine cylinder lid.
Lateral electrode 9 and metal shell 4 is separate it can be ensured that the maintainability of electrode.The side of lateral electrode 9 is machined with spiral shell in band
The location hole 13 of stricture of vagina, the relevant position of metal shell 4 is machined with pit, prevents the loosening of lateral electrode 9 using screw and comes off.For
Guarantee high-energy igniter can smoothly be installed on engine cylinder lid, and the outer dia of lateral electrode 9 is less than outside metal shell 4
The shaft diameter being connected with cylinder cover.Insulator 2 centre bore is built with wiring screw rod 5 and central electrode 7, wiring screw rod 5
It is all by being threadably mounted at insulator 2 center in the hole with central electrode 7, first central electrode 7 is filled from the lower end of insulator 2
Enter insulator 2 center in the hole, then will be locked for central electrode 7 using opening jump ring 10, turn central electrode 7 using spanner, really
Protect central electrode 7 to be in close contact with opening jump ring 10, then wiring screw rod 5 is loaded centre bore from insulator 2 upside, using torsion
Square spanner carries out reinforcing to be tightened it is ensured that wiring screw rod 5 is in close contact with a cylinder 16 of central electrode, avoids due to power simultaneously
Degree leads to greatly very much insulator 2 to damage.After strengthening discharge igniting installs, check the single order discharge centers electricity of central electrode 7
Pole 14 and second order discharge centers electrode 14 sub-electrode are sub with the single order electric discharge lateral electrode 14 of lateral electrode 9 and second order electric discharge lateral electrode 14
The relative position of electrode and gap, according to the needs of different electromotors, by the fine setting of lateral electrode 9 sub-electrode it is ensured that side is electric
Gap between pole 9 and central electrode 7 sub-electrode is in 1-1.5mm.
Metal shell 4 is isolated by insulator 2 with central electrode 7, has between metal shell 4 inner chamber and insulator 2
Upside packing ring 3 and lower side washer 6；Central electrode 7, leads to by being threadably mounted at insulator 2 center in the hole via on the downside of insulator
Cross opening jump ring 10 to be locked, adjust central electrode 7 and and the contact force with opening jump ring 10 by turning central electrode 7
Degree；Wiring screw rod 5 loads insulator 2 centre bore from the top of insulator 2, and carries out adding by wiring screw rod 5 by torque wrench
Power is it is ensured that wiring screw rod 5 is in close contact with a cylinder 16 of central electrode 7.Mutually only between lateral electrode 9 and metal shell 4
Vertical, it is machined with two kinds of screw threads of two sections of different sizes outside metal shell 4, the screw thread positioned at metal shell 4 lower middle portion is used for
Cover lighter installing hole with engine cylinder to be connected, the screw thread positioned at metal shell 4 end is used for installing lateral electrode 9.
The side of lateral electrode 9 is machined with tapped location hole 13.The relevant position of metal shell 4 is machined with pit, using screw
Prevent the loosening of lateral electrode 9 and come off.Hex nut on metal shell 4 is used for the installation of lighter and tightens, and sealing gasket
Piece 8 is used for sealing cylinder inner high voltage gas.
Fig. 2 is lateral electrode sectional view and upward view.Lateral electrode 9 has single order electric discharge lateral electrode 11 and second order electric discharge lateral electrode
12, single order electric discharge lateral electrode 11 and second order lateral electrode 12 of discharging each has the consistent J-shaped sub-electrode of 3 physical dimensions, is distributed in
The lower limb of lateral electrode 9, that is, single order electric discharge lateral electrode 11 and second order electric discharge respective 3 sub-electrodes of lateral electrode 12 are under lateral electrode 9
Circumferentially-spaced 120 ° of edge, single order discharges between the sub-electrode of lateral electrode 11 and the sub-electrode of adjacent second order electric discharge lateral electrode 12
Every 60 °, the length of single order electric discharge lateral electrode 11 sub-electrode is less than the length of second order electric discharge lateral electrode 12 sub-electrode.Lateral electrode 9
Side is machined with tapped location hole 13, and the relevant position of metal shell 4 is machined with pit, prevents lateral electrode using screw
9 loosen and come off.
Fig. 3 is central electrode front view and upward view.Central electrode 7 has 4 rank column structures：A cylinder 16, b cylinder
Body 17, c cylinder 18 and d cylinder 19.A cylinder 16 upper end is in close contact with wiring screw rod 5, and a cylinder 16 lower end is justified for b
Cylinder 17, b cylinder 17 is machined with external screw thread, and the cooperation for same insulator 2 is installed；In the single order electric discharge of central electrode 7
Heart electrode 14 and second order discharge centers electrode 15 are located on c cylinder 18 and the outer surface of d cylinder 19 respectively, and single order electric discharge
Central electrode 14 and second order discharge centers electrode 15 each have 3 square cylinder sub-electrodes, are distributed on c cylinder 18 He respectively
The outer surface of d cylinder 19, i.e. the radial centre lines of square cylinder sub-electrode mutual and 120 ° of interval in same section；?
The groove 20 that 2 surfaces are parallel to each other is machined with c cylinder 18, the installation for central electrode 7 and tightening.
Claims (9)
1. a kind of marine large-diameter gas engine strengthens discharge ignition, it is characterized in that：Including wiring nut, insulator, gold
Belong to housing, wiring screw rod, central electrode, lateral electrode, central electrode is arranged in metal shell, metal shell and central electrode it
Between by install insulator isolated, central electrode from top to bottom be the first-the four cylinder, in insulator arrange wiring spiral shell
Bar, the first cylinder upper end is contacted with wiring screw rod, the second cylinder is machined with insulator cooperation external screw thread, the 3rd
On cylindrical outer surface, single order discharge centers electrode is installed, installation second order discharge centers electrode on the 4th cylindrical outer surface, one
Rank discharge centers electrode and second order discharge centers electrode all include three square cylinder sub-electrodes, and the bottom of metal shell is passed through
Engagement thread installs lateral electrode, setting single order electric discharge lateral electrode and second order electric discharge lateral electrode, single order electric discharge lateral electrode in lateral electrode
All have three J-shaped sub-electrodes with second order electric discharge lateral electrode, the J-shaped sub-electrode of three single order electric discharge lateral electrodes is circumferentially-spaced
120 °, circumferentially-spaced 120 ° of the J-shaped sub-electrode of three second orders electric discharge lateral electrodes, single order electric discharge lateral electrode and second order discharge side electricity
Arrangement is alternateed, the J-shaped sub-electrode of each single order electric discharge lateral electrode is discharged with a single order respectively between the J-shaped sub-electrode of pole
The square cylinder sub-electrode of central electrode constitutes discharge loop, each second order discharge lateral electrode J-shaped sub-electrode respectively with one
The square cylinder sub-electrode of second order discharge centers electrode constitutes discharge loop.
2. a kind of marine large-diameter gas engine according to claim 1 strengthens discharge ignition, it is characterized in that：Each
All it is spaced in the J-shaped sub-electrode circumference of two second orders electric discharge lateral electrodes that the J-shaped sub-electrode of single order electric discharge lateral electrode is adjacent
60 °, the length of the J-shaped sub-electrode of single order electric discharge lateral electrode is less than the J-shaped sub-electrode of second order electric discharge lateral electrode.
3. a kind of marine large-diameter gas engine according to claim 1 and 2 strengthens discharge ignition, it is characterized in that：
The side of lateral electrode is machined with tapped location hole, and on metal shell, corresponding position is machined with pit, by
In location hole and pit, the mode of mounting screw makes lateral electrode fix with metal shell.
4. a kind of marine large-diameter gas engine according to claim 1 and 2 strengthens discharge ignition, it is characterized in that：
2 parallel to each other grooves installed for central electrode and tighten, insulator lower end are machined with the 3rd cylindrical surface
It is machined with annular groove, construction opening jump ring in annular groove.
5. a kind of marine large-diameter gas engine according to claim 3 strengthens discharge ignition, it is characterized in that：3rd
2 parallel to each other grooves installed for central electrode and tighten are machined with cylindrical surface, insulator lower end processes
There is annular groove, construction opening jump ring in annular groove.
6. a kind of marine large-diameter gas engine according to claim 1 and 2 strengthens discharge ignition, it is characterized in that：
Single order discharge lateral electrode the corresponding square cylinder sub-electrode of single order discharge centers electrode of J-shaped sub-electrode between gap
For 1-1.5mm, second order discharge lateral electrode the corresponding second order discharge centers electrode of J-shaped sub-electrode square cylinder sub-electrode
Between gap be 1-1.5mm.
7. a kind of marine large-diameter gas engine according to claim 3 strengthens discharge ignition, it is characterized in that：Single order
Gap between the corresponding square cylinder sub-electrode of single order discharge centers electrode of J-shaped sub-electrode of electric discharge lateral electrode is 1-
1.5mm, second order discharge lateral electrode the corresponding square cylinder sub-electrode of second order discharge centers electrode of J-shaped sub-electrode between
Gap be 1-1.5mm.
8. a kind of marine large-diameter gas engine according to claim 4 strengthens discharge ignition, it is characterized in that：Single order
Gap between the corresponding square cylinder sub-electrode of single order discharge centers electrode of J-shaped sub-electrode of electric discharge lateral electrode is 1-
1.5mm, second order discharge lateral electrode the corresponding square cylinder sub-electrode of second order discharge centers electrode of J-shaped sub-electrode between
Gap be 1-1.5mm.
9. a kind of marine large-diameter gas engine according to claim 5 strengthens discharge ignition, it is characterized in that：Single order
Gap between the corresponding square cylinder sub-electrode of single order discharge centers electrode of J-shaped sub-electrode of electric discharge lateral electrode is 1-
1.5mm, second order discharge lateral electrode the corresponding square cylinder sub-electrode of second order discharge centers electrode of J-shaped sub-electrode between
Gap be 1-1.5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610956208.XA CN106451081B (en) | 2016-10-28 | 2016-10-28 | A kind of marine large-diameter gas engine strengthens discharge ignition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610956208.XA CN106451081B (en) | 2016-10-28 | 2016-10-28 | A kind of marine large-diameter gas engine strengthens discharge ignition |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106451081A true CN106451081A (en) | 2017-02-22 |
| CN106451081B CN106451081B (en) | 2017-10-31 |
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| CN201610956208.XA Active CN106451081B (en) | 2016-10-28 | 2016-10-28 | A kind of marine large-diameter gas engine strengthens discharge ignition |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10826279B1 (en) | 2019-08-28 | 2020-11-03 | Federal-Mogul Ignition Llc | Spark plug ground electrode configuration |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2441240Y (en) * | 2000-09-28 | 2001-08-01 | 冯君鹏 | Opened spark plug with gaps of multiple points |
| CN200969483Y (en) * | 2006-10-24 | 2007-10-31 | 宋学志 | Spark plug for petrol engine |
| WO2008025476A1 (en) * | 2006-09-01 | 2008-03-06 | Bayerische Motoren Werke Aktiengesellschaft | Spark plug for a hydrogen-powered internal combustion engine |
| CN204407690U (en) * | 2015-01-23 | 2015-06-17 | 刘伟民 | A kind of noble metal spark plug |
| CN105048291A (en) * | 2015-06-29 | 2015-11-11 | 唐萍 | Spark plug |
-
2016
- 2016-10-28 CN CN201610956208.XA patent/CN106451081B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2441240Y (en) * | 2000-09-28 | 2001-08-01 | 冯君鹏 | Opened spark plug with gaps of multiple points |
| WO2008025476A1 (en) * | 2006-09-01 | 2008-03-06 | Bayerische Motoren Werke Aktiengesellschaft | Spark plug for a hydrogen-powered internal combustion engine |
| CN200969483Y (en) * | 2006-10-24 | 2007-10-31 | 宋学志 | Spark plug for petrol engine |
| CN204407690U (en) * | 2015-01-23 | 2015-06-17 | 刘伟民 | A kind of noble metal spark plug |
| CN105048291A (en) * | 2015-06-29 | 2015-11-11 | 唐萍 | Spark plug |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10826279B1 (en) | 2019-08-28 | 2020-11-03 | Federal-Mogul Ignition Llc | Spark plug ground electrode configuration |
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| Publication number | Publication date |
|---|---|
| CN106451081B (en) | 2017-10-31 |
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