CN103423050A - Ignition device of natural gas engine - Google Patents
Ignition device of natural gas engine Download PDFInfo
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- CN103423050A CN103423050A CN2012101597311A CN201210159731A CN103423050A CN 103423050 A CN103423050 A CN 103423050A CN 2012101597311 A CN2012101597311 A CN 2012101597311A CN 201210159731 A CN201210159731 A CN 201210159731A CN 103423050 A CN103423050 A CN 103423050A
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- ignition
- spark plug
- natural gas
- counterbore
- gas engine
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- Combustion Methods Of Internal-Combustion Engines (AREA)
Abstract
The invention discloses an ignition device of a natural gas engine. The ignition device comprises an injection body, an injection head and a sparking plug; the injection body is cylindrical, a sparking plug installation counter bore is formed in the upper end of the injection body, and a gas channel is formed in one side of the sparking plug counter bore; an injection head installation counter bore communicated with the sparking plug installation counter bore and the gas channel is formed in the lower end of the injection body; the injection head is barrel-shaped, the upper end of the injection head is installed in the injection head installation counter bore to form a combustion space, and a flame injection hole is formed in the lower end of the injection head; the sparking plug is installed in the sparking plug installation counter bore, and an electrode at the lower end of the sparking plug stretches into the combustion space. According to the ignition device of the natural gas engine, the step-by-step combustion flame injection technology is adopted, a small quantity of rich gas mixture is ignited through a little ignition energy, a great deal of lean gas mixture is ignited after flames are produced, and therefore the successive combustion mode of the rich gas mixture in the combustion space and the lean gas mixture in a combustion chamber is achieved. The ignition device of the natural gas engine is reasonable and simple in structure, low in ignition energy requirement, and good in durability and ignition stability.
Description
Technical field
The present invention relates to engine art, particularly a kind of ignition of natural gas engine device.
Background technique
Spark plug (spark plugs), be commonly called as nozzles, and its effect is the high voltage pulse discharge of electricity that high-voltage conducting wires (nozzles line) is sent here, and air between disruptive spark plug two electrodes produces electrical spark with the mixed gas in this cylinder that ignites.The primary condition of high-performance enginer: spark, the mixed gas mixed, high compression ratio that high-energy is stable.
Traditional natural gas engine adopts open combustion chamber usually, spark plug need to stretch in firing chamber, mixed gas in direct ignition combustion chamber, the shortcoming of this structure is: the rare mixed degree that can reach by the mixed gas in firing chamber limits, the mixed gas gas concentration is lower, make plug ignition need sizable ignition energy, need high-voltage conducting wires (nozzles line) to send the ignition energy that higher pulsed voltage improves spark plug here, and then affect durability and the Ignition Stability of spark plug, also make burning and the flame propagation of mixed gas unstable, easily catch fire.
Summary of the invention
The present invention is in order to overcome defect in above-mentioned prior art, provides a kind of rational in infrastructure simple, and the ignition energy demand is little, durability and the good ignition of natural gas engine device of Ignition Stability.
For achieving the above object, according to the invention provides a kind of ignition of natural gas engine device, comprising: spray body and spray head, and spark plug; It is cylindric spraying body, and upper end is provided with spark plug counterbore is installed, and spark plug is installed counterbore one side and offered blast tube; Spray the body lower end and offer the spray head installation counterbore be communicated with spark plug installation counterbore and blast tube; Spray head is tubular, and upper end is installed to spray head counterbore is installed, and to form between burning, lower end offers the flame spray orifice; Spark plug is arranged on spark plug and installs in counterbore, and in the lower end electrode of spark plug stretches between burning.
In technique scheme, the upper end of blast tube is by plug for seal, and the close blast tube upper outside wall stopped up laterally offers the taper gas inlet.
In technique scheme, spray between body and spray head and be provided with annular shim.
In technique scheme, the axial longitudinal section of tubular spray head lower end is " U " shape, is opened in the left and right sides of " U " oblique crank Z to the bottom, longitudinal section under the flame spray orifice is oblique.
Compared with prior art, the present invention has following beneficial effect: this ignition of natural gas engine device adopts substep combustion flame spraying technique, utilize little ignition energy to light a small amount of rich mixture, produce flame and refire a large amount of weak mixtures, with the rich mixture in realizing between burning, the combustion mode in succession of the weak mixture in firing chamber, rational in infrastructure simple, the ignition energy demand is little, durability and Ignition Stability are good, can optimize the in-cylinder combustion of motor, widen mixture strength accommodation, improve lean flammability limit, solve the problem of catching fire of puzzlement lean-combustion engine, reduce heat load, improve cylinder cap, the reliability of piston, promote the durability of spark plug.
The accompanying drawing explanation
Fig. 1 is vertical sectional structure schematic diagram of the main apparent direction of ignition of natural gas engine device of the present invention;
Fig. 2 is the horizontal sectional structure schematic diagram of overlooking direction of ignition of natural gas engine device of the present invention;
Fig. 3 be ignition of natural gas engine device of the present invention main apparent direction vertically analyse and observe the assembly structure schematic diagram;
Mark the following drawings mark thereon by reference to the accompanying drawings:
1-sprays body, 11-axial step counterbore, and the 12-blast tube, 13-stops up, the 14-gas inlet, 15-seals copper packing, 2-spray head, 21-screw thread mounting end, 22-stop lug, 23-shower nozzle, the 24-annular shim, between the 25-burning, 26-flame spray orifice, the 3-spark plug, 4-cylinder head, 41-O RunddichtringO, 42-seals copper packing, 5-swivel nut, 6-gas connection pipe.
Embodiment
Below in conjunction with accompanying drawing, a specific embodiment of the present invention is described in detail, but is to be understood that protection scope of the present invention is not subject to the restriction of embodiment.It will be appreciated that, mentioned in following mode of execution of the present invention " on ", D score, " left side ", " right side ", " front " and " reverse side " all take the direction shown in Fig. 1 as benchmark, these words that are used for limiting direction are only for convenience of explanation, do not represent the restriction to the concrete technological scheme of the present invention.
As depicted in figs. 1 and 2, ignition of natural gas engine device of the present invention adopts substep combustion flame spraying technique (FIS is Flame Injection System flame ejecting system), utilize little ignition energy to light a small amount of rich mixture, produce flame and refire a large amount of weak mixtures, with the combustion mode in succession of the rich mixture in realizing between burning, weak mixture in firing chamber.Concrete structure comprises: spray body 1 and spray head 2, and spark plug 3.
Wherein, it is cylindric spraying body 1, the upper end left side opening is provided with cylindric axial step counterbore 11, this axial step counterbore 11 is eccentric (see figure 2) left, the lower end aperture has with spark plug 3 lower ends installs the internal thread that the screw thread adaptation is spirally connected, when the lower end of spark plug 3 is installed to the lower end aperture of axial step counterbore 11, the upper end body of spark plug 3 is positioned at the upper end macropore of axial step counterbore 11, and bottom is provided with sealing copper packing 15.The upper end right side opening of cylindric injection body 1 is provided with axially extended blast tube 12, and the upper end of this blast tube 12 is by stopping up 13 sealings; Laterally offer taper gas inlet 14 near the blast tube 12 upper outside walls that stop up 13.The lower end of cylindric injection body 1 offers cylindric spray head screw-threaded counterbore is installed, and the lower end of axial step counterbore 11 and blast tube 12 is installed screw-threaded counterbore with this spray head respectively and is connected.
The tubular that spray head 2 is upper end open; This tubular spray head 2 has the axial bore of upper end enlarging, and external structure comprises: superposed screw thread mounting end 21, be positioned at the stop lug 22 at middle part and be positioned at the shower nozzle 23 of bottom.The lower end of screw thread mounting end 21 and cylindric injection body 1 offers cylindric spray head installation screw-threaded counterbore adaptation and is spirally connected, be provided with annular shim 24 between the sidewall bottom surface of the upper wall of stop lug 22 and cylindric spray head installation screw-threaded counterbore, now, the roof that the upper end-hole of the axial bore of tubular spray head 2 is installed screw-threaded counterbore by cylindric spray head forms between burning 25 with the sealing of little gap; During assembling, the lower end electrode of spark plug 3 stretches between this burning in 25, and the lower end of blast tube 12 also with between this burning 25 is communicated with.The axial longitudinal section of shower nozzle 23 is " U " shape, and the left and right sides, bottom offers respectively the flame spray orifice 26 under oblique.
As shown in Figure 3, this ignition of natural gas engine device is arranged in the mounting hole of cylinder head 4, middle part is provided with O RunddichtringO 41, and through the cooling jacket of cylinder head 4, make the flame spray orifice 26 on the shower nozzle 23 of spray head 2 stretch in firing chamber, now annular shim 24 plays between sealing combustion the effect of combustion gas in 25 and outside cooling liquid thereof.In the mounting hole that the top of this ignition of natural gas engine device is screwed to cylinder head 4 by swivel nut 5, compress, produce thus downward pressure, this ignition of natural gas engine device is pressed onto to the cylinder head bore end face, utilizes the combustion gas of sealing copper packing 42 sealed combustion chambers and the cooling liquid of cooling jacket.Gas connection pipe 6 is tightened by screw thread, and its sphere head is pressed on taper gas inlet 14, in blast tube 12, providing rock gas.Wherein, gas connection pipe 6 passes through pipeline connection with combustion gas decompression device (not shown).
During engine operation, a small amount of rock gas enters between burning 25 by blast tube 12, under the control of controller, rich mixture between the in good time ignition combustion of spark plug 3 in 25, the flame spray orifice 26 of flame from shower nozzle 23 produced is ejected in firing chamber, further the indoor weak mixture body of ignition combustion, produce pressure, promotes the piston acting.
This ignition of natural gas engine device adopts substep combustion flame spraying technique, utilize little ignition energy to light a small amount of rich mixture, produce flame and refire a large amount of weak mixtures, with the rich mixture in realizing between burning, the combustion mode in succession of the weak mixture in firing chamber, rational in infrastructure simple, the ignition energy demand is little, durability and Ignition Stability are good, can optimize the in-cylinder combustion of motor, widen mixture strength accommodation, improve lean flammability limit, solve the problem of catching fire of puzzlement lean-combustion engine, reduce heat load, improve cylinder cap, the reliability of piston, promote the durability of spark plug.
Above disclosed be only several specific embodiment of the present invention, still, the present invention is not limited thereto, the changes that any person skilled in the art can think of all should fall into protection scope of the present invention.
Claims (4)
1. an ignition of natural gas engine device, is characterized in that, comprising: spray body and spray head, and spark plug; Described injection body is cylindric, and upper end is provided with spark plug counterbore is installed, and described spark plug is installed counterbore one side and offered blast tube; Described injection body lower end offers the spray head be communicated with described spark plug installation counterbore and blast tube counterbore is installed; Described spray head is tubular, and upper end is installed to described spray head counterbore is installed, and to form between burning, lower end offers the flame spray orifice; Described spark plug is arranged on described spark plug and installs in counterbore, and in the lower end electrode of described spark plug stretches between described burning.
2. ignition of natural gas engine device according to claim 1 is characterized in that: the upper end of described blast tube is by plug for seal, and laterally offers the taper gas inlet near the blast tube upper outside wall of described obstruction.
3. ignition of natural gas engine device according to claim 1, is characterized in that: between described injection body and spray head, be provided with annular shim.
4. according to the described ignition of natural gas engine device of any one in claims 1 to 3, it is characterized in that: the axial longitudinal section of described tubular spray head lower end is " U " shape, is opened in the left and right sides of " U " oblique crank Z to the bottom, longitudinal section under described flame spray orifice is oblique.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101597311A CN103423050A (en) | 2012-05-22 | 2012-05-22 | Ignition device of natural gas engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101597311A CN103423050A (en) | 2012-05-22 | 2012-05-22 | Ignition device of natural gas engine |
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| Publication Number | Publication Date |
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| CN103423050A true CN103423050A (en) | 2013-12-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012101597311A Pending CN103423050A (en) | 2012-05-22 | 2012-05-22 | Ignition device of natural gas engine |
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| CN (1) | CN103423050A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107956576A (en) * | 2017-11-08 | 2018-04-24 | 江西洪都航空工业集团有限责任公司 | A kind of piston-engined igniter of heavy oil |
| CN112503568A (en) * | 2020-10-30 | 2021-03-16 | 华帝股份有限公司 | Self-adaptive ignition control method for gas equipment |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4864989A (en) * | 1988-06-30 | 1989-09-12 | Tice Technologies Corp. | Pre-combustion chamber spark plug and method of igniting lean fuel |
| CN2054218U (en) * | 1989-02-11 | 1990-03-07 | 张积俭 | Spark plug with precombustion chamber |
| CN2570482Y (en) * | 2002-09-29 | 2003-09-03 | 天津大学 | Natural gas engine pre-ignition chamber built-in type gas supply apparatus |
| WO2006127982A2 (en) * | 2005-05-26 | 2006-11-30 | Southwest Research Institute | Dual-spark pre-chambered spark igniter |
| CN2908805Y (en) * | 2006-04-18 | 2007-06-06 | 汤洪辉 | Precombustion chamber of gas IC engine and its gas supply device |
| CN101127438A (en) * | 2007-03-28 | 2008-02-20 | 林寿贵 | Energy saving spark plug |
| CN101545397A (en) * | 2008-03-26 | 2009-09-30 | 曼柴油机欧洲股份公司 | Internal combustion engine and method for operating an internal combustion engine |
| CN202611960U (en) * | 2012-05-22 | 2012-12-19 | 广西玉柴机器股份有限公司 | Ignition device of natural gas engine |
-
2012
- 2012-05-22 CN CN2012101597311A patent/CN103423050A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4864989A (en) * | 1988-06-30 | 1989-09-12 | Tice Technologies Corp. | Pre-combustion chamber spark plug and method of igniting lean fuel |
| CN2054218U (en) * | 1989-02-11 | 1990-03-07 | 张积俭 | Spark plug with precombustion chamber |
| CN2570482Y (en) * | 2002-09-29 | 2003-09-03 | 天津大学 | Natural gas engine pre-ignition chamber built-in type gas supply apparatus |
| WO2006127982A2 (en) * | 2005-05-26 | 2006-11-30 | Southwest Research Institute | Dual-spark pre-chambered spark igniter |
| CN2908805Y (en) * | 2006-04-18 | 2007-06-06 | 汤洪辉 | Precombustion chamber of gas IC engine and its gas supply device |
| CN101127438A (en) * | 2007-03-28 | 2008-02-20 | 林寿贵 | Energy saving spark plug |
| CN101545397A (en) * | 2008-03-26 | 2009-09-30 | 曼柴油机欧洲股份公司 | Internal combustion engine and method for operating an internal combustion engine |
| CN202611960U (en) * | 2012-05-22 | 2012-12-19 | 广西玉柴机器股份有限公司 | Ignition device of natural gas engine |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107956576A (en) * | 2017-11-08 | 2018-04-24 | 江西洪都航空工业集团有限责任公司 | A kind of piston-engined igniter of heavy oil |
| CN112503568A (en) * | 2020-10-30 | 2021-03-16 | 华帝股份有限公司 | Self-adaptive ignition control method for gas equipment |
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Application publication date: 20131204 |