CN202611960U - Ignition device of natural gas engine - Google Patents
Ignition device of natural gas engine Download PDFInfo
- Publication number
- CN202611960U CN202611960U CN 201220231018 CN201220231018U CN202611960U CN 202611960 U CN202611960 U CN 202611960U CN 201220231018 CN201220231018 CN 201220231018 CN 201220231018 U CN201220231018 U CN 201220231018U CN 202611960 U CN202611960 U CN 202611960U
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- China
- Prior art keywords
- spark plug
- natural gas
- gas engine
- counterbore
- spraying
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- Expired - Fee Related
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- Ignition Installations For Internal Combustion Engines (AREA)
- Combustion Methods Of Internal-Combustion Engines (AREA)
Abstract
The utility model discloses an ignition device of a natural gas engine. The ignition device comprises a spraying body, a spraying head and a spark plug. The spraying body is cylindrical, a spark plug installation countersink is arranged at the upper end of the spraying body, a gas channel is arranged on one side of the spark plug installation countersink, a spraying head installation countersink communicated with the spark plug installation countersink and the gas channel is arranged at the lower end of the spraying body, the spraying head is tubular, the upper end of the spraying head is installed in the spraying head installation countersink so as to form a combustion chamber, a flame spraying hole is arranged at the lower end of the spraying head, the spark plug is installed in the spark plug installation countersink, and an electrode at the lower end of the spark plug extends into the combustion chamber. The ignition device of the natural gas engine adopts the step combustion flame spraying technology, small ignition energy is utilized to ignite a small amount of rich mixture, generated flame is used for igniting a large amount of thin mixture so as to achieve a successive combustion mode of the rich mixture and the thin mixture in the combustion chamber, and the ignition device of the natural gas engine is reasonable and simple in structure, small in ignition energy requirements and good in durability and ignition stability.
Description
Technical field
The utility model relates to engine art, particularly a kind of natural gas engine ignition mechanism.
Background technique
Spark plug (spark plugs) is commonly called as nozzles, and its effect is a high voltage pulse discharge of electricity of sending high-voltage conducting wires (nozzles line) 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 that mixes, high compression ratio that high-energy is stable.
The traditional natural gas motor adopts open combustion chamber usually; Spark plug need stretch in the firing chamber, the mixed gas in the direct ignition combustion chamber, and the shortcoming of this structure is: the rare mixed limits that can reach by the mixed gas in the firing chamber; The mixed gas gas concentration is lower; Make plug ignition need sizable ignition energy, promptly need high-voltage conducting wires (nozzles line) to send the ignition energy that higher pulsed voltage improves spark plug here, and then influence the durability and the Ignition Stability of spark plug; Make that also the burning and the flame propagation of mixed gas are unstable, easy catching fire.
The model utility content
The utility model is in order to overcome defective in the above-mentioned existing technology, provides a kind of rational in infrastructure simple, and the ignition energy demand is little, durability and the good natural gas engine ignition mechanism of Ignition Stability.
For achieving the above object, according to the utility model a kind of natural gas engine ignition mechanism is provided, comprising: spray body and spray head, and spark plug; It is cylindric spraying body, and the 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 that is communicated with spark plug installation counterbore and blast tube; Spray head is a tubular, and the upper end is installed to spray head counterbore is installed, and to form between burning, the lower end offers the flame spray orifice; Spark plug is installed in spark plug and installs in the counterbore, and in the lower end electrode of spark plug stretches between burning.
In the technique scheme, the upper end of blast tube is through plug for seal, and laterally offers the taper gas inlet near the blast tube upper outside wall that stops up.
In the technique scheme, be provided with annular shim between injection body and the spray head.
In the technique scheme, the axial longitudinal section of tubular spray head lower end is " U " shape, the oblique left and right sides of " U " oblique crank Z to the bottom, longitudinal section that be opened in down of flame spray orifice.
Compared with prior art, the utlity model has following beneficial effect: this natural gas engine ignition mechanism adopts substep combustion flame spraying technique, utilizes little ignition energy to light a spot 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 weak mixture in the firing chamber, rational in infrastructure simple; The ignition energy demand is little, and 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 the reliability of cylinder cap, piston, promote the durability of spark plug.
Description of drawings
Fig. 1 is vertical sectional structure schematic representation of main apparent direction of the natural gas engine ignition mechanism of the utility model;
Fig. 2 is the horizontal sectional structure schematic representation of overlooking direction of the natural gas engine ignition mechanism of the utility model;
Fig. 3 be the utility model the natural gas engine ignition mechanism main apparent direction vertically analyse and observe the assembly structure schematic representation;
In conjunction with the accompanying drawing following reference character of mark above that:
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, 3-spark plug, 4-cylinder head; The 41-O RunddichtringO, 42-seals copper packing, 5-swivel nut, 6-gas connection pipe.
Embodiment
Below in conjunction with accompanying drawing, the embodiment of the utility model is described in detail, but the protection domain that is to be understood that the utility model does not receive the restriction of embodiment.It will be appreciated that; Mentioned in the following mode of execution of the utility model " on ", D score, " left side ", " right side ", " front " and " reverse side " be benchmark with direction shown in Figure 1 all; These words that are used for limiting direction only are for the ease of explanation, do not represent the restriction to the concrete technological scheme of the utility model.
As depicted in figs. 1 and 2; The natural gas engine ignition mechanism of the utility model adopts substep combustion flame spraying technique (FIS is a Flame Injection System jet of flame system); Promptly utilize little ignition energy to light a spot 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 weak mixture in the firing chamber.Concrete structure comprises: spray body 1 and spray head 2, and spark plug 3.
Wherein, It is cylindric spraying body 1, and the left side, upper end offers cylindric axial step counterbore 11, the eccentric (see figure 2) of this axial step counterbore 11 left; The lower end aperture has with spark plug 3 lower ends installs the adaptive internal thread that is spirally connected of screw thread; When the lower end of spark plug 3 was installed to the lower end aperture of axial step counterbore 11, the upper end body of spark plug 3 was positioned at the upper end macropore of axial step counterbore 11, and the bottom is provided with sealing copper packing 15.The right side, upper end of cylindric injection body 1 offers axially extended blast tube 12, and the upper end of this blast tube 12 is through stopping up 13 sealings; Blast tube 12 upper outside walls near stopping up 13 laterally offer taper gas inlet 14.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.
As shown in Figure 3; This natural gas engine ignition mechanism is arranged in the mounting hole of cylinder head 4; The middle part is provided with O RunddichtringO 41; And pass the cooling jacket of cylinder head 4, and making that the flame spray orifice 26 on the shower nozzle 23 of spray head 2 stretches in the firing chamber, this moment, annular shim 24 played between sealing combustion combustion gas and the effect of outside cooling liquid thereof in 25.The top of this natural gas engine ignition mechanism is screwed to by swivel nut 5 in the mounting hole of cylinder head 4 and compresses; Produce downward pressure thus; Be pressed onto the cylinder head bore end face to this natural gas engine ignition mechanism, utilize the combustion gas of sealing copper packing 42 sealed combustion chambers and the cooling liquid of cooling jacket.Gas connection pipe 6 is by screwed, and its sphere head is pressed on the taper gas inlet 14, in the blast tube 12 rock gas being provided.Wherein, gas connection pipe 6 passes through pipeline connection with combustion gas decompression device (not shown).
During engine operation; A spot of rock gas gets between burning 25 through blast tube 12, under the control of controller, and the rich mixture between the in good time ignition combustion of spark plug 3 in 25; The flame that produces is ejected in the firing chamber from the flame spray orifice 26 on the shower nozzle 23; Further the indoor weak mixture body of ignition combustion produces pressure, promotes the piston acting.
This natural gas engine ignition mechanism adopts substep combustion flame spraying technique, utilizes little ignition energy to light a spot of rich mixture, produces flame and refires a large amount of weak mixtures; With the rich mixture in realizing between burning, the combustion mode in succession of weak mixture in the 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 the reliability of cylinder cap, piston, promote the durability of spark plug.
More than the disclosed several specific embodiments that are merely the utility model, still, the utility model is not limited thereto, any those skilled in the art can think variation all should fall into the protection domain of the utility model.
Claims (4)
1. a natural gas engine ignition mechanism is characterized in that, comprising: spray body and spray head, and spark plug; Said injection body is cylindric, and the upper end is provided with spark plug counterbore is installed, and said spark plug is installed counterbore one side and offered blast tube; Said injection body lower end offers the spray head that is communicated with said spark plug installation counterbore and blast tube counterbore is installed; Said spray head is a tubular, and the upper end is installed to said spray head counterbore is installed, and to form between burning, the lower end offers the flame spray orifice; Said spark plug is installed in said spark plug and installs in the counterbore, and in the lower end electrode of said spark plug stretches between said burning.
2. natural gas engine ignition mechanism according to claim 1 is characterized in that: the upper end of said blast tube is through plug for seal, and laterally offers the taper gas inlet near the blast tube upper outside wall of said obstruction.
3. natural gas engine ignition mechanism according to claim 1 is characterized in that: be provided with annular shim between said injection body and the spray head.
4. according to each described natural gas engine ignition mechanism in the claim 1 to 3; It is characterized in that: the axial longitudinal section of said tubular spray head lower end is " U " shape, the oblique left and right sides of " U " oblique crank Z to the bottom, longitudinal section that be opened in down of said flame spray orifice.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220231018 CN202611960U (en) | 2012-05-22 | 2012-05-22 | Ignition device of natural gas engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220231018 CN202611960U (en) | 2012-05-22 | 2012-05-22 | Ignition device of natural gas engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202611960U true CN202611960U (en) | 2012-12-19 |
Family
ID=47345666
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220231018 Expired - Fee Related CN202611960U (en) | 2012-05-22 | 2012-05-22 | Ignition device of natural gas engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202611960U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103423050A (en) * | 2012-05-22 | 2013-12-04 | 广西玉柴机器股份有限公司 | Ignition device of natural gas engine |
-
2012
- 2012-05-22 CN CN 201220231018 patent/CN202611960U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103423050A (en) * | 2012-05-22 | 2013-12-04 | 广西玉柴机器股份有限公司 | Ignition device of natural gas engine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121219 Termination date: 20160522 |