CN104153869A - Combustor of gas machine - Google Patents
Combustor of gas machine Download PDFInfo
- Publication number
- CN104153869A CN104153869A CN201410394481.9A CN201410394481A CN104153869A CN 104153869 A CN104153869 A CN 104153869A CN 201410394481 A CN201410394481 A CN 201410394481A CN 104153869 A CN104153869 A CN 104153869A
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- CN
- China
- Prior art keywords
- straight section
- firing chamber
- section
- tail end
- arc
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
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- 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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- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
The invention discloses a combustor of a gas machine. The combustor is arranged at the head of a piston and comprises a bottom surface and a side wall. The side wall is inclined outwards relative to the bottom surface and is formed by a plurality of diversion walls connected in sequence. Each diversion wall comprises a radial straight section, a transition straight section, a circular arc section and a radial arc section, wherein the top end of the radial straight section protrudes towards the center of the combustor; the top end of the transition straight section is connected with the tail end of the radial straight section; the circular arc section bends inwards, and the top end of the circular arc section is connected with the tail end of the transition straight section; the top end of the radial arc section is connected with the tail end of the circular arc section; the tail end of the radial arc section protrudes towards the center of the combustor. The tail end of the radial arc section of each diversion wall and the top end of the radial straight section of the corresponding adjacent diversion wall are in circular arc connection, so that radial protrusions are formed. By means of the combustor, reasonable airflow motion can be organized, the combustion turbulence intensity and the spreading speed of combusting flame are optimized, engine fuel can combust sufficiently, emission pollution is reduced, and the emission grade of an engine is increased.
Description
Technical field
The present invention relates to field of internal combustion engine, particularly a kind of firing chamber of gas machine.
Background technique
At present, the pollution problem of nature obtains all the more people and payes attention to, and associated drain Laws & Regulations is corresponding upgraded and perfect also.In order to meet the provisions of laws and regulations of discharge, the pollution of minimizing to nature, generally take to install triple-effect catalytic unit equivalent proportion combustion technology additional at common gases machine chamber structure (U-shaped structure), yet, the deficiency of equivalent proportion burning clearly, because combustion temperature is too high on the one hand, heat load is larger, easily there is pinking, compression ratio increase rate is limited, adopt supercharging technology further to improve the insufficient space of engine power, because the pumping loss causing due to air inlet restriction under partial load condition is too high on the other hand, Economy is poor, therefore in order better to utilize the technology of rock gas equivalent proportion burning, need to coordinate reduction pumping loss and the combustion temperature of loading greatly such as EGR and miller cycle, and the diluting effect of EGR and rock gas self kindling temperature is high, the slow feature of rate of burning is all unfavorable for the fast propagation of catch fire stable and the flame of rock gas self.So the chamber structure of common gases machine (U-shaped structure) has been difficult to realize further perfect combustion, to reduce motor discharge.
The information that is disclosed in this background technique part is only intended to increase the understanding to general background of the present invention, and should not be regarded as admitting or imply that in any form this information structure has been the known prior art of persons skilled in the art.
Summary of the invention
The object of the present invention is to provide a kind of firing chamber of gas machine, can organize rational air motion, the velocity of propagation of Optimizing Combustion turbulence intensity, combustion flame, makes motor fuel be able to sufficient burning, reduces exhaust emission, improves motor levels of emissions.
For achieving the above object, the invention provides a kind of firing chamber of gas machine, this firing chamber is located at piston crown, and this firing chamber comprises: bottom surface; Sidewall, it is with respect to the outward-dipping setting in bottom surface, and sidewall consists of some training walls that connect successively, and training wall comprises: straight section radially, its head end is to the central protuberance of firing chamber; Transition straight section, its head end is connected with the tail end of straight section radially; Arc section, it curves inwardly, and the head end of arc section is connected with the tail end of transition straight section; Segmental arc radially, its head end is connected with the tail end of arc section, and radially the tail end of segmental arc to the central protuberance of firing chamber; Wherein the head end of the tail end of the radially segmental arc of training wall and the radially straight section of adjacent training wall adopts circular arc to be connected and then forms radial protrusion.
Preferably, the fillet radius that circular arc connects is 3.5-6mm.
Preferably, the radius of arc of arc section is greater than 8mm.
Preferably, the lower limb of the top edge of training wall and the end face of piston crown and training wall and bottom surface all adopt round-corner transition.
Preferably, the head end of transition straight section adopts circular arc to be connected with the tail end of straight section radially.
Preferably, sidewall is connected in sequence by four training walls.
Compared with prior art, the present invention has following beneficial effect: this firing chamber adopts some training walls to form the sidewall of firing chamber, can organize rational air motion, the velocity of propagation of Optimizing Combustion turbulence intensity and combustion flame, the mechanisms such as the turbulent flow of enhancing combustion gas, collision, strengthen the abundant burning of fuel, and strengthening motor fuel fully burns, reduce exhaust emission, improve motor emission standard.
Accompanying drawing explanation
Fig. 1 is according to the cross-sectional schematic of the firing chamber of gas machine of the present invention;
Fig. 2 is according to the schematic top plan view of the firing chamber of gas machine of the present invention.
Main description of reference numerals:
1-piston crown, 2-bottom surface, 3-sidewall, 31-is straight section radially, 32-transition straight section, 33-arc section, 34-is segmental arc radially, 35-radial protrusion, 4-end face.
Embodiment
Below in conjunction with accompanying drawing, the 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.
Unless separately there is other clearly to represent, otherwise in whole specification and claims, term " comprises " or its conversion was stated being understood to include as " comprising " or " including " etc. element or constituent element, and do not get rid of other element or other constituent element.
As shown in Figures 1 and 2, according to the firing chamber of a kind of gas machine of the specific embodiment of the invention, this firing chamber is located at piston crown 1, this firing chamber comprises bottom surface 2 and sidewall 3, wherein sidewall 3 is with respect to the outward-dipping setting in bottom surface 2, adopt the chamber structure of the open type of 90 ° of the sidewall 3 of firing chamber and 2 one-tenth of the bottom surfaces > of firing chamber, sidewall 3 consists of some training walls that connect successively, training wall comprises radially straight section 31, transition straight section 32, arc section 33 and radially segmental arc 34, particularly, radially the head end of straight section 31 is to the central protuberance of firing chamber, the head end of transition straight section 32 is connected with the tail end of straight section 31 radially, arc section 33 curves inwardly, and the head end of arc section 33 is connected with the tail end of transition straight section 32, radially the head end of segmental arc 34 is connected with the tail end of arc section 33, and radially the tail end of segmental arc 34 is to the central protuberance of firing chamber, now, the tail end of the radially segmental arc 31 of training wall adopts circular arc to be connected with the head end of the radially straight section 34 of adjacent training wall and then forms radial protrusion 35, like this, the sidewall being connected in sequence by some training walls forms dish, wherein, the fillet radius that circular arc connects can be 3.5-6mm, the radius of arc of arc section 33 is greater than 8mm, also have, the head end of transition straight section 31 adopts circular arc to be connected with the tail end of straight section 32 radially.In a word, the head and the tail of each linkage section of training wall adopt level and smooth transition to connect, and arc section all adopts tangent mode to be connected with straightway or arc section with arc section.In addition, the end face 4 of the top edge of training wall and piston crown 1 and the lower limb of training wall and bottom surface 2 all adopt round-corner transition, like this, training wall can couple together the bottom surface of the end face of firing chamber 4 and firing chamber 2, and then guarantee that whole firing chamber becomes flow guide structure, impel combustion gas to produce stronger air motion in combustion process, the mechanisms such as the turbulent flow of enhancing combustion gas, collision, strengthen the abundant burning of fuel.
In the present embodiment, sidewall 3 adopts four sections of training walls to form, four sections of training walls form centrosymmetric structure (non-axisymmetric), after mixing with air, combustion gas along training wall, rotates to form turbulent flow in this firing chamber of son, the design of radial protrusion 35, the mechanical collision that increases mixed gas, further promotes combustion gas mixing effect.
In a word, this firing chamber adopts unlimited dish, and the sidewall of firing chamber has some training walls, can organize rational air motion, the velocity of propagation of Optimizing Combustion turbulence intensity and combustion flame, strengthens motor fuel and fully burns, reduce exhaust emission, improve motor emission standard.
The aforementioned description to concrete exemplary of the present invention is for the object with illustration is described.These descriptions not want the present invention to be defined as disclosed precise forms, and obviously, according to above-mentioned instruction, can much change and change.Exemplary embodiment is selected and the object described is to explain certain principles of the present invention and practical application thereof, thereby made those skilled in the art can realize and utilize various exemplary of the present invention and various selection and change.Scope of the present invention is intended to be limited by claims and equivalents thereof.
Claims (6)
1. a firing chamber for gas machine, this firing chamber is located at piston crown, it is characterized in that, and this firing chamber comprises:
Bottom surface; And
Sidewall, it is with respect to the outward-dipping setting in described bottom surface, and described sidewall consists of some training walls that connect successively, and described training wall comprises:
Straight section radially, its head end is to the central protuberance of firing chamber;
Transition straight section, its head end is connected with the tail end of described radially straight section;
Arc section, it curves inwardly, and the head end of described arc section is connected with the tail end of described transition straight section; And
Segmental arc radially, its head end is connected with the tail end of described arc section, and the tail end of described radially segmental arc is to the central protuberance of firing chamber;
The tail end of the radially segmental arc of wherein said training wall adopts circular arc to be connected with the head end of the radially straight section of adjacent training wall and then forms radial protrusion.
2. the firing chamber of gas machine according to claim 1, is characterized in that, the fillet radius that described circular arc connects is 3.5-6mm.
3. the firing chamber of gas machine according to claim 1, is characterized in that, the radius of arc of described arc section is greater than 8mm.
4. the firing chamber of gas machine according to claim 1, is characterized in that, lower limb and the described bottom surface of the top edge of described training wall and the end face of described piston crown and described training wall all adopt round-corner transition.
5. the firing chamber of gas machine according to claim 1, is characterized in that, the head end of described transition straight section adopts circular arc to be connected with the tail end of described radially straight section.
6. the firing chamber of gas machine according to claim 1, is characterized in that, described sidewall is connected in sequence by four training walls.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410394481.9A CN104153869A (en) | 2014-08-12 | 2014-08-12 | Combustor of gas machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410394481.9A CN104153869A (en) | 2014-08-12 | 2014-08-12 | Combustor of gas machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104153869A true CN104153869A (en) | 2014-11-19 |
Family
ID=51879474
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410394481.9A Pending CN104153869A (en) | 2014-08-12 | 2014-08-12 | Combustor of gas machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104153869A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06159066A (en) * | 1992-11-26 | 1994-06-07 | Avl Ges Verbrennungskraftmas & Messtech Mbh | Internal combustion engine |
| JP2004270476A (en) * | 2003-03-06 | 2004-09-30 | Honda Motor Co Ltd | Direct-injection internal combustion engine |
| CN201284699Y (en) * | 2008-06-12 | 2009-08-05 | 吉林大学 | Piston with combustion chamber used in natural gas engine |
| CN104033234A (en) * | 2014-06-23 | 2014-09-10 | 天津大学 | Diversion-wall-shaped quick burning chamber of natural gas engine |
| CN203978597U (en) * | 2014-08-12 | 2014-12-03 | 广西玉柴机器股份有限公司 | The firing chamber of gas machine |
-
2014
- 2014-08-12 CN CN201410394481.9A patent/CN104153869A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06159066A (en) * | 1992-11-26 | 1994-06-07 | Avl Ges Verbrennungskraftmas & Messtech Mbh | Internal combustion engine |
| JP2004270476A (en) * | 2003-03-06 | 2004-09-30 | Honda Motor Co Ltd | Direct-injection internal combustion engine |
| CN201284699Y (en) * | 2008-06-12 | 2009-08-05 | 吉林大学 | Piston with combustion chamber used in natural gas engine |
| CN104033234A (en) * | 2014-06-23 | 2014-09-10 | 天津大学 | Diversion-wall-shaped quick burning chamber of natural gas engine |
| CN203978597U (en) * | 2014-08-12 | 2014-12-03 | 广西玉柴机器股份有限公司 | The firing chamber of gas machine |
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| C10 | Entry into substantive examination | ||
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20141119 |
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| WD01 | Invention patent application deemed withdrawn after publication |