CN101655029B - Vortex chamber combustion system utilizing umbrella-shaped spray - Google Patents
Vortex chamber combustion system utilizing umbrella-shaped spray Download PDFInfo
- Publication number
- CN101655029B CN101655029B CN2009103081194A CN200910308119A CN101655029B CN 101655029 B CN101655029 B CN 101655029B CN 2009103081194 A CN2009103081194 A CN 2009103081194A CN 200910308119 A CN200910308119 A CN 200910308119A CN 101655029 B CN101655029 B CN 101655029B
- Authority
- CN
- China
- Prior art keywords
- umbrella
- vortex chamber
- shaped spray
- vortex
- oil nozzle
- 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.)
- Expired - Fee Related
Links
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 39
- 239000007921 spray Substances 0.000 title claims description 50
- 238000007906 compression Methods 0.000 claims abstract description 5
- 230000006835 compression Effects 0.000 claims abstract description 5
- 230000015572 biosynthetic process Effects 0.000 claims abstract description 4
- 210000003734 kidney Anatomy 0.000 claims description 2
- 238000005507 spraying Methods 0.000 abstract description 8
- 239000000203 mixture Substances 0.000 abstract description 3
- 239000007789 gas Substances 0.000 abstract 2
- 230000002349 favourable effect Effects 0.000 abstract 1
- 230000003179 granulation Effects 0.000 abstract 1
- 238000005469 granulation Methods 0.000 abstract 1
- 230000017525 heat dissipation Effects 0.000 abstract 1
- 230000000149 penetrating effect Effects 0.000 abstract 1
- 239000004071 soot Substances 0.000 abstract 1
- 230000005855 radiation Effects 0.000 description 12
- 238000005453 pelletization Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Images
Classifications
-
- 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
Landscapes
- Combustion Methods Of Internal-Combustion Engines (AREA)
Abstract
The invention relates to a vortex chamber combustion system utilizing umbrella-shaped spraying, which belongs to the fields of formation and combustion of engine mixing gases. The vortex chamber combustion system utilizing an oil nozzle with an umbrella-shaped spraying has the structural characteristics that the center line of the oil nozzle with an umbrella-shaped spraying way is superposed with the center line of a main passage so that the air which flows into a vortex chamber from a compression stroke via the main passage turns back along the wall surface of the vortex chamber to form vortex after reaching the vicinity of the head part of the oil nozzle; the direction of the vortex is just along the diffused direction of the umbrella-shaped spraying so as to accelerate oil and gas mixture and improve the combustion. Because the characteristics of short penetrating distance, even circumferential distribution and high granulation of the umbrella-shaped spraying are reasonably utilized, the favorable mixture and combustion can be obtained at lower vortex strength, thereby reducing heat dissipation loss and throttling loss and further improving the heat efficiency of an engine. Experiments on a single-cylinder 195 diesel engine indicate that the power is improved by 10 percent, the oil consumption is reduced by 8 percent, the discharge of NOx is reduced by 10 percent and the discharge of soot is reduced by 20 percent after the vortex chamber combustion system utilizing the oil nozzle with a umbrella-shaped spraying way is adopted.
Description
Technical field
The present invention relates to a kind of vortex chamber combustion system that utilizes umbrella-shaped spray, belong to engine mixed gas and form and combustion field.
Background technique
That swirl chamber diesel has is with low cost, work is soft, noise is little, reliability is high and discharge advantages such as low; But its Economy and cold starting performance are than diesel engine with direct injection difference, and main cause is that vortex chamber's wall radiation loss is big, the channel flow loss is big, the main combustion chamber heat release is slow.The strength of vortex that increases the vortex chamber can be improved mixed gas formation, improves combustion efficiency, but can increase channel flow loss and vortex chamber's wall radiation loss simultaneously inevitably, cause the cold starting property variation, and the thermal efficiency increases not necessarily.If therefore can under lower strength of vortex, obtain good mixing gas, will produce high burning efficiency, and reduce heat radiation and flow losses, thereby improve the cold starting property and the Economy of swirl chamber diesel engine.
Summary of the invention
In order to make swirl chamber diesel engine under lower strength of vortex, obtain good mixing gas; The present invention provides a kind of vortex chamber combustion system that utilizes umbrella-shaped spray; Let in the compression stroke air-flow that gets into the vortex chamber through passage combine, form high-quality mixed gas rapidly with the umbrella-shaped spray that circumferentially is evenly distributed, pelletizing is good is ingenious.Because of not needing very high strength of vortex just can obtain good mixing gas, improve combustion efficiency, thereby less strength of vortex can be set, reduce radiation loss and restriction loss, improve cold starting property and Economy.
The technical solution adopted for the present invention to solve the technical problems is: a kind of vortex chamber combustion system that utilizes umbrella-shaped spray; It comprises that mainly a main combustion chamber, vortex chamber insert and on inserting, be provided with the main passage that is connected main combustion chamber with the vortex chamber with one, or main passage and startup hole.It also comprises a umbrella-shaped spray oil nozzle that in said vortex chamber, sprays umbrella-shaped spray; The spray cone angle α of said umbrella-shaped spray is 45～150 degree angles; The oil nozzle center line of said umbrella-shaped spray oil nozzle overlaps with the channel centerline of main passage, make in the compression stroke air that gets into the vortex chamber through the main passage arrive near the head of umbrella-shaped spray oil nozzle the back along the vortex chamber wall inflection formation eddy current.
The transverse section of said main passage is circle, ellipse, rectangular or kidney shape.
Because the eddy current direction that the wall inflection forms along the vortex chamber is just in time consistent with the dispersal direction of umbrella-shaped spray, drive these fine droplets apace with air mixing.Because the umbrella-shaped spray pelletizing is good; Diffusivity is high, and with eddy current good cooperating is arranged, and therefore can in the vortex chamber, form the relatively mixed gas of homogeneous fast; Greatly improved combustion efficiency; In design, less strength of vortex be can adopt thus,, Economy and cold starting property improved to reduce radiation loss and flow losses.
The guiding theory of technique scheme is: the Economy of improving vortex chamber combustion system needs good oil gas to mix and lower radiation loss and restriction loss; But when adopting conventional pintaux noz(zle); Because the spraying elaioleucite is bigger, often will increase swirl rate in order to improve combustion efficiency, this can cause the increase of radiation loss and restriction loss again; Be unfavorable for improving Economy on the contrary, also can make the cold starting property variation.Therefore for vortex chamber combustion system, combustion efficiency be improved, heat radiation and restriction loss certainly will be should reduced.Main passage on technique scheme is inserted is set to just in time aim at the umbrella-shaped spray oil nozzle, and the air eddy current that inflection forms after the main passage gets into the vortex chamber to arrive wall is exactly just in time consistent with the dispersal direction of umbrella-shaped spray.Umbrella-shaped spray has and runs through apart from the characteristics of lacking, circumferentially be evenly distributed, pelletizing is good; Short runs through apart from also just in time being fit to less space, vortex chamber, circumferentially is evenly distributed to make it not need too big swirl rate just can obtain good mixing gas just in time under the effect of the eddy current of its dispersal direction with the good characteristics of pelletizing; Improve combustion efficiency; And reduce radiation loss and restriction loss simultaneously, thereby significantly improve Economy, improve cold starting property.
The invention has the beneficial effects as follows: this vortex chamber combustion system that utilizes umbrella-shaped spray; Because the design of main passage direction makes the eddy motion direction just in time consistent with the dispersal direction of umbrella-shaped spray; Promote oil gas to mix thereby reasonably utilized umbrella-shaped spray to run through, improved combustion efficiency, and reduced carbon smoke exhaust apart from the characteristics of lacking, circumferentially being evenly distributed, pelletizing is good; Thereby can adopt less strength of vortex; Reduce radiation loss and flow losses, the thermal efficiency is further improved, cold starting property also is improved.Owing to the oil gas good mixing, therefore can adopt littler excess air coefficient again, thereby improve specific power, also help reducing NO
xDischarging.Experiment on single cylinder 195 diesel engines shows: power improves 10%, and oil consumption reduces by 8%, and the NOx discharging reduces by 10%, and carbon smoke exhaust reduces by 20%.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the present invention is described further.
Fig. 1 is the schematic representation of the vortex chamber combustion system that utilizes umbrella-shaped spray in a kind of tape starting hole.
Fig. 2 is the schematic representation of the vortex chamber combustion system that utilizes umbrella-shaped spray in a kind of not tape starting hole.
Fig. 3 is the oil bundle cone angle schematic representation of umbrella-shaped spray.
Among the figure: 1, cylinder liner, 2, piston, 3, main combustion chamber, 4, insert, 4a, main passage, start the hole at 4b, 4c, main passage center line, 5, cylinder liner, 6, the vortex chamber, 7, the umbrella-shaped spray oil nozzle, 7a, umbrella-shaped spray, 7b, umbrella-shaped spray oil nozzle center line; α, oil bundle cone angle.
Embodiment
The schematic representation of the vortex chamber combustion system that utilizes umbrella-shaped spray in a kind of tape starting hole shown in Figure 1.Mainly show main combustion chamber 3, vortex chamber 6 among the figure and insert 4, be provided with the main passage 4a that is connected main combustion chamber 3 with vortex chamber 6 on 4 and start hole 4b inserting.In addition, also be provided with a umbrella-shaped spray oil nozzle 7 that in vortex chamber 6, sprays umbrella-shaped spray 7a, the oil nozzle center line 7b of umbrella-shaped spray oil nozzle 7 and the channel centerline 4c of main passage 4a overlap each other.
The startup hole 4b of design on inserting; Its effect is when cold start-up, and airspeed is low in the vortex chamber 6, and part is sprayed elaioleucite can be from starting the direct higher relatively main combustion chamber 3 of air temperature that gets in the 4b of hole; In main combustion chamber 3 fire burns; Or 4a gets into vortex chamber 6 from the main passage again, promotes catching fire of vortex chamber's 6 interior mixed gass, thereby further improves cold starting performance.
Wall turns back along the vortex chamber behind the head of main passage 4a entering vortex chamber 6 arrival umbrella-shaped spray oil nozzles 7 in the compression stroke air, forms the ring-type eddy current.Because during fuel injection, the dispersal direction of umbrella-shaped spray 7a is just in time consistent near the direction of turning back the umbrella-shaped spray oil nozzle 7 with eddy current, the elaioleucite of therefore spraying can move along air swirl, in vortex chamber 6, forms the relatively mixed gas of homogeneous fast.Because umbrella-shaped spray 7a circumferentially is evenly distributed; Pelletizing is good; Just in time cooperate the air motion in the vortex chamber 6 again; Therefore do not need too big swirl rate just can obtain good mixing and burning, can design less eddy current and recently reduce radiation loss and restriction loss, thus the thermal efficiency of raising swirl chamber diesel engine.
The schematic representation of the vortex chamber combustion system that utilizes umbrella-shaped spray in a kind of not tape starting hole shown in Figure 2.Its structure and working principle and shown in Figure 1 identical, the function admirable of starting property.
Fig. 3 shows the oil bundle cone angle schematic representation of umbrella-shaped spray.The spray cone angle α of umbrella-shaped spray 7a is 45～150 degree angles.This adopts pintle nozzle different with traditional turbulence-chamber engine fully; Only need weak eddy current to cooperate with the umbrella-shaped spray 7a that circumferentially is evenly distributed, pelletizing is good; Just can obtain good inflammable mixture and perfect combustion; Thereby reduced radiation loss and restriction loss, improved the thermal efficiency of this swirl chamber diesel engine.
Claims (2)
1. vortex chamber combustion system that utilizes umbrella-shaped spray; It mainly comprises a main combustion chamber (3), a vortex chamber (6) and one insert (4); On insert (4), be provided with the main passage (4a) that a main combustion chamber (3) is connected with vortex chamber (6), or main passage (4a) and startup hole (4b); It is characterized in that: further comprising a umbrella-shaped spray oil nozzle (7) that in said vortex chamber (6), sprays umbrella-shaped spray (7a); The spray cone angle α of said umbrella-shaped spray (7a) is 45～150 degree angles; The oil nozzle center line (7b) of said umbrella-shaped spray oil nozzle (7) overlaps with the channel centerline (4c) of main passage (4a), make in the compression stroke near the air that main passage (4a) gets into vortex chamber (6) arrives the head of umbrella-shaped spray oil nozzle (7) back along the vortex chamber wall inflection formation eddy current.
2. according to the described vortex chamber combustion system that utilizes umbrella-shaped spray of claim 1, it is characterized in that: the transverse section of said main passage (4a) is circular, ellipse, rectangular or kidney shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009103081194A CN101655029B (en) | 2009-10-09 | 2009-10-09 | Vortex chamber combustion system utilizing umbrella-shaped spray |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009103081194A CN101655029B (en) | 2009-10-09 | 2009-10-09 | Vortex chamber combustion system utilizing umbrella-shaped spray |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101655029A CN101655029A (en) | 2010-02-24 |
| CN101655029B true CN101655029B (en) | 2012-04-18 |
Family
ID=41709457
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009103081194A Expired - Fee Related CN101655029B (en) | 2009-10-09 | 2009-10-09 | Vortex chamber combustion system utilizing umbrella-shaped spray |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101655029B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102425484A (en) * | 2011-11-04 | 2012-04-25 | 天津理工大学 | Method for improving natural gas engine compression ignition performance by adopting injection valve |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101482051A (en) * | 2009-01-20 | 2009-07-15 | 大连理工大学 | Multichannel swirl combustion chamber |
-
2009
- 2009-10-09 CN CN2009103081194A patent/CN101655029B/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101482051A (en) * | 2009-01-20 | 2009-07-15 | 大连理工大学 | Multichannel swirl combustion chamber |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101655029A (en) | 2010-02-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106014694B (en) | Air assisted gas injector, large-diameter gas machine precombustion chamber combustion system and method | |
| CN104595007A (en) | Straight-wall double swirl combustion chamber for diesel engine | |
| CN203146098U (en) | Combustion chamber suitable for low-temperature premixing combustion technology | |
| RU2359136C2 (en) | Internal combustion engine and method of ice fuel combustion | |
| CN204921139U (en) | Directly spout formula diesel engine burner | |
| CN101655029B (en) | Vortex chamber combustion system utilizing umbrella-shaped spray | |
| CN102996223A (en) | Premixed combustion system of diesel engine | |
| CN108468587A (en) | The Heavy End Aviation Fuel engine and aircraft of composite injection | |
| CN204140220U (en) | The piston of layering lean-combustion engine and motor and vehicle | |
| CN209399411U (en) | A kind of nozzle of combustion chamber, combustion chamber and miniature gas turbine | |
| CN114635814B (en) | Scaling spray pipe acceleration mixer for strengthening high-strength diesel oil-gas mixing | |
| CN204313313U (en) | Gas-turbine combustion chamber nozzle | |
| CN215951499U (en) | Lean oil premixing and pre-evaporating combustion chamber and aircraft engine | |
| CN108468588A (en) | Heavy End Aviation Fuel engine cylinder head assembly and aero-engine | |
| CN208763763U (en) | The dual ignition plug cylinder head assembly and aero-engine of heavy fuel burning engine | |
| CN208763745U (en) | Heavy End Aviation Fuel engine cylinder head assembly and aero-engine | |
| CN2825992Y (en) | Umbrella spray type micro-displacement oil spray nozzle | |
| CN204438188U (en) | Gas-turbine combustion chamber nozzle | |
| CN202325919U (en) | Air-warming type fuel oil volatilization heater | |
| CN208793086U (en) | The Heavy End Aviation Fuel engine and aircraft of composite injection | |
| CN202937376U (en) | Novel air-fuel mixing box used for engine | |
| CN208763798U (en) | Heavy fuel burning engine fuel injection system and aero-engine | |
| CN1811143A (en) | Swirl chamber burning system for direct injection diesel engine | |
| CN101769195B (en) | Combustion system of scattered space type direct injection diesel engine | |
| CN103590889B (en) | A kind of combustion system for two sections of Premixed combustion of directly jetting gasoline engine and combustion method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C53 | Correction of patent for invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Long Wuqiang Inventor after: Tian Jiangping Inventor after: Feng Liyan Inventor after: Feng Wenqi Inventor after: Leng Xianyin Inventor after: Sheng Kai Inventor after: Du Baoguo Inventor after: Chen Huolei Inventor before: Long Wuqiang Inventor before: Feng Wenqi Inventor before: Leng Xianyin Inventor before: Sheng Kai Inventor before: Du Baoguo Inventor before: Chen Huolei |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: LONG WUQIANG FENG WENQI LENG XIANYIN SHENG KAI DU BAOGUO CHEN HUOLEI TO: LONG WUQIANG TIAN JIANGPING FENG LIYAN FENG WENQI LENG XIANYIN SHENG KAI DU BAOGUO CHEN HUOLEI |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120418 Termination date: 20141009 |
|
| EXPY | Termination of patent right or utility model |