CN1011327B - Combustion system with double plume - Google Patents
Combustion system with double plumeInfo
- Publication number
- CN1011327B CN1011327B CN88106248A CN88106248A CN1011327B CN 1011327 B CN1011327 B CN 1011327B CN 88106248 A CN88106248 A CN 88106248A CN 88106248 A CN88106248 A CN 88106248A CN 1011327 B CN1011327 B CN 1011327B
- Authority
- CN
- China
- Prior art keywords
- piston head
- arc
- chamber
- combustion system
- boss
- 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
Links
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 31
- 238000010304 firing Methods 0.000 claims description 17
- 238000002347 injection Methods 0.000 claims description 5
- 239000007924 injection Substances 0.000 claims description 5
- 235000012489 doughnuts Nutrition 0.000 claims description 3
- 230000000295 complement effect Effects 0.000 claims description 2
- 230000007547 defect Effects 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 10
- 230000000694 effects Effects 0.000 description 4
- 239000000446 fuel Substances 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000000567 combustion gas Substances 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 238000000889 atomisation Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 238000010348 incorporation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000000275 quality assurance Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
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 present invention relates to a combustion system applied to a high-speed diesel engine. The combustion system which is provided with a shallow basin-shaped combustion chamber and is applied to the existing high-speed diesel engine has the defects of poor quality of mixed gas, greater consumption of oil and larger mechanical load. The present invention adopts a double-plume combustion system of which a combustion chamber is composed of an internal annular chamber and an external annular chamber, wherein the top of a piston is provided with a cone boss. The present invention effectively improves the quality of the mixed gas and reduces the oil consumption and the mechanical load. The present invention is mainly applied to the high-speed diesel engine and a supercharged diesel engine.
Description
The present invention relates to the combustion system used on a kind of high-speed diesel engine, it is made up of firing chamber and oil nozzle.
A kind of combustion chambers of internal combustion engines is disclosed on SU-111878A.Its purpose is to prevent the slit intrusion piston ring of combustion gas through between piston and cylinder, causes the high speed wearing and tearing of piston ring and casing wall, thereby improves the durability of motor.Its structure is that piston head has two annular concentric flanges, and is corresponding with two flanges of piston, and two annular grooves are arranged on cylinder cap; On sectional drawing, two flanges and two grooves are in echelon.When piston entered top dead center, two flanges successively entered two grooves, played the effect that prevents combustion gas intrusion piston ring.This firing chamber does not have the effect that improves mixed gas quality and combustion efficiency, does not relate to the matching problem with oil nozzle yet.
The combustion system of using on a kind of high-speed diesel engine is disclosed on " vehicular engine " magazine (nineteen eighty-two supplementary issue P37).The chamber structure of this system is that piston head is a shallow pot shape, and constitutes the firing chamber with cylinder cap and casing wall; There is following shortcoming in this combustion system:
1, the shallow pot shape firing chamber of this combustion system employing is not organized air movement specially in cylinder, mixes by even distribution and the atomization quality assurance of oil bundle in the firing chamber, when Injection Pump does not reach needed pressure, causes mixed gas quality not high, and oil consumption is big.
2, because the firing chamber is not organized air movement specially, along with the raising of rotating speed, incorporation time shortens, the mixed gas quality variation.
3, when diesel engine at high rotating speed, short stroke, when reinforcing degree is higher, mixed gas quality is poor, combustion efficiency is not high, is forced to strengthen advance angle.Increase advance angle and can only play a role to raising mixed gas quality, reduction oil consumption, but caused pressure of explosion too high, mechanical load increases.
The objective of the invention is to overcome the deficiency that above-mentioned combustion system mixed gas quality is poor, mechanical load is big, oil consumption is high, and a kind of higher mixed gas quality that has is provided, the combustion efficiency height, pressure of explosion is lower, the combustion system that is easy to promote the use of.
Technical solution of the present invention is, adopt combustion system with double plume, firing chamber and oil nozzle that the space that it is surrounded by piston head, cylinder cap and casing wall constitutes are formed, piston head has inside and outside two doughnuts, it is characterized in that: piston head outer circular chamber bottom surface circular arc and interior ring casing bottom surface circular arc intersect the arc ridge that forms projection; The center, firing chamber is a conical boss of clipping the vertex of a cone, and this boss end face is lower than piston-top surface, and the boss conical surface and interior ring casing bottom surface circular arc are tangent; The angle and the inside-and-outside ring chamber of the oil bundle of injection hole on injection nozzle ejection are complementary; Make the oil bundle form the opposite plume of rotation direction in the inside-and-outside ring chamber.Mistress's diameter d 1=(0.66-0.83) D, inner room diameter d 2=(0.4-0.66) D, mistress bottom surface radius of arc R1=(0.05-0.093) D, inner room bottom surface radius of arc R2=(0.04-0.066) D, mistress's minimum point is apart from the distance H 1=(0.06-0.1 of piston head) D, the inner room minimum point is apart from the distance H 2=(0.08-0.12 of piston head) D, pointed arc ridge is apart from the distance H of piston head
3=(0.05-0.08) D, the diameter d 3=(0.05-0.08 of conical boss) D, the cone angle of conical boss=120 °-150 °.
The working principle of this combustion system is, the oil bundle is after spraying into the firing chamber, and at the two eddy current of inside and outside two indoor formation, two eddy current rotation directions are opposite, can make full use of the air in the firing chamber, quickened the mixing and the burning of main combustion period.Projection arc ridge has played the pure fuel of powder, has quickened the formation of high quality mixed gas.The shift in position of projection arc ridge can play the control effect of stagnant burning phase.The distribution of fuel is fixed by the air quantity in the inside-and-outside ring chamber, has guaranteed that fuel mixes with the timely of air.
The present invention has compared with prior art obtained following good effect:
1, can form high-quality mixed gas, improve combustion position, reduce oil consumption.
2,, thereby can dwindle fuel supply advance angle because this combustion system can form high-quality mixed gas at short notice.The firing chamber of this system increases than shallow pot shape combustion chamber volume, has reduced compression ratio.Advance angle dwindle reduction with compression ratio, maximum explosive pressure and voltage rise rate are descended, reduced mechanical load.
3, this combustion system has reduced the processing technology requirement to oil nozzle, the oil bundle angle of oil nozzle ejection can 140 °-160 ° this, for promoting the use of of this burning created advantage.
4, this combustion system only need change the structure of piston head, and the structure that does not need to change other parts is easy to promote the use of.
5, under the identical situation of combustion chamber volume, the firing chamber of adopting this system can increase the combustion chamber openings diameter, reduces combustion-chamber depth, and this helps reducing heat load, is applicable to the high supercharged diesel engine of strengthening.
The drawing of accompanying drawing is described as follows:
Fig. 1 is the structural drawing of firing chamber.
Fig. 2 is the plan view of piston head.
The present invention will be described in further detail in conjunction with the accompanying drawings.
In Fig. 1, between cylinder 2 and the cylinder cap 4 seal ring 3 is housed, air valve 5 and oil nozzle 6 are housed on the cylinder cap.The top structure of piston 1 is, there is a conical boss 7 at the center, table top is lower than the piston head plane, the conical surface and inner room bottom surface circular arc are tangent, inner room bottom surface circular arc and mistress bottom surface circular arc intersect, form protruding arc ridge 8, protruding arc ridge is divided into inside and outside two doughnuts, mistress bottom surface circular arc and piston head Plane intersects to the firing chamber.Circle will be accomplished during fabrication in the top of projection arc ridge.
Fig. 2 has represented the plan structure of piston head.In order to prevent the interference of piston and air valve, be provided with four uniform valve pits 9 at piston head.
Symbolic significance and value in the accompanying drawing are as follows:
D is a piston diameter.
Mistress's diameter D1=(0.66-0.83) D, inner room diameter d 2=(0.4-0.66) D
Conical boss diameter d 3=(0.05-0.08) D
Mistress's minimum point is apart from the distance H 1=(0.06-0.1 of piston head) D
The inner room minimum point is apart from the distance H 2=(0.08-0.12 of piston head) D
Pointed arc ridge is apart from the distance H 3=(0.05-0.08 of piston head) D
Mistress bottom surface radius of arc R1=(0.05-0.093) D
Inner room bottom surface radius of arc R2=(0.04-0.066) D
The cone angle of circular cone=120 °-150 °
On the 6V150 diesel engine, when
d1＝0.8D d2＝0.533D d3＝0.06D
H1＝0.086D H2＝0.106D H3＝0.06D
R1＝0.06D R2＝0.053D α＝135°
Best results.
The oil nozzle of the firing chamber coupling that is limited with the said structure size, the oil bundle angle of its spray orifice ejection can both guarantee that the oil bundle forms the opposite plume of rotation direction in the inside-and-outside ring chamber between 140-160.The position of spray orifice is on the The combustion chamber bottom plane.
Claims (2)
1, a kind of combustion system with double plume, by piston head, firing chamber that the space that cylinder cap and casing wall surround constitutes and oil nozzle are formed, piston head has inside and outside two doughnuts, it is characterized in that: piston head outer circular chamber bottom surface circular arc and interior ring casing bottom surface circular arc intersect the arc ridge that forms projection, the center, firing chamber is a conical boss of clipping the vertex of a cone, this boss end face is lower than piston-top surface, the boss conical surface and interior ring casing bottom surface circular arc are tangent, the angle and the inside-and-outside ring chamber of the oil bundle of injection hole on injection nozzle ejection are complementary, and make the oil bundle form the opposite plume of rotation direction in the inside-and-outside ring chamber.
2, according to the described combustion system with double plume of claim 1, it is characterized in that: D mistress's diameter d 1=(0.66-0.83), inner room diameter d 2=(0.4-0.66) D, mistress bottom surface radius of arc R1=(0.05-0.093) D, inner room bottom surface radius of arc R2=(0.04-0.066) D, mistress's minimum point is apart from the distance H 1=(0.06-0.1 of piston head) D, the inner room minimum point is apart from the distance H 2=(0.08-0.12 of piston head) D, pointed arc ridge is apart from the distance H of piston head
3=(0.05-0.08) D, the diameter d 3=(0.05-0.08 of conical boss) D, the cone angle of conical boss=120 °-150 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN88106248A CN1011327B (en) | 1988-08-31 | 1988-08-31 | Combustion system with double plume |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN88106248A CN1011327B (en) | 1988-08-31 | 1988-08-31 | Combustion system with double plume |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1040851A CN1040851A (en) | 1990-03-28 |
| CN1011327B true CN1011327B (en) | 1991-01-23 |
Family
ID=4834160
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN88106248A Expired CN1011327B (en) | 1988-08-31 | 1988-08-31 | Combustion system with double plume |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1011327B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1332126C (en) * | 2004-08-31 | 2007-08-15 | 侯德洋 | Combustion system and method for self adaption controllable heat premixing direct jet type diesel engine |
| CN101737145B (en) * | 2009-11-06 | 2011-07-20 | 北京理工大学 | Split swirl combustion chamber |
| CN105715356B (en) * | 2016-01-20 | 2018-07-20 | 北京理工大学 | A kind of Split swirl combustion chamber |
| CN111648876A (en) * | 2020-06-15 | 2020-09-11 | 江苏科技大学 | High-low type double vortex chamber double-reducing combustion chamber |
| CN112682163A (en) * | 2020-12-22 | 2021-04-20 | 中国北方发动机研究所(天津) | Layered anti-detonation combustion chamber based on deep valve pit |
| CN113586227A (en) * | 2021-08-25 | 2021-11-02 | 中国第一汽车股份有限公司 | Combustion chamber structure of gasoline engine and gasoline engine |
| CN114320641B (en) * | 2022-03-11 | 2022-06-21 | 潍柴动力股份有限公司 | Engine combustion system, control method and engine |
-
1988
- 1988-08-31 CN CN88106248A patent/CN1011327B/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CN1040851A (en) | 1990-03-28 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C13 | Decision | ||
| GR02 | Examined patent application | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |