CN2036575U - Double-cyclone combustion system - Google Patents
Double-cyclone combustion system Download PDFInfo
- Publication number
- CN2036575U CN2036575U CN 88213575 CN88213575U CN2036575U CN 2036575 U CN2036575 U CN 2036575U CN 88213575 CN88213575 CN 88213575 CN 88213575 U CN88213575 U CN 88213575U CN 2036575 U CN2036575 U CN 2036575U
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- China
- Prior art keywords
- piston head
- garden
- combustion system
- combustion
- mistress
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- 238000002485 combustion reaction Methods 0.000 title claims abstract description 29
- 238000010304 firing Methods 0.000 claims description 14
- 235000012489 doughnuts Nutrition 0.000 claims description 5
- 239000000203 mixture Substances 0.000 abstract 2
- 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 3
- 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
- 238000000889 atomisation 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
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 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
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- Combustion Methods Of Internal-Combustion Engines (AREA)
Abstract
The utility model relates to a combustion system used on the high-speed diesel engine. A shallow basin-shaped combustion chamber combustion system is arranged on the existing high-speed diesel engine, having the problems of unsound mixture condition relatively great oil consumption, and larger mechanical load. The utility model adopts the double-cyclone combustion system, whose combustion-chamber is composed of an internal annular chamber and an external annular chamber. A conic lug boss is arranged in the centre of the piston top. The utility model, which is suitable for the high-speed diesel engine and supercharged diesel, has the advantages of improving the mixture quality and lowering the oil consumption and mechanical load.
Description
The utility model relates to the combustion system of using on a kind of high-speed diesel engine, and 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; Corresponding with two flanges of piston, 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 purpose of this utility model 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 to have a higher mixed gas quality, combustion efficiency height, pressure of explosion lower and provide, the combustion system that is easy to promote the use of.
Technical solution of the present utility model is, adopts combustion system with double plume, and firing chamber and oil nozzle that the space that it is surrounded by piston head, cylinder cap and casing wall constitutes are formed.Its special way is: piston head has inside and outside two doughnuts, and mistress bottom surface garden arc and garden, inner room bottom surface arc intersect the pointed arc ridge of formation, and pointed arc ridge is divided into two doughnuts with piston head, and there is garden awl boss at the piston head center.
Mistress's diameter d 1=(0.66～0.83) D(D is a piston diameter), inner room diameter d 2=(0.4～0.66) D, the lonely radius R 1=(0.05 in garden, mistress bottom surface～0.093) D, garden, inner room bottom surface arc radius R 2=(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 distance H 2=(0.08-0.10 of inner room perigee distance piston head) D, pointed arc ridge is apart from the distance H 3=(0.05-0.08 of piston head) D, the diameter d 3=(0.05-0.08 of garden awl boss) D, cone angle=120 of garden awl boss °-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.Pointed arc ridge has played the pure fuel of powder, has quickened the formation of high quality mixed gas.The shift in position of pointed arc ridge can play the effect of control delay period.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 utility model is 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, and the oil bundle angle of oil nozzle ejection can be between 140 °-160 °, 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 utility model will be further described 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 taper boss 7 at the center, at the bottom of the table top in the piston head plane, the conical surface and garden, inner room bottom surface arc are tangent, inner room bottom surface garden arc and garden, mistress bottom surface arc intersect, form pointed arc ridge 8, pointed arc ridge is divided into inside and outside two doughnuts, mistress bottom surface garden arc and piston head Plane intersects to the firing chamber.
Fig. 2 has represented the plan structure of piston head, interferes in order to prevent piston and air valve, is 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 d 1=(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=(0.08-0.10 of piston head) D
Pointed arc ridge is apart from the distance H 3=(0.05-0.08 of piston head) D
Garden, mistress bottom surface arc radius R 1=(0.05-0.093) D
Garden, inner room bottom surface arc radius R 2=(0.04-0.066) D
Cone angle=120 of garden awl °-150 °
On the 6V150 diesel engine, when
d1＝0.8D d2＝0.533D d3＝0.06D
H1＝0.106D H2＝0.086D H3＝0.06D
R1＝0.06D R2＝0.053D α＝135°
Best results.
Claims (2)
1, a kind of combustion system with double plume, firing chamber and oil nozzle that the space that is surrounded by piston head, cylinder cap and casing wall constitutes are formed, it is characterized in that: piston head 1 has inside and outside two doughnuts, garden, mistress bottom surface is lonely to form pointed lonely ridge 8 with lonely intersecting of garden, inner room bottom surface, pointed lonely ridge is divided into two doughnuts with piston head, and there is garden awl boss 7 at the piston head center.
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, garden, mistress bottom surface arc radius R 1=(0.05-0.093) D, garden, inner room bottom surface arc radius R 2=(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=(0.08-0.10 of piston head) D, pointed arc ridge is apart from the distance H 3=(0.05-0.08 of piston head) D, the diameter d 3=(0.05-0.08 of garden awl boss) D, cone angle=120 of garden awl boss °-150 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88213575 CN2036575U (en) | 1988-08-31 | 1988-08-31 | Double-cyclone combustion system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88213575 CN2036575U (en) | 1988-08-31 | 1988-08-31 | Double-cyclone combustion system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2036575U true CN2036575U (en) | 1989-04-26 |
Family
ID=4846661
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 88213575 Withdrawn CN2036575U (en) | 1988-08-31 | 1988-08-31 | Double-cyclone combustion system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2036575U (en) |
-
1988
- 1988-08-31 CN CN 88213575 patent/CN2036575U/en not_active Withdrawn
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| 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 |